MODIS/Aqua Surface Reflectance Daily L2G Global 250m SIN Grid V006
The MYD09GQ Version 6 product provides an estimate of the surface spectral reflectance of Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) 250 meter (m) bands 1 and 2, corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Along with the 250 m bands are the Quality Assurance (QA) layer and five observation layers. This product is intended to be used in conjunction with the quality and viewing geometry information of the 500 m product (MYD09GA). Improvements/Changes from Previous Versions * Improvements to the aerosol retrieval and correction algorithm along with new aerosol retrieval look-up tables. * Refinements to the internal snow, cloud, and cloud shadow detection algorithms. Uses Bidirectional Reflectance Distribution Function (BRDF) database to better constrain the different threshold used. * Processes ocean bands to create a new Surface Reflectance Ocean product and provides Quality Assurance (QA) datasets for these bands. * Improved discrimination of salt pans from cloud and snow, along with the inclusion of a salt pan flag in the QA band.
| Science Keywords: |
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| Spatial Extent: | Bounding Rectangle: N: 90.0 S: -90.0 E: 180.0 W: -180.0 |
Data Format(s): | Archive: HDFDistribution: HDF |
| Temporal Extent: | Platform(s): | Aqua | |
| Data Center(s): | LP DAAC | Instrument(s): | MODIS |
| Version: | 006 | ||
- USER'S GUIDE: https://lpdaac.usgs.gov/documents/306/MOD09_User_Guide_V6.pdf, The technical information in the User's Guide enables users to interpret and use the data products.
- ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD): https://lpdaac.usgs.gov/documents/305/MOD09_ATBD.pdf, The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products.
- GENERAL DOCUMENTATION: https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MYD09GQ, The File Specification provides a description of the product file including Scientific Data Sets and their attributes.
Collection Information
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Purpose
Science Research -
Version Description
Collection Version 6 Processing and Reprocessing -
DOI
10.5067/MODIS/MYD09GQ.006
https://doi.org
- Search for granules from this collection
Data Identification
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Processing Level
2G
Sensor Measurements
- Quality
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Collection Progress
Active
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Access Constraints
None
Data Dates
| Creation | |
| Last Revision |
Related URLs
Other Descriptive Keywords
Additional Attributes
- Name: HORIZONTALTILENUMBER INT Description: Horizontal tile number of a grid, which increases from left to right.
- Name: QAPERCENTGOODQUALITY INT Description: Percent of pixels with good quality
- Name: QAPERCENTNOTPRODUCEDCLOUD INT Description: Percent of pixels under cloud
- Name: QAPERCENTNOTPRODUCEDOTHER INT Description: Percent of pixels not produced due to some reason other than cloud
- Name: QAPERCENTOTHERQUALITY INT Description: Percent of pixels with not so good quality
- Name: QAPERCENTPOOROUTPUT500MBAND3 INT Description: The % of pixels in 500m band 3 that have a quality of our lowest class (i.e. not usable) . A value of -1 indicates that that band was not processed.
- Name: QAPERCENTPOOROUTPUT500MBAND4 INT Description: The % of pixels in 500m band 4 that have a quality of our lowest class (i.e. not usable) . A value of -1 indicates that that band was not processed.
- Name: QAPERCENTPOOROUTPUT500MBAND5 INT Description: The % of pixels in 500m band 5 that have a quality of our lowest class (i.e. not usable) . A value of -1 indicates that that band was not processed.
- Name: QAPERCENTPOOROUTPUT500MBAND6 INT Description: The % of pixels in 500m band 6 that have a quality of our lowest class (i.e. not usable) . A value of -1 indicates that that band was not processed.
- Name: QAPERCENTPOOROUTPUT500MBAND7 INT Description: The % of pixels in 500m band 7 that have a quality of our lowest class (i.e. not usable) . A value of -1 indicates that that band was not processed.
- Name: VERTICALTILENUMBER INT Description: Vertical tile number of a grid, which increases from top to bottom.
- Name: TileID INT Description: MODIS Land tile identification number which represents a geographical area on the surface of the Earth bounded by latitude and longitude coordinates.
- Name: PROCESSVERSION STRING Description: Version of the process software that generated the product.
- Name: QAPERCENTPOOROUTPUT250MBAND1 INT Description: The % of pixels in 250m band 1 that have a quality of our lowest class (i.e. not usable). A value of -1 indicates that that band was not processed.
- Name: QAPERCENTPOOROUTPUT250MBAND2 INT Description: The % of pixels in 250m band 2 that have a quality of our lowest class (i.e. not usable). A value of -1 indicates that that band was not processed.
- Name: RESOLUTIONBANDS1AND2 STRING Description: Nadir spatial resolution (meters) of MODIS bands 1 and 2
- Name: identifier_product_doi STRING Description: Digital object identifier that uniquely identifies this data product
- Name: identifier_product_doi_authority STRING Description: URL of the digital object identifier resolving authority
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
|---|---|---|
| Aqua |
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No dates provided. |
Temporal Information
Spatial Information
Gridded Resolutions
Gridded Resolution 1
X Dimension250.0 Meters
Y Dimension250.0 Meters
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | MODIS Sinusoidal Tiling System | CARTESIAN | GEODETIC |
Resolution and Coordinate System
Horizontal Data Resolution
Tiling Identification Systems
| System Name | Coordinate 1 Min | Coordinate 1 Max | Coordinate 2 Min | Coordinate 2 Max |
|---|---|---|---|---|
| MODIS Tile SIN | 0.0 | 35.0 | 0.0 | 17.0 |
Location Keywords
- GEOGRAPHIC REGION
- GLOBAL
Data Centers
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LP DAAC
ARCHIVERLand Processes Distributed Active Archive Center
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U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
Sioux Falls, South Dakota 57198
M-F, 8 a.m. to 4 p.m. Central Time
605-594-6116
866-573-3222
Contact DetailsLP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.
The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
https://lpdaac.usgs.gov/
- Home Page
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NASA/GSFC/SED/ESD/TISL/MODAPS
PROCESSORMODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
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NASA/GSFC Code 922
GREENBELT, Maryland 20771
301-614-5515
Contact DetailsContact for data content concerns
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Data Contacts
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LP DAAC User Services
User ServicesLP DAAC User Services
LP DAAC-
U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
Sioux Falls, South Dakota 57198
M-F, 8 a.m. to 4 p.m. Central Time
605-594-6116
866-573-3222
Contact DetailsLP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.
The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
https://lpdaac.usgs.gov/
- Home Page
-
Archive And Distribution Information
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Format: HDF
Format Type: Native
Average File Size: 95.0 MB
Total Collection File Size Begin Date: 2002-07-04T00:00:00.000Z
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Format: HDF
Format Type: Native
Media: https
Average File Size: 95.0 MB
Total Collection File Size Begin Date: 2002-07-04T00:00:00.000Z