The behavior of some organic nitrates at Boulder and Niwot Ridge, Colorado
| Autor: | Eric J. Williams, Hal Westberg, M. P. Buhr, Fred C. Fehsenfeld, R. B. Norton, J. D. Shetter, James Walega, Gerhard Hübler, David D. Parrish, E. J. Allwine, C. M. Elsworth, F. E. Grahek, Brian A. Ridley, Sasha Madronich |
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| Rok vydání: | 1990 |
| Předmět: |
Atmospheric Science
Soil Science chemistry.chemical_element Aquatic Science Oceanography Atmospheric sciences chemistry.chemical_compound Nitrate Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Mixing ratio Niwot Ridge Earth-Surface Processes Water Science and Technology Hydrology Peroxyacetyl nitrate Ecology Diurnal temperature variation Paleontology Forestry Nitrogen Geophysics chemistry Space and Planetary Science Atmospheric chemistry Environmental science Methyl nitrate |
| Zdroj: | Journal of Geophysical Research. 95:13949 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/jd095id09p13949 |
| Popis: | Observations show that the ratio of peroxypropionyl nitrate (PPN) to peroxyacetyl nitrate (PAN) increases to a maximum in the afternoon period at Boulder and at Niwot Ridge. In Boulder air and in easterly flow reaching Niwot Ridge, maximum average PPN/PAN ratios were near 15%, while in westerly flow or more remote continental air, the ratio was much smaller and averaged 4%. Relative to the PAN-mixing ratios, methyl nitrate (MN) was less than 0.2% in the afternoon and less than 0.9% at night in Boulder air masses. The sum of ambient n-propyl nitrate (NPN) and 2-butyl nitrate (2BN) mixing ratios was also small, the diurnal average at Niwot Ridge being about 2% of the PAN-mixing ratio. The diurnal average contribution of MN + PPN + (NPN+2BN) to the total odd nitrogen budget at Niwot Ridge was at most 4%, leaving a 21-27% shortfall between the sum of individual measurements of odd nitrogen species and the total odd nitrogen (NO{sub y}) measurement. |
| Databáze: | OpenAIRE |
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