The CRTM transmittance coefficient package

The CRTM transmittance coefficient generation package is a high-performance computing workflow to generate spectral and transmittance coefficients for the JCSDA Community Radiative Transfer Model (CRTM), which is used as an observation operator in satellite data assimilation applications. The characteristics of new instruments, whose observations are modeled by the CRTM, are encapsulated in these aforementioned coefficient data structures. This approach is a key factor in achieving the necessary high computational speeds with the CRTM. Complex atmospheric transmittance spectra in particular are approximated using the ODPS and ODAS algorithms. The transmittance coefficient generation package for the first time provides a unified and reproducible workflow to CRTM generate coefficients.

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Author Stegmann, P. G.
Johnson, Benjamin T.
Moradi, I.
Karpowicz, B.
McCarty, W.
Liu, H.
Dutta, S.
Auligne, Thomas D.
Publisher UCAR/NCAR - Library
Publication Date 2025-04-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-10T19:47:39.839244
Metadata Record Identifier edu.ucar.opensky::articles:43162
Metadata Language eng; USA
Suggested Citation Stegmann, P. G., Johnson, Benjamin T., Moradi, I., Karpowicz, B., McCarty, W., Liu, H., Dutta, S., Auligne, Thomas D.. (2025). The CRTM transmittance coefficient package. UCAR/NCAR - Library. https://n2t.net/ark:/85065/d7251pm6. Accessed 24 August 2025.

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