IMAPP MODIS L1B and True Color GeoTIFF reprojection software Version 1.2 release
We are pleased to announce a new release (version 1.2) of the International MODIS/AIRS Processing Package (IMAPP) Polar2grid software for reformatting MODIS Level 1B data into reprojected GeoTIFF files in support of the direct broadcast community. This software enables users to create swath based or user defined domain reprojected images of:
- MODIS Level 1B GeoTIFF files for a selection of visible and infrared bands.
- MODIS True Color 24 bit GeoTIFF files.
What is new in Version 1.2 release?
- A 250m resolution predefined grid definition is available that will fit data to a 250m Platte Carrée (wgs84) projection.
- Fixed a problem with 250m MODIS file interpolations from 1km geolocation files that contained missing values.
- Proj4 grid entries used by the polar2grid software now use latitude/longitude degrees as reference coordinates instead of radians. If you are using grids previously defined by the grid_helper.sh script, you will have to define the grids again.
This is a joint IMAPP/CSPP release that can perform the reprojections on both MODIS L1B files as well as VIIRS SDR files.
Software Features
- Accepts MODIS Level 1B HDF4 files as input.
- Creates standardized output GeoTIFF files. Image default projection is the WGS 84/Platte Carrée coordinate system.
- Software will use the the 250 m band 1 to sharpen the 1 km bands for high resolution true color image file generation.
- Execution takes place using simple bash scripts; users specify a directory containing the L1B files, or the files themselves.
- ms2gt software (http://nsidc.org/data/modis/ms2gt/) modules are used for the reprojections.
- Accepts proj4 grid definition parameters.
The software uses MODIS L1B HDF4 files as input, and transforms a select number of 1km and 250m band data into high resolution reprojected Geographic Tagged Image File Format (GeoTIFF) files. The default GeoTIFF projection is the WGS 84/Platte Carrée coordinate system. A number of projections and grids can be chosen. Local grids can be defined. This open source software was developed by a team at the University of Wisconsin, led by David Hoese.
This software package is supported on 64 bit Intel Linux platforms. Source code, binaries, execution scripts and documentation are included at the IMAPP website:
http://cimss.ssec.wisc.edu/imapp/
Please use the 'Contact Us' form from our website to submit any questions or comments about IMAPP.