Ozone and temperature changes in the stratosphere following the eruption of Mount Pinatubo
Ozone and temperature changes in the stratosphere following the eruption of Mount Pinatubo
复制标题
皮纳图博火山喷发后平流层中的臭氧和温度变化
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
L. Froidevaux
中科院分区：
文献类型：
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作者：
W. Randel;Fei Wu;J. Russell;J. Waters;L. Froidevaux
1991年6月皮纳图博火山喷发后，记录了1991-1994年期间平流层臭氧和较低平流层温度的全球变化。臭氧柱状测量来自Nimbus 7和Meteor 3卫星上的臭氧总量测绘分光计仪器，以及来自NOAA 11的太阳反向散射紫外线数据；这些卫星臭氧数据通过与地面Dobson分光光度计测量进行比较而得到验证。还分析了高层大气研究卫星上的卤素掩星实验和微波测深仪的臭氧廓线数据。卫星温度数据来自微波探测单元通道4，代表150至50mbar层的平均值。臭氧观测表明，全球大片地区的臭氧层大量减少(约5-10%)；每年冬春期间北半球中高纬度地区损失最大(1992-1993年最大)，1993年春季南半球高纬度地区损失最大，1991-1993年期间热带地区臭氧损失最大。在喷发后的一到两年里，温度在30°N以上异常温暖(大约1K)-S。1993年夏季期间，在北半球极冠上也观察到了显著的冷异常，这一结果可能与1993年全年臭氧水平的下降有关。
Global variations in stratospheric ozone and lower stratospheric temperature are documented for the period 1991–1994, following the eruption of Mount Pinatubo in June 1991. Column ozone measurements are from the total ozone mapping spectrometer instruments on the Nimbus 7 and Meteor 3 satellites, together with solar backscattered ultraviolet data from NOAA 11; these satellite ozone data are validated by comparisons with ground-based Dobson spectrophotometer measurements. Ozone profile data from the halogen occultation experiment and microwave limb sounder instruments on the upper atmosphere research satellite are also analyzed. Satellite temperature data are from the microwave sounding unit channel 4, representing a mean of the 150- to 50-mbar layer. The ozone observations show substantial decreases in column ozone (of order 5–10%) over large regions of the globe; largest losses are observed in northern hemisphere middle-high latitudes during winter-spring of each year (largest in 1992–1993), over southern hemisphere high latitudes in spring 1993, and episodically over the tropics during 1991–1993. Temperatures are anomalously warm (by order 1 K) over 30°N-S for 1 to 2 years following the eruption. Significant cold anomalies are also observed over the northern hemisphere polar cap during summer 1993, a result probably related to the decreased ozone levels throughout 1993.