© University of Reading 2008 www.reading.ac.uk

Department of Meteorology

Deriving the Extraterrestria

l Solar Spectrum

Kaah Menang, Liam Tallis , Igor Ptashnik and Keith Shine.

CAVIAR Field Meeting, Reading University (6 December2010)

Update on Filtering and Derived Spectra

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Three Methods of filtering:• Using Optical Depths• Using RMSE of the fit• Using air mass and irradiances

CAVIAR Field Meeting, Reading University (6 December2010)

Filtering(Camborne)

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CAVIAR Field Meeting, Reading University (6 December2010)

Filtering(Using OD)

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CAVIAR Field Meeting, Reading University (6 December2010)

Filtering(Using RMSE)

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CAVIAR Field Meeting, Reading University (6 December2010)

Filtering(Using AM and I)

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CAVIAR Field Meeting, Reading University (6 December2010)

Derived(filtered) OD/spectrum for 22/08/2008

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CAVIAR Field Meeting, Reading University (6 December2010)

Derived(filtered) spectrum(Cam/Kurucz)

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CAVIAR Field Meeting, Reading University (6 December2010)

Derived(filtered) spectrum(Cam/Kurucz)

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CAVIAR Field Meeting, Reading University (6 December2010)

Derived(filtered) spectrum(Cam/Jung/Kurucz)

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CAVIAR Field Meeting, Reading University (6 December2010)

Derived(filtered) spectrum(Cam/Jung/Kurucz)

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CAVIAR Field Meeting, Reading University (6 December2010)

Langley plots

22/08/2008 18/09/2008

CAVIAR Field Meeting, Reading University (6 December2010)

Langley plots

22/08/2008 18/09/2008

CAVIAR Field Meeting, Reading University (6 December2010)

Langley plots

22/08/2008 18/09/2008

CAVIAR Field Meeting, Reading University (6 December2010)

RMSE plots

22/08/2008 18/09/2008

CAVIAR Field Meeting, Reading University (6 December2010)

Discussion/Future Work• Derived TOA solar spectrum different for 2 days

in Camborne.• Derived TOA solar spectrum from Camborne

very different from that of Jungfraujoch

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