Submitted Publications

  1. (Under Review) Chen, H., P.A. Ullrich, J. Panetta, D. Marsico, M. Hanke, R. Jain, C. Zhang and R.L. Jacob (2026) "Accurate and robust geometric algorithms for regridding on the sphere" Submitted to Geosci. Model. Dev.
  2. (Under Review) Han, Y. and P.A. Ullrich (2026) "The evolution of tropical cyclone intensity and size in observations and HighResMIP models" Submitted to J. Geophys. Res. Atm.
  3. (Under Review) Quagraine, K.T., T.A. O'Brien, W. Boos, D. Neelin, W.-M. Tsai, L.R. Leung, F. Ahmed and P.A. Ullrich (2026) "Compound mesoscale convective systems and low-pressure systems in tropical monsoon regions: Meteorological setup and its effect on precipitation" Submitted to J. Geophys. Res. Atm.
  4. (Under Review) Baek, S.H., C.M. Zarzycki, P.A. Ullrich, C. Randall, A. Srivastava, W.-Y. Wu, R. McCrary and A.M. Rhoades (2026) "Weather sensitivity to sea surface temperatures over the contiguous United States in a medium ensemble of high-resolution regionally refined simulations using E3SM" Submitted to J. Adv. Model. Earth Sys.
  5. (Under Review) Gettelman, A., P.L. Vidale, B. Stevens, F. Ziemen, Z. Feng, H. Konow, T. Kolling, L. Kluft, W. Jones, S. Pasqualetto, Y. Wu, S. Brose, J. Clyne, L. Fita, S. Green, L. Harris, M.A. Hart, J. Kukulies, B. Medeiros, T.M. Merlis, M. Muetzelfeldt, R. Pincus, R.P. da Rocha, M. Satoh, H. Su, D. Takasuka, C. Terai, P.A. Ullrich and T. Zhou (2026) "Hacking km-scale models: A participative model for climate information" Submitted to Bull. Amer. Meteor. Soc.
  6. (Under Review) Srivastava, A., P.A. Ullrich and M. Risser (2026) "Natural variability primarily responsible for 2025 Los Angeles fire weather" Submitted to Nature Climate Change
  7. (Under Review) Choi, J., P.A. Ullrich, J. Lee, P.J. Gleckler, S. Goodnight and S.-W. Son (2026) "Uncertainty in California winter precipitation linked to future projections of North Pacific large-scale atmospheric circulation" Submitted to J. Geophys. Res. Atm.
  8. (Under Review) Hoffman, F.M., B. Hassler, R. Swaminathan, J. Lewis, B. Andela, N. Collier, D. Hegedűs, J. Lee, C. Pascoe, M. Pflüger, M. Stockhause, P.A. Ullrich, M. Xu, L. Bock, F. Chun, B.K. Gier, D.I. Kelley, A. Lauer, J. Lenhardt, M. Schlund, M.G. Sreeush, K. Weigel, E. Blockley, R. Beadling, R. Beucher, D.D. Dugassa, V. Lembo, J. Lu, S. Brands, J. Tjiputra, E. Malinina, B. Mederios, E. Scoccimarro, J. Walton, P. Kershaw, A.L. Marquez, M.J. Roberts, E. O’Rourke, E. Dingley, B. Turner, H. Hewitt and J.P. Dunne (2026) "Rapid Evaluation Framework for the CMIP7 Assessment Fast Track" Submitted to Geosci. Model Dev.
  9. (Under Review) Zhang, J., P.M. Caldwell, P. Bogenschutz, P.A. Ullrich, D.C. Bader, S. Duan and H. Beydoun (2026) "Through the lens of a kilometer-scale climate model: what will happen if 2023 Jing-Jin-Ji flood occurs in 2050?" Submitted to J. Geophys. Res. Atm.
  10. (Under Review) Li, J., Y. Qian, L. R. Leung, W. Liu, K. Zhang, P.A. Ullrich, L. Li, Y. Liu, H. Huang and Z. Xue (2026) "Potential distinct impacts of global warming on mesoscale convective systems and isolated deep convection in the central-eastern United States" Submitted to J. Geophys. Res. Atm.

Publications

2026

  1. (In Press) Zhang, J., J.-C. Golaz, M.V. Signorotti, H.H. Lee, P. Bogenschutz, M. Monteagudo, P.A. Ullrich, R.S. Arthur, S. Po-Chedley, P. Cameron-Smith and J.P. Watson (2026) "Simulation of wind and solar energy generation over California with E3SM SCREAM regionally refined models at 3.25 km and 800 m resolutions" Geosci. Model. Dev.
  2. (In Press) Bass, B., L. Su, D.P. Lettenmaier, D. Pierce, S. Rahimi, A. Hall, D. Cayan, W. Krantz, J. Kalansky, A. Rhoades and P.A. Ullrich (2026) "Unprecedented shifts in hydrology are emerging across California's critical basins: An evaluation from 0.5 to 3.5C" Water Resour. Res.
  3. (In Press) Ullrich, P.A., D.R. Feldman, J. Alder, J. Bewley, M. Bukovsky, K. Dixon, E. Gutmann, K. Jagannathan, A. Jones, R. Kotamarthi, H. Lee, F. Lipschultz, J. Littell, E. Massoud, R. McCrary, R. Moss, S. Rahimi-Esfarjani, A. Schwarz, T.L. Spero, S. Steinschneider, L. Sun and A.M. Wootten (2026) "Advancing a coordinated strategy for decision-relevant climate data products for the United States" Bull. Amer. Meteor. Soc., doi: 10.1175/BAMS-D-24-0303.1.
  4. (DOI) Yatunin, D., S. Byrne, C. Kawczynski, S. Kandala, G. Bozzola, A. Sridhar, Z. Shen, A. Jaruga, J. Sloan, J. He, D.Z. Huang, V. Barra, O. Knoth, P.A. Ullrich and T. Schneider (2026) "The Climate Modeling Alliance atmosphere dynamical core: Concepts, numerics, and scaling" J. Adv. Model. Earth Sys. 18 (3), e2025MS005014, doi: 10.1029/2025MS005014.
  5. (DOI | arXiv) Chen, H., P.A. Ullrich, and J. Panetta (2026) "Fast and accurate intersections on a sphere" SIAM J. Sci. Comp. 48 (2), 10.1137/25M1737614.
  6. (DOI) Chen, X., L.R. Leung and P.A. Ullrich (2026) "Object-based evaluation of dynamical and statistical downscaled precipitation products over CONUS" Bull. Amer. Meteor. Soc. 107 (3), E528-E545, doi: 10.1175/BAMS-D-24-0325.1.
  7. (DOI) Balaguru, K., C. Chang, L.R. Leung, P.A. Ullrich, Y. Han, J.R. Rice, S. Hagos, D. Chavas, S. Taraphdar, B. Harrop., N. Sun and D. R. Judi (2026) "Recent tropical cyclone outer size increases in the western North Atlantic" Earth's Future 14 (2), e2025EF007162, doi: 10.1029/2025EF007162.
  8. (DOI) Siler, N., M. Koszuta, S. Rahimi, J. Norris, A. Hall and P.A. Ullrich (2026) "Examining the robustness of weakened orographic influence on precipitation in downscaled climate projections over the western US" Geophys. Res. Lett. 53 (1), e2025GL119251, doi: 10.1029/2025GL119251.

