[Parameters: Topic='SPECTRAL/ENGINEERING', Term='SENSOR CHARACTERISTICS', Variable_Level_1='VIEWING GEOMETRY']
MODIS/Terra Near Real Time (NRT) Geolocation Angles Daily L2G Global 1km SIN Grid Day V005Entry ID: MODMGGAD_C5_NRT
Abstract: The MODIS Near Real Time (NRT) Global Geolocation Angle (MODGGA) files contain information on solar illumination and instrument viewing geometry angles. These data can be used to model the geometric relationship and distance between the area of the Earth's surface imaged, the sun, and the sensor. This is often required to perform atmospheric corrections, ... or to convert or calibrate spectral data to known (absolute) radiance or reflectance units. MODMGGA files are used as input to higher-level products such as MODIS Surface Reflectance (MOD09). Geometric information for each sensor observation is stored on a geolocated grid with Level-2 geophysical parameters stored as Level-2G (gridded) products. The multiple observations stored in the L2G grids are examined by the Level-3 processes to extract only the most relevant observations per grid cell. Data Set Characteristics: Area: ~10 degrees x 10 degrees lat/long Image Dimensions: 1200 x 1200 rows/columns File Size: ~44 MB Resolution: 1 kilometer Projection: Sinusoidal Processing Level: 2G Data Format: HDF-EOS Science Data Sets (SDS HDF Layers): 7 Version-4 MODIS/Terra data are validated products. NOTE: These products are validated, meaning that product uncertainties are well defined over a range of representative conditions. Although there may be later improved versions, these data are ready for use in scientific publications still experimental in nature upon their initial release. Investigations are underway to assess the scientific validity of these products.
(Click for Interactive Map)
Data Set Citation
Start Date: 2015-12-10Stop Date: 2015-12-17
ISO Topic Category
Quality Sensor anomalies may be present.
Use Constraints None
Data Set Progress
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date: 2011-05-03
Last DIF Revision Date: 2016-01-27