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The objective of this website is to present the results of Line-By-Line
Radiative Transfer Model (LBLRTM, Clough et al., 1992; Clough and Iacono, 1995)
calculations for a selection of the Intercomparison of Radiation
codes in Climate Models (ICRCCM, Ellingson and Fouquart, 1991) project cases.
All the results presented here are obtained with version 8.4 of the LBLRTM
available at
Atmospheric and Environmental Research Inc.
website. The LBLRTM programs were compiled with PGI f90 on LINUX paltform.
The ICRCCM cases chosen for this website are listed in the following table.
To obtain the radiances and fluxes profiles shown in the table, ten calls to
the LBLRTM were required for each case. The input files
to the LBLRTM are given here for information. |
| Case No. |
Sounding |
Absorber |
ICRCCM Case No. |
| 1 |
mid-latitude summer |
CO2 (300 ppmv) |
9 |
| 2 |
mid-latitude summer |
CO2 (600 ppmv) |
10 |
| 3 |
mid-latitude summer |
H2O with continuum |
19 |
| 4 |
mid-latitude summer |
H2O, without continuum |
20 |
| 5a |
mid-latitude summer |
O3 (14 μm band) |
23a |
| 5b |
mid-latitude summer |
O3 (9.6 μm band) |
23b |
| 5c |
mid-latitude summer |
O3 (14 and 9.6 μm band) |
23c |
| 6 |
tropical |
H2O, O3, CO2 (300 ppmv) |
25 |
| 7 |
mid-latitude summer |
H2O, O3, CO2 (300 ppmv) |
27 |
| 8 |
mid-latitude summer |
H2O, O3, CO2 (600 ppmv) |
28 |
| 9 |
mid-latitude winter |
H2O, O3, CO2 (300 ppmv) |
29 |
| 10 |
subarctic summer |
H2O, O3, CO2 (300 ppmv) |
31 |
| 11 |
subarctic winter |
H2O, O3, CO2 (300 ppmv) |
33 |
| 12 |
mid-latitude summer |
H2O (without continuum)
O3, CO2 |
35 |
| 13a |
mid-latitude summer |
CH4 (1.75 ppmv) |
37a |
| 13b |
mid-latitude summer |
N2O (0.28 ppmv) |
37b |
| 13c |
mid-latitude summer |
CH4 (1.75 ppmv)
N2O (0.28 ppmv) |
37g |
| 14 |
mid-latitude summer |
0.75 x H2O with continuum,
O3, CO2 (300 ppmv) |
52 |
| 15 |
mid-latitude summer |
0.75 x H2O without continuum,
O3, CO2 (300 ppmv) |
53 |
| 16 |
mid-latitude summer |
1.25 x H2O with continuum,
O3, CO2 (300 ppmv) |
54 |
| 17 |
mid-latitude summer |
1.25 x H2O without continuum,
O3, CO2 (300 ppmv) |
55 |
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| References |
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Clough, S. A., M. J. Iacono, and J. Moncet, 1992: Line-by line calculations
of atmospheric fluxes and cooling rates: Application to water vapor,
J. Geophy. Res., 97, 15,761-15,785. |
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|
Clough, S. A. and M. J. Iacono, 1995: Line-by line calculation
of atmospheric fluxes and cooling rates 2. Application to carbon dioxide,
ozone, methane, nitrous oxide and halocarbons,
J. Geophy. Res., 100, 16,519-16,535. |
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Ellingson, R. G. and Y. Fouquart, 1991: The Intercomparison of radiation
codes in climate models: An Overview, J. Geophy. Res., 96,
8929-8953. |
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