Earth  Sun  ID: 3177

Net Radiation Flux Compared to Clouds (WMS)

The Earth's climate is determined by energy transfer from the sun to the Earth's land, oceans, and atmosphere. As the Earth rotates, the sun lights up only part of the Earth at a time, and some of that incoming solar energy is reflected and some is absorbed, depending on type of area it lights. The amount of reflection and absorption is critical to the climate. An instrument named CERES orbits the Earth every 99 minutes and measures the reflected solar energy. This animation shows the net radiation flux within view of CERES during 29 orbits on June 20 and 21 of 2003. The net flux is the incoming solar flux minus the outgoing reflected (shortwave) and thermal (longwave) radiation. If the flux in a region is positive, the Earth is being warmed by the sun in that region, while cooling regions have a negative flux. It is clear from the animation that the most intensive heating occurs in ocean regions with few clouds, while the second most intense are cloud-free regions over vegetated land areas. Deserts, cloudy regions, and ice caps all reflect enough solar radiation to reduce the amount of heating. Regions of night are, of course, cooling regions because there is no incoming flux at all.

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Visualization Credits

Horace Mitchell (NASA/GSFC): Lead Animator
Eric Sokolowsky (GST): Animator
Bruce A. Wielicki (NASA/LaRC): Scientist
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio

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Solar Radiation and Climate Experiment (SORCE)

Data Used:
GOES-10/Imager 2003/06/20-2003/06/21
GOES-12/Imager 2003/06/20-2003/06/21
SORCE/TIM 2003/06/20-2003/06/21
GOES-9/Imager 2003/06/20-2003/06/21
Meteosat-7/VISSR 2003/06/20-2003/06/21
METEOSAT-6/MVIRI/Cloud Cover 2003/06/20-2003/06/21
GOES-12/Imager/Cloud Cover 2003/06/20-2003/06/21
GOES-10/Imager/Cloud Cover 2003/06/20-2003/06/21
GMS-5/Spin-Scan Imager/Cloud Cover 2003/06/20-2003/06/21
Aqua/CERES/Net Radiant Flux 2003/06/20-2003/06/21
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of this series:

GCMD >> Earth Science >> Atmosphere >> Atmospheric Radiation >> Net Radiation
GCMD >> Earth Science >> Atmosphere >> Atmospheric Radiation >> Radiative Flux
GCMD >> Earth Science >> Atmosphere >> Clouds >> Cloud Top Temperature
NASA Science >> Earth
NASA Science >> Sun

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version