NOy formed by precipitating electron events in 1991 and 1992: Descent into the stratosphere as observed by ISAMS
NOy formed by precipitating electron events in 1991 and 1992: Descent into the stratosphere as observed by ISAMS
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1991 年和 1992 年沉淀电子事件形成的 NOy：ISAMS 观测到的下降到平流层
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
J. Lambeth
中科院分区：
文献类型：
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作者：
L. Callis;J. Lambeth
本文对1991年11月和1992年5月NOAA 12降水电子资料和ISAMS夜间NO2观测资料进行了比较分析。能量沉积计算表明，在0.1毫巴附近和60° ~ 80 °纬度范围内，NOy的形成是显著的。ISAMS证实，NO2从事件发生前的1-5 ppbv的纬向平均值增加到超过30-40 ppbv的值，局部最大值超过140 ppbv。增加发生在2-3天内，并且通常与由于沉淀电子而计算的NOy形成速率一致。ISAMS数据表明，随后NO2进入平流层，影响了两个半球低于1毫巴和低至30°至40°纬度的NO2混合比。
NOAA 12 precipitating electron data has been examined together with ISAMS observations of nighttime NO2 during electron events in November 1991 and May 1992. Energy deposition calculations suggest the significant formation of NOy during these events near 0.1 mbar and for 60°–80°latitude. ISAMS confirms increases of NO2 from zonally averaged values of ≈1–5 ppbv prior to the events to values in excess of 30–40 ppbv with local maxima in excess of 140 ppbv. The increases occur within 2–3 days and are generally consistent with the calculated NOy formation rates due precipitating electrons. ISAMS data indicate the subsequent transport of the NO2 into the stratosphere affecting NO2 mixing ratios below 1 mbar and down to latitudes of ≈30°to 40°in both hemispheres.