Precipitation differences between positive and negative AMV
Global impacts of the Atlantic Multidecadal Variability

A multi-model simulation study shows that Atlantic Multidecadal Variability warming drives a modification of the Walker Circulation that creates precipitation anomalies over the whole tropical belt.

SAMOC time series at four latitudes in the South Atlantic
Reconstructing the South Atlantic Meridional Overturning Circulation

A new study reconstructs a century-long South Atlantic Meridional Overturning Circulation index, from 1870 to present, finding it is highly correlated to the observational-based SAMOC time series and the Interdecadal Pacific Oscillation is the leading mode of variability.

daily sea surface height anomalies and upper-ocean temperature from the NOAA Kuroshio Extension Observatory
Biophysical drivers of vigorous carbon cycling near the Kuroshio Extension

Approximately seven years of daily-averaged autonomous CO2 observations from NOAA’s Kuroshio Extension Observatory surface mooring were used to close the mixed-layer carbon budget, finding high rates of net community production during the spring bloom period.

Probability density functions of ECS
Climate sensitivity in models consistent with energy budget constraints

Equilibrium climate sensitivity (ECS) — defined as the near-surface air temperature change that would result from a doubling of atmospheric CO2 — is a key metric of climate change. New findings suggest that the ECS from global energy budget constraints is in agreement with values derived from other methods and simulated by global climate models.

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.

Welcome to the US Climate Variability and Predictability Program

Highlights from the US AMOC Science Team meeting

participants of the US AMOC meeting

For three days, members and collaborators of the US AMOC Science Team met in Santa Fe to discuss advances in our understanding of the overturning circulation. Over 60 oral and poster presentations can be found on the website, along with highlights from the discussion. Also, a digital story is available, which captures the progression of the meeting. 

Paleo AMOC workshop report

Paleo AMOC report

This workshop report on "Connecting Paleo & Modern Oceanographic Data to Understand Atlantic Meridional Overturning Circulation Over Decades to Centuries" highlights discussions from the meeting and identifies promising and potentially synergistic research directions for the paleo and modern oceanographic communities. 

Climate Process Team article in Bulletin of the American Meteorological Society

Internal ocean wave mixing processes. Credit: Amy Waterhouse

The Climate Process Team on Internal-Wave Driven Ocean Mixing has published an article on recent advances in the understanding of internal-wave driven turbulent mixing in the ocean interior, along with new parameterizations for global climate ocean models and their climate impacts.

Variations Spring 2017

Deep ocean observing system

The 2017 spring edition of Variations is themed: "A case for observing the deep ocean." This edition highlights the existing “state-of-the-art” methods to measure the deep ocean, some of the scientific insights that have already been gained from these observations, and new methodologies and technologies to expand the network of deep observations. Join us for a webinar on May 16, featuring contributors from this edition. 

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.