Doppler Rayleigh/Mie/Raman lidar for wind and temperature measurements in the middle atmosphere up to 80 km
Doppler Rayleigh/Mie/Raman lidar for wind and temperature measurements in the middle atmosphere up to 80 km
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DOI：
10.5194/amt-3-1509-2010
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发表时间：
2010-11
影响因子：
3.8
通讯作者：
G. Baumgarten
中科院分区：
文献类型：
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作者：
G. Baumgarten
抽象的。在ALOMAR瑞利/米氏/拉曼激光雷达（69° N，16° E）上实现了一个直接探测多普勒激光雷达，用于测量80公里以内的中层大气风速，分辨率为2小时。在49 km和80 km处，视线风的随机误差分别约为0.6 m/s和10 m/s。我们使用多普勒瑞利碘光谱仪（DoRIS）在碘线1109（~532.260 nm）。DoRIS使用强度级联通道的两个分支来覆盖10至100公里高度的动态范围。风探测系统的设计是为了扩大现有的在355纳米、532纳米和1064纳米波长上进行的气溶胶和温度多波长观测。激光雷达使用两个平均功率为14 W、波长为532 nm的激光器和两个直径为1.8 m的可倾斜望远镜。在大约49公里的高度以下，精度和时间分辨率受到所用探测器的最大计数率的限制，而不是受到可用光子数的限制。我们报告的第一个同时瑞利温度和风测量激光雷达在平流层和中间层的2009年1月17日和23日。
Abstract. A direct detection Doppler lidar for measuring wind speed in the middle atmosphere up to 80 km with 2 h resolution was implemented in the ALOMAR Rayleigh/Mie/Raman lidar (69° N, 16° E). The random error of the line of sight wind is about 0.6 m/s and 10 m/s at 49 km and 80 km, respectively. We use a Doppler Rayleigh Iodine Spectrometer (DoRIS) at the iodine line 1109 (~532.260 nm). DoRIS uses two branches of intensity cascaded channels to cover the dynamic range from 10 to 100 km altitude. The wind detection system was designed to extend the existing multi-wavelength observations of aerosol and temperature performed at wavelengths of 355 nm, 532 nm and 1064 nm. The lidar uses two lasers with a mean power of 14 W at 532 nm each and two 1.8 m diameter tiltable telescopes. Below about 49 km altitude the accuracy and time resolution is limited by the maximum count rate of the detectors used and not by the number of photons available. We report about the first simultaneous Rayleigh temperature and wind measurements by lidar in the strato- and mesosphere on 17 and 23 January 2009.