2025

  1. (DOI) Massoud, E.C., S.K. Ames, N. Collier, P.J. Durack, D. Feldman, P.J. Gleckler, F.M. Hoffman, J. Kumar, F. Lipschultz, K.E. Taylor and P.A. Ullrich (2025) "Hosting downscaled decision-relevant community data products in ESGF2-US" Env. Res. Climate. 5 (1), 011002, doi: 10.1088/2752-5295/ae27ea.
  2. (DOI) Xue, Z., L.-Y. Leung and P.A. Ullrich (2025) "A greening future elevates flash drought risk in northern mid-to-high latitudes" Earth's Future 13 (12), e2025EF006883, doi: 10.1029/2025EF006883.
  3. (DOI) Huang, M., P.-L. Ma, A.C. Varble, J.D. Fast, T. Hassan, J. Li, Y. Qin, S. Tang, P.A. Ullrich and Y. Yao (2025) "Evaluation of E3SM simulated aerosols and aerosol-cloud interactions across GCM and convection-permitting scales" J. Adv. Model. Earth Sys. 17, e2025MS005288, doi: 10.1029/2025MS005288.
  4. (DOI) Terai, C.R., N.D. Keen, P.M. Caldwell, H. Beydoun, P.A. Bogenshutz, L.-W. Chao, B.R. Hillman, H.-Y. Ma, M.D. Zelinka, L. Bertagna, A.M. Bradley, T.C. Clevenger, A.S. Donahue, J. Foucar, J.-C. Golaz, O. Guba, W. Hannah, J. Lee, W. Lin, N. Mahfouz, J. Mulmenstadt, A. Salinger, B. Singh, S. Sreepathi, Y. Qin, M.A. Taylor, P.A. Ullrich, W.-Y. Wu, X. Yuan, C. Zender and Y. Zhang (2025) "Radiative, hydrologic, and circulation response to warming in Cess-Potter simulations using the global 3-km SCREAM" J. Adv. Model. Earth Sys. 17 (10), e2024MS004930, doi: 10.1029/2024MS004930.
  5. (DOI) Landy, J., K.A. Reed, A.M. Rhoades and P.A. Ullrich (2025) "A climatology and life-cycle characteristics of atmospheric fronts and their associated precipitation" Geophys. Res. Lett. 130 (16), e2024JD041609, doi: 10.1029/2024JD041609.
  6. (DOI) Baek, S.H., E. McClenny, P.A. Ullrich, K.T. Quagraine and W.D. Collins (2025) "Response of atmospheric river width and intensity to sea-surface temperatures in an aquaplanet model" J. Geophys. Res. Atm. 130 (13), e2025JD043367, doi: 10.1029/2025JD043367.
  7. (DOI) Sawadekar, K., Y. Song, M. Pan, H. Beck, R. McCrary, P.A. Ullrich, K. Lawson and C. Shen (2025) "Improving differentiable hydrologic modeling with interpretable forcing fusion" J. Hydrol. 659, 133320, doi: 10.1016/j.jhydrol.2025.133320.
  8. (DOI) Rush, W.D., J.M. Lora, C.B. Skinner, S.A. Menemenlis, C.A. Shields, P.A. Ullrich, T. O'Brien, S. Brands, B. Guan, K.S. Mattingly, E. McClenny, B. Mundhenk, A.B. Nellikkattil, A.M. Ramos, K.J. Reid, E. Shearer, J. Wille, L.R. Leung, F.M. Ralph, J.J. Rutz and M. Wehner (2025) "Atmospheric river detection under changing seasonality and mean-state climate: ARTMIP Tier 2 paleoclimate experiments" J. Geophys. Res. Atm. 130 (1), e2024JD042222, doi: 10.1029/2024JD042222.
  9. (DOI) Ullrich, P.A., E.A. Barnes, W.D. Collins, K. Dagon, S. Duan, J. Elms, J. Lee, L.R. Leung, D. Lu, M.J. Molina and T.A. O'Brien (2025) "Recommendations for comprehensive and independent evaluation of machine learning-based Earth system models" J. Geophys. Res: Mach. Learn. Comp. 2 (1), e2024JH000496, doi: 10.1029/2024JH000496.
  10. (DOI) Tsai, W.-M., S. Duan, T.A. O'Brien, J.L. Catto, P.A. Ullrich, Y. Zhou, L.R. Leung, Z. Feng, W.R. Boos, D.L. Suhas, F. Ahmed and J.D. Neelin (2025) "Co-occurring atmospheric features and their contributions to precipitation extremes" J. Geophys. Res. Atm. 130 (5), e2024JD041687, doi: 10.1029/2024JD041687.
  11. (DOI) Roberts, M.J., K.A. Reed, Q. Bao, S.J. Camargo, P. Chang, C.-T. Chen, H.M. Christensen, G. Danabasoglu, I. Frenger, N.S. Fučkar, H.T. Hewitt, H. Huang, D. Kim, C. Kodama, M. Lai, R. Mizuta, P. Nobre, P. Ortega, D. Paquin, C.D. Roberts, E. Scoccimarro, J. Seddon, A.M. Treguier, C.-Y. Tu, P.A. Ullrich, P.L. Vidale, M.F. Wehner, C.M. Zarzycki, B. Zhang, W. Zhang and M. Zhao (2025) "High Resolution Model Intercomparison Project phase 2 (HighResMIP2) towards CMIP7" Geosci. Model. Dev. 18 (4), 1307-1332, doi: 10.5194/gmd-18-1307-2025.
  12. (DOI) Srivastava, A.K., R. Grotjahn, A.M. Rhoades and P.A. Ullrich (2025) "Large-scale Statistically Meaningful Patterns (LSMPs) associated with precipitation extremes over Northern California" J. Geophys. Res. Atm. 130 (5), e2024JD041307, doi: 10.1029/2024JD041307.
  13. (DOI) Dong, B., P.A. Ullrich, J. Lee, P. Gleckler, K. Chang and T.A. O'Brien (2025) "Evaluation of atmospheric rivers in reanalyses and climate models in a new metrics framework" Geosci. Model. Dev. 18 (4), 961–976, doi: 10.5194/gmd-2024-142.
  14. (DOI | EoS Highlight) Han, Y. and P.A. Ullrich (2025) "The System for Classification of Low-Pressure Systems (SyCLoPS): An all-in-one objective framework for large-scale datasets" J. Geophys. Res. Atm. 130 (1), e2024JD041287, doi: 10.1029/2024JD041287.

2024

  1. (DOI) Suhas, D.L., S. Vishnu, S. Goyal, S. Sarkar, P. Mukhopadhyay, P.A. Ullrich and W.R. Boos (2024) "Automated operational forecasting of monsoon low pressure systems" Bull. Amer. Meteor. Soc. 105 (12), doi: 10.1175/BAMS-D-23-0067.1.
  2. (DOI) Hall, A., S. Rahimi, J. Norris, N. Ban, N. Siler, L.R. Leung, P.A. Ullrich, K.A. Reed and A.F. Prein (2024) "An evaluation of dynamical downscaling methods used to project regional climate change" J. Geophys. Res. Atm. 129, e2023JD040591.
  3. (DOI) Baek, S.H., P.A. Ullrich, B. Dong and J. Lee (2024) "Evaluating downscaled products with expected hydroclimatic co-variances" Geosci. Model. Dev. 17, 8665–8681, doi: 10.5194/egusphere-2024-1456.
  4. (DOI) Negron-Juarez, R., M. Wehner, M. Assunção F. Silva Dias, P.A. Ullrich, J.Q. Chambers and W.J. Riley (2024) "CMIP6 HighResMIP bias in extreme rainfall drives underestimation of Amazonian precipitation" Env. Res. Commun. 6 091001, doi: 10.1088/2515-7620/ad6ff9.
  5. (DOI) Swenson, L. and P.A. Ullrich (2024) "Clusters of regional precipitation seasonality change in the Community Earth System Model version 2" J. Climate 37 (21), doi: 10.1175/JCLI-D-24-0133.1.
  6. (DOI) Zarzycki, C.M., T. Zhang, A.D. Jones, D. Rastogi, P. Vahmani and P.A. Ullrich (2024) "Changes in four decades of near-CONUS tropical cyclones in an ensemble of 12km thermodynamic global warming simulations" Geophys. Res. Lett. 51 (18), e2024GL110535, doi: 10.1029/2024GL110535.
  7. (DOI) Srivastava, A.K., M. Wehner, C. Bonfils, P.A. Ullrich and M.A. Risser (2024) "Local hydroclimate drives differential warming rates between regular summer days and extreme hot days in the Northern Hemisphere" Weather Clim. Extrem. 45, 100709, doi: 10.1016/j.wace.2024.100709.
  8. (DOI) Rhoades, A.M., C.M. Zarzycki, B.J. Hatchett, H. Inda-Diaz, W. Rudisill, B. Bass, E. Dennis, A. Heggli, R. McCrary, S. McGinnis, M. Ombadi, S. Rahimi-Esfarjani, E. Slinskey, A. Srivastava, J. Szinai, P.A. Ullrich, M. Wehner, D. Yates and A.D. Jones (2024) "Anticipating how rain-on-snow events will change through the 21st Century: Lessons from the 1997 New Year’s flood event" Clim. Dyn., doi: 10.1007/s00382-024-07351-7.
  9. (DOI) Duan, S. and P.A. Ullrich (2024) "Meteorological drivers of North American monsoon extreme precipitation events" J. Geophs. Res. Atm. 129 (13), e2023JD040535, doi: 10.1029/2023JD040535.
  10. (DOI) Donahue, A.S., P.M. Caldwell, L. Bertagna, H. Beydoun, P.A. Bogenschutz, A.M. Bradley, T.C. Clevenger, J. Foucar, C. Golaz, O. Guba, W. Hannah, B.R. Hillman, J.N. Johnson, N. Keen, W. Lin, B. Singh, M.A. Taylor, J. Tian, C.R. Terai, P.A. Ullrich, X. Yuan and Y. Zhang (2024) "To exascale and beyond: The Simple Cloud-Resolving E3SM Atmosphere Model (SCREAM), a performance portable global atmosphere model for cloud-resolving scales" J. Adv. Model. Earth Sys. 16 (7), e2024MS004314, doi: 10.1029/2024MS004314.
  11. (DOI) Ahn, M.S., P.A. Ullrich, J. Lee, P.J. Gleckler, H.-Y. Ma, C.R. Terai, P.A. Bogenschutz and A.C. Ordonez (2024) "Bimodality in simulated precipitation frequency distributions and its relationship with convective parameterizations" npj Clim. Atm. Sci. 7, 132, doi: 10.1038/s41612-024-00685-3.
  12. (DOI) Lee, J., P. Gleckler, M.-S. Ahn, A. Ordonez, P.A. Ullrich, K.R. Sperber, K.E. Taylor, Y.Y. Planton, E. Guilyardi, P. Durack, C. Bonfils, M.D. Zelinka, L.-W. Chao, B. Dong, C. Doutriaux, C. Zhang, T. Vo, J. Boutte, M.F. Wehner, A.G. Pendergrass, D. Kim, Z. Xue, A.T. Wittenberg and J. Krasting (2024) "Objective evaluation of Earth system models: PCMDI Metrics Package (PMP) version 3" Geosci. Model. Dev. 17 (9), 3919-3948, doi: 10.5194/egusphere-2023-2720.
  13. (DOI) Wu, W.-Y., H.-Y. Ma, D.C. Lafferty, Z. Feng, P.A. Ullrich, Q. Tang, J.-C. Golaz, D. Galea and H.-H. Lee (2024) "Assessment of storm-associated precipitation and its extremes using observations and climate model short-range hindcasts" J. Geophys. Res. Atm. 129 (9), e2023JD039697, doi: 10.1029/2023JD039697.
  14. (DOI) Pokharel, B., K. Jagannathan, S.Y.S. Wang, A.D. Jones, P.A. Ullrich, L.Y.R. Leung, M. LaPlante, S. Buddhavarapu, K. Borhara, J. Eklund, C. Hasenyager, J, Serago, J.R. Prairie, L. Kaatz, T. Winchell and F. Kugel (2024) "Can we rely on drought-ending "miracles" in the Colorado River Basin?" J. Amer. Water Res. Assoc. 60 (3), 813-824, doi: 10.1111/1752-1688.13204.
  15. (DOI) Willson, J.L., K.A. Reed, C. Jablonowski, J. Kent, P.H. Lauritzen, R. Nair, M.A. Taylor, P.A. Ullrich, C.M. Zarzycki, D.M. Hall, D. Dazlich, R. Heikes, C. Konor, D. Randall, T. Dubos, Y. Meurdesoif, X. Chen, L. Harris, C. Kuhnlein, V. Lee, A. Qaddouri, C. Girard, M. Giorgetta, D. Reinert, H. Miura, T. Ohno and R. Yoshida (2024) "DCMIP2016: The tropical cyclone test case" Geosci. Model Dev. 17 (7), 2493–2507, doi: 10.5194/gmd-17-2493-2024.
  16. (DOI) Duan, S., P.A. Ullrich, M. Risser and A.M. Rhoades (2024) "Using temporal deep learning models to estimate historical and end-century daily snow water equivalent over the Rocky Mountains" Water Resour. Res. 60 (4), e2023WR035009, doi: 10.1029/2023WR035009.
  17. (DOI) Fasullo, J.T., J.M. Caron, A. Phillips, H. Li, J.H. Richter, R.B. Neale, N. Rosenbloom, G. Strand, S. Glanville, Y. Li, J. Arblaster, F. Lehner, G. Meehl, J.-C. Golaz, P.A. Ullrich and J. Lee (2024) "Modes of variability in E3SM and CESM Large Ensembles" J. Climate 37 (8), 2629-2653, doi: 10.1175/JCLI-D-23-0454.1.
  18. (DOI) Risser, M.D., W.D. Collins, M.F. Wehner, T.A. O'Brien, H. Huang and P.A. Ullrich (2024) "Anthropogenic aerosols mask increases in US rainfall by greenhouse gases" Nature Communications 15, 1318, doi: 10.1038/s41467-024-45504-8.
  19. (DOI) Shu, L., P.A. Ullrich, X. Meng, C. Duffy, H. Chen and Z. Li (2024) "rSHUD v2.0: Advancing SHUD and unstructured hydrological modeling in the R environment" Geophys. Model Dev. 17 (2), 497-527, doi: 10.5194/gmd-17-497-2024.

