Winter storms are responsible for billion-dollar economic losses in the western United States. Because storm structures are not well resolved by global climate models, it is not well established how single events and their structures change with warming. Here we use regional storm-resolving simulations to investigate climate change impact on western US winter storms. Under a high-emissions scenario, precipitation volume from the top 20% of winter storms is projected to increase by up to 40% across the region by mid-century. The average increase in precipitation volume (31%) is contributed by 22% from increasing area coverage and 19% from increasing storm intensity, while a robust storm sharpening with larger increase in storm centre precipitation compared with increase in storm area reduces precipitation volume by 10%. Ignoring storm sharpening could result in overestimation of the changes in design storms currently used in infrastructure planning in the region.
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The precipitation object dataset is available and deposited at Zenodo (https://doi.org/10.5281/zenodo.6378027)47. The intermediate data necessary to reproduce the results are deposited at Zenodo (https://doi.org/10.5281/zenodo.7392256)48.
The codes used to generate the figures in this study are available at Zenodo (https://doi.org/10.5281/zenodo.7392256)48.
Smith, A. B. U.S. Billion-dollar Weather and Climate Disasters, 1980–present (NCEI, 2021); https://doi.org/10.25921/stkw-7w73
Chen, X., Hossain, F. & Leung, L. R. Probable maximum precipitation in the U.S. Pacific Northwest in a Changing Climate. Water Resour. Res. 53, 9600–9622 (2017).
Manual on Estimation of Probable Maximum Precipitation (PMP) (WMO, 2009); https://library.wmo.int/index.php?lvl=notice_display&id=1302#.Y57lHnbP3IU
Pahl-Wostl, C. et al. Towards a sustainable water future: shaping the next decade of global water research. Curr. Opin. Environ. Sustain. 5, 708–714 (2013).
Westra, S. et al. Future changes to the intensity and frequency of short-duration extreme rainfall. Rev. Geophys. 52, 522–555 (2014).
Prein, A. F. et al. The future intensification of hourly precipitation extremes. Nat. Clim. Change 7, 48–52 (2016).
Trenberth, K. E., Dai, A., Rasmussen, R. M. & Parsons, D. B. The changing character of precipitation. Bull. Am. Meteorol. Soc. 84, 1205–1218 (2003).
Pendergrass, A. G. et al. Nonlinear response of extreme precipitation to warming in CESM1. Geophys. Res. Lett. 46, 10551–10560 (2019).
Berg, N. & Hall, A. Increased interannual precipitation extremes over california under climate change. J. Clim. 28, 6324–6334 (2015).
Swain, D. L., Langenbrunner, B., Neelin, J. D. & Hall, A. Increasing precipitation volatility in twenty-first-century California. Nat. Clim. Change 8, 427–433 (2018).
Lamjiri, M. A., Ralph, F. M. & Dettinger, M. D. Recent changes in United States extreme 3-day precipitation using the R-CAT Scale. J. Hydrometeorol. 21, 1207–1221 (2020).
Wrzesien, M. L. & Pavelsky, T. M. Projected changes to extreme runoff and precipitation events from a downscaled simulation over the Western United States. Front. Earth Sci. 7, 355 (2020).
Huang, X., Swain, D. L. & Hall, A. D. Future precipitation increase from very high resolution ensemble downscaling of extreme atmospheric river storms in California. Sci. Adv. 6, eaba1323 (2020).
Prein, A. F. et al. A review on regional convection-permitting climate modeling: demonstrations, prospects, and challenges. Rev. Geophys. 53, 323–361 (2015).
Pfahl, S., O’Gorman, P. A. & Fischer, E. M. Understanding the regional pattern of projected future changes in extreme precipitation. Nat. Clim. Change 7, 423–427 (2017).
Chen, X. et al. Predictability of extreme precipitation in Western U.S. watersheds based on atmospheric river occurrence, intensity, and duration. Geophys. Res. Lett. 45, 11693–11701 (2018).
Wright, D. B., Smith, J. A. & Baeck, M. L. Critical examination of area reduction factors. J. Hydrol. Eng. 19, 769–776 (2014).
Liu, C. et al. Continental-scale convection-permitting modeling of the current and future climate of North America. Clim. Dyn. 49, 71–95 (2017).
Musselman, K. N. et al. Projected increases and shifts in rain-on-snow flood risk over western North America. Nat. Clim. Change 8, 808–812 (2018).
Musselman, K. N., Clark, M. P., Liu, C., Ikeda, K. & Rasmussen, R. Slower snowmelt in a warmer world. Nat. Clim. Change 7, 214–219 (2017).
Scaff, L. et al. Simulating the convective precipitation diurnal cycle in North America’s current and future climate. Clim. Dyn. 55, 369–382 (2020).
Dettinger, M. D., Ralph, F. M., Das, T., Neiman, P. J. & Cayan, D. R. Atmospheric rivers, floods and the water resources of California. Water 3, 445–478 (2011).
Hughes, M. et al. The landfall and inland penetration of a flood-producing atmospheric river in Arizona. Part II: sensitivity of modeled precipitation to terrain height and atmospheric river orientation. J. Hydrometeorol. 15, 1954–1974 (2014).
Ryoo, J.-M. et al. Terrain trapped airflows and precipitation variability during an atmospheric river event. J. Hydrometeorol. 21, 355–375 (2020).
Ralph, F. M., Neiman, P. J. & Rotunno, R. Dropsonde observations in low-level jets over the northeastern pacific ocean from CALJET-1998 and PACJET-2001: mean vertical-profile and atmospheric-river characteristics. Mon. Weather Rev. 133, 889–910 (2005).
