This is a work-in-progress rewrite of the implementation described in this publication:
Gladkova, I., Kihai, Y., Ignatov, A., Shahriar, F., & Petrenko, B. (2015).
SST Pattern Test in ACSPO clear-sky mask for VIIRS. Remote Sensing of
Environment.
This program requires a C++ toolchain (e.g. GCC), NetCDF C library, and OpenCV 2.x.
On Debian/Ubuntu, you can install them by running:
apt-get install build-essential libnetcdf-dev libopencv-dev
Build the program executable spt by running make. The program takes
the ACSPO granule as its only argument. After running it, it'll save
the output in a new variable named spt_mask in the granule. For example:
$ make -j # build the program
...
$ f=ACSPO_V2.31b02_NPP_VIIRS_2014-10-30_0400-0409_20141111.005748.nc
$ cp $f SPT_$f # make a copy of the granule
$ ./spt SPT_$f # run program
...
$ ncdump -h SPT_$f | grep spt_mask
ubyte spt_mask(scan_lines_along_track, pixels_across_track) ;
spt_mask:UNITS = "none" ;
spt_mask:Description = "SPT mask packed into 1 byte: bits1-2 (00=clear; 01=probably clear; 10=cloudy; 11=clear-sky mask undefined); bit3 (0=no thermal front; 1=thermal front)" ;
Unless otherwise noted, the source files are distributed under the MIT license found in the LICENSE file.