2023

  1. (DOI) Harrop, B.E., K. Balaguru, J.-C. Golaz, L.R. Leung, S. Mahajan, A.M. Rhoades, P.A. Ullrich, C. Zhang, X. Zheng, T. Zhou, P.M. Caldwell, N.D. Keen and A. Mametjanov (2023) "Evaluating the water cycle over CONUS using multiple metrics for the Energy Exascale Earth System Model version 1 (E3SMv1) across resolutions" J. Adv. Model. Earth Sys. 15 (11), e2022MS003490, doi: 10.1029/2022MS003156.
  2. (DOI) Sukhdeo, R., R. Grotjahn and P.A. Ullrich (2023) "Two large-scale meteorological patterns are associated with short-duration dry spells in the Northeastern United States" Mon. Weather Rev. 151 (11), 2993-3011, doi: 10.1175/MWR-D-23-0141.1.
  3. (DOI) Rhoades, A.M., C.M. Zarzycki, H.A. Inda-Diaz, M. Ombadi, U. Pasquier, A. Srivastava, B.J. Hatchett, E. Dennis, A. Heggli, R. McCrary, S. McGinnis, S. Rahimi-Esfarjani, E. Slinskey, P.A. Ullrich, M. Wehner and A.D. Jones (2023) "Recreating the California New Year’s flood event of 1997 in a regionally refined Earth system model" J. Adv. Model. Earth Sys. 15 (10), e2023MS003793, doi: 10.1029/2023MS003793.
  4. (DOI) Jones, A.D., D. Rastogi, P. Vahmani, A.M. Stansfield, K.A. Reed, T. Thurber, P.A. Ullrich and J. Rice (2023) "Continental United States climate projections based on thermodynamic modification of historical weather" Sci. Data 10 (664), doi: 10.1038/s41597-023-02485-5.
  5. (DOI) Ahn, M.-S., P.A. Ullrich, P.J. Gleckler, J. Lee, A.C. Ordonez and A.G. Pendergrass (2023) "Evaluating precipitation distributions at regional scales: A benchmarking framework and application to CMIP5 and CMIP6" Geosci. Model Dev. 16 (13), 3927-3951, doi: 10.5194/gmd-16-3927-2023.
  6. (DOI) Vishnu, S., M.D. Risser, T.A. O'Brien, P.A. Ullrich and W.R. Boos (2023) "Observed increase in the peak rain rates of monsoon depressions" npj Clim. Atm. Sci. 6 (111), doi: 10.1038/s41612-023-00436-w.
  7. (DOI) Jagannathan, K., S. Buddhavarapu, P.A. Ullrich, A.D. Jones and the HyperFACETS Team (2023) "Typologies of actionable climate information and its use" Global Env. Change 82, 102732, doi: 10.1016/j.gloenvcha.2023.102732.
  8. (DOI) Srivastava, A.K., P.A. Ullrich, D. Rastogi, P. Vahmani, A. Jones and R. Grotjahn (2023) "Assessment of WRF (v4.2.1) dynamically downscaled precipitation on subdaily and daily timescales over CONUS" Geosci. Model Dev. 16 (13), 3699-3722, doi: 10.5194/gmd-16-3699-2023.
  9. (DOI) Goldenson, N., L.R. Leung, L. Mearns, D. Pierce, K. Reed, P.A. Ullrich, D. Cayan, A. Hall, A. Jones, W. Krantz, S. Rahimi and I. Simpson (2023) "Use-inspired, process-oriented GCM selection: Prioritizing models for regional dynamical downscaling" Bull. Amer. Meteor. Soc. 104 (9), E1619-E1629, doi: 10.1175/BAMS-D-23-0100.1.
  10. (DOI) Molina, M.J., T.A. O'Brien, G. Anderson, M. Ashfaq, K. Bennett, W.D. Collins, K. Dagon, J.M. Restrepo and P.A. Ullrich (2023) "A review of recent and emerging machine learning applications for climate variability and weather phenomena" Art. Intel. for the Earth Syst. 2 (4), doi: 10.1175/AIES-D-22-0086.1.
  11. (DOI) Tang, Q., J.-C. Golaz, L.P. Van Roekel, M.A. Taylor, W. Lin, B.R. Hillman, P.A. Ullrich, A.M. Bradley, O. Guba, J.D. Wolfe, T. Zhou, K. Zhang, X. Zheng, Y. Zhang, M. Zhang, M. Wu, H. Wang, C. Tao, B. Singh, A. Rhoades, Y. Qin, H.-Y. Li, Y. Feng, Y. Zhang, C. Zhang, C.S. Zender, S. Xie, E.L. Roesler, A.F. Roberts, A. Mametjanov, M.E. Maltrud, N.D. Keen, R.L. Jacob, C. Jablonowski, O. Hughes, R.M. Forsyth, P.M. Caldwell, G. Bisht, R.B. McCoy, L.R. Leung and D.C. Bader (2023) "The fully coupled regionally refined model of E3SM version 2: Overview of the atmosphere, land, and river results" Geosci. Model. Dev. 16 (13), 3953-3995, doi: 10.5194/gmd-2022-262.
  12. (DOI) Neelin, J.D., J.P. Krasting, A. Radhakrishnan, J. Liptak, T. Jackson, Y. Ming, W. Dong, A. Gettelman, D.R. Coleman, E.D. Maloney, A.A. Wing, Y. Kuo, F. Ahmed, P.A. Ullrich, C.M. Bitz, R.B. Neale, A. Ordonez and E.A. Maroon (2023) "Process-oriented diagnostics: Principles, practice, community development and common standards" Bull. Amer. Meteor. Soc. 104 (8), E1452-E1468, doi: 10.1175/BAMS-D-21-0268.1.
  13. (DOI) Huang, H., W. Collins, C. Patricola, Y. Ruprich-Robert and P.A. Ullrich (2023) "Contrasting responses of Atlantic and Pacific tropical cyclone activity to Atlantic Multidecadal Variability" Geophys. Res. Lett. 50 (10), e2023GL102959, doi: 10.1029/2023GL102959.
  14. (DOI) Xue, Z. and P.A. Ullrich (2023) "Sensitivity of the pseudo-global warming method under flood conditions: A case study from the Northeastern U.S." Hydro. Earth Syst. Sci. 27 (9), 1909-1927, doi: 10.5194/hess-27-1909-2023.
  15. (DOI) Marsico, D. and P.A. Ullrich (2023) "Strategies for conservative and non-conservative monotone remapping on the sphere" Geosci. Model Dev. 16 (5), 1537–1551, doi: 10.5194/gmd-16-1537-2023.
  16. (DOI) Frame, J., F. Kratzert, H. Gupta, P.A. Ullrich and G. Nearing (2023) "On strictly enforced mass conservation constraints for modeling the rainfall-runoff process" Hydrol. Proc. 37 (3), e14847, doi: 10.1002/hyp.14847.
  17. (DOI) Liu, W., P.A. Ullrich, J. Li, C. Zarzycki, P.M. Caldwell, L.R. Leung and Y. Qian (2023) "The June 2012 North American Derecho: A testbed for evaluating regional and global climate modeling systems at cloud-resolving scales" J. Adv. Model. Earth Sys. 15 (4), e2022MS003358, doi: 10.1029/2022MS003358.
  18. (DOI) Shields, C.A., A.E. Payne, E.J. Shearer, M.F. Wehner, T.A. O'Brien, J.J. Rutz, L.R. Leung, F.M. Ralph, A.B. Marquardt Collow, P.A. Ullrich, Q. Dong, A. Gershunov, H. Griffith, B. Guan, J.M. Lora, M. Lu, E.E. McClenny, K.M. Nardi, M. Pan, Y. Qian, A.M. Ramos, T. Shulgina, M. Viale, C. Sarangi, R. Tomé and C.M. Zarzykci (2023) "Future atmospheric rivers and impacts on precipitation: Overview of the ARTMIP Tier2 high-resolution global warming experiment" Geophs. Res. Lett. 50 (6), e2022GL102091, doi: 10.1029/2022GL102091.
  19. (DOI) Jiang, X., H. Su, S.S. Chen and P.A. Ullrich (2023) "Simulation of African easterly waves in a global climate model" J. Climate 36 (5), doi: 10.1175/JCLI-D-22-0090.1.

