Journal article

Annual Drought in California: Association with Monthly Precipitation and Climate Phases

Shraddhanand Shukla, Anne Steinemann, Sam F Iacobellis, Daniel R Cayan

Journal of Applied Meteorology and Climatology | AMER METEOROLOGICAL SOC | Published : 2015


Annual precipitation in California is more variable than in any other state and is highly influenced by precipitation in winter months. A primary question among stakeholders is whether low precipitation in certain months is a harbinger of annual drought in California. Historical precipitation data from 1895 to 2013 are investigated to identify leading monthly indicators of annual drought in each of the seven climate divisions (CDs) as well as statewide. For this study, drought conditions are defined as monthly/annual (October-September) precipitation below the 20th/30th percentile, and a leading indicator is defined as a monthly drought preceding or during an annual drought that has the stro..

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University of Melbourne Researchers


Awarded by California-Nevada Applications Program

Awarded by National Oceanic and Atmospheric Administration

Funding Acknowledgements

This study received support through the California-Nevada Applications Program (NA11OAR4310150) and other National Oceanic and Atmospheric Administration Grants (NA13OAR4310172 and NA15OAR4320071), the National Integrated Drought Information System, and the Southwest Climate Science Center.