Download (V) lidort - Planetary Aeronomy

3.2
Optical depths .............................................................................................. 48
3.2.1 Line-by-line calculation ......................................................................... 48
3.2.1.1
Grid and resolution used for the OD simulation............................. 51
3.2.1.2
Spectral line catalogues .................................................................. 55
3.2.1.3
Line Mixing .................................................................................... 56
3.2.1.4
[Molecules] options ................................................................ 57
3.2.1.5
[xxxLP] options ......................................................................... 57
3.2.2 Cross sections......................................................................................... 60
3.2.2.1
Cross sections catalogues ............................................................... 60
3.2.2.2
[xxxXS] options ......................................................................... 60
3.2.3 Continua ................................................................................................. 62
3.2.3.1
O2 continua ..................................................................................... 62
3.2.3.2
N2 continua ..................................................................................... 63
3.2.3.3
CO2 and H2O continua .................................................................... 64
3.2.3.4
[Continua] options...................................................................... 64
3.2.4 Rayleigh scattering................................................................................. 65
3.2.4.1
[Continua] options...................................................................... 65
3.2.5 Aerosols ................................................................................................. 66
3.2.5.1
[xxxAER] options ....................................................................... 68
3.3
Radiative transfer model .............................................................................. 70
3.3.1 Determination of the Radiance .............................................................. 70
3.3.2 Atmosphere emission ............................................................................. 70
3.3.3 Surface contribution ............................................................................... 71
3.3.4 Determination of the Transmittances ..................................................... 72
3.3.5 Brightness temperature .......................................................................... 72
3.3.5.1
[Solar] options ......................................................................... 72
3.3.5.2
Radiative options in [SPn] ........................................................... 73
3.3.5.3
Radiative options in [SPn_FENn] ............................................... 73
3.3.6 Instrumental functions ........................................................................... 75
3.3.6.1
[Set] options .............................................................................. 75
3.3.6.2
[SPn] options .............................................................................. 76
3.3.6.3
OPUS instrument .................................................................... 78
3.3.6.4
IMG instrument ....................................................................... 79
3.3.6.5
ACE instrument ....................................................................... 79
3.3.6.6
IASI instrument .................................................................... 79
3.3.6.7
SOIR instrument .................................................................... 81
3.3.6.8
[SPn_FENx] options .................................................................. 85
4. Onion peeling method ........................................................................................... 88
4.1
Onion peeling options .................................................................................. 89
5. Retrieval module ................................................................................................... 90
5.1
General description ...................................................................................... 90
5.1.1 [Run] options ....................................................................................... 91
5.2
Determination of the Jacobians .................................................................... 92
5.3
A priori covariance matrices ........................................................................ 92
5.3.1 Covariance options in [xxxLP], [xxxXS], and [xxxAER] ... 93
5.4
Summary of all Variables that can be fitted ................................................. 94
5.4.1 Molecules, cross sections and aerosols densities ................................... 94
5.4.2 Variables related to the Spectrum and its windows ............................... 94
6. (V)LIDORT description ....................................................................................... 96
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