Short Name:

MYD09GQ

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.

Overview Download Data Services Tools Citation Information Documentation Additional Information

Science Keywords:

Spatial Extent:

Bounding Rectangle:

N: 90.0 S: -90.0 E: 180.0 W: -180.0

Data Format(s):

Archive: HDF-EOS2Distribution: HDF-EOS2

Temporal Extent:

2002-07-04 to now

Platform(s):

Aqua

Data Center(s):

LP DAAC

Instrument(s):

MODIS

Version:

006

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Title: MODIS/Aqua Surface Reflectance Daily L2G Global 250m SIN Grid V006
Version: 006
Creator: Eric Vermote, Robert Wolfe
Publisher: NASA EOSDIS Land Processes DAAC
Release Date: 2015-08-05T00:00:00.000Z
Other Citation Details: The DOI landing page provides citations in APA and Chicago styles
Linkage: https://doi.org/10.5067/MODIS/MYD09GQ.006

DOI

10.5067/MODIS/MYD09GQ.006

https://doi.org

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.

Purpose
Science Research
Version Description
Collection Version 6 Processing and Reprocessing
Search for granules from this collection

Data Dates

Creation	2010-08-31T14:11:02.980Z
Last Revision	2015-09-30T10:48:19.848Z

Processing Level

Sensor Measurements

Quality

Collection Progress
Active
Access Constraints

None

Related URLs

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

Projects

Project Short Name	Campaigns	Project Dates
Aqua	Aqua	No dates provided.

Coverage Type	Zone Identifier	Geometry	Granule Representation
HORIZONTAL	MODIS Sinusoidal Tiling System	CARTESIAN	GEODETIC

Resolution and Coordinate System

Horizontal Data Resolution

Gridded Resolutions
- Gridded Resolution 1
  X Dimension
  250.0 Meters
  Y Dimension
  250.0 Meters

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

LP DAAC
ARCHIVER

Land Processes Distributed Active Archive Center
- 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

Email
Contact Details
LP 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
NASA/GSFC/SED/ESD/TISL/MODAPS
PROCESSOR

MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
- NASA/GSFC Code 922
  GREENBELT, Maryland 20771
301-614-5515

Email
Contact Details
Contact for data content concerns
https://modaps.modaps.eosdis.nasa.gov/

Home Page

LP DAAC User Services
User Services

LP 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

Email
Contact Details
LP 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

Metadata Dates

Creation	2017-05-11T18:36:00.000Z
Last Revision	2021-06-09T16:49:00.000Z

File Archive Information

Format: HDF-EOS2

Format Type: Native

Format Description: Hierarchical Data Format - Earth Observing System Version 2

Average File Size: 95.0 MB

Total Collection File Size Begin Date: 2002-07-04T00:00:00.000Z

File Distribution Information

Format: HDF-EOS2

Format Type: Native

Format Description: Hierarchical Data Format - Earth Observing System Version 2

Media: https

Average File Size: 95.0 MB

Total Collection File Size Begin Date: 2002-07-04T00:00:00.000Z

There is no direct distribution information for this collection.

CMR Search

MODIS/Aqua Surface Reflectance Daily L2G Global 250m SIN Grid V006

Collection Information

Data Identification

Data Dates

Related URLs

Other Descriptive Keywords

Additional Attributes

Acquisition Information

Projects

Temporal Information

Spatial Information

Resolution and Coordinate System

Horizontal Data Resolution

Gridded Resolutions

Gridded Resolution 1

Tiling Identification Systems

Location Keywords

Data Centers

LP DAAC

Land Processes Distributed Active Archive Center

NASA/GSFC/SED/ESD/TISL/MODAPS

MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Data Contacts

LP DAAC User Services

LP DAAC User Services

Metadata Dates

Archive And Distribution Information

File Archive Information

File Distribution Information