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Title: Future loss of Arctic sea-ice cover could drive a substantial decrease in California’s rainfall [Seasonally ice-free Arctic favors dry California]

Journal Article · · Nature Communications
 [1];  [1];  [1]; ORCiD logo [1];  [2];  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Climate Modeling and Analysis
  2. Univ. of California, Berkeley, CA (United States). Dept. of Geography and Berkeley Atmospheric Sciences Center
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Center for Accelerator Mass Spectrometry

© 2017 The Author(s). From 2012 to 2016, California experienced one of the worst droughts since the start of observational records. As in previous dry periods, precipitation-inducing winter storms were steered away from California by a persistent atmospheric ridging system in the North Pacific. Here we identify a new link between Arctic sea-ice loss and the North Pacific geopotential ridge development. In a two-step teleconnection, sea-ice changes lead to reorganization of tropical convection that in turn triggers an anticyclonic response over the North Pacific, resulting in significant drying over California. These findings suggest that the ability of climate models to accurately estimate future precipitation changes over California is also linked to the fidelity with which future sea-ice changes are simulated. We conclude that sea-ice loss of the magnitude expected in the next decades could substantially impact California's precipitation, thus highlighting another mechanism by which human-caused climate change could exacerbate future California droughts.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23), Climate and Environmental Sciences Division (SC-23.1 )
Grant/Contract Number:
AC52-07NA27344; AC02-05CH11231
OSTI ID:
1466961
Alternate ID(s):
OSTI ID: 1476579
Report Number(s):
LLNL-JRNL-680635; 804858
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 70 works
Citation information provided by
Web of Science

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Cited By (24)

Evidence for Predictive Skill of High-Latitude Climate Due to Midsummer Sea Ice Extent Anomalies journal September 2018
Precipitation and prey abundance influence food habits of an invasive carnivore journal April 2019
Influence of Arctic sea-ice variability on Pacific trade winds journal January 2020
Survival of Juvenile Fall-Run Chinook Salmon through the San Joaquin River Delta, California, 2010-2015 journal May 2018
North-south dipole in winter hydroclimate in the western United States during the last deglaciation journal March 2019
Mountain snowpack response to different levels of warming journal October 2018
Changing state of Arctic sea ice across all seasons journal September 2018
Attributing the U.S. Southwest's Recent Shift Into Drier Conditions journal June 2018
Runoff Modeling of a Coastal Basin to Assess Variations in Response to Shifting Climate and Land Use: Implications for Managed Recharge journal February 2019
Rediscovery of the southern California endemic American Keeled Slug Anadenulus cockerelli (Hemphill, 1890) after a 68-year hiatus journal March 2018
Human influence on the seasonal cycle of tropospheric temperature journal July 2018
The Influence of Arctic Amplification on Mid-latitude Weather and Climate journal June 2018
Tropical Decadal Variability and the Rate of Arctic Sea Ice Decrease journal October 2018
Increasing precipitation volatility in twenty-first-century California journal April 2018
The Polar Amplification Model Intercomparison Project (PAMIP) contribution to CMIP6: investigating the causes and consequences of polar amplification journal January 2019
North American Weather Regimes Are Becoming More Persistent: Is Arctic Amplification a Factor? journal October 2018
Global Coupled Climate Response to Polar Sea Ice Loss: Evaluating the Effectiveness of Different Ice‐Constraining Approaches journal February 2020
Effects of 21st‐century climate, land use, and disturbances on ecosystem carbon balance in California journal June 2019
How Robust is the Atmospheric Response to Projected Arctic Sea Ice Loss Across Climate Models? journal October 2019
Fast Response of the Tropics to an Abrupt Loss of Arctic Sea Ice via Ocean Dynamics journal May 2018
Cascading regime shifts within and across scales journal December 2018
Global Impacts of Arctic Sea Ice Loss Mediated by the Atlantic Meridional Overturning Circulation journal January 2019
The Polar Amplification Model Intercomparison Project (PAMIP) contribution to CMIP6: investigating the causes and consequences of polar amplification text January 2019
The Polar Amplification Model Intercomparison Project (PAMIP) contribution to CMIP6: investigating the causes and consequences of polar amplification text January 2019

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