Climate Change

trends in the latitude of the (left) Northern Hemisphere and (right) Southern Hemisphere tropical edg
August 8, 2018

Observed Southern Hemisphere summer and fall trends of tropical expansion are well captured in model simulations of the late 20th and early 21st centuries, consistent with the roles of increasing greenhouse gases and stratospheric ozone depletion in driving poleward circulation shifts during these seasons.

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. 

sensible heat and evaporation fluxes in the Arctic Ocean
April 19, 2018

Researchers conclude that changes in sensible heat transfer and evaporation fluxes — in response to strong regional trends in sea ice cover — are becoming increasingly consequential to Arctic climate variability and change. 

Future heat wave regions in the US
March 23, 2018

Climate change will drive more frequent and extreme summer heat waves in the western US by late the 2020s, the Great Lakes region by the mid-2030s, and in the northern and southern Plains by the 2050s and 2070s, respectively.

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.

modes of the Hadley cell and ENSO
September 29, 2017

As the decadal ENSO cycle transitions to a warm phase, a new study expects accelerated global warming and a “hiatus” in Hadley Cell expansion. 

https://usclivar.org/research-highlights/understanding-effect-arctic-sea-ice-decline-atlantic-meridional-overturning
September 18, 2017

The Arctic sea ice decline may explain the suggested slow-down of the Atlantic meridional overturning circulation and the persistence of the Warming Hole.

modeling hindcasts and projections of sea level rise and overturning circulation
August 4, 2017

A new study helps clarify how past and future coastal sea level changes are related to local winds and large-scale ocean circulation.

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. 

Schematic of the warming response of West Antarctic Peninsula waters to East Antarctic wind perturbation.
July 20, 2017

Ocean melting of marine-terminating ice sheets poses a profound threat to the global coastal environment with approximately five meters of sea level rise locked up in the ice sheets around the West Antarctic region.

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