eng; usa UTF8 dataset National Ice Center Arctic Sea Ice Charts and Climatologies in Gridded Format 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 2013-06-19 ISO 19115 Geographic Information - Metadata First Edition ISO 19115:2003 http://nsidc.org/data/g02172.html National Ice Center Arctic Sea Ice Charts and Climatologies in Gridded Format 2006 publication 2006-01-01 G02172 http://dx.doi.org/10.7265/N5X34VDB 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 U.S. National Ice Center (NIC) is an inter-agency sea ice analysis and forecasting center comprised of the Department of Commerce/NOAA, the Department of Defense/U.S. Navy, and the Department of Homeland Security/U.S. Coast Guard components. Since 1972, NIC has produced Arctic and Antarctic sea ice charts. This data set is comprised of Arctic sea ice concentration climatology derived from the NIC weekly or biweekly operational ice-chart time series. The charts used in the climatology are from 1972 through 2007; and the monthly climatology products are median, maximum, minimum, first quartile, and third quartile concentrations, as well as frequency of occurrence of ice at any concentration for the entire period of record as well as for 10-year and 5-year periods. These climatologies and the charts from which they are derived are provided in the 25-km Equal-Area Scalable Earth Grid (EASE-Grid) binary (.bin) format. The climatologies are also available in ArcGIS geodatabases (.mdb), and GIF format browse files (.gif) are also provided. NIC charts are produced through the analyses of available in situ, remote sensing, and model data sources. They are generated primarily for mission planning and safety of navigation. NIC charts generally show more ice than do passive microwave derived sea ice concentrations, particularly in the summer when passive microwave algorithms tend to underestimate ice concentration. The record of sea ice concentration from the NIC series is believed to be more accurate than that from passive microwave sensors, especially from the mid-1990s on (see references at the end of this documentation), but it lacks the consistency of some passive microwave time series. Scientific Research National Ice Center. 2006, updated 2009. National Ice Center Arctic Sea Ice Charts and Climatologies in Gridded Format. [indicate subset used]. Compiled by F. Fetterer and C. Fowler. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5X34VDB. underDevelopment Suitland, Maryland Usa National Ice Center none Suitland MD USA principalInvestigator Florence Fetterer National Snow and Ice Data Center none Boulder CO USA principalInvestigator Charles Fowler University of Colorado at Boulder none Boulder CO USA 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 Geographic Region > Arctic Ocean > Arctic Ocean place NASA / GCMD Location Keywords 2008-02-05 revision EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration discipline NASA / GCMD Science Keywords 2008-02-05 revision theme None 2008-01-24 revision Arctic Sea Ice Sea Ice Sea Ice Concentration Sea Ice Stage Of Development Sea Ice Variability theme otherRestrictions otherRestrictions Access Constraints : none Use Constraints : none eng; usa UTF8 environment oceans -180 180 45 90 19720101 20071231 Binary FTP 1.32 GB 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/pub/DATASETS/NOAA/G02172/ Data Access URL download http://nsidc.org/data/docs/noaa/g02172_nic_charts_climo_grid/index.html Documentation URL information onLine 1.32 B FTP AVHRR > Advanced Very High Resolution Radiometer sensor OLS > Operational Linescan System sensor SAR > Synthetic Aperture Radar sensor SCATTEROMETERS sensor SMMR > Scanning Multichannel Microwave Radiometer sensor SSM/I > Special Sensor Microwave/Imager sensor VISUAL OBSERVATIONS sensor AIRCRAFT satellite N/A DMSP > Defense Meteorological Satellite Program satellite N/A MODELS satellite N/A NIMBUS-7 satellite N/A NOAA POES > NOAA Polar Orbiting Environmental Satellites satellite N/A SATELLITES satellite N/A SHIPS satellite N/A