Observed nocturnal gravity wave variances and zonal momentum flux in mid-latitude mesopause region over Fort Collins, Colorado, USA
Observed nocturnal gravity wave variances and zonal momentum flux in mid-latitude mesopause region over Fort Collins, Colorado, USA
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DOI：
10.1016/j.jastp.2010.10.016
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发表时间：
2011-03
影响因子：
1.9
通讯作者：
P. Acott;C. She;D. Krueger;Z.-A. Yan;T. Yuan;J. Yue;S. Harrell
中科院分区：
文献类型：
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作者：
P. Acott;C. She;D. Krueger;Z.-A. Yan;T. Yuan;J. Yue;S. Harrell
在2006年9月至2007年4月期间，使用位于科罗拉多州柯林斯堡（40.6N，105 W）的科罗拉多州立大学（CSU）钠激光雷达对中层顶区域的温度、纬向风和纬向风以及纬向动量通量进行了29个夜晚（包括275小时）的测量。计算了温度和风的周期在6分钟到4小时之间的扰动，并与最近报道的位于新墨西哥州星火光学靶场（SOR）（35 N，107 W）的类似激光雷达的观测结果进行了比较，显示出普遍的一致性。观测到的这些波扰动的纬向动量通量的季节平均值在春分季节为0.12± 0.46 m2 s − 2，在冬季为-0.69 ± 0.42 m2 s − 2。将这些结果与文献中的中纬度中间层和低热层（MLT）的两个这样的观测结果进行了比较，即，在SOR的激光雷达观测和日本京都附近的雷达观测（北纬35度，东经106度）。CSU激光雷达观测的震级和符号与公布的结果一致。
Twenty-nine nights including 275h measurements of temperature, zonal and meridional winds, and zonal momentum flux in the mesopause region were made between September 2006 and April 2007 with the Colorado State University (CSU) sodium lidar at Fort Collins, CO (40.6N, 105W). Perturbations with periods between 6min and 4h in temperature and winds were calculated and compared to the recently reported observations by a similar lidar located at Starfire Optical Range (SOR), NM (35N, 107W), showing general agreement. The seasonal means of the observed zonal momentum flux of these wave perturbations were found to be 0.12±0.46m2s−2for the equinoctial season and −0.69±0.42m2s−2for the winter season. These results are compared to two such observations in mid-latitude mesosphere and lower thermosphere (MLT) in the literature, i.e., lidar observation at SOR and radar observation near Kyoto, Japan (35N, 106E). Both magnitudes and signs of the CSU lidar observations are consistent with those published.