Guirguis, Kristen; Gershunov, Alexander; Hatchett, Benjamin; Shulgina, Tamara; DeFlorio, Michael J.; Subramanian, Aneesh C.; Guzman-Morales, Janin; Aguilera, Rosana; Clemesha, Rachel; Corringham, Thomas W.; Delle Monache, Luca; Reynolds, David; Tardy, Alex; Small, Ivory; Ralph, F. Martin (2022). Historical Catalog of Winter Weather Regimes Impacting California, 1949-2017. UC San Diego Library Digital Collections. https://doi.org/10.6075/J089161B

This collection contains a historical catalog of daily atmospheric weather patterns observed over the North Pacific Ocean and western North America spanning 1949-2017 as described in the manuscript “Winter wet–dry weather patterns driving atmospheric rivers and Santa Ana winds provide evidence for increasing wildfire hazard in California” (Guirguis et al. 2022). The catalog classifies observed 500 mb geopotential height anomaly patterns according to sixteen recurring winter weather regimes that have been linked to atmospheric river landfalls, extreme precipitation, Santa Ana winds, floods, and wildfires in California. The source data are from NCEP/NCAR global Reanalysis (Kalnay et al. 1996). The weather regimes are defined based on daily positive/negative phase interactions between four key atmospheric teleconnection patterns over the North Pacific (“North Pacific Modes” or “NP4 modes”, Guirguis et al. 2020a and Guirguis et al. 2020b).

• November-February 1949 to 2017

• 2022

• Guirguis, Kristen

• Ralph, F. Martin

• Gershunov, Alexander

• Aguilera, Rosana
• Clemesha, Rachel
• Corringham, Thomas W.
• DeFlorio, Michael J.
• Delle Monache, Luca
• Guzman-Morales, Janin
• Hatchett, Benjamin
• Reynolds, David
• Shulgina, Tamara
• Small, Ivory
• Subramanian, Aneesh C.
• Tardy, Alex

US Department of Reclamation: USBR-R15AC00003; California Department of Water Resources: 4600010378 UCOP2-11; California-Nevada Climate Applications Program: A17OAR4310284; National Oceanic and Atmospheric Administration: A18OAR431034; Southwest Climate Adaptation Science Center: NA11OAR43101

• California
• North Pacific Ocean
• Pacific Coast (North America)
• Southern California

• Atmospheric rivers
• California precipitation
• California wildfires
• Climate changes
• Climate variability
• Extreme weather
• Hydrologic extremes
• Santa Ana winds
• Water resources

Polygon: 80,120 80,250 -20,250 -20,120 80,120

• data
• image
• text

• English

Alex Tardy: https://orcid.org/0000-0001-7343-4334

Alexander Gershunov: https://orcid.org/0000-0002-6598-6638

Aneesh C. Subramanian: https://orcid.org/0000-0001-7805-0102

Benjamin Hatchett: https://orcid.org/0000-0003-1066-3601

David Reynolds: https://orcid.org/0000-0001-5159-1443

F. Martin Ralph: https://orcid.org/0000-0002-0870-6396

Janin Guzman-Morales: https://orcid.org/0000-0001-6040-454X

Kristen Guirguis: https://orcid.org/0000-0002-5274-0225

Luca Delle Monache: https://orcid.org/0000-0003-4953-0881

Michael J. DeFlorio: https://orcid.org/0000-0002-3375-4146

Rachel Clemesha: https://orcid.org/0000-0002-3881-2384

Rosana Aguilera: https://orcid.org/0000-0001-7993-8154

Tamara Shulgina: https://orcid.org/0000-0002-7381-3331

Thomas W. Corringham: https://orcid.org/0000-0003-1460-5927

Primary associated publication

• Guirguis, K., A. Gershunov, B. Hatchett, T. Shulgina, M.J. DeFlorio, A.C. Subramanian, J. Guzman-Morales, R. Aguilera, R. Clemesha, T.W. Corringham, L. Delle Monache, D. Reynolds, A.Tardy, I. Small, and F.M. Ralph. (2022). Winter wet–dry weather patterns driving atmospheric rivers and Santa Ana winds provide evidence for increasing wildfire hazard in California. Climate Dynamics. https://doi.org/10.1007/s00382-022-06361-7

Reference

• Guirguis, K., A. Gershunov, R.E.S. Clemesha, T. Shulgina, A. C. Subramanian, and F.M. Ralph, 2018: Circulation Drivers of Atmospheric Rivers at the North American West Coast. Geophys. Res. Lett. https://doi.org/10.1029/2018GL079249
• Guirguis, K., Gershunov, A., DeFlorio, M. J., Shulgina, T., Delle Monache, L., Subramanian, A. C., Corringham, T. W.; Ralph, F. M. (2020a). Four atmospheric circulation regimes over the North Pacific and their relationship to California precipitation on daily to seasonal timescales. Geophys. Res. Lett. https://doi.org/10.1029/2020GL087609
• Guirguis, K., Gershunov, A., DeFlorio, M. J., Shulgina, T., Delle Monache, L., Subramanian, A. C., Corringham, T. W.; Ralph, F. M. (2020b). Data from: Four atmospheric circulation regimes over the North Pacific and their relationship to California precipitation on daily to seasonal timescales. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0154FJJ
• Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C., Wang, J., Leetmaa, A., Reynolds, R., Jenne, R., & Joseph, D., 1996: The NCEP/NCAR 40-Year Reanalysis Project, Bulletin of the American Meteorological Society, 77(3), 437-472. https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2

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2022-07-19