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--- user_area:fluorescence_explorer_flex [2013/10/15 10:29]
arve
+++ user_area:fluorescence_explorer_flex [2013/10/15 12:03]
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@@ Line 143: / Line 143: @@
   mol_tau_file abs ./UVSPEC_FLUORESCENCE_arts-640-810.nc
+===== Atmosphere =====
+The atmosphere density file must contain the same information for both
+arts and uvspec. That is, the same molecular gas densities at the same
+vertical resolution. Arts have several atmospheric models in the
+''arts-xml-data/atmosphere'' directory. Here we use the  mid-latitude
+summer atmosphere model.
+  atmosphere_file ./afglms_95.dat
+===== Surface input =====
+For the surface the surface albedo and the flourescence must be
+specified. We use spectral data from the ESA-FLUSS project((see  also Miller,
+J. R., Berger, M., Goulas, Y., Jacquemond, S., Lous, J., Moise, N.,
+Mohammed, G., Moreno, J., Moya, I., Pedrós, R., Verhoef, W., and
+Zarco-Tejada, P. J.: Development of a Vegetation Fluorescence Canopy
+Model, Final Report, Tech. rep., ESTEC Contract No. 16365/NL/FF,
+.)) The following parameters were used: Chlorophyll a and
+b 40; Stoichiometry 1; Fluorescence 0.02; Relative azimuth angle 40;
+Viewing zenith angle 41.4; Leaf are index 3; Soil-type code 2; Solar
+zenith angle 30.
+  fluorescence_file ./UVSPEC_FLUORESCENCE.FLU_ph
+  albedo_file ./UVSPEC_FLUORESCENCE.TOC
+===== Geometry =====
+The solar zenith angle must be specified. This should equal the solar
+zenith angle used to calculate the fluorescence and surface albedo
+spectra.
+  sza 30.0
+Furthermore we assume the instrument is nadir viewing and of course is
+at TOA.
+  umu 1     # Looking down
+  zout toa  # top of atmosphere