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The Radiative Signature of Upper Tropospheric Moistening

Brian J. Soden, Darren L. Jackson, V. Ramaswamy, M. D. Schwarzkopf and Xianglei Huang
Science
New Series, Vol. 310, No. 5749, Systems-Level Brain Development (Nov. 4, 2005), pp. 841-844
Stable URL: http://www.jstor.org/stable/3842762
Page Count: 4
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The Radiative Signature of Upper Tropospheric Moistening
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Abstract

Climate models predict that the concentration of water vapor in the upper troposphere could double by the end of the century as a result of increases in greenhouse gases. Such moistening plays a key role in amplifying the rate at which the climate warms in response to anthropogenic activities, but has been difficult to detect because of deficiencies in conventional observing systems. We use satellite measurements to highlight a distinct radiative signature of upper tropospheric moistening over the period 1982 to 2004. The observed moistening is accurately captured by climate model simulations and lends further credence to model projections of future global warming.

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