MLS observations of ClO and HNO3 in the 1996–97 Arctic Polar Vortex
MLS observations of ClO and HNO3 in the 1996–97 Arctic Polar Vortex
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1996-97 年北极极涡中 ClO 和 HNO3 的 MLS 观测
DOI：
10.1029/97gl52830
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发表时间：
1997
影响因子：
5.2
通讯作者：
J. W. Waters
中科院分区：
文献类型：
--
作者：
M. Santee;G. Manney;L. Froidevaux;R. Zurek;J. W. Waters
本文介绍了1996-97年北极冬季平流层下部ClO和气相HNO 3的微波临边探测器（MLS）测量结果。1997年增强的ClO水平和垂直范围均小于1996年，增强程度也小于1996年。这与两年气温演变和垂直结构的差异是一致的。在初冬由于非绝热下降而增加的气相HNO 3丰度，在MLS观察到的所有六个北极冬季中，从中到晚冬呈现出下降趋势，可能是由于在此期间HNO 3光解增加。
Microwave Limb Sounder (MLS) measurements of lower stratospheric ClO and gas‐phase HNO3 are presented for the 1996–97 Arctic winter. The horizontal and vertical extent of enhanced ClO were smaller in 1997 than in 1996, as was the degree of enhancement. This is consistent with differences in the evolution and vertical structure of temperatures in the two years. Gas‐phase HNO3 abundances, which increased in early winter due to diabatic descent, exhibited a decreasing trend from mid to late winter in all six Arctic winters observed by MLS, probably due to increasing HNO3 photolysis throughout this period.