NUMERICAL-ANALYSIS AND ESTIMATION OF THE STATISTICAL ERROR OF DIFFERENTIAL OPTICAL-ABSORPTION SPECTROSCOPY MEASUREMENTS WITH LEAST-SQUARES METHODS

Authors
Citation
J. Stutz et U. Platt, NUMERICAL-ANALYSIS AND ESTIMATION OF THE STATISTICAL ERROR OF DIFFERENTIAL OPTICAL-ABSORPTION SPECTROSCOPY MEASUREMENTS WITH LEAST-SQUARES METHODS, Applied optics, 35(30), 1996, pp. 6041-6053
Citations number
24
Categorie Soggetti
Optics
Journal title
ISSN journal
00036935
Volume
35
Issue
30
Year of publication
1996
Pages
6041 - 6053
Database
ISI
SICI code
0003-6935(1996)35:30<6041:NAEOTS>2.0.ZU;2-S
Abstract
Differential optical absorption spectroscopy (DOAS) has become a widel y used method to measure trace gases in the atmosphere. Their concentr ation is retrieved by a numerical analysis of the atmospheric absorpti on spectra, which often are a combination of overlapping absorption st ructures of several trace gases. A new analysis procedure was develope d, modeling atmospheric spectra with the absorption structures of the individual trace gases, to determine their concentrations. The procedu re also corrects differences in the wavelength-pixel mapping of these spectra. A new method to estimate the error of the concentrations cons iders the uncertainty of this correction and the influence of random r esidual structures in the absorption spectra. (C) 1996 Optical Society of America