Vernal Atmospheric Mixing in the Antarctic
| Autor: | Austin W. Hogan, T. Hare, K. Lieser, B. B. Murphey, T. Woodgates, J. Toman |
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| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | Journal of Applied Meteorology. 30:494-507 |
| ISSN: | 1520-0450 0894-8763 |
| DOI: | 10.1175/1520-0450(1991)030<0494:vamita>2.0.co;2 |
| Popis: | Aerosol concentration, ozone concentration, and meteorological parameters were measured at McMurdo and South Pole stations during a spring storm that reached the Antarctic interior. Nacreous clouds were sighted preceding the storm indicative of stratospheric flow from lower latitudes. These measurements and observations, along with upper-air and surface analyses indicate that vigorous tropospheric/stratospheric exchange of air occurs near 75°S during the spring. The elemental composition of collected aerosol changed coincidently with different stages of the storm. During the storm event in September 1983, surface ozone concentration varied from 20 to more than 100 ppbv at McMurdo, but remained less than 20 ppbv at the South Pole indicating that deep mixing, which occurred at the periphery of Antarctica during the spring storm, did not continue over the interior of the continent. The warm marine air associated with the spring coastal storm infiltrated the interior of Antarctica including the Polar... |
| Databáze: | OpenAIRE |
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