2022

  1. (DOI) Zhang, C., J.-C. Golaz, R. Forsyth, T. Vo, S. Xie, Z. Shaheen, G.L. Potter, X.S. Asay-Davis, C.S. Zender, W. Lin, C.-C. Chen, C.R. Terai, S. Mahajan, T. Zhou, K. Balaguru, Q. Tang, C. Tao, Y. Zhang, T. Emmenegger and P.A. Ullrich (2022) "The E3SM Diagnostics Package (E3SM Diags v2.6): A python-based diagnostics package for Earth system models evaluation" Geosci. Model. Dev. 15, 9031–9056, doi: 10.5194/gmd-2022-38.
  2. (DOI) Rhoades, A.M., B.J. Hatchett, M.D. Risser, W.D. Collins, N.E. Bambach, L.S. Huning, R. McCrary, E.R. Siirila-Woodburn, P.A. Ullrich, M.F. Wehner, C.M. Zarzycki and A.D. Jones (2022) "Asymmetric emergence of low-to-no snow in the American Cordillera" Nature Climate Change 12, 1151-1159, doi: 10.1038/s41558-022-01518-y.
  3. (DOI) Mahadevan, V.S., J.E. Guerra, X. Jiao, P. Kuberry, Y. Li, P.A. Ullrich, D. Marsico, R. Jacob, P. Bochev and P. Jones (2022) "Metrics for Intercomparison of Remapping Algorithms (MIRA) applied to Earth System Models" Geosci. Model. Dev. 15, 6601–6635, doi: 10.5194/gmd-15-6601-2022.
  4. (DOI) Bower, E., K.A. Reed, P.A. Ullrich, C.M. Zarzycki and A.G. Pendergrass (2022) "Quantifying heavy precipitation throughout the entire tropical cyclone life cycle" J. Hydrometeor. 23 (10), doi: 10.1175/JHM-D-21-0153.1.
  5. (DOI) Reed, K.A., N. Goldenson, R. Grotjahn, W.J. Gutowski, K. Jagannathan, A.D. Jones, L.R. Leung, S.A. McGinnis, S.C. Pryor, A.K. Srivastava, P.A. Ullrich and C.M. Zarzycki (2022) "Metrics as tools for bridging climate science and applications" WIREs Climate Change 13 (6), doi: 10.1002/wcc.799.
  6. (DOI) Xue, Z. and P.A. Ullrich (2022) "Changing trends in drought patterns over the Northeastern U.S. using multiple large ensemble datasets" J. Climate 35 (22), doi: 10.1175/JCLI-D-21-0810.1.
  7. (DOI) Risser, M., W.D. Collins, M.F. Wehner, T.A. O'Brien, C. Paciorek, J.P. O'Brien, C. Patricola, H. Huang, P.A. Ullrich and B. Loring (2022) "A method for detection and attribution of regional precipitation change using Granger causality: Application to the United States historical record" Climate Dyn., doi: 10.1007/s00382-022-06321-1.
  8. (DOI) Collow, A. B. Marquardt, C. A. Shields, B. Guan, S. Kim, J. M. Lora, E. E. McClenny, K. Nardi, A. Payne, K. Reid, E. J. Shearer, R. Tomé, J. D. Wille, A. M. Ramos, I. V. Gorodetskaya, L. R. Leung, T. A. O'Brien, F. M. Ralph, J. Rutz, P. A. Ullrich and M. Wehner (2022) "An overview of ARTMIP's tier 2 reanalysis intercomparison: Uncertainty in the detection of atmospheric rivers and their associated precipitation" J. Geophys. Res. Atm. 127 (8), e2021JD036155, doi: 10.1029/2021JD036155.
  9. (DOI) Sukhdeo, R., P.A. Ullrich and R. Grotjahn (2022) "Assessing the large-scale drivers of precipitation in the Northeastern United States via Linear Orthogonal Decomposition" Climate Dyn., doi: 10.1007/s00382-022-06289-y.
  10. (DOI) Liu, W., P.A. Ullrich, O. Guba, P.M. Caldwell and N.D. Keen (2022) "An assessment of nonhydrostatic and hydrostatic dynamical cores at seasonal time scales in the Energy Exascale Earth System Model (E3SM)" J. Adv. Model. Earth Sys. 14 (2), e2021MS002805, doi: 10.1029/2021MS002805.
  11. (DOI) O'Brien, T.A., M.F. Wehner, A.E. Payne, C.A. Shields, J.J. Rutz, L.-R. Leung, F.M. Ralph, A. Collow, B. Guan, J. Lora, B. McClenny, K. M. Nardi, A. Ramos, C. Sarangi, E. Shearer, P.A. Ullrich, C. Zarzycki and B. Loring (2022) "Increases in future AR count and size: Overview of the ARTMIP Tier 2 CMIP5/6 experiment" J. Geophys. Res., e2021JD036013, doi: 10.1029/2021JD036013.

