Atmospheric radiative transfer codes
An Atmospheric radiative transfer model, code or simulator calculates radiative transfer of electromagnetic radiation through a planetary atmosphere, such as the Earth's.
Methods
At the core of a radiative transfer model lies the radiative transfer equation that is numerically solved using a solver such as a discrete ordinate method or a Monte Carlo method. The radiative transfer equation is a monochromatic equation to calculate radiance in a single layer of the Earth's atmosphere. To calculate the radiance for a spectral region with a finite width (e.g., to estimate the Earth's energy budget or simulate an instrument response), one has to integrate this over a band of frequencies (or wavelengths). The most exact way to do this is to loop through the frequencies of interest, and for each frequency, calculate the radiance at this frequency. For this, one needs to calculate the contribution of each spectral line for all molecules in the atmospheric layer; this is called a line-by-line calculation. For an instrument response, this is then convolved with the spectral response of the instrument. A faster but more approximate method is a band transmission. Here, the transmission in a region in a band is characterised by a set of pre-calculated coefficients (depending on temperature and other parameters). In addition, models may consider scattering from molecules or particles, as well as polarisation; however, not all models do so.
Applications
Radiative transfer codes are used in broad range of applications. They are commonly used as forward models for the retrieval of geophysical parameters (such as temperature or humidity). Radiative transfer models are also used to optimize solar photovoltaic systems for renewable energy generation.[1] Another common field of application is in a weather or climate model, where the radiative forcing is calculated for greenhouse gases, aerosols or clouds. In such applications radiative transfer codes are often called radiation parameterization. In these applications the radiative transfer codes are used in forward sense, i.e. on the basis of known properties of the atmosphere one calculates heating rates, radiative fluxes, and radiances.
There are efforts for intercomparison of radiation codes. One such project was ICRCCM (Intercomparison of Radiation Codes in Climate Models) effort that spanned the late 1980s - early 2000s. Current (2011) project Continual Intercomparison of Radiation Codes emphasises also using observations to define intercomparison cases. [2]
Table of models
Name |
Website |
References |
UV |
Visible |
Near IR |
Thermal IR |
mm/sub-mm |
Microwave |
line-by-line/band |
Scattering |
Polarised |
Geometry |
License |
Notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
4A/OP | Scott and Chédin (1981) | No | No | Yes | Yes | No | No | line-by-line | ? | ? | freeware | |||
6S/6SV1 | Kotchenova et al. (1997) | No | Yes | No | No | No | No | band | ? | Yes | non-Lambertian surface | |||
ARTS | Buehler et al. (2005) | No | No | No | Yes | Yes | Yes | line-by-line | Yes | Yes | spherical 1D, 2D, 3D | GPL | ||
COART | Jin et al. (2006) | Yes | Yes | Yes | Yes | No | No | Yes | No | plane-parallel | free | |||
CRM | No | Yes | Yes | ? | No | No | ? | ? | freely available | Part of NCAR Community Climate Model | ||||
CRTM | No | Yes | Yes | Yes | No | Yes | band | Yes | ? | |||||
DART radiative transfer model | Gastellu-Etchegorry et al. (1996) | No | Yes | Yes | Yes | No | No | band | Yes | ? | spherical 1D, 2D, 3D | free for research with license | non-Lambertian surface, landscape creation and import | |
