Iodine Monoxide and the Relations to Sea Ice - Congrex
Iodine Monoxide and the Relations to Sea Ice - Congrex
Iodine Monoxide and the Relations to Sea Ice - Congrex
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IO retrieval by Differential Optical Absorption Spectroscopy<br />
I 0<br />
I<br />
� I0<br />
( �)<br />
�<br />
k<br />
ln�� � �i<br />
( s)<br />
� i '(<br />
�,<br />
s)<br />
ds � ak�<br />
� r(<br />
�)<br />
I(<br />
�)<br />
�� �� �<br />
� � S i<br />
k<br />
Retrieval settings<br />
• Spectral range: 416 – 430 nm<br />
Anja.Schoenhardt@iup.physik.uni-bremen.de<br />
absorption term:<br />
• trace gases<br />
• Ring effect<br />
• Trace gases: IO, NO 2 (223K), O 3 (223K)<br />
• Ring effect, quadratic polynomial<br />
• Earthshine reference spectrum I 0<br />
polynomial:<br />
broad-b<strong>and</strong><br />
effects<br />
Result: Slant Column � i<br />
residual<br />
SC � � ( s)<br />
ds<br />
SOLAS-ESA-EGU conference<br />
Frascati, 29 Nov – 2 Dec 2011<br />
S<br />
i<br />
fitting<br />
window<br />
8
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