Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis
作者： S. D. Eckermann , L. Hoffmann , M. Höpfner , D. L. Wu , M. J. Alexander
DOI: 10.1029/2008GL036629
关键词: Stratosphere 、 Polar 、 Atmospheric sciences 、 Wake 、 Amplitude 、 Geology 、 Vortex 、 Radiance 、 Polar meteorology 、 Atmospheric Infrared Sounder
摘要: Abstract : Satellite observations of polar stratospheric clouds (PSCs) over Antarctica in June 2003 revealed small nitric acid trihydrate (NAT) particles forming suddenly along the vortex edge. Models suggest trigger was mountain waves Antarctic Peninsula (AP) ice for NAT nucleation. We test this hypothesis by analyzing perturbations radiances from Atmospheric Infrared Sounder (AIRS). AIRS data show AP on 10-14 June, with no resolved wave activity before or after. Peak temperature amplitudes derived independent 40 hPa channels all return values 10-12 K, agreement used to model event. These support a wake region as source circumpolar outbreak.
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