1289c45e-d4a0-4a20-8be6-50d4539fb514 CAFF caff@caff.is 2023-02-13T14:00:12 ISO 19115:2003/19139 1.0 3 North_Pole_Stereographic (EPSG:102018) EPSG September Sea-Ice Frequency of Occurrence 2016-01-27 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. 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. Source: <a href="http://nsidc.org/data/G02172" target="_blank">NSIDC</a> Reference: National Ice Center. 2006, updated 2009. National Ice Center Arctic sea ice charts and climatologies in gridded format. Edited and compiled by F. Fetterer and C. Fowler. Boulder, Colorado USA: National Snow and Ice Data Center. Source: <a href="http://nsidc.org/data/G02172" target="_blank">NSIDC</a> US NSIDC nsidc@nsidc.org https://geo.abds.is/geonetwork/srv/api/records/1289c45e-d4a0-4a20-8be6-50d4539fb514/attachments/Figure 1.24-5 September Sea-Ice Frequency of Occurrence.jpg large_thumbnail jpg marine abiotic sea ice remote sensing eng -180 180 -90 90 WWW:LINK-1.0-http--link OGC:WMS-1.1.1-http-get-map https://geo.abds.is/geonetwork/srv/api/records/1289c45e-d4a0-4a20-8be6-50d4539fb514/attachments/Figure 1.24-5 September Sea-Ice Frequency of Occurrence.tif WWW:DOWNLOAD-1.0-http--download Figure 1.24-5 September Sea-Ice Frequency of Occurrence.tif Image https://geo.abds.is/geonetwork/srv/api/records/1289c45e-d4a0-4a20-8be6-50d4539fb514/attachments/nic_climo_1972_2007_09_occ.zip WWW:DOWNLOAD-1.0-http--download nic_climo_1972_2007_09_occ.zip Raster undefined