DSCOVR

DSCOVR (Deep Space Climate Observatory) is a NASA/NOAA Earth and space-weather observatory positioned at the Sun-Earth L1 Lagrange point, approximately 1.5 million km from Earth. Launched 11 February 2015 on a SpaceX Falcon 9, the satellite is a refurbished version of the original Triana spacecraft. NOAA operates the spacecraft and its space-weather instruments; NASA operates the two Earth-facing science instruments EPIC and NISTAR.^[1][2]

The Earth Polychromatic Imaging Camera (EPIC) captures 10-band spectral images of the full sunlit Earth disk, supporting vegetation mapping, tropospheric trace-gas column retrieval, and aerosol monitoring.^[3] The National Institute of Standards and Technology Advanced Radiometer (NISTAR) measures absolute broadband solar-reflected and Earth-emitted irradiance from the complete sunlit face of the planet, contributing to Earth radiation budget science.^[4]

The mission also carries a fluxgate magnetometer and charged-particle instruments (an electron spectrometer and a Faraday Cup) for upstream solar-wind plasma and interplanetary magnetic field monitoring, feeding operational NOAA space-weather products. WMO OSCAR lists the mission status as operational with an expected service life extending to at least 2029.^[5]