Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4
Data set id:
NSIDC-0046
DOI: 10.5067/P7O0HGJLYUQU
This is the most recent version of these data.
Version Summary

  • The projection changed to EASE-Grid 2.0, 720 x 720, at 25.000000 km

  • Sensor change over dates:

    • SMMR to SSM/I: 1987-07-03

    • SSM/I F08 to F11: 1991-12-09

    • SSM/I F11 to F13: 1995-05-08

    • SSM/I F13 to SSMIS F17: 2008-01-01



  • EASE-Grid Land Mask Source: Same as Version 3.1, regridded to EASE-Grid 2.0 (Brodzik et al. 2012).

  • Sea Ice data set used: 1978-10-23 to present: Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data.

In this section
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Overview

The main parameters for this data set are snow cover and sea ice extent; both parameters are derived from SMMR and DMSP-F8, -F11, -F13, and -F17 SSM/I and SSMIS brightness temperature data. These data are provided on the Northern Hemisphere EASE-Grid 2.0 projection and at a grid cell size of 25 x 25 km. This product is designed to provide a consistent weekly time series of snow cover from October 1966 through January 2023 and sea ice from October 1978 through January 2023.
Parameter(s):
SEA ICESNOW COVER
Platform(s):
DMSP, DMSP 5D-2/F11, DMSP 5D-2/F13, DMSP 5D-2/F8, DMSP 5D-3/F17, GOES, GOES-7, Nimbus-7
Sensor(s):
SMMR, SSM/I, SSMIS, VAS
Data Format(s):
Binary
Temporal Coverage:
3 October 1966 to 1 January 2023
23 October 1978 to 1 January 2023
Temporal Resolution:
  • 7 day
Spatial Resolution:
  • 25 km
  • 25 km
Spatial Reference System(s):
WGS 84 / NSIDC EASE-Grid 2.0 North
EPSG:6931
Spatial Coverage:
N:
90
S:
0
E:
180
W:
-180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.

Data Access & Tools

A free NASA Earthdata Login account is required to access these data. Learn More

HTTPS File System

Get Data
Quickly download a few files using a web browser, or access the data through a command-line utility such as WGET.
Programmatic Data Access Guide
Type:
service
View Metadata

EASE-Grid Data Geolocation Tools

Analyze
Geolocate and display EASE-Grid and EASE-Grid 2.0 data sets with IDL software.
Supported software languages:
IDL
Does NSIDC have tools for geolocating and displaying EASE-Grid data sets?
Type: Downloadable Software
Last updated:
View Metadata

Documentation

Help Articles

How to Articles

How do I import EASE-Grid 2.0 snow cover and sea ice data into ArcGIS?
Learn how to import  EASE-Grid 2.0 data files into ArcGIS in this step-by-step help article
Read More
Programmatic Access Guide for Data on daacdata.apps
Data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) can be accessed directly from our HTTPS file system. We provide basic command line Wget and curl instructions for HTTPS file system downloads below.
Read More