All Announcements

According to a new paper by Sanchez-Franks and Zhang, the underlying physical driver for the decadal variability in the Gulf Stream path and the regional biogeochemical cycling is linked to the low-frequency variability of the large-scale ocean circulation in the Atlantic, also known as Atlantic meridional overturning circulation (AMOC). 

Mark your calendar for a conference that will span the scope of CLIVAR science under the main theme of "Charting the Course of Climate and Ocean Research" on September 18-25, 2016 in Qingdao, China. Abstracts for the main conference and the Early Career Scientist Symposium, poster clusters, and travel grants are due March 25. Town hall proposals should be submitted by June 15. 

Contrary to the conventional expectation that the imposition of subsurface data constraints will draw the AMOC in reanalysis products into agreement, Karspeck et al. finds that the historical AMOC variability is less consistent among the reanalysis products than in corresponding simulations without subsurface data constraints.

The US CLIVAR Scientific Steering Committee (SSC) seeks qualified individuals to serve on its three subsidiary Panels. These Panels formulate science goals and implementation strategies, catalyze and coordinate activities, and work with agencies and international partners to advance the progress of the climate research community. For more information, and to nominate yourself or a colleague, please review the full announcement. Nominations are due December 11.

Vertical exchange in the Southern Ocean between the atmosphere and the surface and deep ocean has a profound influence on the oceanic uptake of anthropogenic carbon and heat, as well as nutrient resupply from the abyss to the surface. Despite this importance, the Southern Ocean remains the most poorly observed and understood part of the global ocean. This collection of articles looks to understand the Southern Ocean's role in climate. 

In the future, the Pacific Ocean's temperature cycles could disrupt more than just December fishing. Known collectively as the El Niño Southern Oscillation, or ENSO, the changing seasonal phenomena known as El Niño and La Niña could lead to at least a doubling of extreme droughts and floods in California later this century.

The PSMI Panel is organizing a set of webinars (45 minutes in length each) on process studies from November 2015 to March 2016. The goals of this webinar series are to provide feedback on the plans and challenges for individual process studies and distill programmatic lessons learned. For information on how to log in, view the calendar on the PSMI webpage and click "look for more" to see the complete list. 

A workshop jointly sponsored by the US CLIVAR and OCB Programs was convened in December 2014 on “Ocean’s Carbon and Heat Uptake: Uncertainties and Metrics” and the challenges of improving observations, process understanding, and modeling. Building on the efforts of the Ocean Carbon Uptake and Southern Ocean Working Groups, this workshop report features key highlights and recommendations for the community.

Earth’s surface air temperature has significantly increased over the 20th century, although this overall global warming has been punctuated by periods of weaker/stalled warming or even cooling. Research suggests that shifts in the circulation of the Pacific Ocean and atmosphere have played a key role in the present hiatus’ development.

In early January 2014, an Arctic air outbreak brought extreme cold and heavy snowfall to central and eastern North America, causing widespread disruption and monetary losses. However, new research by Screen et al., using state-of-the-art climate model simulations, finds that the risk of North American daily cold extremes decreases in the future.