2021

  1. (DOI) Bambach, N.E., A.M. Rhoades, B.J. Hatchett, A.D. Jones, P.A. Ullrich and C.M. Zarzycki (2021) "Projecting climate change in the Chilean Andes using variable-resolution CESM" Int. J. Climatology 42 (4), 2514-2542, doi: 10.1002/joc.7379.
  2. (DOI) Caldwell, P.M., C. R. Terai, B. Hillman, N. D. Keen, P. Bogenschutz, W. Lin, H. Beydoun, M. Taylor, L. Bertagna, A. Bradley, T. C. Clevenger, A. S. Donahue, C. Eldred, J. Foucar, C. Golaz, O. Guba, R. Jacob, J. Johnson, J. Krishna, W. Liu, K. Pressel, A. G. Salinger, B. Singh, A. Steyer, P.A. Ullrich, D. Wu, X. Yuan, J. Shpund, H.-Y. Ma and C.S. Zender (2021) "Convection-permitting simulations with the E3SM global atmosphere model" J. Adv. Earth Sys. Model. 13 (11), e2021MS002544, doi: 10.1029/2021MS002544.
  3. (DOI) Srivastava, A., R. Grotjahn, P.A. Ullrich and C. Zarzycki (2021) "Evaluation of precipitation indices in suites of dynamically and statistically downscaled regional climate models over Florida" Climate Dyn., doi: 10.1007/s00382-021-05980-w.
  4. (DOI) Igel, M., P.A. Ullrich and W. Boos (2021) "Upper-tropospheric troughs and North American monsoon rainfall in a long-term track dataset" J. Geophys. Res. Atm. 126 (20), e2021JD034541, doi: 10.1029/2021JD034541.
  5. (DOI) Xue, Z. and P.A. Ullrich (2021) "A comprehensive intermediate-term drought evaluation system and evaluation of climate data products over the Conterminous United States" J. Hydrometeor. 22(9), 2311-2337, doi: 10.1175/JHM-D-20-0314.1.
  6. (DOI) Xue, Z. and P.A. Ullrich (2021) "A retrospective and prospective examination of the 1960s U.S. Northeast Drought" Earth's Future 9 (7), e2020EF001930, doi: 10.1029/2020EF001930.
  7. (DOI) Ullrich, P.A., C.M. Zarzycki, E.E. McClenny, M.C. Pinheiro, A.M. Stansfield and K.A. Reed (2021) "TempestExtremes v2.1: A community framework for feature detection, tracking and analysis in large datasets" Geophys. Model Dev. 14, 5023-5048, doi: 10.5194/gmd-2020-303.
  8. (DOI) Zhou, Y., T.A. O'Brien, P.A. Ullrich, W.D. Collins, C.M. Patricola and A.M. Rhoades (2021) "Uncertainties in atmospheric river life cycles by detection algorithms: Climatology and variability" J. Geophys. Res. Atm. 126 (8), e2020JD033711, doi: 10.1029/2020JD033711.
  9. (DOI) Guerra, J. and P.A. Ullrich (2021) "Spectral steady-state solutions to the 2-D compressible Euler equations for cross mountain flows" Comm. Appl. Math Comp. Sci. 16 (1), 99-117, doi: 10.2140/camcos.2021.16.99.
  10. (DOI) Zarzycki, C.M., P.A. Ullrich and K.A. Reed (2021) "Metrics for evaluating tropical cyclones in climate data" J. Appl. Meteor. Clim. 60 (5), 643-660, doi: 10.1175/JAMC-D-20-0149.1.
  11. (DOI) Wehner, M., J. Lee, M. Risser, P.A. Ullrich, P. Gleckler and W. Collins (2021) "Evaluation of extreme subdaily precipitation in high-resolution global climate model simulations" Phil. Trans. Royal Soc. A 379 (2195), p. 20190545, doi: 10.1098/rsta.2019.0545.
  12. (DOI) Srivastava, A., R. Grotjahn and P.A. Ullrich (2021) "Pooling data improves multimodel IDF estimates over median-based IDF estimates: Analysis over Susquehanna and Florida" J. Hydrometeor. 22 (4), 971-995, doi: 10.1175/JHM-D-20-0180.1.

2020

  1. (DOI) Rhoades, A.M., A.D. Jones, A. Srivastava, H. Huang, T.A. O'Brien, C.M. Patricola, P.A. Ullrich, M. Wehner and Y. Zhou (2020) "The shifting scales of Western US landfalling atmospheric rivers under climate change" Geophys. Res. Lett., 2020GL089096, doi: 10.1029/2020GL089096.
  2. (DOI) McClenny, E., P.A. Ullrich and R. Grotjahn (2020) "Sensitivity of atmospheric river vapor transport and precipitation to uniform sea-surface temperature increases" J. Geophys. Res. Atm. 125 (21), e2020JD033421, doi: 10.1029/2020JD033421.
  3. (DOI) Duan, S., Ullrich, P.A. and Shu, L. (2020) "Using convolutional neural networks for streamflow projection in California" Frontiers in Water, doi: 10.3389/frwa.2020.00028.
  4. (DOI) Balaguru, K., L.-Y. R. Leung, L. van Roekel, J.-C. Golaz, P.A. Ullrich, P. Caldwell, S. Hagos, B. Harrop and A. Mametjanov (2020) "Characterizing tropical cyclones in the Energy Exascale Earth System Model version 1" J. Adv. Model. Earth Sys. 12 (8), e2019MS002024, doi: 10.1029/2019MS002024.
  5. (DOI) Srivastava, A., R. Grotjahn and P.A. Ullrich (2020) "Evaluation of historical CMIP6 model simulations of extreme precipitation over contiguous US regions" Weather Clim. Extr. 29, 100268, doi: 10.1016/j.wace.2020.100268.
  6. (DOI) Nair, V., W. Boos, P.A. Ullrich and T.A. O'Brien (2020) "Assessing historical variability of South Asian monsoon lows and depressions with an optimized tracking algorithm" J. Geophys. Res. Atm. 125 (15), e2020JD032977, doi: 10.1029/2020JD032977.
  7. (DOI) Roberts, M., J. Camp, J. Seddon, P.L. Vidale, K. Hodges, B. Vanniere, J. Mecking, R. Haarsma, A. Bellucci, E. Scoccimarro, L.-P. Caron, F. Chauvin, L. Terray, S. Valcke, M.-P. Moine, D. Putrasahan, C. Roberts, R. Senan, C. Zarzycki, P.A. Ullrich, Y. Yamada, R. Mizuta, C. Kodama, D. Fu, Q. Zhang, G. Danabasoglu, N. Rosenbloom, H. Wang and L. Wu (2020) "Projected Future Changes in Tropical Cyclones using the CMIP6 HighResMIP Multi-model Ensemble" Geophys. Res. Lett. 47 (14), e2020GL088662, doi: 10.1029/2020GL088662.
  8. (DOI) Shu, L., P.A. Ullrich and C.J. Duffy (2020) "Solver for Hydrologic Unstructured Domain (SHUD): Numerical modeling of watershed hydrology with the finite volume method" Geosci. Model. Dev. 13, pp. 2743-2762, doi: 10.5194/gmd-13-2743-2020.
  9. (DOI) Rhoades, A.M., A.D. Jones, T.A. O'Brien, J.P. O'Brien, P.A. Ullrich and C.M. Zarzycki (2020) "Influences of North Pacific Ocean domain extent on the western US winter hydroclimatology in variable-resolution CESM" J. Geophys. Res. Atm. 125 (14), e2019JD031977, doi: 10.1029/2019JD031977.
  10. (DOI) Stansfield, A., K.A. Reed, C.M. Zarzycki, P.A. Ullrich and D.R. Chevas (2020) "Assessing tropical cyclones' contribution to precipitation over the Eastern United States and sensitivity to the variable-resolution domain extent" J. Hydrometeor. 21(7), pp. 1425-1445, doi: 10.1175/JHM-D-19-0240.1.
  11. (DOI) Gutowski, W.J., P.A. Ullrich, A. Hall, L.R. Leung, T.A. O'Brien, C.M. Patricola, R.W. Arritt, M.S. Bukovsky, K.V. Calvin, Z. Feng, A.D. Jones, G.J. Kooperman, E. Monier, M.S. Pritchard, S.C. Pryor, Y. Qian, A.M. Rhoades, A.F. Roberts, K. Sakaguchi, N. Urban and C. Zarzycki (2020) "The ongoing need for high-resolution regional climate models: Process understanding and stakeholder information" Bull. Amer. Meteor. Soc. 101 (5): E664–E683, doi: 10.1175/BAMS-D-19-0113.1.
  12. (DOI) Roberts, M., J. Camp, J. Seddon, P.L. Vidale, K. Hodges, B. Vanniere, J. Mecking, R. Haarsma, A. Bellucci, E. Scoccimarro, L.-P. Caron, F. Chauvin, L. Terray, S. Valcke, M.-P. Moine, D. Putrasahan, C. Roberts, R. Senan, C. Zarzycki, P.A. Ullrich, Y. Yamada, R. Mizuta, C. Kodama, D. Fu, Q. Zhang, G. Danabasoglu, N. Rosenbloom, H. Wang and L. Wu (2020) "Impact of model resolution on tropical cyclone simulation using the HighResMIP-PRIMAVERA multi-model ensemble" J. Clim. 33 (7), pp. 2557–2583, doi: 10.1175/JCLI-D-19-0639.1.
  13. (DOI) Patricola, C.M., J.P. O'Brien, M.D. Risser, A.M. Rhoades, T.A. O'Brien, P.A. Ullrich, D.A. Stone and W.D. Collins (2020) "Maximizing ENSO as a Source of Western US Hydroclimate Predictability" Clim. Dyn. 54, pp. 351–372, doi: 10.1007/s00382-019-05004-8.
  14. (DOI) Wang, M., P.A. Ullrich and D. Millstein (2020) "Future projections of wind patterns in California with the Variable-Resolution CESM: A clustering analysis approach" Clim. Dyn. 54, pp. 2511-2531, doi: 10.1007/s00382-020-05125-5.

