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From: Dan Richter (1:317/3)
To: All
Date: Sat, 22.05.21 13:00
MODIS Pic of the Day 22 May 2021
May 22, 2021 - Bloom off South Australia province


Bloom off South Australia province

A colorful bloom of phytoplankton swirled in the Great Australian Bight
south of the Fleurieu Peninsula in autumn 2021. The Moderate Resolution
Imaging Spectroradiometer (MODIS) on board NASA’s Aqua satellite
acquired this true-color image on May 21.

Phytoplankton are microscopic marine organisms that thrive in
nutrient-rich cold waters. The striking turquoise color is caused in
part by sunlight reflecting off of chlorophyll in the phytoplankton,
which (like terrestrial plants) use the process of photosynthesis to
create carbohydrates from carbon dioxide and water. The milky-blue tone
of the bloom suggests that the phytoplankton are probably a species
contain a coat of calcium carbonate, white chalk, which lends a white
tint to the organisms.

Image Facts
Satellite: Aqua
Date Acquired: 5/21/2021
Resolutions: 1km (404.4 KB), 500m (1005.9 KB), 250m (2.3
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC
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