Momentum flux estimates accompanying multiscale gravity waves over Mount Cook, New Zealand, on 13 July 2014 during the DEEPWAVE campaign
Momentum flux estimates accompanying multiscale gravity waves over Mount Cook, New Zealand, on 13 July 2014 during the DEEPWAVE campaign
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2014 年 7 月 13 日 DEEPWAVE 活动期间新西兰库克山上空多尺度重力波的动量通量估计
DOI：
10.1002/2015jd023197
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
A. MacKinnon
中科院分区：
文献类型：
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作者：
K. Bossert;D. Fritts;P. Pautet;B. Williams;M. Taylor;B. Kaifler;A. Dörnbrack;I. Reid;D. Murphy;A. Spargo;A. MacKinnon
2014年7月13日，在深对流重力波实验期间，在国家科学基金会/国家大气研究中心湾流V研究飞机上使用瑞利激光雷达和先进中间层温度成像仪进行了观测（DEEPWAVE）测量计划揭示了库克山上空飞行轨道上从约20公里延伸到90公里的大振幅，多尺度重力波（GW）环境，新西兰这里使用了来自四个连续飞行轨迹的数据来评估较大和较小尺度GW的特征和变化，包括它们的空间尺度、振幅、相速度和动量通量。在每次飞行中，观测到水平波长约为200-300 km的大尺度山波（MW）。岛上较小规模的GW似乎与这个大规模MW的温暖阶段相关。这一分析表明，伴随小尺度MW和传播GW的动量通量明显超过大尺度MW的动量通量和这些高度的典型平均值，各种小尺度事件的最大值在~20-105 m2 s−2范围内。
Observations performed with a Rayleigh lidar and an Advanced Mesosphere Temperature Mapper aboard the National Science Foundation/National Center for Atmospheric Research Gulfstream V research aircraft on 13 July 2014 during the Deep Propagating Gravity Wave Experiment (DEEPWAVE) measurement program revealed a large‐amplitude, multiscale gravity wave (GW) environment extending from ~20 to 90 km on flight tracks over Mount Cook, New Zealand. Data from four successive flight tracks are employed here to assess the characteristics and variability of the larger‐ and smaller‐scale GWs, including their spatial scales, amplitudes, phase speeds, and momentum fluxes. On each flight, a large‐scale mountain wave (MW) having a horizontal wavelength ~200–300 km was observed. Smaller‐scale GWs over the island appeared to correlate within the warmer phase of this large‐scale MW. This analysis reveals that momentum fluxes accompanying small‐scale MWs and propagating GWs significantly exceed those of the large‐scale MW and the mean values typical for these altitudes, with maxima for the various small‐scale events in the range ~20–105 m2 s−2.
使用中层温度测绘仪和相关仪器量化重力波动量通量
DOI：
10.1002/2014jd022150
发表时间：
2014
期刊：
Atmospheres
影响因子：
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作者：
Fritts D
通讯作者：
Fritts D