MODIS/Aqua Surface Reflectance Quality Daily L2G Global 1km SIN Grid V005
Entry ID: MYD09GST5

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Summary
Abstract: The MODIS Level-2G 1km surface reflectance data state QA (quality
assurance) product (MYD09GST) is a restructured version of its primary
input, the state QA data in MYD09_L2. This product summarizes the
quality of the MYD09 products, specifically atmospheric and other
correction states. The product contains quality assurance data
pertaining to cloud and cloud shadow, land and water designations,
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Description: Near real-time (NRT) data are available from MODAPS for certain Aqua and Terra MODIS L0, L1, L2, L2G, and L3 products. Whereas the standard MODIS forward processing acquires 2-hour L0 files for Aqua and Terra from EDOS within 7-8 hours of real time, LANCE-MODIS acquires session-based L0 files from EDOS and the end of the session is available within 10-30 minutes after real time.

Description: LANCE provides access to near real-time data (<3 hours from observation) from AIRS, AMSR-E, MLS, MODIS, and OMI instruments. Users, operational agencies and researchers utilize these products for a wide range of purposes (weather forecasting to monitoring natural hazards). These users often need data much sooner than routine science processing allows and are willing to trade science quality for timely access. Science quality products (28-48hrs latency) should be used for latency independent research and applications.
Geographic Coverage
Spatial coordinates   
  N: 60.0   S: -80.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: MODAPS
Dataset Title: MODIS/Aqua Surface Reflectance Quality Daily L2G Global 1km SIN Grid V004
Dataset Publisher: NASA
Data Presentation Form: Remote Sensing Image
Online Resource: http://lance.nasa.gov/products/modis-l1-l2/
Data Resolution
Latitude Resolution: 1 km
Longitude Resolution: 1 km
Horizontal Resolution Range: 1 km - < 10 km or approximately .01 degree - < .09 degree
Quality Sensor anomalies may be present.
Access Constraints None.
Use Constraints None.
Data Set Progress
IN WORK
Originating Center
Personnel
Role: TECHNICAL CONTACT
Phone: 301-731-2917, 1-866-506-6347 (toll-free - US only)
Email: opsdist at sigmaspace.com
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].
Creation and Review Dates
DIF Creation Date: 2010-10-06
Last DIF Revision Date: 2011-05-11
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