Sea Ice Concentration NSIDC Climate Data Record V4, Arctic

Summary

This is 25-km science quality sea ice concentration data for the Arctic from the NOAA/NSIDC Climate Data Record, Version 4 (G02202). This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. Daily and monthly versions are available from 1978 to the most recent annual processing.

Time Period

Oct 1978 to Jun 2024

Spatial Coverage

Arctic

Spatial Resolution

25 km

Projection

Polar stereographic

Composites

Daily Monthly

Data Provider

NOAA/NSIDC

Parameters

Daily

cdr seaice conc, stdev of cdr seaice conc, melt onset day cdr seaice conc, qa of cdr seaice conc, nsidc nt seaice conc, nsidc bt seaice conc

Monthly

cdr seaice conc monthly, stdev of cdr seaice conc monthly, melt onset day cdr seaice conc monthly, qa of cdr seaice conc monthly, nsidc nt seaice conc monthly, nsidc bt seaice conc monthly

Map Settings

Data Access

ERDDAP

ERDDAP is a data server that gives you a simple, consistent way to download data in the format and the spatial and temporal coverage that you want. Use the following links to access the data in ERDDAP.

Composite	Dataset Name	ERDDAP ID
Daily	Sea Ice Concentration, NOAA/NSIDC Climate Data Record V4, Northern Hemisphere, 25km, Science Quality, 1978-Present, Daily	nsidcG02202v4nh1day
Monthly	Sea Ice Concentration, NOAA/NSIDC Climate Data Record V4, Northern Hemisphere, 25km, Science Quality, 1978-Present, Monthly	nsidcG02202v4nhmday

These Data are in Projected Coordinates

This dataset is provided by NOAA/NSIDC in a Polar Stereographic projection. Check out these tips on accessing projected data from our servers.

Working with Lat-Lon Grids

View an R code example of how to access projected data from ERDDAP using the latitude-longitude grids. View Example

NetCDF File Users

For CF compliant projected files, use a link from the ERDDAP dataset list and then choose 'files' access instead of the ERDDAP download form.

Data Access Examples

View demonstrations of working with the ERDDAP interface and working with R scripts and the ERDDAP API
https://polarwatch.noaa.gov/tools-training/code-gallery

The following details are from the dataset metadata. View dataset details in ERDDAP

ERDDAP Dataset Title

Sea Ice Concentration, NOAA/NSIDC Climate Data Record V4, Northern Hemisphere, 25km, Science Quality, 1978-Present, Daily

ERDDAP Dataset ID

nsidcG02202v4nh1day

Data Provider

NOAA/NSIDC

More information about this product

https://nsidc.org/

Data Provider Web Page

https://nsidc.org/

Dataset Description

This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC). This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap processed concentrations for reference Variables containing standard deviation, quality flags, and projection information are also included. Data are available from NSIDC via FTP see https://nsidc.org/data/G02202/versions/4/. Data are also distributed via the PolarWatch ERDDAP at https://polarwatch.noaa.gov/erddap. Note that the data format available through PolarWatch is different from the NSIDC FTP NetCDF files. The PolarWatch data server stores projection information as global attributes (with the prefix grid_mapping) instead of as a variable; and the timestamp is served in different units (seconds since 1970).

Time Period

Oct 25, 1978 to Jun 30, 2024

Spatial Coverage

Arctic

Parameters

cdr seaice conc, stdev of cdr seaice conc, melt onset day cdr seaice conc, qa of cdr seaice conc, nsidc nt seaice conc, nsidc bt seaice conc

Composites

Daily Monthly

Data Formats

Data are available in a number of formats including NetCDF, csv, graphics and more.

Metadata

View in ERDDAP

Projection

Polar Stereographic, EPSG:3411

The following details are from the dataset metadata. View dataset details in ERDDAP

ERDDAP Dataset Title

Sea Ice Concentration, NOAA/NSIDC Climate Data Record V4, Northern Hemisphere, 25km, Science Quality, 1978-Present, Monthly

ERDDAP Dataset ID

nsidcG02202v4nhmday

Data Provider

NOAA/NSIDC

More information about this product

https://nsidc.org/data/g02202/versions/4/

Data Provider Web Page

https://nsidc.org/

Dataset Description

This data set provides a passive microwave sea ice concentration climate data record (CDR) based on gridded brightness temperatures (TBs) from the Defense Meteorological Satellite Program (DMSP) series of passive microwave radiometers: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager/Sounder (SSMIS). The sea ice concentration CDR is an estimate of sea ice concentration that is produced by combining concentration estimates from two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm and the Bootstrap algorithm. The individual algorithms are used to process and combine brightness temperature data at National Snow and Ice Data Center (NSIDC). This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) from November 1978 to the present which spans the coverage of several passive microwave instruments. The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells, and are available in Network Common Data Format (NetCDF) file format. Each file contains a variable with the CDR concentration values as well as variables that hold the NASA Team and Bootstrap concentrations for reference. Variables containing standard deviation, quality flags, and projection information are also included. Data are available from NSIDC via FTP see https://nsidc.org/data/G02202/versions/4/. Data are also distributed via the PolarWatch ERDDAP at https://polarwatch.noaa.gov/erddap. Note that the data format available through PolarWatch is different from the NSIDC FTP NetCDF files. The PolarWatch data server stores projection information as global attributes (with the prefix grid_mapping) instead of as a variable; and the timestamp is served in different units (seconds since 1970).

Time Period

Nov 01, 1978 to Jun 01, 2024

Spatial Coverage

Arctic

Parameters

cdr seaice conc monthly, stdev of cdr seaice conc monthly, melt onset day cdr seaice conc monthly, qa of cdr seaice conc monthly, nsidc nt seaice conc monthly, nsidc bt seaice conc monthly

Composites

Daily Monthly

Data Formats

Data are available in a number of formats including NetCDF, csv, graphics and more.

Metadata

View in ERDDAP

Projection

Polar Stereographic, EPSG:3411