Climate Change

Ground water levels over time
April 22, 2016

Many people were counting on the strong El Niño this winter to produce surplus water to recharge the groundwater and make up for what’s been pumped out due to the severe drought. However, a new study found that the groundwater level in California’s Central Valley has continued to decline even when drought has recovered.

Small island nations aridity
April 19, 2016

Future changes in freshwater availability are a major concern in the context of climate change. New research finds that overall changes to island freshwater balance will shift towards greater aridity for over 73% of 80 globally distributed island groups identified, impacting 16 million people by mid-century.

Arctic anomalies
March 24, 2016

Right from the beginning of 2016 new records were set in the Arctic: warmest air temperature on record in both January and February, and the lowest sea ice cover in February. This year’s record high temperature and low sea ice cover increases concerns about what will happen next in the Arctic and globally under a changing climate.

Global ocean carbon sink
March 17, 2016

The ocean carbon sink is a cumulative net sink of anthropogenic carbon from the atmosphere, having absorbed 41% of all emissions due to fossil fuel and cement manufacturing. New research uses a climate model to estimate when growth of the carbon sink could be detected from the noise of the natural variability.

Arctic sea ice schematic
February 11, 2016

The fate of sea ice in the Arctic Ocean in the coming years and decades is dependent upon our understanding of the complex ocean–ice–air interactions and feedbacks to the system. A new paper by Carmack et al. identifies the critical processes, key questions, and required elements for a research agenda to study this new Arctic environment.

AMOC circulation
February 1, 2016

The Atlantic Meridional Overturning Circulation (AMOC), a large-scale circulation pattern in the Atlantic, plays a central role in climate through its heat and freshwater transports. New research proposes monitoring a specific region that may enable scientists to better predict AMOC variability and future climate.

Warming in Norht Atlantic
January 4, 2016

In the Northwest Atlantic, the ensemble of global climate models has a warm bias in sea surface temperature due to a misrepresentation of the Gulf Stream position; thus, existing climate change projections could be underestimating the warming rate in the upper ocean by two to three times, according to new research by Saba et al.

Cold winter days in US
October 13, 2015

In early January 2014, an Arctic air outbreak brought extreme cold and heavy snowfall to central and eastern North America, causing widespread disruption and monetary losses. However, new research using state-of-the-art climate model simulations finds that the risk of North American daily cold extremes decreases in the future.

Coral reefs Guam
October 5, 2015

Over the coming decades, the tropical Pacific is likely to experience more extreme sea level swings on timescales of several years. The culprit is a change in the El Niño-Southern Oscillation and its characteristic Pacific wind response, according to a new study using CMIP5 climate change projections.

Carbon in the Southern Ocean
July 30, 2015

The Southern Ocean plays a key role in mitigating the anthropogenic greenhouse emissions by contributing approximately 40% of the global oceanic carbon sink. Recent work investigates the future evolution of Southern Ocean carbon storage under a climate warming scenario.

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