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Research Articles
On the Use of Manned Hydrogen-Gas Ballooning in Boundary Layer Studies
Bernhard Rappenglück; Heinrich Reitmayer; Peter Fabian
Corresponding author:: Dr. Bernhard Rappenglück, Lehrstuhl für Bioklimatologie und Immissionsforschung, Technische Universität München, Am Hochanger 13, D-85354 Freising-Weihenstephan, Germany; e-mail: rappenglueck@met.forst.tu-muenchen.de
DOI: http://dx.doi.org/10.1065/espr2000.05.026 --- Measurements of nitrogen dioxide, ozone and, for the first time, on-line, nonmethane hydrocarbons with a quasi-continuous gaschromatographic/flame ionization technique were performed on a manned hydrogen-gas balloon platform. A cycle time of 10 min allowed the determination of nonmethane hydrocarbons in the carbon number range of C4-C10 with a detection limit of 10 pptv. In addition, meteorological parameters (atmospheric pressure, temperature, humidity) along with GPS-data (global positioning system) was accomplished during the balloon flights. Balloon measurements of trace compounds provide valuable information about photochemical processes in the boundary layer since gas ballooning offers the only technique that stays in the same air parcel along Langrangian trajectories. In addition, gas ballooning represents a unique tool to elucidate micrometeorological observations such as atmospheric stability oscillations and local wind fields. | | Keywords: Gas ballooning; hydrogen-gas ballooning; in situ measurements; Langrangian trajectories; nonmethane hydrocarbons; photochemical smog |
7 ESPR (4) 211-218 (2000)
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