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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.


On Wednesday 2015-08-12 between 8:00 to 12:00 EDT the nrt1 system including ftp site will undergo scheduled maintenance and may be unavailable. On Thursday 2015-08-13 between 10 and 12 EDT the nrt2 system will be unavailable.

06.24.2015 Production in the LANCE-MODIS NRT1 system will be down on 2015-07-01 between 14:00 and 16:00 GMT Production in the lance-modis nrt1 system will be down on 2015-07-01 between 14:00 and 16:00 GMT. Data at will be available via ftp during this time, however more recent data may be available at until nrt1 production catches up (probably by 18:00 GMT). Likewise production in the lance-modis nrt2 system will be down on 2015-07-02 between 14:00 and 16:00 GMT, with similar latency effects.

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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