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This data set provides a Near-Real-Time (NRT) map of sea ice concentrations for both the Northern and Southern Hemispheres.
Data Set ID:
NSIDC-0081
Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1
This is the most recent version of these data.
Version Summary:
- June 2016
Starting on 1 April 2016, sea ice concentration fields are computed using F18 data. - March 2015
New smaller pole hole mask used: SSMIS Pole Hole
New spurious ice masks: NIC Valid Ice Masks - 1999
Initial release of this data product.
COMPREHENSIVE Level of Service
Data: Data integrity and usability verified; data customization services available for select data
Documentation: Key metadata and comprehensive user guide available
User Support: Assistance with data access and usage; guidance on use of data in tools and data customization services
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Geographic Coverage |
Other Access Options
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Once you have logged in, you will be able to click and download files via a Web browser. There are also options for downloading via a command line or client. For more detailed instructions, please see Options Available for Bulk Downloading Data from HTTPS with Earthdata Login. Earthdata Search: This application allows you to search, visualize, and access data across thousands of Earth science data sets. Additional customization services are available for select data sets, including subsetting, reformatting, and reprojection. |
As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.
Maslanik, J. and J. Stroeve. 1999. Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/U8C09DWVX9LM. [Date Accessed].How To
How to import the near-real-time sea ice data into ArcGIS
The following are instructions describing how to import Near-Real-Time DMSP SSM\I-SSMIS Daily Polar Gridded Sea Ice Concentrations binary files into ArcGIS. These instructions were tested with ArcMap 10.5 and 10.6.
1. Rename the Data File.
In order to be able to import a Polar Stereographic sea... read more
Subsetting and Reformatting with the NSIDC PyRS Docker Container
What is PyRS?
The NSIDC Python Reformatting and Subsetting (PyRS) tool is a user prompt command line tool for data reformatting and subsetting. PyRS is designed to work with select datasets in binary format:
Sea Ice Concentrations from Nimbus-7 SMMR... read more
Filter and order from a data set web page
Many NSIDC data set web pages provide the ability to search and filter data with spatial and temporal contstraints using a map-based interface. This article outlines how to order NSIDC DAAC data using advanced searching and filtering.
Step 1: Go to a data set web page
This article will use the... read more
FAQ
Descriptions of and Differences between the NASA Team and Bootstrap Algorithms
NSIDC currently archives passive microwave sea ice concentration products based on two algorithms: the NASA Team algorithm and the Bootstrap algorithm. Both algorithms were developed by researchers at the NASA Goddard Space Flight Center in the 1980s. Provided below are two short summaries of the... read more
