Weather

Hurricane Harvey and Louisiana flood
June 18, 2018

Regional model simulations suggest that post-1980 warming in both the ocean and atmosphere resulted in an estimated 20% increase of the accumulated precipitation for Hurricane Harvey. 

hurricane intensity
March 19, 2018

Research shows that SST may explain a significantly smaller percentage of the variance in tropical cyclone intensification in the Atlantic as compared to the western North Pacific and eastern-central Pacific.

Sensitivity of the zonal winds in the Arctic
January 4, 2018

New research shows that regional Arctic temperature swings can influence jet stream positions and speeds but only account for a small fraction of the jet variations, implying other factors are crucial for predicting jet stream behavior. 

Observed ocean-atmosphere anomaly patterns multi-year La Niña event
November 28, 2017

New findings could improve our ability to predict both the strength and duration of US droughts caused by La Niña.

monthly-mean analysis of oxygen isotopes in precipitation and gross primary productivity
October 25, 2017

The most extreme increases in the oxygen 18-to-16 ratio over the last fifty thousand years occur immediately after Heinrich events, strongly suggesting that tropical rainfall shifted south in response to Heinrich events.

map showing anomalies in SST and total soil water
August 1, 2017

Researchers have developed a state-of-the-art drought and wildfire prediction system, showing the multi-year predictive skills of drought and wildfire conditions beyond the typical timescale of seasonal climate forecast models. 

Monthly changes strength of the zonal flow
July 6, 2017

Looking at modeling simulations, researchers explore how various characteristics of the mid-latitude atmospheric circulation evolve over the 21st-century and find that changes are sector-dependent.

Hurricanes more likely to weaken along the US coast during active periods
January 6, 2017

A new study shows that when conditions in the deep tropics are good for hurricane intensification, they are bad along the US coast. This sets up a barrier around the US coast during active hurricane periods that inhibits hurricanes from strengthening and usually causes them to weaken.

Currents and rainfall around Florida
August 10, 2016

Robust surface ocean currents around Peninsular Florida, namely the Loop and the Florida Currents, are shown to affect the terrestrial wet season of Peninsular Florida. New research shows that differences in the ocean bathymetry (or topography) of two novel numerical climate model integrations can influence the ocean currents and their impact on regional climate.

Salinity and atmospheric circulation
June 2, 2016

Ocean-to-land moisture transport leaves an imprint on sea surface salinity, making this “nature’s rain gauge” to measure the variations of the water cycle. Two new studies provide strong evidence that salinity in the subtropical North Atlantic is a skillful predictor for precipitation in the African Sahel and the US Midwest.

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