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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CO3D comprises four identical S250-based satellites, each weighing about 250–300 kg with 100% electric propulsion, delivering ~50 cm spatial-resolution optical imagery. It aims to produce a global Digital Surface Model with ~1 m vertical accuracy and to map ~40 million km² of Earth’s land per year in 3D. The system targets roughly 90% of the…
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Google Earth offers imagery from global 15 m resolution down to sub-meter detail (30–50 cm) in many urban areas, plus 3D buildings and terrain across hundreds of cities, accessible on web, iOS/Android, and Google Earth Pro desktop. Imagery updates on Google Earth are rolling, with urban areas refreshed roughly every 1–3 years, rural areas 5+…
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NOAA Earth in Real-Time offers an interactive, real-time global weather map with live imagery from GOES geostationary satellites, updated continuously and accessible free via nesdis.noaa.gov. NASA Worldview provides more than 1,000 global image layers (MODIS, VIIRS, Sentinel-2, etc.) with many layers updated within three hours of observation, plus animation, date comparison, and data download, all…
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