Aircraft studies of size-dependent aerosol sampling through inlets
| Autor: | J. N. Porter, G. Ferry, Antony D. Clarke, Rudolf F. Pueschel |
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| Rok vydání: | 1992 |
| Předmět: |
Atmospheric Science
geography geography.geographical_feature_category Ecology Backscatter Meteorology Instrumentation Nozzle Paleontology Soil Science Sampling (statistics) Forestry Aquatic Science Oceanography Inlet Aerosol Geophysics Space and Planetary Science Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Calibration Environmental science Particle counter Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Geophysical Research. 97:3815 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/91jd02886 |
| Popis: | Representative measurement of aerosol from aircraft-aspirated systems requires special efforts in order to maintain near isokinetic sampling conditions, estimate aerosol losses in the sample system, and obtain a measurement of sufficient duration to be statistically significant for all sizes of interest. This last point is especially critical for aircraft measurements which typically require fast response times while sampling in clean remote regions. This paper presents size-resolved tests, intercomparisons, and analysis of aerosol inlet performance as determined by a custom laser optical particle counter. Measurements discussed here took place during the Global Backscatter Experiment (1988-1989) and the Central Pacific Atmospheric Chemistry Experiment (1988). System configurations are discussed including (1) nozzle design and performance, (2) system transmission efficiency, (3) nonadiabatic effects in the sample line and its effect on the sample-line relative humidity, and (4) the use and calibration of a virtual impactor. |
| Databáze: | OpenAIRE |
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