Sea Ice Concentration from GCOM-W1 AMSR-2, NRT, Arctic

Summary

This is 10km AMSR-2 sea ice concentration for the Arctic from the GCOM-W1 satellite. NRT daily data are available from 2021.

Time Period

Apr 2021 to Apr 2026

Spatial Coverage

Arctic

Spatial Resolution

9.9375 km

Projection

Polar stereographic

Composites

Daily

Data Provider

NOAA CoastWatch

Parameters

IceConc

Map Settings

Variable

Map View

Time

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.

Dataset Name	ERDDAP ID
Ice Concentration, Daily, GCOM-W1 AMSR2, Arctic, 10km, NRT, Past 3 Weeks	noaacwAMSR2gw1IceConcDailyNP06

These Data are in Projected Coordinates

This dataset is provided by NOAA CoastWatch 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

Full Details

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

ERDDAP Dataset Title

Ice Concentration, Daily, GCOM-W1 AMSR2, Arctic, 10km, NRT, Past 3 Weeks

ERDDAP Dataset ID

noaacwAMSR2gw1IceConcDailyNP06

Data Provider

NOAA CoastWatch

More information about this product

https://coastwatch.noaa.gov/cw/satellite-data-products/sea-ice.html

Data Provider Web Page

http://www.star.nesdis.noaa.gov

Dataset Description

This dataset is a level 3, daily, 10km, polar stereographic mapped composite of sea ice concentration using data from the GCOM-1 satellite AMSR-2 microwave sensor. These L3 composites are generated from level 2 data provided by NOAA OSPO; NOGAPS algorithm developed by NOAA STAR (Paul Chang, Lead). NOAA CoastWatch obtains L2 from OSPO and generates a L3 daily merged (composite) and maps to polar stereographic projection for routine distribution. The OSPO/STAR L2 product uses the GCOM-W1 AMSR-2 Algorithm Software Processor (GAASP) which takes the full orbital JAXA L1B data via NASA, applies brightness temperature bias corrections, assigns an RFI flag, performs internal reformatting, and then generates L2 products from the NOAA Operational GCOM-W1 AMSR-2 Products System Algorithm (NOGAPS). Platform/Sensor Details: The second Advanced Microwave Scanning Radiometer 2 (AMSR-2) on JAXA's Global Climate Observation Mission - Water 1 (GCOM-W1). Temporal coverage: Daily composites and 4-day rolling merge composites are produced daily with a latency of 12-24 hours. The composites have a 10 km spatial resolution and are mapped to Polar Stereographic projections for North Pole. The AMSR-2 Microwave sensor is not impacted by clouds and serves as a full coverage dataset that supplements the NOAA VIIRS infra-red 750m data. This L3 dataset is originally served on the STAR THREDDS server, PolarWatch connects to the dataset via the STAR ERDDAP server. For more information on the dataset and access servers visit: https://coastwatch.noaa.gov/cw/satellite-data-products/sea-ice.html.

Time Period

Apr 20, 2021 to Apr 16, 2026

Spatial Coverage

Arctic

Parameters

IceConc

Composites

Daily

Data Formats

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

Metadata

View in ERDDAP

Projection

Polar Stereographic, EPSG:3413