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Direct measurement of turbulent particle exchange with a twin CPC eddy covariance system

Title data

Held, Andreas ; Klemm, Otto:
Direct measurement of turbulent particle exchange with a twin CPC eddy covariance system.
In: Atmospheric Environment. Vol. 40 (2006) Issue Suppl. 1 . - pp. 92-102.
ISSN 1352-2310
DOI: https://doi.org/10.1016/j.atmosenv.2005.09.092

Abstract in another language

Direct measurements of particle number fluxes by eddy covariance (EC) were carried out in the years 2001 and 2002 during the BEWA2000 field experiments. An EC system combining a sonic anemometer and two condensation particle counters was set up and successfully applied above a Norway spruce forest in NE Bavaria, Germany. Particle deposition clearly dominated over emission, with the strongest deposition fluxes occurring during particle formation events identified from submicron particle size distributions. Typical deposition velocities derived from these measurements ranged from −37 to +23 mm s−1. The ultrafine particle fraction (UFP) (3–11 nm diameter) showed different concentration patterns and larger deposition velocities as compared to the particle fraction with larger diameters. Also, pary ticle deposition occurring before noon could be attributed mainlto the UFP, whereas larger particles contributed to turbulent deposition in the afternoon.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER43796
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Professorship Micrometeorology - Univ.-Prof. Dr. Thomas Foken
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Atmospheric Chemistry
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 11 Sep 2015 06:33
Last Modified: 11 Sep 2015 06:33
URI: https://eref.uni-bayreuth.de/id/eprint/19166