DISORT | Stamnes et al. (1988) | Yes | Yes | Yes | Yes | No | radar | Yes | No | plane-parallel | free with restrictions | discrete ordinate, used by others | ||
FARMS | Xie et al. (2016) | λ>0.2 µm | Yes | Yes | No | No | No | band | Yes | No | plane-parallel | free | Rapidly simulating downwelling solar radiation at land surface for solar energy and climate research | |
Fu-Liou | Fu and Liou (1993) | No | Yes | Yes | ? | No | No | Yes | ? | plane-parallel | usage online, source code available | web interface online at | ||
FUTBOLIN | Martin-Torres (2005) | λ>0.3 µm | Yes | Yes | Yes | λ<1000 µm | No | line-by-line | Yes | ? | spherical or plane-parallel | handles line-mixing, continuum absorption and NLTE | ||
GENLN2 | Edwards (1992) | ? | ? | ? | ? | ? | ? | line-by-line | ? | ? | ||||
KARINE | Eymet (2005) | No | No | Yes | No | No | ? | ? | plane-parallel | GPL | ||||
KCARTA | ? | ? | Yes | Yes | ? | ? | line-by-line | Yes | ? | plane-parallel | freely available | AIRS reference model | ||
KOPRA | No | No | No | Yes | No | No | ? | ? | ||||||
LBLRTM | Clough et al. (2005) | Yes | Yes | Yes | Yes | Yes | Yes | line-by-line | ? | ? | ||||
LEEDR | Fiorino et al. (2014) | λ>0.2 µm | Yes | Yes | Yes | Yes | Yes | band or line-by-line | Yes | ? | spherical | US government software | extended solar & lunar sources;
single & multiple scattering | |
LinePak | Gordley et al. (1994) | Yes | Yes | Yes | Yes | Yes | Yes | line-by-line | No | No | spherical (Earth and Mars), plane-parallel | freely available with restrictions | web interface, SpectralCalc | |
libRadtran | Mayer and Kylling (2005) | Yes | Yes | Yes | Yes | No | No | band or line-by-line | Yes | Yes | plane-parallel or pseudo-spherical | GPL | ||
MATISSE | Caillault et al. (2007) | No | Yes | Yes | Yes | No | No | band | Yes | ? | proprietary freeware | |||
MCARaTS | [19] | GPL | 3-D Monte Carlo | |||||||||||
MODTRAN | Berk et al. (1998) | ṽ<50,000 cm−1 | Yes | Yes | Yes | Yes | Yes | band or line-by-line | Yes | ? | proprietary commercial | solar and lunar source, uses DISORT | ||
MOSART | Cornette (2006) | λ>0.2 µm | Yes | Yes | Yes | Yes | Yes | band | Yes | No | freely available | |||
RFM | No | No | No | Yes | No | No | line-by-line | ? | ? | available on request | MIPAS reference model based on GENLN2 | |||
RRTM/RRTMG | Mlawer, et al. (1997) | ṽ<50,000 cm−1 | Yes | Yes | Yes | Yes | ṽ>10 cm−1 | ? | ? | free of charge | uses DISORT | |||
RTMOM | λ>0.25 µm | Yes | Yes | λ<15 µm | No | No | line-by-line | Yes | ? | plane-parallel | freeware | |||
RTTOV | Saunders et al. (1999) | λ>0.4 µm | Yes | Yes | Yes | Yes | Yes | band | Yes | ? | available on request | |||
SBDART | Ricchiazzi et al. (1998) | Yes | Yes | Yes | ? | No | No | Yes | ? | plane-parallel | uses DISORT | |||
SCIATRAN | Rozanov et al. (2005)
,[25] Rozanov et al. (2014) |
Yes | Yes | Yes | No | No | No | band or line-by-line | Yes | Yes | plane-parallel or pseudo-spherical or spherical | |||
SHARM | Lyapustin (2002) | No | Yes | Yes | No | No | No | Yes | ? | |||||
SHDOM | Evans (2006) | ? | ? | Yes | Yes | ? | ? | Yes | ? | |||||
Streamer, Fluxnet | Key and Schweiger (1998) | No | No | λ>0.6 mm | λ<15 mm | No | No | band | Yes | ? | plane-parallel | Fluxnet is fast version of STREAMER using neural nets | ||
XRTM | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | plane-parallel and pseudo-spherical | GPL | ||||
Name | Website | References | UV | VIS | Near IR | Thermal IR | Microwave | mm/sub-mm | line-by-line/band | Scattering | Polarised | Geometry | License | Notes |
Molecular absorption databases
For a line-by-line calculation, one needs characteristics of the spectral lines, such as the line centre, the intensity, the lower-state energy, the line width and the shape.
