Buoyancy frequencies in Caribbean Sea
Warm eddies in Caribbean Sea could be a link to tropical cyclone intensification

A recent study highlights results obtained from an aircraft ocean survey that targeted a large warm core eddy in the eastern Caribbean Sea, where upper ocean measurements are crucial to understanding the complexities of heat and moisture transfer during the passage of tropical cyclones.

the Warm Blob
Coastal warming related to ‘the Blob’

New research shows the extent and development of 'the Blob' using satellite surface temperature data to reveal warm temperature anomalies appearing as early as March 2014 in the central and southern California coast, and eventually extending to the entire West Coast and dissipating in August 2016.

Time series of eastern Indian Ocean thermocline depth in an ocean model hindcast.
Multidecadal Indian Ocean variability linked to the Pacific

In a new paper from Journal of Climate, researchers show that changes in the Indian Ocean subsurface heat content over the last 50 years can be linked to Pacific Ocean variability associated with the Pacific Decadal Oscillation/Interdecadal Pacific Oscillation.

GO-SHIP observations suggest strongly accelerated AABW freshening since 2007.
Deep southeast Indian Ocean waters see accelerated freshening

A recent investigation has shown that in the abyssal southeast Indian Ocean the Antarctic Bottom Water (AABW) freshening and warming have changed over the last decade. After a third full repeat of line IO8S in the region, GO-SHIP observations suggest strongly accelerated AABW freshening since 2007.

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.

Welcome to the US Climate Variability and Predictability Program

2017 Summit to be held in Baltimore

Baltimore inner harbor

Now being hosted biennially, the US CLIVAR Summit will bring together the members of the Scientific Steering Committee and its three implementation Panels, agency managers, and invited speakers to review progress, identify opportunities, and develop strategies to advance program goals. The meeting will be held August 8-10 in Baltimore, Maryland. 

2017 spring workshop call

ENSO workshop 2016

The US CLIVAR program annually sponsors open community workshops, conferences, and science meetings to coordinate, plan, and implement new or focused activities for the benefit of the scientific community and relevant to the goals of US CLIVAR. Funding is limited and not all submitted workshop requests may be supported. The due date for requests is April 7, 2017

Paper on reducing model SST biases in the eastern tropical Atlantic and Pacific Oceans

Sea surface currents and temperature

Recently, the US CLIVAR Eastern Tropical Ocean Synthesis Working Group published an updated assessment on "Challenges and Prospects for Reducing Coupled Climate Model SST Biases in the Eastern Tropical Atlantic and Pacific Oceans" in the Bulletin of the American Meteorological Society. This paper is the result of the Working Group collaboration and activities from 2012-2015. 

POS Panel report now available

Global Tropical Moored Buoy, NOAA PMEL

The 2016 Phenomena, Observations, and Synthesis (POS) Panel meeting focused on climate diagnostics, climate monitoring and analysis status and needs, understanding climate variations and linkages, and new autonomous technologies, among other topics. This report captures the presentations, discussions, recommendations, and action items the Panel agreed upon at the meeting.

Welcome new SSC co-chair and Panel members


US CLIVAR welcomes the following new members, who will help science planning and implementation of program goals: Tony Lee, NASA Jet Propulsion Lab (SSC co-chair); Shane Elipot, University of Miami, and Aneesh Subramanian, Scripps Institution of Oceanography (POS Panel members); Victoria Coles, University of Maryland, William Collins, Lawrence Berkeley National Lab & UC-Berkeley, and Samson Hagos, Pacific Northwest National Lab (PSMI Panel members); and Mona Behl, University of Georgia, and Andy Wood, National Center for Atmospheric Research (PPAI Panel members). 

Variations: Forecasting ENSO impacts in the California Current System

El Nino

El Niño-Southern Oscillation (ENSO) events have far-reaching influence on the atmosphere and ocean that can dramatically impact marine ecosystems, including those along the West Coast of North America. The winter edition of Variations, joint with the US Ocean Carbon Biogeochemistry Program, features articles discussing the ability to predict these impacts. Join in for a webinar on February 15 at 12:00 p.m ET to hear the authors discuss their research.