Carbon fluxes from the Southern Ocean to the atmosphere
Designing a carbon and heat observing system for the Southern Ocean

To better understand climate variability and the Southern Ocean, researchers estimate spatial correlations of ocean properties to reveal how many observing platforms are necessary to adequately observe carbon and heat.

Sensitivity of zonal winds
Jet stream response to Arctic temperature swings

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. 

Atlantic hurricanes
Atlantic overturning circulation and the recent decline of Atlantic major hurricane frequency

Using observations and a coupled Earth system model, a new study shows that the decline of the Atlantic major hurricane frequency during 2005–2015 is associated with a weakening of the AMOC.

Observed ocean-atmosphere anomaly patterns during multi-year La Niña event
Impact and predictability of multi-year La Niña events

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

A Southern Ocean polynya
Modeling multidecadal cycles of Southern Ocean convection

Researchers observed a natural, regular, multidecadal oscillation between periods of Southern Ocean open-sea convection, which can act a release valve for the ocean’s heat, and non-convective periods.

monthly-mean analysis of oxygen isotopes in precipitation and gross primary productivity
Ice-core evidence for southward shifts of tropical rainfall in response to iceberg discharge during the last glacial period

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.

Welcome to the US Climate Variability and Predictability Program

Contribute a testimonial celebrating US CLIVAR

Researchers discussing science during a US CLIVAR workshop

In recognition of 20 years of advancing climate research, US CLIVAR is seeking testimonials from the community and agency sponsors who have helped shape the program. Read what the community has to say and please consider sharing your testimonial. 

Abstracts due Feb 23 for TPOS 2020 workshop

TPOS 2020 logo

Abstracts and registration are now open for a workshop on Bridging Sustained Observations & Data Assimilation for TPOS 2020 to be held in Boulder, Colorado, May 1-3, 2018. This workshop will bring together the observational, modeling, and data assimilation communities to rethink the next-generation sustained observing system in the tropical Pacific.  

US CLIVAR celebrates 20 years

US CLIVAR 20th  anniversary

For the past 20 years, the US CLIVAR program has addressed some of the most pressing research questions to understand the climate system, particularly the great uncertainties related to the role of the ocean. To recognize the community and build on achievements, the program will host several events throughout the year. 

Abstracts due Feb 28 for International AMOC Science Meeting

NOAA pier

On July 24-27, 2018, scientists will join together to exchange ideas and develop a better understanding of the Atlantic meridional overturning circulation (AMOC) and its influence on weather, climate, and ecosystems. The meeting will take place in Coconut Grove, Florida. Abstract submissions are due February 28. 

IV International Conference on El Niño-Southern Oscillation

El Nino

Abstracts are now being accepted for an international conference on ENSO in a Warmer Climate. The goal of the conference is to review progress on the science of ENSO with a focus on examining the range of ENSO “flavors.”