2019

  1. (DOI) Caldwell, P.M., A. Mametjanov, Q. Tang, L.P. Van Roekel, J.‐C. Golaz, W. Lin, D.C. Bader, N.D. Keen, Y. Feng, R. Jacob, M.E. Maltrud, A.F. Roberts, M.A. Taylor, M. Veneziani, H. Wang, J.D. Wolfe, K. Balaguru, P. Cameron-Smith, L. Dong, S.A. Klein, L.R. Leung, H.-Y. Li, Q. Li, X. Liu, R.B. Neale, M. Pinheiro, Y. Qian, P.A. Ullrich, S. Xie, Y. Yang, K. Zhang, Y. Zhang and T. Zhou (2019) "The DOE E3SM coupled model version 1: Description and results at high resolution" J. Adv. Model. Earth Sys. 11 (12), pp. 4095-4146, doi: 10.1029/2019MS001870.
  2. (DOI | arXiv) Taylor, M.A., O. Guba, A. Steyer, P.A. Ullrich, D.M. Hall and C. Eldred (2019) "An energy consistent discretization of the nonhydrostatic equations in primitive variables" J. Adv. Model. Earth Sys. 12 (1), e2019MS001783, doi: 10.1029/2019MS001783.
  3. (DOI) Rutz, J., C. Shields, J. Lora, A. Payne, B. Guan, P.A. Ullrich, T. O'Brien, R. Leung, F. Ralph, M. Wehner, S. Brands, A. Collow, A. Gershunov, N. Goldenson, I. Gorodetskaya, H. Griffith, S. Hagos, K. Kashinath, B. Kawzenuk, H. Krishnan, D. Lavers, G. Magnusdottir, P. Nguyen, Prabhat, A. Ramos, S. Sellars, R. Tomé, D. Walister, D. Walton, G. Wick, A. Wilson and M. Viale (2019) "The Atmospheric River Tracking Method Intercomparison Project (ARTMIP): Quantifying Uncertainties in Atmospheric River Climatology" J. Geophys. Res. Atm., 124 (24), pp. 13,777-13,802, doi: 10.1029/2019JD030936.
  4. (DOI | arXiv) Vogl, C.J., A. Steyer, D.R. Reynolds, P.A. Ullrich and C.S. Woodward (2019) "Evaluation of implicit-explicit additive Runge-Kutta integrators for the HOMME-NH dynamical core" J. Adv. Model. Earth Sys. 11 (12), pp. 4228-4244, doi: 10.1029/2019MS001700.
  5. (DOI) Srivastava, A., R. Grotjahn, P.A. Ullrich and M. Risser (2019) "Regional frequency analysis of precipitation over watersheds in Florida and California" Journal of Hydrology 578, 124095, doi: 10.1016/j.jhydrol.2019.124095.
  6. (DOI) Steppeler, J., J. Li, F. Fang, J. Zhu and P. A. Ullrich (2019) "o3o3, a Variant of Spectral Elements with a Regular Collocation Grid" Mon. Weather Rev., 147, pp. 2067–2082, doi: 10.1175/MWR-D-18-0288.1.
  7. (DOI) Zarzycki, C.M., C. Jablonowski, J. Kent, P.H. Lauritzen, R. Nair, K.A. Reed, P.A. Ullrich, D.M. Hall, D. Dazlich, R. Heikes, C. Konor, D. Randall, X. Chen, L. Harris, M. Giorgetta, D. Reinert, C. Kuehnlein, R. Walko, V. Lee, A. Qaddouri, M. Tanguay, H. Miura, T. Ohno, R. Yoshida, J. Klemp, S.-H. Park, W. Skamarock (2019) "DCMIP2016: The splitting supercell test case" Geosci. Model. Dev., 12, pp. 879-892, doi: 10.5194/gmd-12-879-2019.
  8. (DOI) Pinheiro, M.C., P.A. Ullrich and R. Grotjahn (2019) "Atmospheric blocking and intercomparison of objective detection methods: Flow field characteristics" Clim. Dyn., doi: 10.1007/s00382-019-04782-5.
  9. (DOI) Millstein, D., J. Solomon-Culp, M. Wang, P.A. Ullrich and C. Collier (2019) "Wind energy variability and links to regional and synoptic scale weather" Clim. Dyn., 52 (7-8), pp. 4891-4906, doi: 10.1007/s00382-018-4421-y.

2018

  1. (DOI) Rhoades, A.M., A.D. Jones and P.A. Ullrich (2018) "The changing character of mountains as natural reservoirs" Geophys. Res. Lett., 45 (23), pp. 13,008-13,019, doi: 10.1029/2018GL080308.
  2. (DOI) Ullrich, P.A., Z. Xu, A.M Rhoades, M.D. Dettinger, J.F. Mount, A.D. Jones and P. Vahmani (2018) "California's drought of the future: A midcentury recreation of the exceptional conditions of 2012‐2017" Earth's Future, 6 (11), pp. 1568-1587, doi: 10.1029/2018EF001007.
  3. (DOI) Herrington, A.R., P.H. Lauritzen, M.A. Taylor, S. Goldhaber, B.E. Eaton, K.A. Reed and P.A. Ullrich (2018) "Physics-dynamics coupling with element-based high-order Galerkin methods: Quasi equal-area physics grid" Mon. Weather Rev., 147 (1), pp. 69-84, doi: 10.1175/MWR-D-18-0136.1.
  4. (DOI) Ullrich, P.A., D.R. Reynolds, J.E. Guerra and M.A. Taylor (2018) "Impacts and importance of diffusion on the spectral element method: A linear analysis" J. Comput. Phys., 375, pp. 427-446, doi: 10.1016/j.jcp.2018.06.035.
  5. (DOI) Lauritzen, P.H., R.D. Nair, A.R. Herrington, P. Callaghan, S. Goldhaber, J.M. Dennis, J.T. Bacmeister, B.E. Eaton, C.M. Zarzycki, Mark A. Taylor, P.A. Ullrich, T. Dubos, A. Gettelman, R.B. Neale, B. Dobbins, K.A. Reed, C. Hannay, B. Medeiros, J.J. Benedict and J.J. Tribbia (2018) "NCAR CESM2.0 release of CAM-SE: A reformulation of the spectral-element dynamical core in dry-mass vertical coordinates with comprehensive treatment of condensates and energy" J. Adv. Model. Earth Sys., 10 (7), pp. 1537-1570, doi: 10.1029/2017MS001257.
  6. (DOI) Rhoades, A.M., A.D. Jones and P.A. Ullrich (2018) "Assessing mountains as natural reservoirs with a multi-metric framework" Earth's Future, 6 (9), pp. 1221-1241, doi: 10.1002/2017EF000789.
  7. (DOI) Shields, C., J. Rutz, R. Leung, M. Ralph, M. Wehner, B. Kawzenuk, J. Lora, E. McClenny, T. Osborne, A. Payne, P.A. Ullrich, A. Gershunov, N. Goldenson, B. Guan, Y. Qian, A. Ramos, C. Sarangi, S. Sellars, I. Gorodetskaya, K. Kashinath, V. Kurliin, K. Mahoney, G. Muszynski, R. Pierce, A. Sabramanian, R. Tome, D. Waliser, D. Walton, G. Wick, A. Wilson, D. Lavers, Prabhat, A. Collow, H. Krishnan, G. Magnusdottir and P. Nguyen (2018) "Atmospheric River Tracking Method Intercomparison Project (ARTMIP): Project goals and experimental design" Geosci. Model Dev., Volume 11, pp. 2455-2474, doi: 10.5194/gmd-11-2455-2018.
  8. (DOI) Gardner, D.J., J.E. Guerra, F.P. Hamon, D.R. Reynolds, P.A. Ullrich and C.S. Woodward (2018) "Implicit-Explicit (IMEX) Runge-Kutta Methods for non-hydrostatic atmospheric models" Geosci. Model Dev., 11, pp. 1497-1515, doi: 10.5194/gmd-2017-285.
  9. (DOI) Wang, M., P.A. Ullrich, D. Millstein (2018) "The future of wind energy in California: Future projections with the Variable-Resolution CESM" Renewable Energy, 127, pp. 242-257, doi: 10.1016/j.renene.2018.04.031.
  10. (DOI) Xu, Z., A.M. Rhoades, H. Johansen, P.A. Ullrich and W. Collins (2018) "An intercomparison of GCM and RCM dynamical downscaling for characterizing the hydroclimatology of California and Nevada" J. Hydrometeor., 19 (9), pp. 1485-1506, doi: 10.1175/JHM-D-17-0181.1.
  11. (DOI) Ullrich, P.A., C. Jablonowski, J. Kent, P.H. Lauritzen, R. Nair, K.A. Reed, C.M. Zarzycki, D.M. Hall, D. Dazlich, R. Heikes, C. Konor, D. Randall, T. Dubos, Y. Meurdesoif, X. Chen, L. Harris, C. Kuehnlein, V. Lee, A. Qaddouri, C. Girard, M. Giorgetta, D. Reinert, J. Klemp, S.-H. Park, W. Skamarock, H. Miura, T. Ohno, R. Yoshida, R. Walko, A. Reinecke and K. Viner (2017) "DCMIP2016: A Review of Non-hydrostatic dynamical core design and intercomparison of participating models" Geosci. Model. Dev., 10, pp. 4477-4509, doi: 10.5194/gmd-10-4477-2017. [EGU Highlight Paper]
  12. (DOI) Wu, C., X. Liu, Z. Lin, A.M. Rhoades, P.A. Ullrich, C.M. Zarzycki, Z. Lu and S.R. Rahimi-Esfarjani (2017) "Exploring a variable‐resolution approach for simulating regional climate in the Rocky Mountain Region using the VR‐CESM" J. Geophys. Res. Atmospheres, 122 (20), pp. 10,939-10,965, doi: 10.1002/2017JD027008.
  13. (DOI) Wang, M. and P.A. Ullrich (2018) "Marine air penetration in California's Central Valley: Meteorological drivers and the impact of climate change" J. Appl. Meteor. Clim., 57, pp. 137-154, doi: 10.1175/JAMC-D-17-0089.1.

