Ground-based measurements of column amounts of NO{sub 2} over Syowa Station, Antarctica
- Nagoya Univ., Toyokawa (Japan)
- National Institute of Water and Atmospheric Research, Lauder (New Zealand)
- National Oceanic and Atmospheric Administration, Boulder, CO (United States)
- Meteorological Research Institute, Tsukuba (Japan)
The authors interpret column measurements of NO{sub 2} made from Syowa Station, Antarctica since March, 1990. It is lowest in midwinter, and peaks in midsummer. The fall rate of decrease is considerably greater than the spring increase rate. Temperature trends indicate that late winter polar stratospheric clouds could form, providing an explanation for low NO{sub 2} abundances. They have used a box model to simulate the observed density variations. Increasing amounts of aerosols from the eruption of Pinatubo probably account for lower NO{sub 2} densities in late spring of 1991. Effects due to the atmospheric aerosol loading are seen to extend into 1992, and also during 1992 the vortex boundary was located differently with respect to the observation station.
- OSTI ID:
- 86399
- Journal Information:
- Journal of Geophysical Research, Vol. 99, Issue D7; Other Information: PBD: 20 Jul 1994
- Country of Publication:
- United States
- Language:
- English
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