Software and Analysis

  • Tools and analysis for pre-launch spectral calibration of the Cross-track Infrared Sounder (CrIS), a Fourier transform infrared spectrometer for the NOAA Suomi NPP and JPSS weather satellites, using data from the thermal vacuum (TVAC) tests. See the README in the git repo for an overview of the software. Analysis is in the reports subdirectory. tvac_j2 github repo

  • Software for Atmospheric Infrared Sounder (AIRS) deconvolution and the translation of AIRS to CrIS radiances. Methods are described in the AIRS deconvolution paper, listed in my CV. We have been using these tools for some time to evaluate AIRS and CrIS simultaneous nadir overpasses (SNOs). We also have software for deconvolution and the translation of the infrared atmospheric sounding interferometer (IASI) to CrIS radiances, a much easier task than the AIRS translation. airs_decon github repo, iasi_decon github repo

  • Based on the work above, we are developing software for a climate hyper-spectral infrared product (CHIRP), the translation of AIRS, CrIS, and eventually IASI radiances to a common format as part of a long term record for global climate monitoring. We are using this now at UMBC and it should be available as a JPL product by fall 2020. chirp github repo

  • A package ``obs_stats'' to do long-span all-obs stats from AIRS and CrIS SDR and other supporting data, including equal area maps of mean, variance, PDFs, and trends. See the README files in the top level and obs_source directories for more details. obs_stats github repo

  • The UMBC verson of the CrIS Calibration Algorithm and Sensor Testbed (CCAST), software to take CrIS level 0 (telemetery) data to calibrated radiances. We use this for almost all of our CrIS analysis, and have periodically reprocessed all SNPP and J1 data from the start of their respective missions. See the README for a list of significant features relative to the similar NOAA and NASA/UW products. ccast github repo

  • An early version of a Matlab package for radiative transfer calculations from compressed tabulated optical depths (a Matlab version of ``kcarta'', see references in my CV), along with tools and scripts for building a database of compressed tabulated optical depths from HITRAN data.

  • The Radiative Transfer Profile (RTP) package, an HDF 4 data format and application interface for storage and manipulation of atmospheric profiles and associated spectra. Also assorted Matlab HDF 4 tools, including a Matlab RTP interface.



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