MODIS/Aqua Raw Radiances in Counts 5-Min L1A Swath - NRT

This is MODIS Level-1A Near Real Time (NRT) product containing reformatted and packaged raw instrument data. MODIS instrument data, in packetized form, is reversibly transformed to a computer data structure, along with formatted engineering and spacecraft ancillary data. The Level-1A data is separated into granules for passage to the geolocation and calibration processes. Quality indicators are added to the data to indicate missing pixels and instrument modes. This product contains MODIS digitized raw detector counts data for all 36 MODIS spectral bands, at 250 m, 500 m, or 1 km spatial resolutions including all time tags, all detector views (Earth, solar diffuser, Spectro-Radiometeric Calibration Assembly (SRCA), black body, and space view), and all engineering and ancillary data. Quality indicators are added to to the data to indicate missing or bad pixels and instrument modes. Only bands 20 to 36 are used to collect measurements in night mode, while all bands are used in day mode. Visible, SWIR, and NIR measurements are made during daytime only, while radiances for TIR are measured during both day and night portions of the orbit.

此为 MODIS（Moderate Resolution Imaging Spectroradiometer）一级A级近实时（NRT）产品，包含经过重新格式化和打包的原始仪器数据。MODIS仪器数据以分包形式呈现，可逆地转换为计算机数据结构，并附带格式化后的工程和航天辅助数据。一级A级数据被划分为数据块，以便进行地理定位和校准处理。数据中增加了质量指标，用以标识缺失像素和仪器模式。该产品包含所有36个MODIS光谱波段（250米、500米或1公里空间分辨率）的MODIS数字化原始探测器计数数据，包括所有时间标记、所有探测器视角（地球、太阳漫射器、光谱辐射计校准组件（SRCA）、黑体和太空视角），以及所有工程和辅助数据。为标识缺失或损坏的像素及仪器模式，数据中增加了质量指标。仅在夜间模式中，仅使用波段20至36进行测量，而在日间模式中则使用所有波段。可见光、短波红外和近红外测量仅在白天进行，而热红外辐射亮度则在整个轨道的白天和夜间部分均进行测量。