ISSN:
1573-0662
Keywords:
NO2
;
O3
;
SO2
;
intercomparison
;
differential optical absorption spectroscopy (DOAS)
;
troposphere
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Geosciences
Notes:
Abstract The results of an intercomparison campaign of eight different long path UV-visible DOAS instruments measuring NO2, O3 and SO2 concentrations in a moderately polluted urban site are presented. For effective optical path lengths of 230 and 780 m the overall spread of these measurements (±1σ) are 5×1010, 6×1010 and 1×1010 molec·cm-3 (2.0, 2.4, and 0.4 ppb) for these molecules respectively when all instruments used a common set of absorption cross sections. The remaining differences are not completely random and the systematic differences are attributed to the different retrieval methods used for each instrument.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00058704
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