Name | Author | Description |
---|---|---|
HITRAN[30] | Rothman et al. (1987, 1992, 1998, 2003, 2005, 2009, 2013) | HITRAN is a compilation of molecular spectroscopic parameters that a variety of computer codes use to predict and simulate the transmission and emission of light in the atmosphere. The original version was created at the Air Force Cambridge Research Laboratories (1960's). The database is maintained and developed at the Harvard-Smithsonian Center for Astrophysics in Cambridge MA, USA. |
GEISA[31] | Jacquinet-Husson et al. (1999, 2005, 2008) | GEISA (Gestion et Etude des Informations Spectroscopiques Atmosphériques: Management and Study of Spectroscopic Information) is a computer-accessible spectroscopic database, designed to facilitate accurate forward radiative transfer calculations using a line-by-line and layer-by-layer approach. It was started in 1974 at Laboratoire de Météorologie Dynamique (LMD/IPSL) in France. GEISA is maintained by the ARA group at LMD (Ecole Polytechnique) for its scientific part and by the ETHER group (CNRS Centre National de la Recherche Scientifique-France) at IPSL (Institut Pierre Simon Laplace) for its technical part. Currently, GEISA is involved in activities related to the assessment of the capabilities of IASI (Infrared Atmospheric Sounding Interferometer on board of the METOP European satellite) through the GEISA/IASI database derived from GEISA. |
See also
- Discrete dipole approximation codes
- Codes for electromagnetic scattering by cylinders
- Codes for electromagnetic scattering by spheres
- Optical properties of water and ice
References
- Footnotes
- ↑ R.W. Andrews, J.M. Pearce, The effect of spectral albedo on amorphous silicon and crystalline silicon solar photovoltaic device performance, Solar Energy, 91,233–241 (2013). DOI:10.1016/j.solener.2013.01.030 open access
- ↑ http://circ.gsfc.nasa.gov/
- ↑ Scott, N. A.; Chedin, A. (1981). "A fast line-by- line method for atmospheric absorption computations: The Automatized Atmospheric Absorption Atlas". J. Appl. Meteor. 20 (7): 802–812. Bibcode:1981JApMe..20..802S. doi:10.1175/1520-0450(1981)020<0802:AFLBLM>2.0.CO;2.
- ↑ Kotchenova, S. Y.; Vermote, E. F.; Matarrese, R; Klemm, F. J. (2006). "Validation of a vector version of the 6S radiative transfer code for atmospheric correction of satellite data. Part I: Path Radiance". Applied Optics. 45 (26): 6762–6774. Bibcode:2006ApOpt..45.6762K. doi:10.1364/AO.45.006762. PMID 16926910.
- ↑ Buehler, S. A.; Eriksson, P.; Kuhn, T.; von Engeln, A.; Verdes, C. (2005). "ARTS, the Atmospheric Radiative Transfer Simulator". J. Quant. Spectrosc. Radiat. Transfer. 91 (1): 65–93. Bibcode:2005JQSRT..91...65B. doi:10.1016/j.jqsrt.2004.05.051.
- ↑ Jin, Z.; Charlock, T.P.; Rutledge, K.; Stamnes, K.; Wang, Y. (2006). "An analytical solution of radiative transfer in the coupled atmosphere-ocean system with rough surface". Appl. Opt. 45 (28): 7443–7455. Bibcode:2006ApOpt..45.7443S. doi:10.1364/AO.45.007443.
- ↑ Gastellu-Etchegorry, JP; Demarez, V; Pinel, V; Zagolski, F (1996). "Modelling radiative transfer in heterogeneous 3-D vegetation canopies". Rem. Sens. Env. 58: 131–156.
- ↑ Stamnes, Knut; Tsay, S. C.; Wiscombe, W.; Jayaweera, Kolf (1988). "Numerically stable algorithm for discrete-ordinate-method radiative transfer in multiple scattering and emitting layered media". Appl. Opt. 27 (12): 2502–2509. Bibcode:1988ApOpt..27.2502S. doi:10.1364/AO.27.002502.
