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.

Modes of Hadley Cell and ENSO
Finding parallels between Hadley Cell expansion and the global warming hiatus

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

Arctic sea ice decline
Understanding the effect of Arctic sea ice decline on the Atlantic meridional overturning circulation

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

Monthly SST anomalies 1920–2016
The complex relationship between El Niño and the California Current System

New research confirms that links between warm and cool years in the California Current System and El Niño are important but imperfect.  

Southern Ocean upwelling pathways
Three-dimensional Southern Ocean upwelling pathways

A new study combines ocean observations with three state-of-the-art ocean models, revealing the full three-dimensional pathway of deep water to the surface of the Southern Ocean for the first time.

Welcome to the US Climate Variability and Predictability Program

Variations: Frontiers in western boundary current research

variations cover

Western boundary current regions are often studied for their intensity of air-sea interaction and mesoscale variability, yet research addressing the implications of these characteristics for biogeochemical cycling has lagged behind. This latest edition of Variations, joint with US OCB, features articles discussing some of the most pressing research questions. 

US CLIVAR Summit Report

summit report cover

The 2017 US CLIVAR Summit brought together over 80 members of the community for three days to review progress, identify opportunities, and develop strategies to advance program goals under the direction of the Science Plan. 

Scientific Steering Committee member Karnauskas receives AGU award


Kris Karnauskas, University of Colorado-Boulder and member of the US CLIVAR Scientific Steering Committee, receives the 2017 AGU Ocean Sciences Early Career Award, which recognizes “significant contributions to and promise in the ocean sciences.” 

Save the Date: AMOC-RAPID International Meeting

NOAA pier

On July 24-27, 2018, international and US 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 submission will open in December. 

New AMOC Science Team vice-chairs

Science Team

New task team vice-chairs for the US AMOC Science Team will begin their leadership terms in November 2017 to guide the next two years of activities. 

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.”

Contribute a research highlight

Finding parallels between Hadley Cell expansion and the global warming hiatus

US CLIVAR aims to feature the latest research results from the community. Check out the collection of research highlights and sort by topic.