Surface radiation budget: Difference between revisions

Latest revision as of 09:48, 30 March 2024

(Also called surface radiation balance or net radiation, which is the preferred term.) The net radiative flux density across a given point on the earth's surface, averaged over a specified time interval.

Major components of the surface radiation budget are downward shortwave (direct plus diffuse solar radiation), upward shortwave (reflected), downward longwave (emitted from different levels of the atmosphere), and upward longwave (emitted from the surface). On a global annual average, the radiation budget for the earth's surface is positive, indicating an excess of solar heating over longwave loss, and is approximately 100 watts per square meter. Instantaneous values, however, may be positive or negative, and range through many hundreds of watts per square meter. In the annual global mean, the positive surface radiation budget is assumed to be matched equally by a negative atmospheric radiation budget so that the planet as a whole is in radiative equilibrium.

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+{{Term
+|Display title=surface radiation budget
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+|Definitions={{Definition
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+|Meaning=(''Also called'' surface radiation balance or [[net radiation]], which is the  preferred term.) The net [[radiative flux density]] across a given point on the earth's surface, averaged  over a specified time interval.
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+|Explanation=Major components of the surface radiation budget are downward [[shortwave radiation|shortwave]] ([[direct solar radiation|direct]] plus [[diffuse solar radiation|diffuse  solar radiation]]), upward shortwave (reflected), downward [[longwave]] (emitted from different levels  of the [[atmosphere]]), and upward longwave (emitted from the surface). On a global annual average,  the radiation budget for the earth's surface is positive, indicating an excess of solar heating over  longwave loss, and is approximately 100 watts per square meter. Instantaneous values, however,  may be positive or negative, and [[range]] through many hundreds of watts per square meter. In the  annual global mean, the positive surface radiation budget is assumed to be matched equally by a  negative [[atmospheric radiation budget]] so that the planet as a whole is in [[radiative equilibrium]].
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-== surface radiation budget ==
+}}
-  </div>
-<div class="definition"><div class="short_definition">(''Also called'' surface radiation balance or [[net radiation]], which is the  preferred term.) The net [[radiative flux density]] across a given point on the earth's surface, averaged  over a specified time interval.</div><br/> <div class="paragraph">Major components of the surface radiation budget are downward [[shortwave radiation|shortwave]] ([[direct solar radiation|direct]] plus [[diffuse solar radiation|diffuse  solar radiation]]), upward shortwave (reflected), downward [[longwave]] (emitted from different levels  of the [[atmosphere]]), and upward longwave (emitted from the surface). On a global annual average,  the radiation budget for the earth's surface is positive, indicating an excess of solar heating over  longwave loss, and is approximately 100 watts per square meter. Instantaneous values, however,  may be positive or negative, and [[range]] through many hundreds of watts per square meter. In the  annual global mean, the positive surface radiation budget is assumed to be matched equally by a  negative [[atmospheric radiation budget]] so that the planet as a whole is in [[radiative equilibrium]].</div><br/> </div>
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