- ↑ Xie, Y.; Sengupta, M.; Dudhia, J. (2016). "A Fast All-sky Radiation Model for Solar applications (FARMS): Algorithm and performance evaluation". Solar Energy. 135: 435–445. doi:10.1016/j.solener.2016.06.003.
- ↑ Fu, Q.; Liou, K.-N (1993). "Parameterization of the radiative properties of cirrus clouds". J. Atmos. Sci. 50 (13): 2008–2025. Bibcode:1993JAtS...50.2008F. doi:10.1175/1520-0469(1993)050<2008:POTRPO>2.0.CO;2.
- ↑ Martin-Torres, F. J.; Kutepov, A.; Dudhia, A.; Gusev, O.; Feofilov, A.G. (2003). "Accurate and fast computation of the radiative transfer absorption rates for the infrared bands in the atmosphere of Titan". Geophysical Research Abstracts: 7735. Bibcode:2003EAEJA.....7735M.
- ↑ Edwards, D. P. (1992), GENLN2: A general line-by-line atmospheric transmittance and radiance model, Version 3.0 description and users guide, NCAR/TN-367-STR, National Center for Atmospheric Research, Boulder, Co.
- ↑ KARINE: a tool for infrared radiative transfer analysis in planetary atmospheres par V. Eymet. Note technique interne, Laboratoire d'Energétique, 2005.
- ↑ Clough, S. A.; Shephard, M. W.; Mlawer, E. J.; Delamere, J. S.; Iacono, M. J.; Cady-Pereira, K.; Boukabara, S.; Brown, P. D. (2005). "Atmospheric radiative transfer modeling: a summary of the AER codes". J. Quant. Spectrosc. Radiat. Transfer. 91 (2): 233–244. Bibcode:2005JQSRT..91..233C. doi:10.1016/j.jqsrt.2004.05.058.
- ↑ Fiorino, S. T.; Randall, R. M.; Via, M. F.; Burley, J. L. (2014). "Validation of a UV-to-RF High-Spectral-Resolution Atmospheric Boundary Layer Characterization Tool". J. Appl. Meteor. Climatol. American Meteorological Society. 53 (1,): 136–156. doi:10.1175/JAMC-D-13-036.1.
- ↑ Gordley, L. L.; Marshall, B. T. (1994). "LINEPAK: Algorithm for Modeling Spectral Transmittance and Radiance". J. Quant. Spectrosc. Radiat. Transfer. 52 (5): 563–580. Bibcode:1994JQSRT..52..563C. doi:10.1016/0022-4073(94)90025-6.
- ↑ Mayer, B.; Kylling, A. (2005). "Technical note: The libRadtran software package for radiative transfer calculations - description and examples of use". Atmospheric Chemistry and Physics. 5 (7): 1855–1877. doi:10.5194/acp-5-1855-2005.
- ↑ Caillaut, K.; Fauqueux, S.; Bourlier, C.; Simoneau, P.; Labarre, L. (2007). "Multiresolution optical characteristics of rough sea surface in the infrared". Applied Optics. 46 (22): 5471–5481. Bibcode:2007ApOpt..46.5471C. doi:10.1364/AO.46.005471. PMID 17676164.
- ↑ "MCARaTS". sites.google.com. Retrieved 2016-04-01.
- ↑ Berk, A.; Bernstein, L. S.; Anderson, G. P.; Acharya, P. K.; Robertson, D. C.; Chetwynd, J. H.; Adler-Golden, S. M. (1998). "MODTRAN cloud and multiple scattering upgrades with application to AVIRIS". Remote Sensing of Environment. Elsevier. 65 (3,): 367–375. doi:10.1016/S0034-4257(98)00045-5.
- ↑ Cornette, William M. (2006). "Moderate Spectral Atmospheric Radiance and Transmittance (MOSART) Computer Code Version 2.00., Lexington, MA (2006)". Proc. IEEE-GRSS/AFRL Atmospheric Transmission Modeling Conference, Lexington MA.