Corringham, T. W., Ralph, F. M., Gershunov, A., Cayan, D. R. & Talbot, C. A. Atmospheric rivers drive flood damages in the western United States. Sci. Adv. 5, eaax4631 (2019).
Leung, L. R. & Qian, Y. Atmospheric rivers induced heavy precipitation and flooding in the western U.S. simulated by the WRF regional climate model. Geophys. Res. Lett. 36, L03820 (2009).
Loriaux, J. M., Lenderink, G. & Siebesma, A. P. Peak precipitation intensity in relation to atmospheric conditions and large-scale forcing at midlatitudes. J. Geophys. Res. Atmos. 121, 5471–5487 (2016).
Kunkel, K. E. et al. Probable maximum precipitation and climate change. Geophys. Res. Lett. 40, 1402–1408 (2013).
Davies, L., Jakob, C., May, P., Kumar, V. V. & Xie, S. Relationships between the large-scale atmosphere and the small-scale convective state for Darwin, Australia. J. Geophys. Res. Atmos. 118, 11,534–11,545 (2013).
Matte, D., Christensen, J. H. & Ozturk, T. Spatial extent of precipitation events: when big is getting bigger. Clim. Dyn. 58, 1861–1875 (2022).
Hansen, E. M., Fenn, D. D., Corrigan, P. & Vogel, J. L. Hydrometerological Report No. 57 (US Department of Army Corps of Engineers, 1994); https://www.weather.gov/media/owp/hdsc_documents/PMP/HMR57.pdf
Corrigan, P., Fenn, D. D., Kluck, D. R. & Vogel, J. L. Hydrometerological Report No. 59 (US Department of Commerce, 1999); https://www.weather.gov/media/owp/hdsc_documents/PMP/HMR59.pdf
Hansen, E. M., Schwarz, F. K. & Riedel, J. T. Hydrometerological Report No. 49 (US Depertment of Commerce, 1984); https://www.weather.gov/media/owp/hdsc_documents/PMP/HMR49.pdf
Kotz, M., Levermann, A. & Wenz, L. The effect of rainfall changes on economic production. Nature 601, 223–227 (2022).
Gao, Y. et al. Dynamical and thermodynamical modulations on future changes of landfalling atmospheric rivers over western North America. Geophys. Res. Lett. 42, 7179–7186 (2015).
Prein, A. F. et al. Increased rainfall volume from future convective storms in the US. Nat. Clim. Change 7, 880–884 (2017).
Wasko, C., Sharma, A. & Westra, S. Reduced spatial extent of extreme storms at higher temperatures. Geophys. Res. Lett. 43, 4026–4032 (2016).
Fletcher, S., Lickley, M. & Strzepek, K. Learning about climate change uncertainty enables flexible water infrastructure planning. Nat. Commun. 10, 1782 (2019).
Lopez-Cantu, T., Prein, A. F. & Samaras, C. Uncertainties in future U.S. extreme precipitation from downscaled climate projections. Geophys. Res. Lett. 47, e2019GL086797 (2020).
Skamarock, W. C. et al. A Description of the Advanced Research WRF Version 3 (NCAR, 2008); https://doi.org/10.5065/D68S4MVH
Gao, Y., Leung, R. L., Zhao, C. & Hagos, S. Sensitivity of U.S. summer precipitation to model resolution and convective parameterizations across gray zone resolutions. J. Geophys. Res. Atmos. 122, 2714–2733 (2017).
Mesinger, F. et al. North American regional reanalysis. Bull. Am. Meteorol. Soc. 87, 343–360 (2006).
Daly, C. et al. Physiographically sensitive mapping of climatological temperature and precipitation across the conterminous United States. Int. J. Climatol. 28, 2031–2064 (2008).
Chen, X., Duan, Z., Leung, L. R. & Wigmosta, M. A framework to delineate precipitation-runoff regimes: precipitation versus snowpack in the Western United States. Geophys. Res. Lett. 46, 13044–13053 (2019).
Rupp, D. E., Abatzoglou, J. T., Hegewisch, K. C. & Mote, P. W. Evaluation of CMIP5 20th century climate simulations for the Pacific Northwest USA. J. Geophys. Res. Atmos. 118, 10,884–10,906 (2013).
Chen, X. et al. Precipitation objects under the current and future climate: WRF 6-km hydroclimate simulation of the western US. Zenodo https://doi.org/10.5281/zenodo.6378027 (2022).
Chen, X., Leung, L. R., Gao, Y., Liu, Y. & Wigmosta, M. S. Sharpening of cold season storms over the western US: companion dataset. Zenodo https://doi.org/10.5281/zenodo.7392256 (2022).
This research is supported by the US Department of Energy Office of Science Biological and Environmental Research as part of the Regional and Global Model Analysis and Multi-Sector Dynamics programme areas. The WRF simulations were supported by the Strategic Environmental Research and Development Program (SERDP) under contract no. RC-2546 and performed using computing resources of the Pacific Northwest National Laboratory Research Computing and the National Energy Research Supercomputing Center (NERSC), which is supported by the DOE Office of Science under contract no. DE-AC02-05CH11231. Pacific Northwest National Laboratory is operated for the Department of Energy by Battelle Memorial Institute under contract no. DE-AC05-76RL01830.
The authors declare no competing interests.
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Chen, X., Leung, L.R., Gao, Y. et al. Sharpening of cold-season storms over the western United States. Nat. Clim. Chang. 13, 167–173 (2023). https://doi.org/10.1038/s41558-022-01578-0