MOD_01

58 Data Products Handbook - Volume 2 • Radiance/Reflectance and Irradiance ProductsAqua / MODIS MODIS Level 1A Radiance Counts (MOD 01) Product Description This Level 1A data set contains counts for 36 MO- DIS channels, along with raw instrument engineer- ing and spacecraft ancillary data. The Level-1A data are used as input for geolocation, calibration, and processing. Quality indicators are added to the data to indicate missing or bad pixels and instrument modes. Visible, SWIR, and NIR measurements are made during daytime only, while radiances for TIR are measured during both the day and the night por- tions of the orbit. This product includes all MODIS data in digitized (counts) form for all bands, all spa- tial resolutions, all time tags (converted), all detector views (Earth, solar diffuser, spectroradiometric cali- bration assembly, black body, and space view), and all engineering and ancillary data. MODIS Level 1A Radiance Counts Summary Coverage: Global Spatial/Temporal Characteristics: 0.25, 0.5, and 1 km resolutions/ daily (daytime and nighttime) Wavelengths: 20 channels 0.4-3.0 µm, 16 channels 3-15 µm Processing Level: 1A Product Type: Standard, at-launch Maximum File Size: 534 MB File Frequency: 288/day Primary Data Format: HDF-EOS Additional Product Information: http://daac.gsfc.nasa.gov/ CAMPAIGN_DOCS/MODIS/ rad_geo_products.html DAAC: NASA Goddard Space Flight Center Science Team Contact: V.V. Salomonson