2017

  1. (DOI) Rhoades, A.M., P.A. Ullrich, C.M. Zarzycki, H.Johansen, S.A. Margulis, H. Morrison, Z. Xu and W. Collins (2017) "Sensitivity of mountain hydroclimate simulations in variable-resolution CESM to microphysics and horizontal resolution" J. Adv. Model Earth Sys., 10 (6), pp. 1357-1380, doi: 10.1029/2018MS001326.
  2. (DOI) Zarzycki, C.M. and P.A. Ullrich (2017) "Assessing sensitivities in algorithmic detection of tropical cyclones in climate data" Geophys. Res. Lett., 44 (2), pp. 1141-1149, doi: 10.1002/2016GL071606.
  3. (DOI) Huang, X. and P.A. Ullrich (2017) "The changing character of twenty-first century precipitation over the western United States in the variable-resolution CESM" J. Clim., 30 (18), pp. 7555–7575, doi: 10.1175/JCLI-D-16-0673.1.
  4. (DOI) Rhoades, A.M., P.A. Ullrich and C.M. Zarzycki (2017) "Projecting 21st century snowpack trends in western USA mountains using variable-resolution CESM" Clim. Dyn., 50 (1-2), pp. 261–288, doi: 10.1007/s00382-017-3606-0.
  5. (DOI) Ullrich, P.A. and C.M. Zarzycki (2017) "TempestExtremes v1.0: A framework for scale-insensitive pointwise feature tracking on unstructured grids" Geosci. Model. Dev., 10, pp. 1069-1090, doi: 10.5194/gmd-10-1069-2017.
  6. (DOI) Lauritzen, P.H., M.A. Taylor, J. Overfelt, P.A. Ullrich, R.D. Nair, S. Goldhaber and R. Kelly (2017) "CAM-SE-CSLAM: Consistent coupling of a conservative semi-Lagrangian finite-volume method with spectral-element dynamics" Mon. Weather Rev., 145 (3), pp. 833-855, doi: 10.1175/MWR-D-16-0258.1.

2016

  1. (DOI) Ferguson, J., C. Jablonowski, H. Johansen, P. McCorquodale, P.A. Ullrich and P. Colella (2016) "Analyzing the Adaptive Mesh Refinement (AMR) characteristics of a high-order cubed-sphere shallow water model" Mon. Weather Rev., 144 (12), pp. 4641-4666, doi: 10.1175/MWR-D-16-0197.1.
  2. (DOI) O'Brien, T.A., K. Kashinath, W. Collins, O. Rübel, S. Byna, J. Gu , H. Krishnan, P.A. Ullrich (2016) "Resolution dependence of precipitation statistical fidelity in hindcast simulations" J. Adv. Earth System Model., 8 (2), pp. 976-990, doi: 10.1002/2016MS000671.
  3. (DOI) Huang, X. and P.A. Ullrich (2016) "Irrigation impacts on California's climate with the variable-resolution CESM" J. Adv. Earth System Model., 8 (3), pp. 1151-1163, doi: 10.1002/2016MS000656.
  4. (DOI) Hotta, D., K. Eugenia and P.A. Ullrich (2016) "A semi-implicit modification to Lorenz N-cycle scheme and its application for integration of meteorological equations" Mon. Weather Rev., 144 (6), pp. 2215-2233, doi: 10.1175/MWR-D-15-0330.1.
  5. (DOI) Guerra, J.E. and P.A. Ullrich (2016) "A high-order staggered finite-element vertical discretization for non-hydrostatic atmospheric models" Geosci. Model. Dev., 9, pp. 2007-2029, doi:10.5194/gmd-9-2007-2016.
  6. (DOI) Huang, X., A.M. Rhoades, P.A. Ullrich and C.M. Zarzycki (2016) "An evaluation of the variable resolution-CESM for modeling California’s climate" J. Adv. Earth System Model., 8 (1), pp. 345-369, doi: 10.1002/2015MS000559.
  7. (DOI) Ullrich, P.A., D. Devendran and H. Johansen (2016) "Arbitrary-order conservative and consistent remapping and a theory of linear maps, Part 2" Mon. Weather Rev., 144 (4), pp. 1529-1549, doi: 10.1175/MWR-D-15-0301.1.
  8. (DOI) Rhoades, A.M., X. Huang, P.A. Ullrich and C.M. Zarzycki (2016) "Characterizing Sierra Nevada snowpack using variable-resolution CESM" J. Appl. Meteor. Clim., 55 (1), pp. 173-196, doi: 10.1175/JAMC-D-15-0156.1.
  9. (DOI) Hall, D.M., P.A. Ullrich, K.A. Reed, C. Jablonowski, R.D. Nair and H.M. Tufo (2016) "Dynamical Core Model Intercomparison Project (DCMIP) tracer transport test results for CAM‐SE" Quart. J. Royal Meteor. Soc., 142 (697), pp. 1672–1684, doi: 10.1002/qj.2761.

2015

  1. (DOI) McCorquodale, P., P.A. Ullrich, H. Johansen and P. Colella. (2015) "An adaptive multiblock high-order finite-volume method for solving the shallow-water equations on the sphere" Comm. Appl. Math. Comp. Sci. 10-2, pp. 121-162, doi: 10.2140/camcos.2015.10.121.
  2. (DOI) Ullrich, P.A., K.A. Reed and C. Jablonowski (2015) "Analytical initial conditions and an analysis of baroclinic instability waves in f- and beta-plane 3D channel models." Quart. J. Roy. Meteor. Soc., 141 (693), pp. 2972–2988, doi: 10.1002/qj.2583.
  3. (DOI) Ullrich, P.A. and M.A. Taylor (2015) "Arbitrary-order conservative and consistent remapping and a theory of linear maps, part 1" Mon. Weather Rev., 143, pp. 2419–2440, doi: 10.1175/MWR-D-14-00343.1.
  4. (DOI) Ullrich, P.A. and J.E. Guerra (2015) "Exploring the effects of a high-order vertical coordinate in a non-hydrostatic global model." Procedia Comput. Sci., 51, pp. 2076-2085, doi: 10.1016/j.procs.2015.05.475.

2014

  1. (DOI) Ullrich, P.A. (2014) "A global finite-element shallow-water model supporting continuous and discontinuous elements" Geosci. Model Dev., 7, pp. 5141-5182, doi: 10.5194/gmd-7-3017-2014.
  2. (DOI) Guba, O., M.A. Taylor, P.A. Ullrich, J.R. Overfelt and M.N. Levy (2014) "The spectral element method on variable resolution grids: Evaluating grid sensitivity and resolution-aware numerical viscosity" Geosci. Model Dev., 7, pp. 2803-2816, doi: 10.5194/gmd-7-2803-2014.
  3. (DOI) Zarzycki, C.M., M. Levy, C. Jablonowski, J.R. Overfelt, M.A. Taylor and P.A. Ullrich (2014) "Aquaplanet experiments using CAM's variable resolution dynamical core" J. Climate, 27, pp. 5481-5503, doi:10.1175/JCLI-D-14-00004.1.
  4. (DOI) Ullrich, P.A., P.H. Lauritzen and C. Jablonowski (2014) "A high-order fully explicit flux-form semi-Lagrangian shallow-water model." Int. J. Numer. Meth. Fluids., 75 (2), pp. 103-133, DOI: 10.1002/fld.3887.
  5. (DOI) Lauritzen, P. H., P.A. Ullrich, C. Jablonowski, P.A. Bosler, D. Calhoun, A.J. Conley, T. Enomoto, L. Dong, S. Dubey, O. Guba, A.B. Hansen, E. Kaas, J. Kent, J.-F. Lamarque, M.J. Prather, D. Reinert, V.V. Shashkin, W.C. Skamarock, B. Sørensen, M.A. Taylor and M.A. Tolstykh (2014): "A standard test case suite for two-dimensional linear transport on the sphere: results from a collection of state-of-the-art schemes." Geosci. Model Dev., 7, pp. 105-145, doi:10.5194/gmd-7-105-2014.
  6. (DOI) Ullrich, P.A., T. Melvin, C. Jablonowski and A. Staniforth (2014) "A proposed baroclinic wave test case for deep- and shallow-atmosphere dynamical cores." Quart. J. Royal Meteor. Soc., 140 (682), pp. 1590-1602, doi: 10.1002/qj.2241.
  7. (DOI) Kent, J., P.A. Ullrich and C. Jablonowski (2014) "Dynamical Core Model Intercomparison Project: Tracer transport test cases" Quart. J. Roy. Meteor. Soc., 140 (681), pp. 1279–1293, doi: 10.1002/qj.2208.
  8. (DOI) Ullrich, P.A. (2014) "Understanding the treatment of waves in atmospheric models, Part I: The shortest resolved waves of the 1D linearized shallow water equations" Quart. J. Roy. Meteor. Soc., 140 (682), pp. 1426–1440, doi: 10.1002/qj.2226.
  9. (DOI) Ullrich, P.A. and M.R. Norman (2014) "The Flux-Form Semi-Lagrangian Spectral Element (FF-SLSE) method for tracer transport" Quart. J. Roy. Meteor. Soc., 140 (680), pp. 1069-1085, doi:10.1002/qj.2184.

