NASA’s Total Ozone Mapping Spectrometer (TOMS) provides measurements that enable scientists to accurately estimate how much of the sun’s UV-B (290 to 320 nm) radiation reaches the Earth's surface. Too much exposure to these wavelengths causes sunburn in human skin.

The false-color image above is a global map, averaged from TOMS snapshots collected every day over a one-month period, showing where more or less UV radiation reaches the surface. Yellow pixels show the highest levels of radiation at the surface, red and pink hues are intermediate values, and white indicates little or no UV exposure.

Author: Valery35

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