GEOCAT Level 2 Software for Himawari-8, Himawari-9 and GOES-15
GEOCAT is an algorithm testbed that was used by many of the GOES-R science teams to develop product algorithms. Originally created by NOAA scientist Mike Pavolonis in collaboration with software developers at CIMSS, GEOCAT now supports processing data from multiple instruments, including AHI and current GOES Imager.
The initial release of the CSPP Geo GEOCAT package will support processing data from the AHI instrument on the Himawari-8 and Himawari-9 satellites, as well as the GOES-15 Imager. The software will be capable of processing AHI data in both the HimawariCast (HRIT) and HimawariCloud (HSD) data formats, and will process GOES Imager data in AREA file format, as written by the GVAR software package. Output will be written to NetCDF-4 files. This release is planned for Summer 2018.
Note that processing GOES-16 ABI data will not be supported by the initial release.
Products planned for the initial release:
- Clear Sky Masks
- Cloud and Moisture Imagery
- Cloud Optical Depth (day/night)
- Cloud Particle Size Distribution (day/night)
- Cloud Phase
- Cloud Type
- Cloud Top Height
- Cloud Top Pressure
- Cloud Top Temperature
- Cloud Liquid Water Path (day/night)
- Cloud Ice Water Path (day/night)
- Low Cloud and Fog
Later releases will include additional science algorithms as well as updates to existing algorithms.
The recommended hardware configuration to run GEOCAT on AHI data in the full-resolution HSD format is a rack-mounted system with the specifications shown below. This is based on estimates derived from benchmarking GEOCAT running on proxy data, and assumes that only GEOCAT processing will be done on the machine.
Note that the computational cost of routine quicklook image generation is not accounted for in this hardware recommendation.
The hardware requirements for running GEOCAT on the lower resolution GVAR and HimawariCast data streams are somewhat relaxed. Detailed system requirements for processing those data streams will be posted when the software is released.
Minimum system requirements to process AHI data in HSD format:
- Intel Xeon E5 v2 “Ivy Bridge” or better, 20-core (2 x 10-core), 2.8GHz CPU with 64-bit instruction support,
- 192 GB RAM
- CentOS 6 64-bit Linux (or other compatible 64-bit Linux distribution),
- 14 TB disk space (does not include long-term storage)