Fast radiative transfer models
Guidance for fast radiative transfer model developments
- Guidance on developing and testing tangent linear and adjoint code
- Read Me file (PDF) — Please read this PDF first
- Optical Path Transmittance: OPTRAN. Forward and Adjoint Modeling (PDF)
- Tangent Linear Coding (PDF)
- Adjoint Coding (PDF)
- Jacobian (or K) Coding (PDF)
Advances in fast radiative transfer models for scattering atmospheres
- Optical Property Databases for Clouds (non-spherical implied)
- Bryan Baum’s data. Ice clouds; Infrared only; specific instruments; a subset of Ping Yang’s data.
- Guosheng Liu’s data. Microwave only.
- Ping Yang’s data. Infrared only. Delivered to JCSDA and available on request from Fuzhong Weng
- Optical Property Databases for Aerosols
- Ping Yang’s data. Infrared only. Delivered to JCSDA and available on request from Fuzhong Weng
Fast model status summary
See also the full summaries of model features and development status provided by the model developers and updated after each ITSC by the RTSP working group.
| Model | Supported sensors | Contact | Website |
|---|---|---|---|
| RTTOV | Multi-sensor * | Roger Saunders (UKMO) | Eumetsat NWP SAF website |
| CRTM | Multi-sensor * | Paul van Delst (NESDIS) | Paul van Delst’s web documentation |
| MSCFAST | HIRS,GOES,AIRS | Louis Garand (MSC) | more details |
| OSS | AIRS | Jean-Luc Moncet (AER) | |
| SARTA | AIRS | Scott Hannon (UMBC) | SARTA website |
| PFAAST | Hal Woolf (CIMSS) | ||
| Gastropod | AIRS | Vanessa Sherlock (NIWA) | Gastropod website |
| PCRTM | AIRS,IASI,NAST-I | Xu Liu (NASA) | |
| RTIASI | IASI | Marco Matricardi (ECMWF) | |
| LMD fast models | Alain Chedin/Noelle Scott (LMD) | ||
| Zeeman model | SSMIS | Yong Han (NESDIS) |
* see full summary for list of supported sensors
Utility Software
- Software for interpolating profiles and mapping of Jacobians from the fast RT layering to NWP vertical coordinates (TL/AD/Gradient) is now part of RTTOV-9. A stand-alone version of the software is available at:
http://exp-studies.tor.ec.gc.ca/e/paper_data/tstintavg_e.html - Profile_Utility webpage containing Fortran95 code and documentation to perform units conversions and level-to-layer conversions on atmospheric quantities (Forward models only).