Biomass was selected in May 2013 as ESA’s seventh Earth Explorer mission to quantify forest carbon from space. The mission uses a P-band synthetic aperture radar at ~435 MHz (about 70 cm wavelength) with a 12-meter mesh reflector deployed in orbit to penetrate canopies and sense trunks. It employs fully polarimetric SAR (HH, HV, VH,…
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ICESat-2 (NASA) launched September 15, 2018 on a Delta II rocket and carries the Advanced Topographic Laser Altimeter System (ATLAS), a photon-counting laser that operates from a ~481 km near-polar orbit (92°) with ground tracks repeating every 91 days to map ice sheets, sea-ice freeboard, glacier height, and forest canopy. CryoSat-2 (ESA) launched April 8,…
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The first space images were captured in 1946 from a sub-orbital U.S. V-2 rocket at about 105 km altitude. The first actual satellite photograph of Earth was taken on August 14, 1959 by the U.S. Explorer 6 satellite. In 1960, TIROS-1 transmitted the first television image of Earth from orbit, a milestone for weather observation.…
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