Sulfur dioxide in the Venus Atmosphere: II. Spatial and temporal variability
Sulfur dioxide in the Venus Atmosphere: II. Spatial and temporal variability
复制标题
金星大气中的二氧化硫：II。
DOI：
10.1016/j.icarus.2017.05.001
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发表时间：
2017
期刊：
影响因子：
3.2
通讯作者：
V. Wilquet
中科院分区：
文献类型：
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作者：
A. Vandaele;O. Korablev;D. Belyaev;S. Chamberlain;D. Evdokimova;T. Encrenaz;L. Esposito;K. Jessup;F. Lefévre;S. Limaye;A. Mahieux;E. Marcq;F. Mills;F. Montmessin;C. Parkinson;S. Robert;Tony Roman;B. Sandor;A. Stolzenbach;Colin F. Wilson;V. Wilquet
金星大气中硫物种的垂直分布已在本系列论文的第一部分中进行了研究和讨论，讨论了金星SO2的变化。在这第二部分中，我们把注意力集中在空间（水平）和时间的变化所表现出的SO2。为进行这一分析，考虑了适当的数据集-金星快车、地面阿尔马和TEXES的SPICAV/紫外线最低点观测，以及哈勃空间望远镜的紫外线观测。短期和短期尺度上的高变异性。这些仪器观测到的长期趋势表明，在云顶水平的SO2丰度的快速增加，然后缓慢下降，这意味着从低海拔的空气输送起着重要的作用。在云顶观察到的较大幅度的短尺度、短期变化的起源尚不清楚，但也可能与SO2垂直输送的变化有关，也可能与H2O、H2SO 4和Sx的丰度、产生和损失的变化有关。
The vertical distribution of sulfur species in the Venus atmosphere has been investigated and discussed in Part I of this series of papers dealing with the variability of SO2on Venus. In this second part, we focus our attention on the spatial (horizontal) and temporal variability exhibited by SO2. Appropriate data sets – SPICAV/UV nadir observations from Venus Express, ground-based ALMA and TEXES, as well as UV observation on the Hubble Space Telescope – have been considered for this analysis. High variability both on short-term and short-scale are observed. The long-term trend observed by these instruments shows a succession of rapid increases followed by slow decreases in the SO2abundance at the cloud top level, implying that the transport of air from lower altitudes plays an important role. The origins of the larger amplitude short-scale, short-term variability observed at the cloud tops are not yet known but are likely also connected to variations in vertical transport of SO2and possibly to variations in the abundance and production and loss of H2O, H2SO4, and Sx.