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Copyright Copernicus GmbH 2011

Abstract

A new method for measuring air temperature profiles in the atmospheric boundary layer at high spatial and temporal resolution is presented. The measurements are based on Raman scattering distributed temperature sensing (DTS) with a fiber optic cable attached to a tethered balloon. These data were used to estimate the height of the stable nocturnal boundary layer. The experiment was successfully deployed during a two-day campaign in September 2009, providing evidence that DTS is well suited for this atmospheric application. Observed stable temperature profiles exhibit an exponential shape confirming similarity concepts of the temperature inversion close to the surface. The atmospheric mixing height (MH) was estimated to vary between 5 m and 50 m as a result of the nocturnal boundary layer evolution. This value is in good agreement with the MH derived from concurrent Radon-222 (222 Rn) measurements and in previous studies.

Details

Title
Fiber optic distributed temperature sensing for the determination of the nocturnal atmospheric boundary layer height
Author
Keller, C. A.; Huwald, H.; Vollmer, M. K.; Wenger, A.; Hill, M.; Parlange, M. B.; Reimann, S.
First page
143
Publication year
2011
Publication date
2011
Publisher
Copernicus GmbH
ISSN
18671381
e-ISSN
18678548
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
854991881
Copyright
Copyright Copernicus GmbH 2011