Rainfall over Florida is impacted by ocean currents
Future changes in ocean currents around Florida impact rainfall over land

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.

sea ice thickness
Antarctic sea ice helps maintain the Southern Ocean overturning circulation

Recent trends in sea ice have been studied heavily. A less well-understood problem is how sea ice affects the underlying ocean, particularly the poorly observed Southern Ocean. A new study shows how the seasonal drift of Antarctic sea ice may be more important for the global ocean overturning circulation than previously realized.

Modes shows lag correlations with temperature
A cautionary note on the use of surface heat fluxes to diagnose the causes of the Atlantic Multidecadal Oscillation

The Atlantic Multidecadal Oscillation is a naturally occurring pattern of sea surface temperature change that is seen in the North Atlantic on decadal timescales and affects weather and climate. Some have suggested that the AMO is a consequence of variable large-scale ocean circulation. Yet new research suggests otherwise.

Modeling simulations of the AMO index
The central role of ocean dynamics in the Atlantic Multidecadal Oscillation

In a recent technical comment, Zhang et al. show that ocean dynamics play a central role in the Atlantic Multidecadal Oscillation (AMO), and the previous claims that “the AMO is a thermodynamic response of the ocean mixed layer to stochastic atmospheric forcing, and ocean circulation changes have no role in causing the AMO” are not justified.

Salinity and atmospheric circulation
Ocean salinity is a predictor of terrestrial precipitation

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.

Oxygen loss in the ocean
Detecting human influence on oceanic oxygen

There is very little doubt that human-driven climate warming will result in widespread ocean deoxygenation; however, substantial natural variation and sparse observational records make it difficult to determine when. New research suggests that human-driven changes in oxygen levels are evident in many oceanic regions now and will be widespread in the next 15-20 years.

Welcome to the US Climate Variability and Predictability Program

Submit ideas for a deep ocean observing network

Ocean observing

Organizers for the Deep Ocean Observing Strategy (DOOS) are conducting a deep ocean observation inventory to lay the foundation for development and coordination of regional, national, and global deep ocean observing systems. They are looking for input on the use of and needs for deep ocean observations. Survey responses are due by September 7. 

White paper on translating process understanding for climate models

Global SST from NOAA model

A new white paper has been released based on a 2015 US CLIVAR workshop, "Translating Process Understanding to Improve Climate Models." The document summarizes responses from a community questionnaire, workshop presentations and discussions, and recommendations to help inform the broad research community and agency considerations.

Executive Director sought for CLIVAR International Project Office

CLIVAR international logo

The First Institute of Oceanography (FIO) and the World Climate Research Programme (WCRP) invite applications for the post of Executive Director of the International CLIVAR Project Office, based in Qingdao, China. The Executive Director will be responsible for a range of activities including fulfilling CLIVAR priorities as part of WCRP’s objectives and goals, managing the project office, participating in relevant meetings and workshops, promoting CLIVAR objectives, and seeking sources of additional funding. The position is available starting October 1. 

Intra-Americas Seas workshop report

This report highlights the virtual workshop that was held over three half-day sessions (September 9-11, 2015) and featured 47 oral and poster presentations that spanned observational and modeling studies and timescales from the paleoclimate to secular change, and also covered a wide range of phenomenological studies (e.g., tropical cyclones, mid-summer droughts, low level jets) for the Intra-Americas Seas. 

Register for the workshop on Arctic change and mid-latitude linkages

Arctic sea ice

Join us in February 2017 for a workshop on Arctic Change and Its Influence on Mid-Latitude Climate and Weather in Washington, DC. The workshop will explore the linkages between changes in the Arctic—warming more than twice as fast as the global average, rapid loss of sea ice, and collapse of warm season snow cover—with a period of ostensibly more frequent events of extreme weather across the mid-latitudes. The workshop is open to all, and the deadline to apply and submit an abstract is August 31. 

2015 Summit Report now available

Summit report cover

The 2015 US CLIVAR Summit was held in Tucson, Arizona on August 4-6 and brought together more than 50 participants from the scientific community and federal agencies. This report highlights presentations and discussion at the Summit to review progress, identify opportunities, and develop strategies to advance US CLIVAR goals. 

Contribute a research highlights to the website

Hurricane tracks

Do you have a new paper with interesting findings that feature US CLIVAR-related research? Consider submitting a research highlight to the website. The purpose is to help share your findings with the broader scientific community. For more information about the format and who can submit, read our guidelines and some past posts.