Contribution of temperature and precipitation anomalies to the California drought during 2012–2015

Luo, Lifeng; Apps, Deanna; Arcand, Samuel; Xu, Huating; Pan, Ming; Hoerling, Martin

doi:10.1002/2016GL072027

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i

Contribution of temperature and precipitation anomalies to the California drought during 2012–2015

2017
By Luo, Lifeng ; Apps, Deanna ; Arcand, Samuel ; ...
Source: Geophysical Research Letters 44(7): 3184-3192, 2017

[PDF-2.36 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Luo, Lifeng ; Apps, Deanna ; Arcand, Samuel ; Xu, Huating ; Pan, Ming ; ... More +

Luo, Lifeng ; Apps, Deanna ; Arcand, Samuel ; Xu, Huating ; Pan, Ming ; Hoerling, Martin Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory)

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory) Less -
Description:

The recent multiyear drought over California was characterized by large precipitation deficits and abnormally high temperatures during both wet and dry seasons. This study investigates and quantifies the contributions of precipitation and temperature anomalies to the development of the multiyear drought with a set of modeling experiments where the anomalies are either removed or randomly replaced with other historical observations. The study reveals that precipitation deficits have been largely responsible for producing the extreme agricultural drought (i.e., large soil moisture deficits) while warmer temperatures have only marginally intensified the drought. However, the warmer temperatures over the high‐elevation areas during the wet season have contributed equally or more than the precipitation deficits to the reduction of snowpack. The interplay between temperature and precipitation anomalies in space and time also appears to be important for the drought development.
Keywords:

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Droughts
Source:

Geophysical Research Letters 44(7): 3184-3192, 2017
DOI:

https://doi.org/10.1002/2016GL072027
Document Type:

Journal Article
Funding:

Grant no. NA12OAR4310081
Place as Subject:

California
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Submitted
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urn:sha256:8675e4b96e56260edc0a411ad4fb9b748d4b3da2babcdd184ec0cd2f7acc6492
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https://repository.library.noaa.gov/view/noaa/28106/noaa_28106_DS1.pdf
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Contribution of temperature and precipitation anomalies to the California drought during 2012–2015

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