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海南富克(19.5°N,109.1°E)流星雷达是我国低纬地区第一台探测中高层大气风场的雷达.利用该雷达观测的2009年春季近3个月的风场数据(2月1日至4月20日),第一次给出了我国低纬地区80～100km高度范围内大气周日潮汐、半日潮汐及平均风随时间、高度的变化情况.分析结果表明:在春季,我国低纬上空中层顶区存在非常强烈的大气潮汐波,并且大气周日潮的幅度明显大于半日潮,周日潮幅度的最大值(约100m/s)出现在经向风场中.周日潮和半日潮的相位在垂直方向上向下传播.与大气潮汐波线性理论模式GSWM02比较表明,富克周日潮与模式有较好的一致,而半日潮汐波与模式有较大的差异。
Meteor Radar at Hainan Rich (19.5 ° N, 109.1 ° E) is the first radar to detect middle and upper atmospheric wind fields in the low latitudes of China, and the wind field data of the last three months of spring 2009 From January 1 to April 20), the tidal, half-tidal and mean-time tidal changes of the atmosphere over the altitude of 80-100 km in the low latitudes of our country are presented for the first time. The analysis results show that in the spring, There is a very strong atmospheric tidal wave in the low-latitude meso-melange region, and the magnitude of the atmospheric tidal range is obviously greater than that of the semi-diurnal tide. The maximum value of the tidal amplitude (about 100 m / s) appears in the meridional wind field. The vertical tidal wave propagates downwards.Comparing with the linear theory model GSWM02 of atmospheric tidal wave, it shows that the Euclidean tide is consistent with the pattern well, while the half-day tidal wave is quite different from the model.