File:Black Body Friday (NESDIS 2017-11-24).jpg

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Captions

Captions

Ever wonder why the ocean in VIIRS true color images isn’t blue? It is because these images are not pictures, but generated from a variety of surface reflectance and radiation measurements.

Summary

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Description
English: Ever wonder why the ocean in VIIRS true color images isn’t blue? It is because these images are not pictures, but generated from a variety of surface reflectance and radiation measurements. The ocean acts like a black body, absorbing most of the visible light and radiating energy in the near-infrared to longwave infrared spectrums. Because of the lack of reflected visible light, especially blue, the ocean appears almost black in these images, except where there are oceanographic features such as turbidity or plankton blooms, which alter the black body nature of the ocean surface. This NOAA/NASA Suomi NPP VIIRS image from July 4, 2017 shows the stark contrast between the highly reflective snow covered surfaces of northern Canada and Greenland, next to the areas of open water that appear black. Areas with sea ice appear to have a bluish color.
Date 24 November 2017 (upload date)
Source Black Body Friday
Author NOAA

Licensing

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Public domain
This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties.

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current15:57, 2 June 2024Thumbnail for version as of 15:57, 2 June 20241,920 × 1,080 (423 KB)OptimusPrimeBot (talk | contribs)#Spacemedia - Upload of https://nesdis-prod.s3.amazonaws.com/2021-07/2153v1_20171124-BlackBox.jpeg via Commons:Spacemedia

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