- ↑ Mlawer, E. J.; Taubman, S. J.; Brown, P. D.; Iacono, M. J.; Claugh, S. A. (1997). "RRTM, a validated correlated-k model for the longwave". J. Geophys. Res. 102 (16): 663–682. Bibcode:1997JGR...10216663M. doi:10.1029/97JD00237.
- ↑ Saunders, R. W.; Matricardi, M.; Brunel, P. (1999). "An Improved Fast Radiative Transfer Model for Assimilation of Satellite Radiance Observations". Quart. J. Royal Meteorol. Soc. 125 (556): 1407–1425. Bibcode:1999QJRMS.125.1407S. doi:10.1256/smsqj.55614.
- ↑ Ricchiazzi, P.; Yang, S.; Gautier, C.; Sowle, D. (1998). "SBDART: A Research and Teaching Software Tool for Plane-Parallel Radiative Transfer in the Earth's Atmosphere". Bull. Am. Meteor. Soc. 79 (10): 2101–2114. Bibcode:1998BAMS...79.2101R. doi:10.1175/1520-0477(1998)079<2101:SARATS>2.0.CO;2.
- ↑ Rozanov, A.; Rozanov, V.; Buchwitz, M.; Kokhanovsky, A.; Burrows, J. P. (2005). "SCIATRAN 2.0-A new radiative transfer model for geophysical applications in the 175-2400 nm spectral region". Advances in Space Research. Elsevier. 36 (5): 1015–1019. Bibcode:2005AdSpR..36.1015R. doi:10.1016/j.asr.2005.03.012.
- ↑ Rozanov, V.; Rozanov, A.; Kokhanovsky, A.; Burrows, J. P. (2014). "Radiative transfer through terrestrial atmosphere and ocean: Software package SCIATRAN". Journal of Quantitative Spectroscopy and Radiative Transfer. Elsevier. 133: 13–71. Bibcode:2014JQSRT.133...13R. doi:10.1016/j.jqsrt.2013.07.004.
- ↑ Lyapustin, A. (2002). "Radiative transfer code SHARM-3D for radiance simulations over a non-Lambertian nonhomogeneous surface: intercomparison study". Applied Optics. OSA. 41 (27): 5607–5615. Bibcode:2002ApOpt..41.5607L. doi:10.1364/AO.41.005607. PMID 12269559.
- ↑ Evans, K. F. (1998). "The spherical harmonics discrete ordinate method for three-dimensional atmospheric radiative transfer". Journal of the Atmospheric Sciences. 55 (3): 429–446. Bibcode:1998JAtS...55..429E. doi:10.1175/1520-0469(1998)055<0429:TSHDOM>2.0.CO;2.
- ↑ Key, J.; Schweiger, A. J. (1998). "Tools for atmospheric radiative transfer: Streamer and FluxNet". Computers & Geosciences. 24 (5): 443–451. Bibcode:1998CG.....24..443K. doi:10.1016/S0098-3004(97)00130-1.
- ↑ HITRAN Site
- ↑ GEISA Site
- General
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- Mobley, Curtis D., Light and water: radiative transfer in natural waters; based in part on collaborations with Rudolph W. Preisendorfer, San Diego, Academic Press, 1994, 592 p., ISBN 0-12-502750-8
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- Preisendorfer, Rudolph W., Hydrologic optics, Honolulu, Hawaii : U.S. Dept. of Commerce, National Oceanic & Atmospheric Administration, Environmental Research Laboratories, Pacific Marine Environmental Laboratory, 1976, 6 volumes.
- Stephens, Graeme L., Remote sensing of the lower atmosphere : an introduction, New York, Oxford University Press, 1994, 523 p. ISBN 0-19-508188-9.
- Thomas, Gary E. and Knut Stamnes, Radiative transfer in the atmosphere and ocean, Cambridge, New York, Cambridge University Press, 1999, 517 p., ISBN 0-521-40124-0.
- Zdunkowski, W., T. Trautmann, A. Bott, Radiation in the Atmosphere. Cambridge University Press, 2007, 496 pages, ISBN 978-0-521-87107-5