אסיף מאגר המחקר החקלאי

Radiative forcing and temperature change at Potsdam between 1893 and 2012

Year:

2014

Source of publication :

Authors :

Volume :

119

Co-Authors:

Stanhill, G., Department of Environmental Physics and Irrigation, Institute of Soil, Water and Environmental Sciences, ARO Volcani Center, Bet Dagan, Israel
Ahiman, O., Department of Environmental Physics and Irrigation, Institute of Soil, Water and Environmental Sciences, ARO Volcani Center, Bet Dagan, Israel

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Abstract:

Radiative forcing in both the short and long-wave lengths reaching the Earth’s surface accounted for more than 80% of the inter-annual variations in the mean yearly temperatures measured at Potsdam, Germany, during the last 120 years. Three quarters of the increase in the long-wave flux was due to changes in the water content of the lower atmosphere; the remainder was attributed to increases in CO2 and other anthropogenic, radiatively active gases. Over the period radiative forcing in the short-wave flux slightly exceeded that in the long wave, but its effect on air temperature was much less as the climate sensitivity to atmospheric radiation, 0.187°C per W m-2, was three times greater than to short-wave global radiation. This anomalous finding, similar to that previously reported at two coastal sites, awaits explanation as does the complex interaction existing between radiative forcing and advection in determining temperature change. © 2014. American Geophysical Union. All Rights Reserved.

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