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| Titel |
The Spectral Aerosol Extinction Monitoring System (SǼMS): setup, observational products, and comparisons |
| VerfasserIn |
A. Skupin, A. Ansmann, R. Engelmann, H. Baars, T. Müller |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 7, no. 3 ; Nr. 7, no. 3 (2014-03-04), S.701-712 |
| Datensatznummer |
250115642
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| Publikation (Nr.) |
 copernicus.org/amt-7-701-2014.pdf |
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| Zusammenfassung |
| The Spectral Aerosol Extinction Monitoring System (SǼMS) is presented
that allows us to continuously measure the spectral extinction coefficient of
atmospheric aerosol particles along an approximately 2.7 km long optical
path at 30–50 m height above ground in Leipzig (51.3° N,
12.4° E), Germany. The fully automated instrument measures the
ambient aerosol extinction coefficients from 300 to 1000 nm. The main goal
of SǼMS observations are long-term studies of the relationship between
particle extinction and relative humidity from below 40% to almost
100%. The setup is presented and observations (a case study and
statistical results for 2009) are discussed in terms of time series of
550 nm particle optical depth, Ångström exponent, and particle size
distribution retrieved from the spectrally resolved extinction. The SǼMS
measurements are compared with simultaneously performed EARLINET (European
Aerosol Research Lidar Network) lidar, AERONET (Aerosol Robotic Network) sun
photometer, and in situ aerosol observations of particle size distribution
and related extinction coefficients on the roof of our institute. Consistency
between the different measurements is found, which corroborates the quality
of the SǼMS observations. Statistical results of a period of 1 yr (2009)
show mode extinction values of 0.09 km−1 (SǼMS), 0.075 km−1
(AERONET), and 0.03 km−1 (in situ). Ångström exponents for this
period are 0.19 (390–880 nm, SǼMS) and 1.55 (440–870 nm, AERONET). |
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