1 Institute for Environmental Physics and Remote Sensing (IUP/ife) Physics/Electrical Engineeri K.-U. Eichmann , C. von Savigny, G. Rohen, J. Kaiser, H. Bovensmann, J.P. Burrows First retrieval of NIR CH4 profiles from SCIAMACHY measurements? Institute of Environmental Physics University of Bremen Germany
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Institute for Environmental Physics and Remote Sensing (IUP/ife) Physics/Electrical Engineering 1 K.-U. Eichmann, C. von Savigny, G. Rohen, J. Kaiser,
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Institute for Environmental Physics and Remote Sensing (IUP/ife) Physics/Electrical Engineering
K.-U. Eichmann, C. von Savigny, G. Rohen, J. Kaiser, H. Bovensmann, J.P. Burrows
First retrieval of NIR CH4 profiles from SCIAMACHY measurements?
Institute of Environmental PhysicsUniversity of Bremen
Germany
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Institute for Environmental Physics and Remote Sensing (IUP/ife) Physics/Electrical Engineering
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Institute for Environmental Physics and Remote Sensing (IUP/ife) Physics/Electrical Engineering
• vertical resolution: 2.6 km• horizontal resolution in
azimuth direction: 240 km (120 km min.)
• horizontal resolution in flight direction: approx. 400 km
• Duration of Limb sequence: 60 sec.
SCIAMACHY Limb Measurements
Limb view for SOLSE/LORE instruments
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Institute for Environmental Physics and Remote Sensing (IUP/ife) Physics/Electrical Engineering
Requirements UV-VIS-SWIR RTM Limb
SCIATRAN/CDIPI
(A. Rozanov 2001)
SCIARAYs
(Kaiser 2001)
Refraction
Full Sphericity
Multiple Scattering (double scattering)
Ground Reflection
Rayleigh, Mie-Scattering
Analytical Weighting Functions
(In progress)
Computational fast for global analysis of data
Occultation included
Modelling the Radiative Transfer
SCIARAYS: LBL mode, SFC included
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Institute for Environmental Physics and Remote Sensing (IUP/ife) Physics/Electrical Engineering
Optimal Estimation
x0: ln of the a priori O3 profile xn: ln of the nth estimatey: ln of the measured Chappuis-Triplettsyn: ln of the modelled Chappuis-Tripletts for xn
Sx: covariance matrix of the a priori S: covariance matrix of yK: Weighting function matrix
n3
mcmn zOln
THlnyK
yn and K will be determined by the radiative transfer model SCIARAYS [Kaiser, 2001]
xn+1 = x0 + SxKnT[KnSxKn
T + S] -1 (y - yn - Kn(x0-xn))
S = Sx - SxKT[KSxKT + S]-1 KSx
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Institute for Environmental Physics and Remote Sensing (IUP/ife) Physics/Electrical Engineering