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AGU journal highlights -- Jan. 13, 2012
Date:1/13/2012

heat transport from 2002 to 2010 at 41 degrees north latitude. They find the mean heat transport is about 0.5 petawatts. The authors note that this estimate is consistent with previous studies in similar latitudes based on atmospheric flux data but is lower than most hydrographic estimates. Heat transport varies on an annual cycle as well as on shorter time scales, with atmospheric variability explaining most of the short-term variance. Hobbs and Willis note that the period of study was too short to infer any long-term trends, and they emphasize the need for continued monitoring of AMOC.

Send et al. Source: Geophysical Research Letters, doi:10.1029/2011GL049801, 2011
http://dx.doi.org/10.1029/2011GL049801

Title: Observation of decadal change in the Atlantic meridional overturning circulation using 10 years of continuous transport data

Authors: Uwe Send and Matthias Lankhorst: Scripps Institution of Oceanography, La Jolla, California, USA;

Torsten Kanzow: Leibniz Institute of Marine Sciences, Kiel, Germany.

Hobbs and Willis Source: Journal of Geophysical Research-Oceans, doi:10.1029/2011JC007039, 2012
http://dx.doi.org/10.1029/2011JC007039

Title: Midlatitude North Atlantic heat transport: A time series based on satellite and drifter data

Authors: Will R. Hobbs and Joshua K. Willis: NASA Jet Propulsion Laboratory, California, Institute of Technology, Pasadena, California, USA.

2. Methane exceeds nitrous oxide in rivers' contribution to warming

Nitrous oxide (N2O) emissions have been the leading area of concern for scientists investigating the role of streams and rivers in global climate change for the past decade. A potent greenhouse gas, nitrous oxide is produced in riverbed sediments throu
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Contact: Mary Catherine Adams
mcadams@agu.org
202-777-7530
American Geophysical Union
Source:Eurekalert

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