Phoenix and MRO coordinated atmospheric measurements
Phoenix and MRO coordinated atmospheric measurements
复制标题
Phoenix 和 MRO 协调大气测量
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Wolff
中科院分区：
文献类型：
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作者：
L. Tamppari;D. Bass;B. Cantor;I. Daubar;C. Dickinson;D. Fisher;Kenneth Fujii;Haraldur P. Gunnlauggson;T. Hudson;D. Kass;A. Kleinböhl;L. Komguem;M. Lemmon;M. Mellon;J. Moores;A. Pankine;J. Pathak;M. Searls;F. Seelos;Michael D. Smith;S. Smrekar;P. Taylor;C. Holstein;W. Weng;J. Whiteway;M. Wolff
[1]凤凰号和火星勘测轨道飞行器（MRO）任务在整个凤凰号任务期间（2008年5月25日至11月2日；Ls = 76°-150°）和稍微超出（~ Ls = 158°）的一次前所未有的运动中合作观测北极地区夏季大气。五个与大气相关的活动被预先确定，并在37个不同的火星日（火星日）执行。凤凰号和MRO几乎同时观测到大气。我们描述了观测策略和历史，参与的实验，和一些初步结果。我们发现，来自不同仪器和平台的测量结果大体上是一致的，互补的测量结果提供了一致的大气图像。季节性水丰度行为与历史测量相吻合。在任务的第一部分（Ls = 76°-118°），通过云运动测量的高空风显示出与着陆器上测量的风相同的季节性一致的日旋转。从l ~ 108.3°-109.1°记录的日循环，其中尘埃锋正在接近凤凰着陆器，被详细检查。在随后的轨道上测量的云层高度表明，在主动上升的区域，尘埃可以在大气中飘得相当高，在2小时内高度增加一倍。综合实验还显示，存在离散的水冰和尘埃垂直层。水汽柱丰度与近地面水汽压的对比表明，水汽从地面到云凝结高度混合不充分，与地面日交换的层深度为0.5-1 km。
[1] The Phoenix and Mars Reconnaissance Orbiter (MRO) missions collaborated in an unprecedented campaign to observe the northern polar region summer atmosphere throughout the Phoenix mission (25 May to 2 November 2008; Ls = 76°–150°) and slightly beyond (∼Ls = 158°). Five atmospherically related campaigns were defined a priori and were executed on 37 separate Martian days (sols). Phoenix and MRO observed the atmosphere nearly simultaneously. We describe the observation strategy and history, the participating experiments, and some initial results. We find that there is general agreement between measurements from different instruments and platforms and that complementary measurements provide a consistent picture of the atmosphere. Seasonal water abundance behavior matches with historical measurements. Winds aloft, as measured by cloud motions, showed the same seasonally consistent, diurnal rotation as the winds measured at the lander, during the first part of the mission (Ls = 76°–118°). A diurnal cycle recorded from Ls ∼ 108.3°–109.1°, in which a dust front was approaching the Phoenix Lander, is examined in detail. Cloud heights measured on subsequent orbits showed that in areas of active lifting, dust can be lofted quite high in the atmosphere, doubling in height over 2 h. The combination of experiments also revealed that there were discrete vertical layers of water ice and dust. Water vapor column abundances compared to near-surface water vapor pressure indicate that water is not well mixed from the surface to a cloud condensation height and that the depth of the layer that exchanges diurnally with the surface is 0.5–1 km.
火星气候探测仪肢体轮廓检索大气温度、压力、灰尘和水冰不透明度
DOI：
10.1029/2009je003358
发表时间：
2009
期刊：
Planets
影响因子：
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作者：
Kleinböhl A
通讯作者：
Kleinböhl A