====== initital setup for model comparison: V1.0 ======
Absorption: off
Mie scattering: off
**Geometry**
Coordinate system is topocentric at TOA (100 km)\\
Azim = phi(LOS)-phi(sun)\\
SZA: Solar Zenith angle\\
R_Earth: Earth radius computed from Latitude assuming r_x, r_y \\
TH: Tangent Height \\
LZA: LOS zenith angle\\
output altitude: 100 km
A) 5 SCIAMACHY observation geometries
SZA Azim R_Earth (! fixed !)
1 77.77 22.23 6370
2 47.30 34.41 6370
3 28.71 67.56 6370
4 26.84 96.47 6370
5 52.88 142.55 6370
B) Scan of solar zenith angles and rel azimuth
SZA 0 30 60 90
Azim 0 45 90 135 160
TH LZA
0 79.9133616
5 80.1693976
10 80.4322137
15 80.7023848
20 80.9805720
25 81.2675412
30 81.5641889
35 81.8715745
40 82.1909661
45 82.5239023
50 82.8722809
55 83.2384886
60 83.6255974
**Wavelength**
325
450
765.1
1700
**Albedo**: 0.0 (Lambertian)
**Pressure and temperature file name**
US Standard
http://www.iup.uni-bremen.de/~patty/RTM_COMP/PROFILES/US_STANDARD/usstandard.dat
**RAYLEIGH parameters** (! depol factor > 0 !)
Bodhaine(1999) with Refractive index from [Peck & Reeder, 1972]; weighted King factor includes N2,O2,Ar, and CO2
**scattering coefficients**
[[http://www.iup.uni-bremen.de/~patty/RTM_COMP/PROFILES/BODHAINE/|]] ray_coef*.dat
Format:
* 1st column = grid point [km] (starts at 100 km)
* 2nd column = volume scattering coefficient [1/km]
**Output format**
A) file name: [model]01_[wavelength]_az[azimuth]_V01.dat, e.g. \\
model = sciatran \\
01 = case for atmospheric setting, i.e., Rayleigh SS \\
wavelength = 324 450 765 1700 \\
azimuth = 22 35 68 96 143 \\
V01: version 01 \\
\\
example: sciatran01_325_az22_V01.dat \\
Format: 5 lines comment (start with '#') \\
13 Lines with: \\
TH [km] I [phot/sr/cm2/nm] per unit irrad. Q/I U/I V/I L_p=sqrt(Q/I^2+U/I^2) \\
B) file name: [model]01_[wavelength]_z[sza]_azscan_V01.dat, e.g. \\
sza = 0 30 60 90 \\
rest as above \\
example: sciatran01_325_z30_azscan_V01.dat \\
Format: 5 lines comment (start with '#') \\
13 Lines with: \\
TH [km] 5x I [phot/sr/cm2/nm] per unit irrad. Q/I U/I V/I L_p=sqrt(Q/I^2+U/I^2) \\
for azim = 0 45 90 135 160 \\
**All SCIATRAN output files** are in: \\
http://www.iup.uni-bremen.de/~patty/RTM_COMP/SCIATRAN/SS-Rayleigh/