Knowledge Base

How can I search and order High Mountain Asia data with spatial and temporal filtering using Earthdata Search?

Last updated: 2 January 2018

NASA Earthdata Search is a map-based search and order tool, allowing you to search for High Mountain Asia data based on spatial and temporal constraints.

Step 1: Go to Earthdata Search
Choose a dataset from https://nsidc.org/data/highmountainasia/data-summaries. On the dataset landing page, under “Get Data” select “Package” on the upper right side of the webpage and then select the Earthdata Search hyperlink in the pop up window that appears in the center of the screen.

A new tab will open and you will be presented with a view of the Earthdata Search interface. Click on the data product to open the screen below.

Step 2: Filter results by spatial or temporal constraints 

If you are interested in filtering the data by a time period or region of interest, you can use the Temporal and Spatial filter options next to the search bar at the top of the page. 

Temporal Filtering

Clicking on the Start and End boxes allow you to drill down to the beginning and end dates of interest. High Mountain Asia data temporal coverage ranges from 28 January 2002 to 24 November 2016. Temporal filtering will not apply to mosaic datasets because those date ranges use the full temporal range as a default.

Spatial Filtering

The Spatial filter includes several options for filtering, located next to the temporal filter. The rectangle option results in a map drawing tool, allowing you to draw a bounding box on the map. You can also write in the Southwest and Northeast points underneath the search box if you have specific coordinates of interest.

Step 3: Download

Click on the green "Download Data" button. You will be directed to the Earthdata Login authentication page. Enter your Earthdata Login username and password, or register for a new account if needed.

You will then land on the Data Access page, providing information on the data granules requested and data access methods.

Direct Download provides you with two options:

  1. A list of URLS to download the data matching your spatial and temporal filters. You can download the data directly in the browser, or save the URL list as a file that can be used with WGET or cURL to download from a command-line interface.
  2. A shell script you can save and use in shell terminal to download the data matching your spatial and temporal filters.

Stage for Delivery offers the ability to order the files, which will be staged to an HTTPS location for you to download, and will also include a zip file containing all of the data in your order.

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