eng; usa UTF8 dataset Sea Ice Index NSIDC User Services National Snow and Ice Data Center none 1 303 492-6199 x CIRES, 449 UCB Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org pointOfContact 2013-05-24 ISO 19115 Geographic Information - Metadata First Edition ISO 19115:2003 http://nsidc.org/data/g02135.html Sea Ice Index 2002 publication 2002-12-05 G02135 http://dx.doi.org/10.7265/N5QJ7F7W NSIDC User Services National Snow and Ice Data Center none 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org custodian NSIDC NOAA User Services NSIDC National Oceanic and Atmospheric Administration none 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org/noaa/ custodian The Sea Ice Index provides a quick look at sea ice changes in spatial and historical context, and gives a consistent, up-to-date source of sea ice extent and sea ice concentration values and images. The NSIDC Near-Real-Time DMSP SSM/I Daily Polar Gridded Sea Ice Concentrations and the Sea Ice Concentrations from Nimbus-7 SSMR and DMSP SSM/I Passive Microwave Data data sets are used to generate the monthly records of sea ice extent and sea ice concentration for the Arctic and Antarctica from satellite passive microwave data. Data files tabulate monthly mean extent and area, in millions of square kilometers, by year for a given month. Plots of monthly sea ice extent anomalies with trend lines and significance intervals are available. Monthly images show sea ice extent (with an outline of the median extent for that month for comparison), sea ice concentration, trends in sea ice concentration, and anomalies in sea ice concentration. Anomalies and median extent are calculated using a reference period of 1979 through 2000. Daily images of sea ice extent and concentration, along with a time series plot of extent for the most recent four months, can be viewed and downloaded on the data product site but are not archived. Some products are available as GIS compatible shapefiles and KML files. The Browse Image Spreadsheet Tool (BIST) can be used for animated images and for displaying archived images of extent and trends side by side, to make it easy to compare images from different years and months. Data are stored in ASCII text, Portable Network Graphics (PNG), Keyhole Markup Language (KML), and Geospatial Vector Data format and are available from November 1978 to present via FTP or the Sea Ice Index Web site. Scientific Research Fetterer, F., K. Knowles, W. Meier, and M. Savoie. 2002, updated 2009. Sea Ice Index. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5QJ7F7W. underDevelopment F. Fetterer CIRES none 449 UCB Boulder CO 80309 USA fetterer@nsidc.org principalInvestigator Kenneth Knowles National Snow and Ice Data Center none National Snow and Ice Data Center Boulder CO 80309-0449 USA principalInvestigator Walt Meier CIRES none 449 UCB Boulder CO 80309 USA walt@nsidc.org principalInvestigator Matthew Savoie National Snow and Ice Data Center none CIRES, 449 UCB Boulder CO 80309-0449 USA savoie@nsidc.org principalInvestigator NSIDC User Services National Snow and Ice Data Center none 1 303 492-6199 x CIRES, 449 UCB Boulder CO 80309-0449 USA nsidc@nsidc.org pointOfContact asNeeded dataset series attribute NSIDC User Services National Snow and Ice Data Center none 1 303 492-6199 x CIRES, 449 UCB Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org pointOfContact Continent > Antarctica Geographic Region > Arctic place NASA / GCMD Location Keywords 2008-02-05 revision EARTH SCIENCE > Cryosphere > Sea Ice > Ice Extent EARTH SCIENCE > Cryosphere > Sea Ice > Ice Growth/Melt EARTH SCIENCE > Cryosphere > Sea Ice > Reflectance EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration EARTH SCIENCE > Oceans > Sea Ice > Ice Extent EARTH SCIENCE > Oceans > Sea Ice > Ice Growth/Melt EARTH SCIENCE > Oceans > Sea Ice > Reflectance EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration discipline NASA / GCMD Science Keywords 2008-02-05 revision theme None 2008-01-24 revision NOAA Sea Ice Sea Ice Anomalies Sea Ice Conditions Sea Ice Trends theme otherRestrictions otherRestrictions Access Constraints : none Use Constraints : none eng; usa UTF8 climatologyMeteorologyAtmosphere oceans -180 180 -90 90 19790101 Unknown ASCII Text FTP ESRI Shapefiles FTP PNG FTP NSIDC User Services National Snow and Ice Data Center 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org custodian NSIDC NOAA User Services NSIDC National Oceanic and Atmospheric Administration 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org/noaa/ custodian ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/ Data Access URL download http://nsidc.org/data/docs/noaa/g02135_seaice_index/index.html Documentation URL information http://nsidc.org/data/seaice_index/ Product Site URL information onLine FTP SMMR > Scanning Multichannel Microwave Radiometer sensor SSM/I > Special Sensor Microwave/Imager sensor DMSP > Defense Meteorological Satellite Program satellite N/A NIMBUS-7 satellite N/A SATELLITES satellite N/A