Filter and order from a data set web page using the Data Access Tool
Many NSIDC DAAC data sets can be accessed using the NSIDC DAAC's Data Access Tool. This tool provides the ability to search and filter data with spatial and temporal constraints using a map-based interface.
Users have the option to
- Download a Python script
- Place an order to download files
- Pass their selection through to Earthdata Search to further customize and order there
Let's get started with how to use the NSIDC DAAC Data Access Tool.
Step 1: Go to a dataset landing page
Any data set that is compatible with the Data Access Tool will have it listed as an option under the Data Access & Tools section of the data set landing page. This article will use the MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps data set as an example, but all data sets will have a similar workflow.
Start by going to the data set landing page: https://nsidc.org/data/nsidc-0481.
Step 2: Select the Data Access Tool
On the data set landing page, choose the menu button for Data Access & Tools.
The menu button link will take you down the page to the download options section.
In the Data Access Tool Card, click the title: Data Access Tool. This will load the Data Access Tool populated with the data product you have selected.
Step 3: Filter results by spatial and temporal constraints and/or text wildcards
Spatial and temporal filters can help limit data to a region of interest or time period. Spatial filtering can be applied by drawing a bounding box or polygon or entering latitude and longitude bounding box coordinates. A shapefile or GeoJSON file can also be imported. A temporal filter can be applied by entering a start and end date. Use the reset or trash icons to delete any filters.
The use of wildcards can also be applied to search and filter by file names. For example:
- Use * (asterisk) to match any number of characters in the file name (e.g. *W69.10N or *W69*18Sep)
- Use ? (question mark) to match any one character (e.g. ?W)
Step 4: Login to your NASA Earthdata account
Click the Login to Earthdata button above the list of file names and enter your credentials. Access to any NASA data requires a NASA Earthdata user account. You can also use the link to register as a user if you don't have an account yet.
Step 5: Download files or customize further
Below the list of file names, select the download option that best fits your needs. Options include a python script, receiving a list of download links (<2000 files), or ordering through NASA Earthdata Search (for orders >2000 files). This last option will also provide you more options to further customize your selection.
Last updated: August 2022