The Summer Wind Field Between 80 and 93 km Observed by the MST Radar at Poker Flat, Alaska (65°N)
The Summer Wind Field Between 80 and 93 km Observed by the MST Radar at Poker Flat, Alaska (65°N)
复制标题
MST 雷达在阿拉斯加扑克滩 (65°N) 观测到的夏季风场 80 至 93 公里
DOI：
10.1175/1520-0469(1982)039
复制
发表时间：
1982
影响因子：
3.1
通讯作者：
B. Balsley
中科院分区：
文献类型：
--
作者：
D. A. Carter;B. Balsley
本文给出了对阿拉斯加扑克平原80-93公里夏季风场的分析结果。这些数据是使用Poker Flat的大型MST雷达获得的，涵盖了1979年6月17日至7月13日和1980年6月22日至7月22日这两个时期。研究了这些时期的纬向和经向平均风廓线以及“潮汐”分量，并与在类似纬度的其他观测结果以及目前的理论廓线进行了比较。虽然我们的结果与其他观测和理论相当接近，但也存在一些差异，并进行了讨论。除了大气运动的预期8、12和24小时分量外，我们还发现了16小时分量的有力证据，特别是在1979年的数据期间。此外，我们还给出了从3分钟到8天的风波动的平均功率谱的例子。这些谱不仅显示了预期的“潮汐”峰，而且还表明，在最短的(8h)-8h之间，谱能量密度是连续的。
Abstract Results of an analysis of the summertime wind field between 80–93 km over Poker Flat, Alaska are presented. The data were obtained using the large, but as yet incomplete, MST radar at Poker Flat, and cover the periods 17 June–13 July 1979, and 22 June–22 July 1980. Zonal and meridional mean wind profiles and “tidal” components during these periods are examined and are compared with other observations at comparable latitudes as well as with current theoretical profiles. While our results agree reasonably closely with other observations and theory, some discrepancies exist and are discussed. In addition to the expected 8, 12 and 24 h components of atmospheric motions, we find strong evidence for a 16 h component, particularly during the 1979 data period. In addition, we show examples of the average power spectrum of wind fluctuations from 3 min to 8 days. These spectra not only show the expected “tidal” peaks, but show also that the spectral energy density is continuous between the shortest (8 h) t...