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Measurement from sun-synchronous orbit of a reaction rate controlling the diurnal NOx cycle in the stratosphere

机译:从反应速率的太阳同步轨道测量控制平流层中的昼夜NOx周期的反应速率

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A reaction rate associated with the nighttime formation of an important diurnally varying species, N2O5, is determined from MIPAS-ENVISAT. During the day, photolysis of N2O5 in the stratosphere contributes to nitrogen-catalysed ozone destruction. However, at night concentrations of N2O5 increase, temporarily sequestering reactive NOx NO and NO2 in a natural cycle which regulates the majority of stratospheric ozone. In this paper, the reaction rate controlling the formation of N2O5 is determined from this instrument for the first time. The observed reaction rate is compared to the currently accepted rate determined from laboratory measurements. Good agreement is obtained between the observed and accepted experimental reaction rates within the error bars.
机译:根据MIPA-Envisat测定与重要的日变化物种N2O5的夜间形成相关的反应速率。在白天,平流层中N2O5的光解有助于氮催化的臭氧破坏。然而,在N 2 O 5的夜间浓度上,暂时在天然循环中暂时螯合活性NOx NO和NO2,该天然循环调节大部分平坦臭氧臭氧。本文首次从该仪器确定了控制N2O5的形成的反应速率。将观察到的反应速率与从实验室测量确定的当前接受的速率进行比较。在误差条内观察到的实验反应速率之间获得了良好的一致性。

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