Geo2Grid Version 1.0.2 Released

Geo2Grid Version 1.0.2 Released

Postby kathys » Tue Aug 18, 2020 12:34 pm

The CSPP Geo team is releasing a minor update to the Geo2Grid software (Version 1.0.2) package. The Geo2Grid software provides the capability to create high quality single band and combined Red/Green/Blue (RGB) image files in an easy and efficient manner from geostationary imager data files in mission-standard format. Images can optionally be reprojected to a pre-defined or user-defined grid.

What is new in Geo2Grid Version 1.0.2:

    * Fix random PROJ error when multithreaded. This resulted in error messages such as "UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc4 in position 4: invalid continuation byte".

The software supports the following satellite/instrument combinations:

  • GOES-16 and GOES-17 Advanced Baseline Imager (ABI)
  • Himawari-8 Advanced Himawari Imager (AHI) (both HSD and HimawariCast formats)

Other important features of Geo2Grid software

  • True and natural color imagery creation includes:
  • Upsample and sharpen composite bands to the highest spatial resolution (500m).
  • Creation of pseudo “green” band for the ABI instruments.
  • Reflectance adjustment (dividing by cosine of the solar zenith angle).
  • Removal of atmospheric Rayleigh scattering (atmospheric correction).
  • All ABI Imager sectors and modes are supported.
  • Command line option supports latitude/longitude subsets.
  • Support for combining daytime RGB/nighttime RGB in one image.
  • Option to reproject image onto a user defined grid.
  • Utility script provided for overlaying borders, coastlines, etc.
  • Utility script provided for creating animations from the output GeoTIFF files.
  • Thorough documentation, examples, and verification data provided.

The following system requirements have not changed from the Geo2Grid Version 1.0.1 release.

Minimum system requirements
  • Intel or AMD CPU with 64-bit instruction support (2+ cores - 2.4 GHz),
  • 16 GB RAM (minimum),
  • CentOS 6 (or other compatible 64-bit Linux distribution),
  • 5 GB disk space (minimum).

System requirements for multi-band real-time processing
  • Intel or AMD CPU with 64-bit instruction support (20+ cores - 2.4 GHz),
  • 46 GB RAM (minimum),
  • CentOS 6 (or other compatible 64-bit Linux distribution),
  • 1 TB disk space (minimum for ~1 week of images, does not include long-term storage)

The software uses the number of specified CPU threads to create high quality reprojections in the lowest latency possible thanks to the use of the Dask python library. Dask splits data arrays into multiple “chunks” and processes them in parallel.

Geo2Grid software development is led at the University of Wisconsin Space Science and Engineering Center by David Hoese and Kathy Strabala. The software, test dataset and documentation can be obtained from the download page on the CSPP Geo website (login required).

Please contact with any questions, or to report any issues encountered when installing or running the software.
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