1. An update on the RTTOV fast radiative transfer model (currently at version 12)
- Author
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David A. Rundle, Peter Rayer, Emma Turner, Marco Matricardi, Alan J. Geer, Pascale Roquet, Niels Bormann, Jérôme Vidot, James Hocking, Roger Saunders, Pascal Brunel, Cristina Lupu, Centre national de recherches météorologiques (CNRM), Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
- Subjects
Radiometer ,010504 meteorology & atmospheric sciences ,business.industry ,Computer science ,RTTOV ,lcsh:QE1-996.5 ,0211 other engineering and technologies ,02 engineering and technology ,010502 geochemistry & geophysics ,01 natural sciences ,lcsh:Geology ,symbols.namesake ,Data assimilation ,Atmospheric radiative transfer codes ,Jacobian matrix and determinant ,[SDE]Environmental Sciences ,Radiance ,Radiative transfer ,symbols ,business ,Physics::Atmospheric and Oceanic Physics ,021101 geological & geomatics engineering ,Remote sensing ,Graphical user interface ,0105 earth and related environmental sciences - 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.
- Published
- 2018