Robust local polynomial regression and statisticalevaluation
نویسندگان
چکیده
This paper deals with an absorption spectroscopic method for trace gas measurements called DOAS (Diierential Optical Absorption Spectroscopy) from a statistical point of view. The DOAS technique is an absorption spectrosco-pic technique to measure trace gas concentrations. It is capable of detecting and measuring a number of important trace gases at tropospheric concentration levels by observing their structured light absorption features. We study the evaluation procedure and discuss the eeects of estimating the slowly varying absorption component using robust local polynomial regression. Recent measurements with overlapping SO 2 and O 3 absorption are studied.
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