Arctic ozone depletion observed by UARS MLS during the 1994-95 winter
Arctic ozone depletion observed by UARS MLS during the 1994-95 winter
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UARS MLS 在 1994-95 年冬季观测到的北极臭氧消耗
DOI：
10.1029/95gl03591
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
R. Zurek
中科院分区：
文献类型：
--
作者：
G. Manney;L. Froidevaux;J. Waters;M. Santee;W. Read;D. Flower;R. Jarnot;R. Zurek
在1994-1995年北极异常寒冷的冬季，微波肢体探测仪在12月底以及整个2月和3月初观测到一氧化氯(ClO)的增强。12月下旬(CLO)比前3年的任何一年都要高，这与初冬较冷的情况一致。从1994年12月下旬到1995年2月初，465K(约50hPa)涡旋平均臭氧Osub3减少了约5%，局地减少了约30%，2月初至3月初局地又减少了约5%。输运计算表明，465K时，涡旋平均化学损失约为20%，其中约1/4被向下输送的Osub3所掩盖。这种北极化学O{sub3}损失在MLS柱O{sub3}数据中很难检测到。参考文献12，图7。
During the unusually cold 1994-95 Arctic winter, the Microwave Limb Sounder observed enhanced chlorine monoxide (ClO) in late December and throughout February and early March. Late Dec (ClO) was higher than during any of the previous 3 years, consistent with the colder early winter. Between late Dec 1994 and early Feb 1995, 465 K ({approximately}50 h Pa) vortex-averaged ozone O{sub 3} decreased by {approximately}5%, with local decreases of {approximately}30%; additional local decreases of {approximately}5% were seen between early Feb and early Mar. Transport calculations indicate that vortex-averaged chemical loss between late Dec and early Feb was {approximately}20% at 465 K, with {approximately}1/4 of that masked by downward transport of O{sub 3}. This Arctic chemical O{sub 3} loss is not readily detectable in MLS column O{sub 3} data. 12 refs., 7 fig.