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IMS Daily Northern Hemisphere Snow and Ice Analysis at 4 km and 24 km Resolution

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Entry ID

G02156

Summary

The National Environmental Satellite, Data, and Information Service (NESDIS), part of the National Oceanic and Atmospheric Administration (NOAA), has an extensive history of monitoring snow and ice coverage. Accurate monitoring of global snow and ice cover is a key component in the study of climate and global change as well as daily weather forecasting. By inspecting environmental satellite imagery, analysts from the Satellite Analysis Branch (SAB) at the Office of Satellite Data Processing and Distribution (OSDPD), Satellite Services Division (SSD), created a Northern Hemisphere snow and ice map from November 1966 until the National Ice Center (NIC) took over production in 2008. Initially, the product was produced with a nominal spatial resolution of 190 km and a temporal resolution of seven days. In 1997, the Interactive Multisensor Snow and Ice Mapping System (IMS) became operational, giving the satellite analysts improved access to imagery and drawing tools. Since the inception of IMS, the charts have been produced daily at a nominal resolution of 24 km (1024 x 1024 grid). Beginning in February 2004, further improvements in computer speed and imagery resolution allowed for the production of a higher resolution daily product with a nominal resolution of 4 km (6144 x 6144 grid). NSIDC archives and distributes the 24-km and the 4-km IMS product in ASCII text format from February 1997 to present and February 2004 to present, respectively. NSIDC also distributes browse images in GIF format and latitude and longitude grids for these products. In June 2006, NSIDC started distributing 4-km GeoTIFF files for use with GIS applications.

Note: The IMS product is considered operational, but NIC does not guarantee availability or timely delivery of data via the NIC Web server, and NSIDC does not guarantee availability of this product via the NSIDC Web server. These servers should not be used to support operational observation, forecasting, emergency, or disaster mitigation operations, either public or private. Users with real-time operational needs should visit the NIC Web site and contact the National Ice Center Liaison to request access to the operational server.

Geographic Coverage

 

Spatial Coordinates:
N: 90°     S: 0°     E: 180°     W: -180°    

Data Set Citation

Dataset Creator: National Ice Center.
Dataset Title: IMS Daily Northern Hemisphere Snow and Ice Analysis at 4 km and 24 km Resolution
Dataset Release Date: 2008-01-01updated daily
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/g02156.html
Dataset DOI: http://dx.doi.org/10.7265/N52R3PMC

Temporal Coverage

Start Date: 1997-02-01

Data Resolution

Temporal Resolution: 1 day

Location Keywords

  • GEOGRAPHIC REGION NORTHERN HEMISPHERE

Science Keywords

  • Cryosphere Sea Ice Sea Ice Concentration
  • Cryosphere Snow/Ice Ice Extent
  • Cryosphere Snow/Ice Snow Cover
  • Oceans Sea Ice Sea Ice Concentration
  • Terrestrial Hydrosphere Snow/Ice Ice Extent
  • Terrestrial Hydrosphere Snow/Ice Snow Cover

Ancillary Keywords

  • IMS
  • Interactive Multisensor Snow and Ice Mapping System
  • NOAA
  • NOAA SSD snow products
  • Northern Hemisphere
  • Numerical Weather Prediction

ISO Topic Category (View Definitions)

  • Climatology/Meteorology/Atmosphere
  • Oceans

Platform

  • DMSP Defense Meteorological Satellite Program
  • GEOSTATIONARY SATELLITES
  • NOAA POES NOAA Polar Orbiting Environmental Satellites
  • SATELLITES

Instrument

  • AVHRR Advanced Very High Resolution Radiometer
  • GOES I-M IMAGER
  • SSM/I Special Sensor Microwave/Imager

Quality

The quality of the snow and ice cover charts will depend on the availability of clear sky imagery, the georegistration of that imagery, the quality of other input data sources, and the experience of the analyst. Regions covered by cloud during the 24-hour analysis period are generally mapped as persistence, taking lower resolution passive microwave data and surface observations into account where possible. Sub-grid scale features may not be detected.

Data Set Progress

in work

Originating Center

NOAA

Data Center

National Snow and Ice Data Center
Data Center URL: http://nsidc.org

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

National Oceanic and Atmospheric Administration
Data Center URL: http://nsidc.org/noaa/

Data Center Personnel

Name: NOAA User Services
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Distribution

Distribution Format: GIF

Distribution Media: FTP
Distribution Size: 20 - 60 KB
Distribution Format: ASCII Text (.txt)

Distribution Media: FTP
Distribution Size: 36913 KB
Distribution Format: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)

Personnel

Unknown
Role: INVESTIGATOR
Contact Address:

  • NOAA/NESDI

NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Related URL

VIEW PROJECT HOME PAGE
NOAA SSD Snow Products

VIEW PROJECT HOME PAGE
Sea Ice Products at NSIDC

VIEW RELATED INFORMATION
Environmental Working Group Joint U.S.-Russian Arctic Sea Ice Atlas

VIEW RELATED INFORMATION
Environmental Working Group Joint US-Russian Sea Ice Atlas

VIEW RELATED INFORMATION
Northern Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent Version 2

VIEW RELATED INFORMATION
Snow Data Assimilation System (SNODAS) Data Products at NSIDC

VIEW RELATED INFORMATION
Snow Data Assimilation System (SNODAS) Data Products at SNOw Data Assimilation System (SNODAS)Data Products at NSIDC

VIEW RELATED INFORMATION
Timing and Statistics of Autumn and Spring Annual Snow Cover for the Northern Hemisphere

Reference

Armstrong, R.L. and M.J. Brodzik. 2002. Northern Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent Version 2. Boulder, CO, USA: National Snow and Ice Data Center. CD-ROM.

National Operational Hydrologic Remote Sensing Center. 2004. SNODAS Data Products at NSIDC. Boulder, CO: National Snow and Ice Data Center. Digital media.

Ramsey, B. H., 1995. An Overview of NOAA/NESDIS’s Interactive Multisensor Snow and Ice Mapping System. Proceedings of 1995 First Moderate Resolution Imaging Spectrometer (MODIS) Workshop, Greenbelt, MD, National Aeronautics and Space Administration Conference Publication 3318: 23-27.

Ramsey, B. H., 1998. The Interactive Multisensor Snow and Ice Mapping System. Hydrological Processes. Vol. 12: 1537-1546.

Robinson, D.A. 2000. Weekly Northern Hemisphere snow maps: 1966-1999. 12th Conference on Applied Climatology, Asheville, NC, American Meteorological Society. 12-15.

Robinson, D.A. and A. Frei. 2000. Seasonal variability of northern hemisphere snow extent using visible satellite data. Professional Geographer 51: 307-314.

Robinson, D.A., J.D. Tarpley and B. Ramsay. 1999. Transition from NOAA weekly to daily hemispheric snow charts. Proceedings of the 10th Symposium on Global Change, Dallas, TX, American Meteorological Society. 487-490.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2008-01-01
Last DIF Revision Date: 2013-09-11

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

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