Vertical wind shear on Jupiter from Cassini images
Vertical wind shear on Jupiter from Cassini images
复制标题
卡西尼号图像中木星的垂直风切变
DOI：
10.1029/2005je002556
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发表时间：
2006
影响因子：
--
通讯作者：
R. West
中科院分区：
文献类型：
--
作者：
Liming Li;A. Ingersoll;A. Vasavada;A. Simon;A. Genio;S. Ewald;C. Porco;R. West
[1]由卡西尼号成像科学子系统（ISS）获得的木星多滤波器图像用于推导可见云层上方和下方高度的纬向风。跟踪国际空间站紫外图像上特有的小特征，以获得系统的高空纬向风。比较紫外线图像和卡西尼复合红外光谱仪（CIRS）的纬向风垂直廓线，紫外线图像的纬向风来自一个比连续波段图像的纬向风高出0.2标度高度的气压水平。在赤道地区的不同纬度的更深的纬向风的测量跟踪云的特征内观察到的热点连续带图像。在这项研究中，更深的纬向风将伽利略探测器的测量扩展到赤道地区的不同纬度。伽利略探测器和这项研究之间的比较表明，这些快速移动的云在热点内的深度超过3巴，因此可能是水云。
[1] Multifilter images of Jupiter acquired by the Cassini Imaging Science Subsystem (ISS) are used to derive zonal winds at altitudes above and below the visible cloud deck. Small features unique to the ultraviolet images of ISS are tracked to get the systematic high-altitude zonal winds. Comparison between the zonal winds from ultraviolet images and the vertical profile of zonal winds from the Cassini Composite Infrared Spectrometer (CIRS) shows that the zonal winds from the ultraviolet images are from a pressure level that is ∼0.2 scale heights higher than the pressure level of the zonal winds from continuum-band images. Deeper zonal winds at different latitudes of the equatorial region are measured by tracking cloud features observed within hot spots on continuum-band images. The deeper zonal winds in this study extend the measurement of the Galileo probe to different latitudes of the equatorial region. Comparison between the Galileo probe and this study suggests that these fast-moving clouds within hot spots are deeper than 3 bars and are therefore probably water clouds.