An intercomparison of airborne nitric acid measurements
| Autor: | S. E. Van Bramer, R. M. Marinaro, Gerald L. Gregory, J. M. Hoell, B. J. Huebert, D. R. Karecki, D.R. Hastie, S. A. Vay, H. I. Schiff, Gervase I. Mackay, P. J. Lebel |
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| Rok vydání: | 1990 |
| Předmět: |
Atmospheric sounding
Atmospheric Science Ecology Meteorology Instrumentation Paleontology Soil Science Forestry Aquatic Science Oceanography Atmospheric sciences Troposphere chemistry.chemical_compound Geophysics chemistry Space and Planetary Science Geochemistry and Petrology Atmospheric chemistry Earth and Planetary Sciences (miscellaneous) Calibration Measuring instrument Mixing ratio Nitrogen dioxide Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Geophysical Research: Atmospheres. 95:10089-10102 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/jd095id07p10089 |
| Popis: | Results are reported on the performance of (1) denuder-tube/chemiluminescent, (2) nylon-filter/ion-chromatography, and (3) tunable-diode-laser/multipath-absorption HNO3 measurement instruments during the NASA Global Tropospheric Experiment Chemical Instrumentation Test and Evaluation 2 (CITE 2) program in summer 1986. The instrument designs, test protocols, and CITE 2 flights are described, and the results are presented in extensive graphs and discussed in detail. The data obtained with the three instruments are shown to be in very poor agreement at mixing ratios below 150 parts per trillion by volume (pptv), with significant discrepancies even at higher levels. Instrument (3) gave systematically higher values than (1) and (2). It is concluded that none of the instruments is accurate enough for reliable use at normal atmospheric HNO3 levels (around 100 pptv). |
| Databáze: | OpenAIRE |
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