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Performance of the ground-based total ozone network assessed using satellite data
Title: Performance of the ground-based total ozone network assessed using satellite data
Authors: Fioletov, VitaliLabow, GordonEvans, RobertHare, Edward W.Köhler, UlfMcElroy, Charles ThomasMiyagawa, KojiRedondas, Alberto ORCID RESEARCHERID Autor AEMETSavastiouk, VladimirShalamyansky, Arkady M.Staehelin, JohannesVanicek, KarelWeber, Mark
Keywords: Brewer spectrophotometer; Dobson spectrophotometers; Ozone measurements; Satellite data
Issue Date: 2008
Publisher: American Geophysical Union
Citation: Journal of Geophysical Research: Atmospheres. 2008, 113(D14)
Publisher version:
Abstract: Dobson and Brewer spectrophotometer and filter ozonometer data available from the World Ozone and Ultraviolet Data Centre (WOUDC) were compared with satellite total ozone measurements from TOMS (onboard Nimbus 7, Meteor 3, and Earth Probe satellites), OMI (AURA satellite) and GOME (ERS-2 satellite) instruments. Five characteristics of the difference with satellite data were calculated for each site and instrument type: the mean difference, the standard deviation of daily differences, the standard deviation of monthly differences, the amplitude of the seasonal component of the difference, and the range of annual values. All these characteristics were calculated for five 5-year-long bins and for each site separately for direct sun (DS) and zenith sky (ZS) ozone measurements. The main percentiles were estimated for the five characteristics of the difference and then used to establish criteria for “suspect” or “outlier” sites for each characteristic. About 61% of Dobson, 46% of Brewer, and 28% of filter stations located between 60°S and 60°N have no “suspect” or “outlier” characteristics. In nearly 90% of all cases, Dobson and Brewer sites demonstrated 5-year mean differences with satellites to be within ±3% (for DS observations). The seasonal median difference between all Brewer DS measurements at 25°–60°N and GOME and OMI overpasses remained within ±0.5% over a period of more than 10 years (...)
ISSN: 2169-897X
Appears in Collections:Artículos científicos 2005-2009

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