eng; usa UTF8 dataset Arctic Sea Ice Charts from Danish Meteorological Institute, 1893 - 1956 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 2013-05-19 ISO 19115 Geographic Information - Metadata First Edition ISO 19115:2003 http://nsidc.org/data/g02203.html Arctic Sea Ice Charts from Danish Meteorological Institute, 1893 - 1956 2012 publication 2012-11-15 G02203 http://dx.doi.org/10.7265/N56D5QXC 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 From 1893 to 1956, the Danish Meteorological Institute (DMI) created charts of observed and inferred sea ice extent for each summer month. These charts are based on compiled observations of ice conditions reported by a variable network of national organizations, shore-based observers, scientific expeditions, and ships as detailed in each report; in cases where no observations were available, the lead mapmakers extrapolated further ice cover using their knowledge of ice movement. Except for where direct observations are indicated, caution is advised in using the charts’ ice edge because there is no way to quantify the assumptions used in extrapolating ice edge or the error involved in this method. See the note on reliability for further discussion of potential error. The charts were scanned at the Icelandic Meteorological Office (IMO) and are being made available here as a service and in cooperation with DMI and other contributors. In all, there are 266 image files containing 291 images. Scientific Research Danish Meteorological Institute and NSIDC. 2012. Arctic Sea Ice Charts from Danish Meteorological Institute, 1893 - 1956. [indicate subset used]. Compiled by V. Underhill and F. Fetterer. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N56D5QXC. complete 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 Danish Meteorological Institute none Lyngbyvej 100 DK-2100 Copenhagen E Denmark principalInvestigator 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 Ocean > Arctic Ocean place NASA / GCMD Location Keywords 2008-02-05 revision EARTH SCIENCE > Oceans > Sea Ice > Ice Extent EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration discipline NASA / GCMD Science Keywords 2008-02-05 revision theme None 2008-01-24 revision Sea Ice Sea Ice Conditions Sea Ice Extent theme otherRestrictions otherRestrictions Access Constraints : none Use Constraints : none eng; usa UTF8 climatologyMeteorologyAtmosphere -180 180 55 90 18930401 19560831 JPEG FTP 4.5 MB 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/G02203/ Data Access URL download http://nsidc.org/data/docs/noaa/g02203-dmi/ Documentation URL information onLine 4.5 B FTP