Science Keywords>SPECTRAL/ENGINEERING>SENSOR CHARACTERISTICS
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MODIS/Aqua Geolocation Angles Daily L2G Global 1km SIN Grid Day V005 Entry ID: MYDMGGAD |
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Summary
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Abstract:
The MODIS Global Geolocation Angle files (MYDMGGAD) 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. MYDMGGAD files are used as input to higher level products such as MODIS Surface Reflectance (MYD09). 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 latitude/longitude Size: 1200 X 1200 rows/columns File Size: ~29 MB Resolution: 1 kilometer Projection: Sinusoidal Processing Level: 2G Data Format: HDF-EOS Science Data Sets (SDS HDF Layers): 7 |
Related URL
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Link:
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LANCE
Description: NASA LANCE Near Real Time Data Products |
Geographic Coverage
| N: 60.0 | S: -80.0 | E: 180.0 | W: -180.0 |
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Data Set Citation
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Dataset Originator/Creator:
MODAPS
Dataset Title: MODIS/Aqua Geolocation Angles Daily L2G Global 1km SIN Grid Day V004 Online Resource: http://lance.nasa.gov/data-products/modis-products/ |
Temporal Coverage
| Start Date: 2011-02-16 |
Location Keywords
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GEOGRAPHIC REGION
> GLOBAL LAND
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Data Resolution
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Latitude Resolution:
1 km
Longitude Resolution: 1 km |
Science Keywords
| SPECTRAL/ENGINEERING >SENSOR CHARACTERISTICS >VIEWING GEOMETRY [Definition] |
ISO Topic Category
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GEOSCIENTIFIC INFORMATION
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Platform
| AQUA >Earth Observing System, AQUA [Information] |
Instrument
| MODIS >Moderate-Resolution Imaging Spectroradiometer [Information] |
Project
| EOSDIS >Earth Observing System Data Information System [Information] |
| ESIP >Earth Science Information Partners Program [Information] |
| AQUA >Earth Observing System (EOS), AQUA [Information] |
Quality
| Sensor anomalies may be present. |
Access Constraints
| None. |
Use Constraints
| None. |
Keywords
| EOSDIS |
| ESIP |
| LANCE |
Data Set Progress
| COMPLETE |
Originating Center
| EROS |
Data Center
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MODIS Adaptive Processing System, Biospheric Information Systems Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
[Information]
Data Center URL: http://modaps.nascom.nasa.gov Dataset ID: MYDMGGAD
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Publications/References
National Aeronautics and Space Administration, 2000, MODIS data
products catalog (EOS AM platform): [Greenbelt, Maryland], Goddard
Space Flight Center, http://modis.gsfc.nasa.gov.
National Aeronautics and Space Administration, 1999, 1999 EOS
reference handbook, a guide to NASA's Earth Science Enterprise and the
Earth Observing System: Greenbelt, Maryland, Goddard Space Flight
Center, 361 p. [available online in pdf format at
http://eospso.gsfc.nasa.gov].
products catalog (EOS AM platform): [Greenbelt, Maryland], Goddard
Space Flight Center, http://modis.gsfc.nasa.gov.
National Aeronautics and Space Administration, 1999, 1999 EOS
reference handbook, a guide to NASA's Earth Science Enterprise and the
Earth Observing System: Greenbelt, Maryland, Goddard Space Flight
Center, 361 p. [available online in pdf format at
http://eospso.gsfc.nasa.gov].
Creation and Review Dates
DIF Creation Date:
2011-05-10
Last DIF Revision Date:
2011-05-11
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