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LANCE-MODIS Collections 6 & 6.1

VIIRS-LAND Collections 1 & 2



Welcome to the LANCE-MODIS data system operated by the GSFC Terrestrial Information Systems Laboratory, Code 619. LANCE-MODIS provides certain Aqua and Terra MODIS L0, L1, L2, L2G, L3 products, and NPP VIIRS L2 products on a near-real-time basis. On average, the MODIS L1 and L2 products are available within 3 hours and VIIRS products with 3.5 hours of the observation time. Data products may be accessed from the HTTPS site.

LANCE-MODIS produces Collections 6 and 6.1 (C6 and C6.1) MODIS land and atmosphere NRT products, which are very similar to the standard MODIS products with some minor differences; these differences (described in the About section) facilitate their shortened production schedules. We currently provide both the earlier C6 and the more recent C6.1 collections as we transition from one to the other. C6.1 represents the best quality MODIS science products to date. Hence, users are strongly encouraged to switch to using C6.1 Level 1 and Atmosphere NRT products as soon as is feasible, since we plan to phase out C6 Level 1 and Atmosphere NRT production around November 1. 2017.

LANCE-MODIS is part of a larger system, called LANCE (Land, Atmosphere Near-real-time Capability for EOS, see, which includes four near-real-time systems: the GES DISC AIRS and MLS systems, the OMI SIPS, AMSR SIPS, and this 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 HTTPS Site.

2019.07.01 - Systems Reboot July 1 and July 2, 2019

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2019.06.12 - Global Data Assimilation System (GDAS) Product Update
1 (FV3) upgrade in operational processing.
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2019.06.05 - JPSS-1 VIIRS Level-1 NRT Release Note
VIIRS Level-1 (L1) data products derived from processing the JPSS-1 (J1) instrument data on the LANCE Near-Real-Time (NRT) processing system are now available to NRT users.
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2012.09.10 - NRL-UND product
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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