2007
DOI: 10.5194/acpd-7-11545-2007
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Weekly periodicities of aerosol optical thickness over Central Europe – evidence of an anthropogenic direct aerosol effect

Abstract: Abstract. Statistical analyses of data from 14 ground-based sun photometer stations all over Central Europe are presented. All stations are part of the Aerosol Robotic Network (AERONET), and only data of the highest data quality level 2.0 had been applied. The averages by weekday of aerosol optical thickness (AOT) at a wavelength of 440 nm of 12 of the 14 stations show a weekly periodicity with lowest values on Sunday and Monday, but greatest values from Wednesday until Saturday, that is significant at least o… Show more

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Cited by 18 publications
(25 citation statements)
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“…We hypothesized (see BV) that there could be an interaction of a weekly aerosol cycle and the atmospheric dynamics in Germany, which could explain such a widespread weekly temperature cycle. In the meantime, we could demonstrate the existence of a significant weekly cycle of the aerosol optical thickness over Germany and adjacent areas [ Bäumer et al , 2008] which supports our hypothesis. On other continents, for instance, a systematic pattern of weekday‐weekend differences of the daily temperature range could be found.…”
supporting
confidence: 78%
“…We hypothesized (see BV) that there could be an interaction of a weekly aerosol cycle and the atmospheric dynamics in Germany, which could explain such a widespread weekly temperature cycle. In the meantime, we could demonstrate the existence of a significant weekly cycle of the aerosol optical thickness over Germany and adjacent areas [ Bäumer et al , 2008] which supports our hypothesis. On other continents, for instance, a systematic pattern of weekday‐weekend differences of the daily temperature range could be found.…”
supporting
confidence: 78%
“…Jin et al (2005) used satellite data to discern a midweek maximum in aerosol optical thickness near New York City. Bäumer et al (2008) examined aerosol optical thickness over Europe. Delene and Ogren (2002) found slightly higher single scattering albedos on Sundays and Mondays at Bondville, Illinois…”
Section: Introductionmentioning
confidence: 99%
“…In contrast, Friday yields the highest value (+11.2%), probably associated with the accumulation of particulate matter within the atmospheric boundary layer during the working days. A more comprehensive view of the weekly aerosol cycle on both the continental and global scales is proposed by Bäumer et al [2008] and Xia et al [2008], respectively.…”
Section: Resultsmentioning
confidence: 99%