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MYD21 Version 6.1 provides daily land surface temperature and 3-band emissivity data in five-minute temporal increments from the MODIS instrument on NASA's Aqua satellite. The swath data has a nadir spatial resolution of 1,000 meters, with approximately 2,030 pixels along track and 1,354 pixels per scan line. The product is generated by the LPCLOUD organization using a physics-based Temperature/Emissivity Separation algorithm on thermal infrared bands.
Users must apply Quality Control filtering to remove bad values, as contaminated pixels are not automatically flagged. High temperature outliers are not filtered to preserve signals from natural hot targets like fires.