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  • Central/Western Alaska
  • Masthead platform instrument info Terra and Aqua/MODIS
  • Masthead date range 11 October 2018

Sensing Snow Cover

The Normalized Difference Snow Index (NDSI) parameter shows the presence of snow cover over land and water and is derived from Moderate Resolution Imaging Spectroradiometer (MODIS) data. Red/orange indicates higher NDSI values; yellow indicates lower NDSI values.

Record Snow Falls in Fairbanks

On October 12 a 98-year-old snow record was broken in Fairbanks, AK - a record that not many snow-lovers appreciated. 2018 had the latest recorded snowfall at Fairbanks International Airport since 1920.


NASA's data policy ensures that all NASA data are available fully, openly, and without restrictions. Here's what this means to you.

Aurora over the Northern Hemisphere

Image captured on 6 December 2018, by the VIIRS instrument, on board the joint NASA/NOAA Suomi-NPP satellite.

Explore the NASA Booth and the Nation’s Capital at the AGU Fall Meeting, December 10-14

The NASA Booth (#1034 in the AGU Exhibit Hall) will be the center of activity for learning about the latest NASA science results and meeting the scientists, engineers, and experts behind these accomplishments.

Tracking survival among Idaho's mule deer

Satellite sensing of summer plants and winter snow helps biologists predict mule deer populations.

Learn How to Use Giovanni for Multidisciplinary Research

NASA’s GES DISC is hosting a Short Course at the AMS Annual Meeting to provide a foundation for using GES DISC's Giovanni data visualization application.

Webinar: Making SAR Data Accessible – New Sensors, Tools and Services

Event Date: November 28, 2018

Advances in sensor technology, processing capabilities, and data availability are revolutionizing the radar remote sensing discipline. Join us to learn about new sensors and how NASA’s ASF DAAC is creating new tools and services to make Synthetic Aperture Radar (SAR) data more accessible.

The EOSDIS Quarterly Update- Fall 2018 Newsletter is now online!

Find EOSDIS data set and data tool news, top stories, featured data images, webinars, data recipes, and data user profiles.

User Profile: Dr. Piyush Agram

Who uses NASA Earth science data? Dr. Piyush Agram, for developing Synthetic Aperture Radar (SAR) data products.

Webinar: Mapping Global Urbanization from Landsat Data and High-Resolution Reference Data

Event Date: November 14, 2018

Urbanization is an important driver of change across our home planet. Join us to learn about NASA SEDAC data products that provide estimates of global impervious cover and urban extent at a common 30m spatial resolution.

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