Schematic representation of the atmospheric “non-frontal” component
New perspectives regarding Gulf Stream and Kuroshio Extension influence on the atmosphere

New research illustrates that the key to recognizing the influence of the Gulf Stream and Kuroshio Extension on the seasonal mean and longer-term climate is through a proper understanding of how the ocean influences atmospheric fronts.

Boxplots showing how well model forecasts capture the observations between the two winter seasons, 2016–17 minus 2015–16,
California winter precipitation linked to the Arctic Oscillation

California precipitation is well forecast when the Arctic Oscillation phase is correctly captured by a state-of-the-art forecast system, GloSea5.

Schematic representation of proposed dynamical mechanisms in summer.
The influence of Arctic amplification on mid-latitude summer circulation

Researchers conduct a comprehensive review of research on summer weather stalling, focusing on the influence of Arctic amplification and how it could interact with other factors influenced by climate change.

Subsurface ocean heat content anomalies regressed onto low-pass filtered time series of eastern tropical Pacific sea surface temperature anomalies. The black boxes outline the eastern (10°–20°S, 100°–120°E) and western (10°–20°S, 50°–90°E) Indian Ocean, showing the east-west dipole structure
Pacific influences decadal Indian Ocean heat content via two distinct mechanisms

In two recent papers, Jin and coauthors investigated how decadal variations of subsurface ocean heat content (50–300 m) in the Indian Ocean respond to conditions in the Pacific region.

simple linear model accounting for changes in drying ratio and mean source distance (MSD)
Global patterns of evaporation and precipitation leave a traceable isotopic fingerprint

A new study shows that a simple linear model that accounts for changes in mean source distance, as well as the local drying ratio, can successfully replicate water isotopic variations in space and time.

The Observational Large Ensemble (Obs-LE) can be used to assess the relative roles of internal variability and anthropogenic influence on 50-year trends in (a-b) temperature and (c-d) precipitation over land.
Developing Observational Large Ensembles for climate variability

Researchers have developed a complementary approach to creating ensembles for seasonal-average temperature and precipitation over land that can also be used to study internal variability.

Welcome to the US Climate Variability and Predictability Program

Sources and Sinks of Ocean Mesoscale Eddy Energy

meeting flyer

Abstract submission and registration are now open for a workshop on Sources and Sinks of Ocean Mesoscale Eddy Energy that will take place March 12–14, 2019 in Tallahassee, Florida. Abstracts are due November 16. 

Daily summaries from the subseasonal to decadal conference

Lisa Goddard, Columbia University, presenting at the conference

Over 300 scientists kicked off the International Conferences on Subseasonal to Decadal Prediction with the latest research results from the weather and climate community. Read the daily summaries for a few highlights from the meeting. 

Ocean Carbon Hot Spots workshop report

A group gathers to discuss research on the beach by MBARI

The Ocean Carbon Hot Spots workshop brought together the research community studying western boundary current regions to discuss gaps in understanding, observing and modeling challenges, and newly available tools. This report synthesizes the workshop and identifies recommendations for next steps. 

Variations, Summer 2018: Uncertainty in climate projections

variations cover

Uncertainty is an inherent part of science and is fundamental to scientific progress. The articles in this edition shed light on some ways in which uncertainties in climate projections can be assessed, managed, and communicated.

Community testimonials on US CLIVAR's 20 years

testimonial headshots

Members of the US CLIVAR community are sharing some of their thoughts on the value to the scientific community, stories and achievements from over the years, and hopes for the future. 

US AMOC Science Team plans to wind down

ocean sunset

The US AMOC Science Team will officially sunset on December 31, 2020. Leading up to this date, the team will undertake activities to ensure the community is well-positioned to continue advancing AMOC research. Ideas and suggestion are welcome. 

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.