Global warming and Greenland melting affects Atlantic overturning
Global warming and Greenland melting affects Atlantic overturning

A new study shows that the AMOC is more sensitive to warming, including changes in the atmospheric hydrological cycle, than Greenland Ice Sheet melting. However, Greenland Ice Sheet melt further increases the projected AMOC weakening.

Hurricanes more likely to weaken along the US coast during active periods
Hurricanes more likely to weaken along the US coast during active periods

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.

Atlantic heat transport and Agulhas Leakage.
Agulhas leakage, not salinity, linked to the Atlantic meridional circulation slowdown

A new study concludes that the likely source of changes in heat that caused the recent slowdown in the AMOC was from a decrease in the Agulhas Leakage and that changes in convection in the subpolar North Atlantic was an unlikely contributor.

Ocean heat content
A new look at the “global warming hiatus” as a redistribution of energy in the Earth’s system

A new paper shows that global mean surface temperature (GMST) is a measure of the Earth’s surface warming, not a measure of total accumulated heat energy in the Earth’s system. And the slowdown in GMST increase is most likely a redistribution of excess heat into and within the ocean.

Global-mean surface air temperature (SAT) anomalies with respect to a preindustrial reference level.
Paleodata-based global warming projection provides confirmation of CMIP5 estimates

New research looking at glacial-interglacial climate variability during the last 784,000 years finds that Earth's climate sensitivity is strongly dependent on the climate background state with significantly larger values attained during warm phases. Because the Earth is currently in a warm state, the associated increased climate sensitivity has to be taken into account for future warming projections.

Researchers on the RV Knorr
Agulhas Current widens as climate warms

New research finds that changes in the strength of the Agulhas Current, since the early 1990s, has not increased, despite expectations based on rapidly warming sea surface temperatures. Instead, its flow has broadened due to more meanders and eddies.

Welcome to the US Climate Variability and Predictability Program

Changing Arctic public event in Washington, DC

Changing Arctic

Scientists are actively addressing if and how changes in the Arctic are connected to extreme events across the mid-latitudes. In conjunction with a three-day workshop, US CLIVAR is partnering to host a public evening lecture and reception on this topic to take place February 2, from 6:00-8:00 p.m. Click on "read more" to RSVP. 

US CLIVAR welcomes Sonya Legg as new chair of SSC

Sonya Legg, Princeton University

Sonya Legg, Princeton University, has been selected as the new chair of the US CLIVAR Scientific Steering Committee (SSC) to serve through 2017. The SSC chair directs US CLIVAR activities by advancing the Science Plan, identifying new opportunities for engagement, and serving as an ambassador for the program. 

Year In Review: 2016 Research Highlights

Arctic sea ice predictability

From better understanding of the overturning circulation to more insight on the impacts of a warming climate, this collection of research highlights from 2016 features new science conducted by members of the US CLIVAR community. Check out this "Year In Review" and visit the Research Highlights section to learn more. 

Submit an abstract to 2017 Sea Level Rise Conference

Sea level rise will impact coastal communities

The WCRP, jointly with the Intergovernmental Oceanographic Commission of UNESCO, is organizing an international conference on sea level research that will address the existing challenges in describing and predicting regional sea level changes and in quantifying the intrinsic uncertainties. The "Regional Sea Level Changes and Coastal Impacts" conference will be held July 10-14, 2017 at Columbia University in New York. Abstract submissions are due February 15.

Variations: S2S Predictability of Extreme Weather

Variations cover

Society needs credible and usable forecasts of extreme and hazardous events on the subseasonal-to-seasonal (S2S) timescale, particularly as a warming climate amplifies these events. This edition of Variations aims to initiate that conversation by addressing the state of the science for using models to represent and predict extreme and hazardous events on S2S timescales. Also, tune in for a webinar to hear from the contributors on December 8.    

Process Study webinar series for 2016/17

cloud convection

The PSMI Panel is organizing a webinar series on proposed and current process studies from November 2016 to March 2017. The goals of this webinar series are to provide feedback on the plans and distil programmatic lessons learned. The webinars are open to the entire community. To see the complete list of process studies and information on how to join, visit the read more link.