An update on the RTTOV fast radiative transfer model (currently at version 12)

By R. Saunders, James Hocking, E. Turner, P. Rayer, D. Rundle, P. Brunel, Jérôme Vidot, Pascale Roquet, M. Matricardi, Alan J. Geer and 2 more. Geoscientific Model Development, 2018

331 citations recorded by the source corpus.

Abstract. This paper gives an update of the RTTOV (Radiative Transfer for TOVS) fast radiative transfer model, which is widely used in the satellite retrieval and data assimilation communities. RTTOV is a fast radiative transfer model for simulating top-of-atmosphere radiances from passive visible, infrared and microwave downward-viewing satellite radiometers. In addition to the forward model, it also optionally computes the tangent linear, adjoint and Jacobian matrix providing changes in radiances for profile variable perturbations assuming a linear relationship about a given atmospheric state. This makes it a useful tool for developing physical retrievals from satellite radiances, for direct radiance assimilation in NWP models, for simulating future instruments, and for training or teaching with a graphical user interface. An overview of the RTTOV model is given, highlighting the updates and increased capability of the latest versions, and it gives some examples of its current performance when compared with more accurate line-by-line radiative transfer models and a few selected observations. The improvement over the original version of the model released in 1999 is demonstrated.

Subfields: Atmospheric Science, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/bca88e3a215ab70c101e5599c62434ca6eebff9f

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In Atmospheric Science

1. Alan J. Geer
2. L. Haimberger
3. Richard G. Forbes
4. S. B. Healy
5. Hans Hersbach
6. Jean-Noel Thepaut
7. M. Janisková
8. R. Radu

In Global and Planetary Change

1. Alan J. Geer
2. L. Haimberger
3. Richard G. Forbes
4. S. B. Healy
5. Jean-Noel Thepaut
6. R. Radu
7. P. Berrisford
8. Hans Hersbach

Citations in the corpus

• The ERA5 global reanalysis (2020, methodology): “In ERA5 the variability in CO2 is taken into account for the early IR sensors assimilated in the reanalysis for the duration of these missions: HIRS, SSU and VTPR. CO2 profiles used in RTTOV-11 are estimated from zonal fields as used in the ERA5 radiation scheme (Section 6.1).”