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MODIS/Aqua Near Real Time (NRT) Geolocation Fields 5-Min L1A Swath 1km
Entry ID: MYD03

Abstract: The Near Real Time (NRT) geolocation fields are calculated for each 1 km MODIS Instantaneous Field of Views (IFOV) for all orbits daily. The locations and ancillary information corresponds to the intersection of the centers of each IFOV from 10 detectors in an ideal 1 km band on the Earth's surface. A digital terrain model is used to model the Earth's surface. The main inputs are the spacecraft attitude and orbit, the instrument telemetry and the digital elevation model. The geolocation fields include geodetic Latitude, Longitude, surface height above geoid, solar zenith and azimuth angles, satellite zenith and azimuth angles, and a land/sea mask for each 1 km sample. Additional information is included in the header to enable the calculation of the approximate location of the center of the detectors of any of the 36 MODIS bands. This product is used as input by a large number of subsequent MODIS products, particularly the products produced by the Land team.The shortname for this product is MYD03.

Related URL
Link: View Related Information
Description: NASA LANCE Near Real Time data set descriptions and access links.

Link: View Related Information
Description: Access Collection 6 data set from the MODAPS LANCE-MODIS page(FTP server).

Link: View Related Information
Description: Direct access to the ftp site and directory hosting the MYD03 6NRT data set.

Link: View Related Information
Description: MODIS Science Team

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

Data Set Citation
Version: 6NRT

Temporal Coverage
Start Date: 2015-12-06

Data Resolution
Temporal Resolution: 5 min

Science Keywords

ISO Topic Category

AQUA >Earth Observing System, AQUA    [Information]

MODIS >Moderate-Resolution Imaging Spectroradiometer    [Information]

AQUA >Earth Observing System (EOS), AQUA    [Information]
DODS >Distributed Oceanographic Data System    [Information]
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]
OPENDAP >Open-source Project for a Network Data Access Protocol    [Information]

Overall NRT products match to operational with some expected minor differences from use of different ancillaries and ephemeris. There aren't any data gaps or data artifacts. Information on comparison of C5 Operational and NRT Atmospheric Products is posted at: Information on comparison of C6 Operational and NRT Atmospheric and Land Products is posted at: and

Use Constraints
None. See disclaimer:

Data Set Progress

Creation and Review Dates
DIF Creation Date: 2015-09-10
Last DIF Revision Date: 2016-02-09

Link to Web Site