1 Status of the LBLRTM Forward Model for Passive Remote Sensing Mark Shephard, Vivienne Payne, Karen Cady-Pereira and Tony Clough Workshop on Advanced High Spectral Resolution Infrared Observations University of Wisconsin 26-28 April 2006 QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture.
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Status of the LBLRTM Forward Model for Passive Remote Sensing
Mark Shephard, Vivienne Payne, Karen Cady-Pereira andTony Clough
Workshop on Advanced High Spectral Resolution Infrared ObservationsUniversity of Wisconsin
26-28 April 2006
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
2
Topics
• Status of LBLRTM Analytic Jacobian• Temperature and Emissivity of the Surface• Temperature Profiles• Species Profiles• Upwelling/Downwelling
• Status of LBLRTM for Passive Remote Sensing• Temperature• Retrieval of Spectroscopic Parameters from
High Resolution Spectral Observations• SHIS,TES, AIRS, AERI
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Temperature Jacobians: Level 8Emissivity = 0.9999Reflectivity = 0.0001
Chi function: The spectral function by which theLorentz line shape (impact) must be multiplied to obtain the “true” line shape.Sub-Lorentzian chi function accounts for the duration of collision effects.
0.0
0.2
0.4
0.6
0.8
1.0
0 5 10 15 20 25
Chi
Fun
ctio
n
Wavenumbers from Line Center (cm-1)
Clough et al., 1978Cousin (a) N2 296KCousin (c) N2 238KChi_LBLRTM_v_8
LBLRTM Chi Function for CarbonDioxide
impact
Continuum: Line contributions 25 cm-1
beyond line center
Lorentz (impact)lblrtm_v6.01
lblrtm_v8.2
CO2 Continuum
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Perturbations to line intensities/widths: 3 2 band
a0
a1
a2
b1
Reference spectrum
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Perturbations to line intensities/widths: 2 1 band
a0
b1
a1
a2
Reference spectrum
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Perturbations to line intensities/widths: 4 2 band
a0
b1
a2
a1
Reference spectrum
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Perturbations to line intensities/widths: 5 2 band
Reference spectrum
a1
a0
a2
b1
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Perturbations to line intensities/widths: 6 3 band
a0
b1
a2
a1
Reference spectrum
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Perturbations to line intensities/widths: 7 4 band
a0
b1
a2
a1
Reference spectrum
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Perturbations to line intensities/widths: 8 5 band
a0
b1
a2
a1
Reference spectrum
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Perturbations to line intensities/widths: 8 4 band
a0
b1
a2
a1
Reference spectrum
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Averaging Kernels
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Correlation matrix (H-1)
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LBLRTM Validation : TES CO2 v2 Filter
TES Obs.
TES - LBLRTM
TES(SHIS ILS) - LBLRTM
SHIS - LBLRTM
CO2 v2
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SHIS AVE CO2 Width and Intensity Retrieval Results