|
LANCE-MODIS will operate on a 7x24 hour basis. LANCE-MODIS has two
standalone systems that use different network routes. It is expected
that this redundancy will reduce the system downtime to less than 1%.
Whereas the standard MODIS forward processing acquires 2-hour L0 files for
Aqua and Terra from EDOS within 7-8 hours of real time, LANCE-MODIS
acquires session-based L0 files from EDOS and the end of the session is
available within 10-30 minutes after real time. LANCE-MODIS uses the
Terra attitude and ephemeris data entrained in the L0 data. However, for
Aqua the attitude and ephemeris data are acquired from the EDOS rate
buffer. All of the MODIS Level 1 (L1), L2, and L3 products generated by
LANCE-MODIS have been modified to add "NRT" metadata to the filenames to
enable the products to be distinguished from the MODIS standard
forward-processed products. LANCE-MODIS acquires all of the ancillary
products from the data suppliers. The production rules for some of the
science codes have been relaxed with respect to these ancillary data to
allow the data products to be generated within 3 hours of real time.
Data products are archived in a rolling archive for 7+ days and are
available for distribution by direct access to the
FTP sites.
LANCE-MODIS Details:
|
