received Direct Broadcast (DB) MODIS data are automatically processed
based on freely distributed software packages. The chain with examples
is shown on the following poster.
the first step, after every Terra/Aqua overpass our processing chain
begins with creating geolocated and calibrated radiances from the
raw data stream using the MODIS Level1DB software of the SeaDAS
group. The preprocessed data of the infrared bands are then destriped
removing artificial stripes. In order to retrieve atmospheric properties
from these Level 1B data we use the MODIS Level2 part of the International
MODIS/AIRS Processing Package (IMAPP). These atmospheric, near-real
time Level2 products are assimilated twice a day (at 00 and 12 UTC)
by the Direct Broadcast CIMSS Regional Assimilation System (DBCRAS)
numerical weather prediction software and by its nested version
(NDBCRAS). The DBCRAS and NDBCRAS models calculate 72 and 48 hours
long weather forecasts with 48 and 16 km horizontal resolution,
respectively. Based on the infrared information of the MODIS data
the fire pixels are identified (for clear regions) with the utilization
of the MOD14 DB software. During daytime two additional software
is also included in the processing chain. The first is the True
Color software generating high resolution images for every overpass.
The second is the Direct Broadcast Google Earth (DBGE) which converts
the true color imagery to a compatible format with the popular Google
Earth software. The link for the daily MODIS imagery covering whole
Europe can be found at http://nimbus.elte.hu/kutatas/sat/modis-en_latest.pl.