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Long-term observations of the urban mixing-layer height with ceilometers

Emeis, Stefan; Schäfer, Klaus; Münkel, Christoph

Abstract:
Urban air quality assessment requires the knowledge of the temporal and spatial structure of the mixing-layer height (MLH), because this variable controls the vertical space for rapid mixing of near-surface pollutants. Because MLH is a consequence of vertical temperature and moisture profiles in the lower atmosphere, remote sensing is a suitable tool to monitor MLH. Two ceilometers, a Vaisala LD40 and a Vaisala CL31, have been run for many months in the German city of Augsburg to observe the vertical aerosol distribution. Wind and temperature profile information have been obtained for the same period from sodar observations. This paper compares the MLH determined from the optical backscatter intensity received by the two ceilometers among each other and with the MLH derived from the acoustic backscatter intensity and the variance of the vertical wind component from sodar measurements.

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Verlagsausgabe §
DOI: 10.5445/IR/120071691
Veröffentlicht am 26.10.2020
Originalveröffentlichung
DOI: 10.1088/1755-1315/1/1/012027
Dimensions
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2008
Sprache Englisch
Identifikator ISSN: 1755-1307, 1755-1315
KITopen-ID: 120071691
HGF-Programm 12.02.03 (POF I, LK 01) Luftreinhaltung und Wassermanagement
Erschienen in IOP conference series / Earth and environmental science
Verlag IOP Publishing
Band 1
Seiten 012027/1-9
Nachgewiesen in Dimensions
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