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Earth's Energy Imbalance: Confirmation and Implications
Author(s) -
James E. Hansen,
Larissa Nazarenko,
Reto Rüedy,
Makiko Sato,
J. K. Willis,
Anthony D. Del Genio,
D. Koch,
Andrew A. Lacis,
Ken K. Lo,
Surabi Me,
Tica Novakov,
Judith Perlwitz,
Gary L. Russell,
Gavin A. Schmidt,
N. Tausnev
Publication year - 2005
Publication title -
science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 12.556
H-Index - 1186
eISSN - 1095-9203
pISSN - 0036-8075
DOI - 10.1126/science.1110252
Subject(s) - environmental science , climate change , atmospheric sciences , climate commitment , greenhouse gas , greenhouse effect , climatology , earth (classical element) , climate model , acceleration , global warming , meteorology , effects of global warming , geology , geography , oceanography , physics , classical mechanics , mathematical physics
Our climate model, driven mainly by increasing human-made greenhouse gases and aerosols, among other forcings, calculates that Earth is now absorbing 0.85 +/- 0.15 watts per square meter more energy from the Sun than it is emitting to space. This imbalance is confirmed by precise measurements of increasing ocean heat content over the past 10 years. Implications include (i) the expectation of additional global warming of about 0.6 degrees C without further change of atmospheric composition; (ii) the confirmation of the climate system's lag in responding to forcings, implying the need for anticipatory actions to avoid any specified level of climate change; and (iii) the likelihood of acceleration of ice sheet disintegration and sea level rise.

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