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Created by
Robin Hogan, last updated on Oct 07, 2022
2 minute read
There are two categories of participant: existing CKD models with a fixed number of bands and spectral intervals, and CKD tools, which generate new CKD models with some control over the accuracy, efficiency (i.e. total number of spectral intervals) and range of applicability (e.g. gases treated and range of concentrations supported). The main purpose of CKDMIP is to evaluate and improve the way that CKD tools generate CKD models.
1. CKD tools
The entries in the final three columns link to results of the evaluation of each CKD tool against line-by-line reference calculations. The FTP site contains all files from which the plots have been produced.
| Name | Reference | Contact | Summary page | LW results (PDF) | SW results (PDF) |
|---|---|---|---|---|---|
|
SOCRATES: Suite Of Community Radiation codes based on Edwards and Slingo |
James Manners (Met Office) | ||||
| ecCKD: ECMWF Correlated K-Distribution tool | Hogan and Matricardi (2022) | Robin Hogan (ECMWF) | v0.5/v0.6 | ||
| ARTDECO-PyKdis (ARTDECO = Atmospheric Radiative Transfer Database for Earth Climate Observation) | Lacis & Oinas (1991) and Edwards & Francis (2000). | Mathieu Compiègne (HYGEOS) | Results | ||
| PSLACKD: the Penn State/LAngley CKD Works | Kato et al. (1999) | Seiji Kato (NASA Langley) | v5.002 | ||
| CMA scheme | Zhang et al. (2003) | Hua Zhang (CMA) | v1.1/v1.2 | ||
| mstrnX | Sekiguchi and Nakajima (2008) | Miho Sekiguchi (Tokyo U. Marine Sci. & Tech.) | v11 | ||
| INSA-CNRS/LOA/HYGEOS model | Numerous papers | Frédéric André (INSA Lyon), Mathieu Compiègne (HYGEOS), Laurent Labonotte (LOA) | |||
| KBIN: a k-distribution method without correlation assumption | Doppler et al. (2014) | Nils Madenach, Juergen Fischer, Rene Preusker (FU Berlin) |
2. CKD models
Entries under the "LW results summary" and "SW results summary" columns indicate versions of the datasets that have been uploaded and are present on the FTP site, and the links take you to a page summarizing the evaluation against line-by-line reference calculations.
| Name | Reference | Contact | LW results summary | SW results summary |
|---|---|---|---|---|
| ecRad-RRTMG: Rapid Radiative Transfer Model for GCMs (ECMWF implementation) | Mlawer et al. (1997), Iacono et al. (2008), Hogan & Bozzo (2018) | Robin Hogan (ECMWF) | v1.2.0 | v1.2.0 |
| RRTMGP: RRTM for GCM applications - Parallel, both "full" and "reduced" spectral resolution | Pincus et al. (2019) | Robert Pincus (U. Colorado) |
v181204 (full) v1.5 (full vs reduced) |
v181204 (full) v1.5 (full vs reduced) |
| MODTRAN: Moderate resolution atmospheric transmission | Berk et al. (1998) | Alexander Berk (Spectral Sciences Inc.) | ||
| RRTMGP-NN: Neural-network version of RRTMGP gas optics scheme | Peter Ukkonen | v1.0 |
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