2013

  1. (DOI) Ullrich, P.A., P.H. Lauritzen and C. Jablonowski (2013) "Some considerations for high-order `incremental remap'-based transport schemes: edges, reconstructions and area integration." Int. J. Num. Methods Fluids, 71 (9), pp. 1131–1151, doi:10.1002/fld.3703.

2012

  1. (DOI) Ullrich, P.A. and C. Jablonowski (2012) "MCore: A nonhydrostatic atmospheric dynamical core utilizing high-order finite-volume methods." J. Comp. Phys., 231 (15), pp. 5078–5108, doi: 10.1016/j.jcp.2012.04.024.

2011

  1. (DOI) Ullrich, P.A. and C. Jablonowski (2011) "Operator-split Runge-Kutta-Rosenbrock methods for nonhydrostatic atmospheric models", Mon. Wea. Rev., 140 (4), pp. 1257-1284, doi: 10.1175/MWR-D-10-05073.1.
  2. (DOI) Ullrich, P.A. and C. Jablonowski (2011) "An analysis of 1D finite-volume methods for geophysical problems on refined grids", J. Comp. Phys., 230 (3), pp. 706-725, doi: 10.1016/j.jcp.2010.10.014.

2010

  1. (DOI) Ullrich, P.A., C. Jablonowski and B. van Leer (2010) "High-order finite-volume models for the shallow-water equations on the sphere", J. Comp. Phys., 229 (17), pp. 6104-6134, doi: 10.1016/j.jcp.2010.04.044.
  2. (DOI) Lauritzen, P.H., R.D. Nair and P.A. Ullrich (2010) "A conservative semi-Lagrangian multi-tracer transport scheme (CSLAM) on the cubed-sphere grid", J. Comp. Phys., 229 (5), pp. 1401--1424, doi: 10.1016/j.jcp.2009.10.036.

2009

  1. (DOI) Ullrich, P.A., P.H. Lauritzen and C. Jablonowski (2009) "Geometrically Exact Conservative Remapping (GECoRe): Regular latitude-longitude and cubed-sphere grids", Mon. Wea. Rev., 137 (6), pp. 1721--1741.

Published Abstracts

  1. (Link) Ullrich, P.A., G. Jost, B.A. Lelbach and H. Johansen (2016) "Exascale-ready programming models for climate" Paper for Advancing X-cutting Ideas for Computational Climate Science.
  2. (Link) Ullrich, P.A. (2015) "Recent advances in the development of next-generation global modeling systems" Extended abstract for Comparative Climates of Terrestrial Planets II, NASA Ames, Moffett Field, California.
  3. (Link) Ullrich, P.A. and J.E. Guerra (2015) "Exploring the effects of a high-order vertical coordinate in a non-hydrostatic global model." Conference paper presented at the International Conference on Computational Science: Numerical and Computational Developments to Advance Multiscale Earth System Models (MSESM), Reykjavik, Iceland, June 1-3, 2015.

Conference Papers

  1. (Link) Yan, L., P.A. Ullrich, L.P. Van Roekel, B. Wang and H. Guo (2023) "Multilevel robustness for 2D vector field feature tracking, selection, and comparison" EuroVis 2022, 42 (6), e14799, doi: 10.1111/cgf.14799.

Book Chapters

  1. (Link) Lauritzen, P.H., P.A. Ullrich and R.D. Nair (2011) "Atmospheric transport schemes: Desirable properties and a semi-Lagrangian view on finite-volume discretizations." Chapter in the Springer book 'Numerical Techniques for Global Atmospheric Models.'

Limited Distribution

  1. (Link) Ullrich, P.A., D. Feldman, S. Abdelrahim, D. Barrie, S. Basile, K. Dixon, R. Joseph, D. Herring, J.K. Hiers, H. Lee, F. Lipshultz and T. Spero (2024) "Understanding Decision-Relevant Regional Climate Data Products" DOE/SC-2021, Department of Energy's Biological and Environmental Research Program, U.S. Department of Energy, Office of Science. https://doi.org/10.2172/2474992
  2. (Link) Ullrich, P.A. (2023) "Validation of LOCA2 and STAR-ESDM Statistically Downscaled Products" Tech. Rep.
  3. (Link) O'Brien, T.A., A. Payne, C.A. Shields, J. Rutz, S. Brands, C. Castellano, J. Chen, W. Cleveland, M.J. DeFlorio, N. Goldenson, I. Gorodetskaya, H.I. Díaz, K. Kashinath, B. Kawzenuk, S. Kim, M. Krinitskiy, J.M. Lora, E. McClenny, A. Michaelis, J.P. O’Brien, C.M. Patricola, A.M. Ramos, E.J. Shearer, W.-W. Tung, P.A. Ullrich, M.F. Wehner, K. Yang, R. Zhang, Z. Zhang and Y. Zhou (2020) "Detection Uncertainty Matters for Understanding Atmospheric Rivers" Bulletin of the American Meteorological Society 101 (6): E790–E796, doi: 10.1175/BAMS-D-19-0348.1.
  4. (Link) Houlton, B.Z., J. Lund, S. Greco, J. London, H. Margolis, D. Niemeier, J. Ogden, S. Ostoja, P.A. Ullrich, S. Wheeler (2018) "Sacramento Summary Report. California’s Fourth Climate Change Assessment" Publication number: SUM-CCCA4-2018-002.
  5. (Link) Mount, J., E. Hanak, K. Baerenklau, V. Butsic, C. Chappelle, A. Escriva-Bou, G. Fogg, G. Gartrell, Td. Grantham, B. Gray, S. Green, T. Harter, D. Jassby, J. Jezdimirovic, Y. Jin, J. Lund, H. McCann, J. Medellin-Azuara, D. Mitchell, P. Moyle, A. Rhoades, K. Schwabe, N. Seavy, S. Stephens, D. Swain, L. Szeptycki, B. Thompson, P.A. Ullrich, J. Viers, Z. Xu (2018) "Managing Drought in a Changing Climate: Four Essential Reforms" Published by the Public Policy Institute of California, San Francisco, California.
  6. (Link) Ng, E.G., K. Evans, P. Caldwell, F.M. Hoffman, C. Jackson, K. Kleese Van Dam, R. Leung, D. Martin, G. Ostrouchov, R. Tuminaro, P.A. Ullrich, S.M. Wild and S. Williams (2017) "Advancing Cross-Cutting Ideas for Computational Climate Science: Workshop Report" Eds. E.G. Ng and K. Evans.
  7. (Link) Hanak, E., J. Mount, J. Lund, et al. (2016) "Climate Change and Water" In: California's Water, published by the Public Policy Institute of California Water Policy Center.
  8. (Link) Ullrich, P.A. and C.M. Zarzycki (2016) "Variable and adaptive resolution climate modeling with applications in subseasonal to seasonal extreme weather prediction" In: S2S Predictability of Extreme Weather, US CLIVAR Variations Newsletter Vol. 14, No. 4, Fall 2016, Eds. K. Pegion and S. Wang.

Theses

  1. (Link) Sukhdeo, R. (2024) Precipitation Variability over the Northeastern United States: Large-Scale Drivers and Large-Scale Meteorological Patterns, (PhD Thesis) University of California, Davis.
  2. (Link) Xue, Z. (2022) A framework for investigating the impacts of climate change on droughts over Northeastern US, (PhD Thesis) University of California, Davis.
  3. (Link) Duan, S. (2022) Machine Learning and Feature Attribution for Hydroclimate Modeling, (PhD Thesis) University of California, Davis.
  4. (Link) McClenny, E. (2021) Utilizing Simpler Models to Understand Atmospheric River Responses to Sea-Surface Temperature Increases, (PhD Thesis) University of California, Davis.
  5. (Link) Pinheiro, M.C. (2020) Detection and Representation of Atmospheric Blocking: An Examination of Block Characteristics, (PhD Thesis) University of California, Davis.
  6. (Link) Guerra, J.E. (2019) A Development Framework for High Fidelity Non-hydrostatic Simulations of Cross Mountain Flow, (PhD Thesis) University of California, Davis.
  7. (Link) Wang, M. (2019) Projecting Climate Change Impact on the Regional Scale: Future Changes of Wind and Wind Energy in California, (PhD Thesis) University of California, Davis.
  8. (Link) Rhoades, A. (2017) Understanding 21st Century Hydroclimatic Trends in Western USA Mountain Ranges using a Variable-Resolution Global Climate Model, (PhD Thesis) University of California, Davis.
  9. (Link) Huang, X. (2016) Studying Regional Climate with Variable-Resolution CESM, (PhD Thesis) University of California, Davis.
  10. (Link) Ullrich, P.A. (2011) Atmospheric Modeling with High-Order Finite-Volume Methods, (PhD Thesis) University of Michigan.
  11. (Link) Ullrich, P.A. (2007) Exact and Perturbed Friedmann-Lemaitre Cosmologies, (Master's Thesis) University of Waterloo.

Media Authored

  1. (Link) Weijer, W., F. Hoffman, P.A. Ullrich, M. Wehner and J. Liu (2019) "The RGMA CMIP6 Hackathon: A Coordinated and Distributed Effort to Collaboratively Analyze Climate Model Data" Eos, 100, doi: 10.1029/2019EO137735. Published on 23 December 2019.