Simultaneous and colocated observation of winds and tides by MF and meteor radars over London, Canada (43°N, 81°W), during 1994–1996
Simultaneous and colocated observation of winds and tides by MF and meteor radars over London, Canada (43°N, 81°W), during 1994–1996
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1994年至1996年期间，通过中频和流星雷达对加拿大伦敦（北纬43°，西经81°）上空的风和潮汐进行同步和同地观测
DOI：
10.1029/96rs03467
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发表时间：
1997
期刊：
影响因子：
1.6
通讯作者：
T. Thayaparan
中科院分区：
文献类型：
--
作者：
W. Hocking;T. Thayaparan
1994年7月至1996年6月，在加拿大安大略伦敦上空85-94公里高度范围内，用MF和流星VHF雷达对风和潮汐进行了同步和共定位的比较。一年中每个月都取得了成果。从这些比较中可以得出结论，一般来说，中频间隔天线技术和流星方法都为85-94公里高度范围内的中性空气运动的天气学研究提供了可靠的手段，时间尺度大于12小时，因此是中层大气研究的宝贵工具。然而，我们确实发现，某些参数的估计似乎比其他参数更精确。特别是，纬向长期风变化的测量，以及纬向和纬向的半日潮，似乎特别稳健和可靠，而纬向全日潮和纬向月平均风的测量之间的一致性稍差。前一个问题很可能是流星计数率强烈的日变化造成的。然而，我们不能说我们的纬向月平均风协议总是好的，这些差异值得进一步调查。
Simultaneous and colocated comparisons of winds and tides by MF and meteor VHF radars have been made in the 85–94 km height range from July 1994 to June 1996 over London, Ontario, Canada. Results have been obtained for every month of the year. From these comparisons it is concluded that, in general, the MF spaced antenna technique and the meteor method both provide reliable means for synoptic studies of neutral air motions in the height range 85–94 km, at timescales of greater than 12 hours, and therefore are valuable tools in middle atmospheric research. However, we do find that some parameters seem to be estimated with greater precision than others. In particular, the measurements of the zonal long‐term wind variations, and the semidiurnal tide in both the zonal and meridional directions, seem particularly robust and reliable, while there is somewhat less consistency between measurements of the zonal diurnal tide and the meridional monthly mean winds. The former problem is very likely to be an artifact of the strong diurnal variation in meteor count rates. However, we cannot claim that our meridional monthly mean wind agreement is always good, and these discrepancies deserve further investigation.