Recently, namely on August 7, 2015, the submarine set off into the abyss of a whirlpool of algae and took this fascinating picture.
Bright green ribbons with a high concentration of cyanobacteria drift in the maelstrom of the Baltic Sea waterways off the shores of Latvia and Estonia.
The Guardian-2 satellite orbiting the earth in a solar-synchronous polar orbit at an average altitude of 800 km from the surface of the planet, using its multi-spectral device (MSI) with 13 different wavelengths with resolutions up to 10 meters, tracks changes in vegetation above the surface sushi.
Despite the fact that the spacecraft was assigned to track vegetation above the Earth, it is so sensitive to chlorophyll emissions from manufacturing plants that large concentrations of algae were easily detected.
The resulting images will help researchers track algal blooms and the direction of sea currents. “Now we have additional, but also important information to monitor the development of potentially harmful algae,” said ESA lead scientist, Craig Donlon.
Large concentrations of algae, and mostly their blooming can be toxic to aquatic ecosystems, depleting the oxygen content of the water and reducing the amount of sunlight that can penetrate deep water. Because of their harmful effects, blooms are now controlled by researchers.
The Sentinel-2A was launched from the Vega rocket at the European launch site in French Guiana on June 23, 2015. It was the second spacecraft used under the Copernicus program, which could eventually replace 30 less-needed satellites and independently control the surface of the Earth and the ocean.