National Ice Center Arctic Sea Ice Charts and Climatologies in Gridded Format

Metadata Updated: November 13, 2020

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.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date August 13, 2015
Metadata Created Date November 12, 2020
Metadata Updated Date November 13, 2020
Reference Date(s) January 1, 2006 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NSIDC

Additional Metadata

Resource Type Dataset
Metadata Date August 13, 2015
Metadata Created Date November 12, 2020
Metadata Updated Date November 13, 2020
Reference Date(s) January 1, 2006 (publication)
Responsible Party (Principal Investigator); University of Colorado at Boulder (Principal Investigator); National Snow and Ice Data Center (Principal Investigator, Point of Contact)
Contact Email
Guid noaa.ncei.nsidc.G02172
Access Constraints Access Constraints : none, Use Constraints : none
Bbox East Long 180
Bbox North Lat 90
Bbox South Lat 45
Bbox West Long -180
Coupled Resource
Frequency Of Update asNeeded
Licence
Metadata Language eng; usa
Metadata Type geospatial
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 19720101
Temporal Extent End 20071231

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