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This data set contains daily and weekly sea ice motion vectors, as well as browse images representing the weekly data. Input data sources, derived from AVHRR, AMSRE, SMMR, SSMI, and SSMI/S sensors; IABP buoys; and NCEP/NCAR Reanalysis forecasts, used to generate the daily and weekly sea ice motion estimates are also included. For more recent data, see the Quicklook Arctic Weekly EASE-Grid Sea Ice Motion Vectors data set (https://nsidc.org/data/nsidc-0748).
Data Set ID:
NSIDC-0116
Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors, Version 4
This is the most recent version of these data.
Version Summary:
Changes to this version include:
Data are provided in georeferenced netCDF format rather than ASCII and raw binary files
Merge 15 highest-weighted rather than 15 closest input vectors
Improved filtering of SSMI inputs
Each buoy provides one daily motion estimate instead of separate noon and midnight estimates
Monthly ice motion estimates are no longer provided
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 |
- If you are not currently logged in to Earthdata, you will be prompted to do so.
- You may register for an Earthdata Login if you do not have an account.
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.
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.
Tschudi, M., W. N. Meier, J. S. Stewart, C. Fowler, and J. Maslanik. 2019. Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors, Version 4. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/INAWUWO7QH7B. [Date Accessed].How To
How to import Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors into ArcGIS
This article describes the actions to perform in order work with NSIDC-0116 in ArcGIS. At the time of writing, this tutorial is relevant for ArcMap10.5 and earlier. The following steps will show you how to prepare the binary files for import, format conversion, geolocation/projection, and display... read more
How to convert the horizontal and vertical components to east and north
This article describes how to convert the u (horizontal) and v (vertical) components from the ice motion data set to East and North components on the Earth's surface. Instructions for both the Northern and Southern Hemispheres are described below:
Northern Hemisphere
The latitudes and longitudes... 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. For questions about programmatic access to NSIDC... read more
