World ocean heat content and thermosteric sea level change (0-2000), 1955-2010

Author
Keywords
Abstract
We provide updated estimates of the change of heat content and the thermosteric component of sea level change of the 0-700 and 0-2000 m layers of the world ocean for 1955-2010. Our estimates are based on historical data not previously available, additional modern data, correcting for instrumental biases of bathythermograph data, and correcting or excluding some Argo float data. The heat content of the world ocean for the 0-2000 m layer increased by 24.0x1022 J corresponding to a rate of 0.39 Wm-2 (per unit area of the world ocean) and a volume mean warming of 0.09\textordmasculineC. This warming rate corresponds to a rate of 0.27 Wm-2 per unit area of earth\textquoterights surface. The heat content of the world ocean for the 0-700 m layer increased by 16.7x1022 J corresponding to a rate of 0.27 Wm-2 (per unit area of the world ocean) and a volume mean warming of 0.18\textordmasculineC. The world ocean accounts for approximately 90\% of the warming of the earth system that has occurred since 1955. The thermosteric component of sea level trend is 0.54 mm yr-1 for the 0-2000 m layer and 0.41 mm yr-1 for the 0-700 m layer of the world ocean for 1955-2010.
Year of Publication
2012
Journal
Geophysical Research Letters
Date Published
04/2012
ISSN Number
0094-8276
DOI
10.1029/2012GL051106