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Welcome to the LANCE-MODIS data system operated by the GSFC Terrestrial Information Systems Branch, Code 614.5. LANCE includes three near-real-time systems: the GES DISC AIRS and MLS systems, the OMI SIPS system, and this system. LANCE-MODIS provides certain Aqua and Terra MODIS L0, L1, L2, L2G, and L3 products on a near-real-time basis. On average, the L1 and L2 products are available within 2.5 hours of the observation time. LANCE-MODIS has two standalone systems to improve availability. Data products may be accessed from the FTP sites of either system.

Detailed information about LANCE-MODIS including the hardware configuration, the data flows, and metrics.

Data Products
Information about LANCE-MODIS data products including latency information, PGE versions, and a comparison of NRT and standard products.

Known Issues
Known issues with LANCE-MODIS data products.

User Services
Contact information for LANCE-MODIS user services.

Users must register before accessing LANCE-MODIS data products on the FTP Site.


08.08.14 - The LANCE-MODIS web server,, will be shut down on Wednesday August 13, 2014 from 7am to 10am EDT for scheduled maintenance. During the down time, the web services will not be available. The backup web server,, and web services will be available as usual during the down time. We apologize for any inconvenience this may cause.

10.09.12 - The Naval Research Laboratory and the University of North Dakota developed a value-added aerosol optical depth dataset based on MODIS Level 2 aerosol products. The NRL-UND product is a level 3 gridded product specifically designed for quantitative applications including data assimilation and model validation. This dataset has been given the ESDT identifier MxDAODHD
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