DAAC Data Subscription Requests

Subscriptions are available for MODIS, NISE, and SMAP data. Subscriptions apply only to future data as they are delivered to NSIDC; they cannot be used to receive data already in NSIDC's archive. This option is convenient if you require new data for a specific region as they are ingested into NSIDC's data archive, but you do not want to actively search and order data files each time. Based on your preference, NSIDC can either push new data to your local server via Secure Copy (SCP), or can stage data on our HTTPS site for you to pull. Subscriptions can also be bundled on a weekly basis or whatever you prefer if you do not want to receive e-mail notifications each time a data file is ingested into NSIDC's archive. Please indicate this preference in the subscription form linked at the end of this page.

This page explains the basic information NSIDC needs to process your subscription request. We encourage you to read these sections carefully before entering your information in the subscription request form, linked at the end of this page.

User Information
Subscription Preferences
SCP Requests
Product Information
Data Volumes

User Information

Please provide your name, address, organization, e-mail address, affiliation type, and category.

Subscription Preferences

Method of Data Delivery

  • HTTPS Pull: Data files are staged on NSIDC's HTTPS site for you to pull at your convenience. You have thirty days to retreive your data before files are automatically deleted.
  • Secure Copy (SCP): Data files are securely transferred to your local server using this secure shell protocol as soon as the data files are available.

Custom Message: After you establish a subscription with us, our system sends you an e-mail message whenever data are pushed to you or staged on our HTTPS server. Most of the e-mail content is information generated by the sysem, and unfortunately cannot be changed. The subject line says ECS Notification; however, you can provide us with a unique message that you want to appear in the body of the e-mail message. Refer to the USERSTRING in the example below to help you better identify the purpose of the subscription. Please provide your unique message in the Custom Message area of the subscription form.

SCP Requests

Please provide the following information if you select the SCP delivery option.

Local Host Name: Indicate the domain name or numerical IP address where the data should be sent. Example: servername.colorado.edu

Local Directory: Provide the full directory path where the data will be pushed. This directory should have write permission for a successful transfer, and should already exist before you request a subscription. Also please ensure you have adequate disk space for your anticipated subscription. Refer to Data Volumes.

Local User Name: Account name to access your host. Please call NSIDC User Services (+1 303-492-6199) to provide your user name and password. You can also send us this information by e-mail, but be aware that this method is less secure.

HTTPS Requests

Earthdata Login: If you previously ordered data from Earthdata Login and you have an Earthdata Login profile, please indicate your username. No passwords are required. If you do not have an Earthdata Login, you must create an Earthdata Login profile before continuing. Go to Register for an Earthdata Login Profile and complete the form to register.

Product Information

Data Set Title or ID: Please indicate the Data Set Title or Short Name ID. If you are unsure of these, please consult the following Data Sets Web page:

Data Set Versions: Please indicate the version number you prefer to receive. Algorithms are continually improved, as limitations become apparent in early versions of data. As a new algorithm becomes available, a new version of data is released. Users are encouraged to work with the latest version available, which is the highest version number. Refer to the following Web pages for version information.

Also specify whether you want to change to a new version as it becomes available, or continue to receive an earlier version until it is no longer available.

Geographic Coordinates: Enter the approximate geographic coordinates of your study area. Data will not be subsetted upon delivery. This information is only used to identify data files that correspond to your study area, and to trigger a subscription for those files. You will receive the full data files.

Other Special Restrictions: Please indicate other criteria for your subscription. Each MODIS, NISE, and SMAP file contains metadata that indicates the level of quality, percentage of cloud cover, percentage of missing data, and many other variables, specific to that file. For example, if you indicate you want files with less than 75 percent cloud cover, only files that meet this criteria will be included in the subscription. Experienced users may recognize some of the most commonly used quality indicators:


ScienceQualityFlag (Passed, Failed, Being Investigated, Not Investigated, Inferred Passed, Inferred Failed, Suspect, or Hold.)

These are helpful, for example, if you only want data files with the ScienceQualityFlag set to Passed. Please indicate this in the subscription request form. You can also indicate your preferred temporal coverage, but subscriptions are primarily used to send you new data as they become available.

Start and Expiration Dates of Subscription: Please indicate how long you want the subscription to last, not the temporal coverage of the data.

Subscription Request Form