High spatial resolution mapping of Mars mesospheric zonal winds by infrared heterodyne spectroscopy of CO2
High spatial resolution mapping of Mars mesospheric zonal winds by infrared heterodyne spectroscopy of CO2
复制标题
利用 CO2 红外外差光谱绘制火星中层纬向风的高空间分辨率绘图
DOI：
10.1029/2006gl026900
复制
发表时间：
2006
影响因子：
5.2
通讯作者：
K. Fast
中科院分区：
文献类型：
--
作者：
G. Sonnabend;M. Sornig;P. Krötz;R. Schieder;K. Fast
我们提出了火星纬向风的测量，通过红外外差光谱的CO2功能在959.3917 cm−1（10.423 μm）。2005年12月5日至8日，火星冲日后不久，在亚利桑那州基特峰国家太阳天文台的麦克马思-皮尔斯太阳望远镜上使用科隆可调谐外差红外光谱仪（THIS）进行了观测，其空间分辨率前所未有，为0.1.7角秒。在0.16角秒的火星盘上。在靠近西（傍晚）边缘的六个不同纬度观测火星，并从中层CO2非热发射和低层大气区域吸收特征之间的多普勒频移中检索纬向风。火星上的季节是北方的冬末（LS 337°）。我们在北纬45°N（−27 ± 17 m/s）反演了逆行风，在赤道（高达−80 ± 13 m/s）和南半球高纬度（75°S）的逆行风（高达51 ± 29 m/s）特别强。
We present Mars zonal wind measurements by means of infrared heterodyne spectroscopy of CO2 features at 959.3917 cm−1 (10.423 μm). Observations were carried out using the Cologne Tuneable Heterodyne Infrared Spectrometer (THIS) from 5–8 December 2005 shortly after Mars opposition at the McMath‐Pierce Solar Telescope of the National Solar Observatory on Kitt Peak in Arizona with an unprecedented spatial resolution of ∼1.7 arcsec on a ∼16 arcsec Martian disk. Mars was observed at six different latitudes close to the west (evening) limb and zonal winds were retrieved from Doppler shifts between CO2 non‐thermal emission from the mesosphere and absorption features from low atmospheric regions. The season on Mars was late northern winter (LS ≈ 337°). We retrieved retrograde winds at latitude 45°N (−27 ± 17 m/s) that were particularly strong at the equator (up to −80 ± 13 m/s) and prograde winds at high southern latitudes (75°S) up to 51 ± 29 m/s.