| Автор | Mankin, William G. |
| Автор | Coffey, M. T. |
| Автор | Goldman, Aaron |
| Автор | Schoeberl, Mark R. |
| Автор | Lait, Leslie R. |
| Автор | Newman, Paul A. |
| Дата выпуска | 1990 |
| dc.description | We have used a Fourier transform spectrometer aboard the NASA DC‐8 aircraft during the Airborne Arctic Stratospheric Expedition (AASE) to record infrared absorption spectra of the polar stratosphere. From these high resolution spectra we have derived vertical column amounts above flight altitude of O<sub>3</sub>, CH<sub>4</sub>, N<sub>2</sub>O, H<sub>2</sub>O, HCl, HF, NO, NO<sub>2</sub>, ClONO<sub>2</sub>, and HNO<sub>3</sub> for eleven flights poleward of 60°N. We report here measurements on the flight of 26 January 1989 when the flight path during the observations crossed from outside the polar vortex to inside. This allowed a clear comparison of the conditions of the air within the vortex with that outside. Observations of passive tracers such as CH<sub>4</sub> and HF indicate that air of a certain composition within the polar vortex occurs at lower altitude than air outside. Within the vortex, we observed markedly reduced columns of HCl and NO<sub>2</sub>. The ratio of HCl to HF column dropped from its typical nidlatitude value of 4.5 to as low as 1.7 within the vortex, implying that the HCl had been chemically or physically removed from the air in the vortex. NO<sub>2</sub> values within the vortex were near 3.0×10<sup>14</sup> molecules‐cm<sup>−2</sup>, about a factor of two less than columns outside. In contrast to the Antarctic observations, HNO<sub>3</sub> values were elevated within the vortex. HNO<sub>3</sub> columns inside the vortex reached values of 30×10<sup>15</sup> molecules‐cm<sup>−2</sup>. The ClONO<sub>2</sub> column was largest within the vortex, peaking at 4×l0<sup>15</sup> molecules‐cm<sup>−2</sup> near the boundary of the vortex, and decreasing farther into the vortex. |
| Формат | application.pdf |
| Копирайт | Copyright 1990 by the American Geophysical Union. |
| Тема | Airborne Arctic Stratospheric Expedition |
| Тема | Atmospheric Composition and Structure |
| Тема | Atmospheric Composition and Structure: Instruments and techniques |
| Тема | Atmospheric Composition and Structure: Geochemical cycles |
| Тема | Atmospheric Composition and Structure: Cloud physics and chemistry |
| Тема | Atmospheric Composition and Structure: Middle atmosphere—composition and chemistry |
| Тема | Atmospheric Composition and Structure: Transmission and scattering of radiation |
| Тема | Atmospheric Processes |
| Тема | Meteorology and Atmospheric Dynamics: Middle atmosphere dynamics |
| Тема | Geographic Location |
| Тема | Information Related to Geographic Region: Arctic region |
| Название | Airborne measurements of stratospheric constituents over the Arctic in the winter of 1989 |
| Тип | article |
| DOI | 10.1029/GL017i004p00473 |
| Electronic ISSN | 1944-8007 |
| Print ISSN | 0094-8276 |
| Журнал | Geophysical Research Letters |
| Том | 17 |
| Первая страница | 473 |
| Последняя страница | 476 |
| Аффилиация | Mankin, William G.; National Center for Atmospheric Research, Boulder, Colorado |
| Аффилиация | Coffey, M. T.; National Center for Atmospheric Research, Boulder, Colorado |
| Аффилиация | Goldman, Aaron; National Center for Atmospheric Research, Boulder, Colorado |
| Аффилиация | Schoeberl, Mark R.; NASA Goddard Space Flight Center, Greenbelt, Maryland |
| Аффилиация | Lait, Leslie R.; NASA Goddard Space Flight Center, Greenbelt, Maryland |
| Аффилиация | Newman, Paul A.; NASA Goddard Space Flight Center, Greenbelt, Maryland |
| Выпуск | 4 |
| Библиографическая ссылка | Anderson, J. G.W. H.BruneM. H.Proffitt, Ozone destruction by chlorine radicals within the Antarctic vortex: The spatial and temporal evolution of ClO–O3 anticorrelation based on in situ ER‐2 data, J. Geophys Res., 94, 11465–11479, 1989 |
| Библиографическая ссылка | Brune, W. H.D. W.TooheyJ. G.AndersonK. R.Chan, In situ observations of ClO in the Arctic stratosphere: ER‐2 aircraft results from 59°N to 80°H Latitude, this issue Geophys. Res. Letters, 1990 |
| Библиографическая ссылка | Coffey, M. T.William G.MankinA.Goldman, Simultaneous spectroscopic determination of tie latitudinal, seasonal, and diurnal variability of stratospheric N2O, NO, NO2, and HNO3, J. Geophys. Res., 86, 7331–7341, 1981 |
| Библиографическая ссылка | Coffey, M. T.William G.MankinA.Goldman, Airborne measurements of stratospheric constituents over Antarctica in the austral spring 1987: 2. Halogen and nitrogen trace gases, J. Geophys. Res., 94, 16597–16613, 1989 |
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| Библиографическая ссылка | Murcray, F. J., Infrared measurements of several nitrogen species above the south pole in December 1980 and November–December 1986, J. Geophys. Res., 92, 13373–13376, 1987 |
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| Библиографическая ссылка | WMO, Atmospheric Ozone 1985, WMO Global Ozone Research and Monitoring Project Report No. 16, 1985 |
| Библиографическая ссылка | Wofsy, Steven C., Heterogeneous conversion of COF2 to HF in polar stratospheric clouds, this issue Geophys. Res. Letters, 1990 |
