![]() The LP DAAC distributes EMIT data processed to Level-1 or higher: Back to topĮMIT Data Processing EMIT Processing LevelsĮMIT data products will follow NASA's Earth Observing System Data and Information System (EOSDIS) data processing levels. The elevation dataset is estimated at pixel center and sourced from the Shuttle Radar Topography Mission (SRTM v3), which is then resampled to EMIT’s native 60 m spatial resolution. The latitude and longitude coordinates are given in ESPG:4326 (World Geodetic System-84) and the longitude values are Easting (increasing eastward from Greenwich). The location data provided are latitude, longitude, and elevation. EMIT Coordinate Reference SystemĮMIT data products contain location information in spatially raw format (non-orthocorrected). L4 EMIT products are produced using a 2° latitude by 2.5° longitude horizontal model grid. 元 EMIT products are produced at 0.5° x 0.5° resolution. L1 and L2 EMIT products are produced at 60 m spatial resolution. The true revisit period for a given location is variable based on the instrument’s orbital cycle aboard the ISS. ![]() At-Sensor Calibrated Radiance and Geolocation Data – Geophysical ParameterĮMIT Temporal and Spatial Resolution EMIT Temporal ResolutionĪll EMIT products distributed from the LP DAAC are produced at nominally daily temporal resolution.The EMIT L1B At-Sensor Calibrated Radiance and Geolocation Data 60 m V001 collection has the following characteristics: The EMIT Product Long Name (i.e., Collection-Level) naming convention provides useful information regarding all EMIT swath products.īelow is an example for an EMIT Level 1B product, although all EMIT Product Long Names follow the same structure. The PNG file name will match the main product of the collection but will have PNG as the data format. 000120 – Unique global plume complex identifierįor level 3 and 4 data products, filenames will follow the naming convention: EMIT_元_ASA_001Įach EMIT product may contain multiple NetCDF files and one quick look PNG file.Level 2B Estimated Methane Plume Complexes cloud optimized GeoTIFF filenames adhere to the following naming convention: EMIT_L2B_CH4PLM_001_20220101T083015_000120 2200105 – Orbit identification number (YYDOYNN), where NN is a two-digit incrementing orbit number for each day.T083015 – Time of Acquisition (HHMMSS) (in UTC).20220101 – Date of Acquisition (YYYYMMDD).Level 1 and 2 data product filenames will adhere to the following naming convention: EMIT_L1B_RAD_001_20220101T083015_2200105_007 Back to topĮMIT filenames (i.e., the local granule ID) follow a naming convention which gives useful information regarding the specific product. Maps of the relative abundance of source minerals that are generated from EMIT data will advance our understanding of the current and future impacts of mineral dust in the Earth system. EMIT has a viewing swath width of 75 km, measuring 285 bands at a spatial resolution of 60 m. The EMIT instrument is an imaging spectrometer that uses contiguous spectroscopic measurements in the visible to shortwave infrared region of the spectrum to resolve absorption features of dust-forming minerals. Up to five visits (three on average) of each arid target region are scheduled, only downlinking acquisitions that are not dominated by cloud cover. EMIT is installed on the International Space Station (ISS) and uses imaging spectroscopy to take mineralogical measurements of sunlit regions of interest between 52° N latitude and 52° S latitude. The measurements will then be used as input data for the composition of dust sources in Earth System Models (ESM). ![]() The Earth Surface Mineral Dust Source Investigation (EMIT) instrument measures surface mineralogy, targeting the Earth’s arid dust source regions. ![]()
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