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Observation of sensible and latent heat flux profiles with lidar

Behrendt, Andreas; Wulfmeyer, Volker; Senff, Christoph; Muppa, Shravan Kumar; Späth, Florian; Lange, Diego; Kalthoff, Norbert; Wieser, Andreas

Abstract:
We present the first measurement of the sensible heat flux (H) profile in the convective boundary layer (CBL) derived from the covariance of collocated vertical-pointing temperature rotational Raman lidar and Doppler wind lidar measurements. The uncertainties of the H measurements due to instrumental noise and limited sampling are also derived and discussed. Simultaneous measurements of the latent heat flux profile (L) and other turbulent variables were obtained with the combination of water-vapor differential absorption lidar (WVDIAL) and Doppler lidar. The case study uses a measurement example from the HOPE (HD(CP)$^{2}$ Observational Prototype Experiment) campaign, which took place in western Germany in 2013 and presents a cloud-free well-developed quasi-stationary CBL. The mean boundary layer height z$_{i}$ was at 1230 m above ground level. The results show – as expected – positive values of H in the middle of the CBL. A maximum of (182±32) W m$^{-2}$, with the second number for the noise uncertainty, is found at 0.5 z$_{i}$. At about 0.7 z$_{i}$, H changes sign to negative values above. The entrainment flux was (−62±27) W m$^{-2}$. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000120354
Veröffentlicht am 22.06.2020
Originalveröffentlichung
DOI: 10.5194/amt-13-3221-2020
Web of Science
Zitationen: 1
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1867-8548
KITopen-ID: 1000120354
HGF-Programm 12.01.02 (POF III, LK 01) Proc.res.f.multisc.predictab.of weather
Erschienen in Atmospheric measurement techniques
Verlag Copernicus Publications
Band 13
Heft 6
Seiten 3221–3233
Vorab online veröffentlicht am 18.06.2020
Nachgewiesen in Web of Science
Dimensions
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