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CAVIAR Meeting
May 2010
Liam Tallis, Keith Shine, Tom Gardiner, Marc Coleman, Igor Ptashnik
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Contents
• Assessment of H2O Line Intensities– Camborne– Jungfraujoch
• Moving Toward the Absolute Calibration– Camborne
• Future Work
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ASSESSMENT OF H2O LINE INTENSITIES
Introduction
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Introduction
a τw + b τg + c
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ASSESSMENT OF H2O LINE INTENSITIES
Camborne
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Retrieved “a” parametera = 1.02 +/- 0.03
a = 1.20 +/- 0.04a = 1.01 +/- 0.06
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Camborne: Retrieved ‘a’
Spectral Region (cm-1) Retrieved ‘a’
3000 – 8000 0.97 +/- 0.02
8000 – 9200 1.17 +/- 0.05
10000 - 14000 0.98 +/- 0.07
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Retrieved “a” against Pseudo Strength
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Retrieved “a” against Pseudo Strength
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MCT Problems
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MCT Problems
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MCT Problems
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MCT Problems
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Fit Wings of Strong Lines
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Fit All of Weaker Lines
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Retrieved “a” parameter
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MCT Retrieved “a” Numbers
Flight Date Time (U.T.)Solar Zenith Angle
Average a Value Between 820cm-1 and 920cm-1
B396 19 Aug 2008 130941 38.77 0.976131243 38.92 0.979
B400 18 Sep 2008 111459 48.98 1.025
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ASSESSMENT OF H2O LINE INTENSITIES
Jungfraujoch
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Retrieved “a” parametera = 1.00 +/- 0.04
a = 1.17 +/- 0.04a = 0.99 +/- 0.05
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Retrieved “a” parameter
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ABSOLUTE CALIBRATION
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Absolute Calibration
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FUTURE WORK
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Future Work• Assessment of Line Intensities
– Camborne • Completed; retrieved “a” are consistent with previous work at Reading
– Jungfraujoch• Work has began; will be fairly quick with confirmed water profiles. Initial
results are quite promising to moving closer to band centres
• Absolute Calibration– Camborne
• On going work; need to think in some detail now what is causing difference between model and observations (line lists, continuum model, Kurucz , water profiles.........)
– Jungfraujoch• Calibration data now available; work to begin after Camborne