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MODIS/Terra Near Real Time (NRT) Sea Ice Extent 5-Min L2 Swath 1km (C005)
Entry ID: MOD29


Summary
Abstract: MODIS/Terra Near Real Time (NRT) Sea Ice Extent 5-Min L2 Swath 1km (MOD29) contains the following fields: sea ice by reflectance, sea ice by reflectance pixel quality assurance (QA), ice surface temperature (IST), IST pixel QA, sea ice by IST, combined sea ice, latitudes, and longitudes in HDF-EOS format, along with corresponding metadata. Latitude and longitude geolocation fields are at 5 km resolution, while all other fields are at 1 km resolution. Version 4 (V004) is the latest version of MOD29 data available. MODIS/Terra V004 data extend from 24 February 2000 to present. The sea ice algorithm uses a Normalized Difference Snow Index (NDSI) modified for sea ice to distinguish sea ice from open ocean, based on reflective and thermal characteristics. The only data available for Version 4 (V004) is the Golden Month, which is a sample of V004 data covering the time period 29 August 2002 (day of year 241) through 7 October 2002 (day of year 280). The Golden Month is only available by special request by contacting NSIDC User Services. Please note that NSIDC now has a complete series of Version 5 data, which is the highest version number now available and represents the best quality of data.

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 5 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 MOD29 5NRT 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: 5NRT


Temporal Coverage
Start Date: 2015-12-27


Data Resolution
Temporal Resolution: 5 minutes


Science Keywords
CRYOSPHERE >SEA ICE >ICE EXTENT    [Definition]
CRYOSPHERE >SEA ICE >ICE TEMPERATURE    [Definition]
OCEANS >SEA ICE >ICE EXTENT    [Definition]
OCEANS >SEA ICE >ICE TEMPERATURE    [Definition]


ISO Topic Category
OCEANS


Platform
TERRA >Earth Observing System, TERRA (AM-1)    [Information]


Instrument
MODIS >Moderate-Resolution Imaging Spectroradiometer    [Information]


Project
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]


Quality
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: http://lance.modaps.eosdis.nasa.gov/data_products/comparison.html. Information on comparison of C6 Operational and NRT Atmospheric and Land Products is posted at: http://lance3.modaps.eosdis.nasa.gov/data_products/comparison_atmos... and http://lance3.modaps.eosdis.nasa.gov/data_products/comparison_land.....


Use Constraints
None. See disclaimer: https://earthdata.nasa.gov/data/near-real-time-data/about-lance/dis....


Data Set Progress
COMPLETE



Creation and Review Dates
DIF Creation Date: 2009-06-20
Last DIF Revision Date: 2016-02-09



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