Service Interruption

The NSIDC Web site and data services are currently having intermittent problems and may be unavailable. We are working to restore these services as soon as possible and apologize for any inconvenience this may cause. Please contact NSIDC User Services for assistance.

NASA Distributed Active Archive Center (DAAC) at NSIDC

Supporting scientific study of the cryosphere

See Also


This product Home page contains tools for ordering and working with the data, information regarding the availability of data products, how to obtain guide documentation, FAQs, and other related MODIS information.

Related Resources

MODIS Instrument Science Team

NASA's Web site provides comprehensive information on the MODIS instruments, including news, mission and data descriptions, images, science team publications, and other related information.

MODIS Instrument Science Team Snow and Ice Global Mapping Project

This MODIS Web site describes the snow and ice product suite and related algorithms, in addition to providing direct broadcast data, MODIS user guides, maps, and other related information.

MODIS Global Browse Images for Snow and Ice Products

This MODIS Web interface provides global browse images with fixed contrast stretching and color look-up tables to enable consistent temporal comparison at 5 km resolution.

NASA's Earth Observing System

The EOS Home page provides mission profiles, data services, additional EOS links, and an online EOS directory database.

DAAC Data Projects: Visible/Infrared


Moderate Resolution Imaging Spectroradiometer (MODIS) refers to two instruments currently collecting data as part of NASA's Earth Observing System (EOS) program. The first MODIS instrument was launched on board the Terra satellite on 18 December 1999, and the second was launched on board the Aqua satellite on 4 May 2002. A key instrument in the EOS mission, the MODIS instrument provides high radiometric sensitivity (12 bit) in 36 spectral bands ranging in wavelengths from 0.4 µm to 14.4 µm. MODIS obtains measurements with spatial resolutions of 250 m (bands 1 and 2), 500 m (bands 3-7), and 1000 m (bands 8-36) using a continuously rotating double-sided scan mirror.

In short, the MODIS instruments provide calibrated, geolocated radiance data from individual bands, and a series of geophysical products from land, ocean, and atmosphere disciplines that can be used for studies of processes and trends on local to global scales. This data helps scientists understand the Earth as a system, facilitating their ability to predict global climate changes and to differentiate between the impact of human activities and natural activities on the environment.

The National Snow and Ice Data Center (NSIDC) archives and distributes snow and sea ice products derived from MODIS Level 2 swath data and Level 3 gridded composites. Please see the MODIS Data at NSIDC Web site for tools to order and work with the data, information regarding the availability of data products, how to obtain guide documentation, FAQs, and other related MODIS information.

Sample Images

MODIS/Aqua data, Bering Sea, 06 February 2004

Snow extent, Andes Mountains, 04-11 July 2002

MODIS/Aqua data, Andes Mts., 4-11 July 2002

Ice surface temperature, Bering Sea, 06 February 2004