Meteor radar measurements of mean winds and tides over Collm (51.3° N, 13° E) and comparison with LF drift measurements 2005–2007
Meteor radar measurements of mean winds and tides over Collm (51.3° N, 13° E) and comparison with LF drift measurements 2005–2007
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流星雷达测量科尔姆 (51.3° N, 13° E) 上空的平均风和潮汐并与 2005-2007 年 LF 漂移测量进行比较
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发表时间：
2011
期刊：
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通讯作者：
C. Jacobi
中科院分区：
文献类型：
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作者：
C. Jacobi
抽象的。自 2004 年夏季以来，全天空 VHF 流星雷达 (MR) 一直在科尔姆（北纬 51.3°，东经 13°）持续运行。该雷达测量流星参数、扩散系数和中层顶区域的水平风。直到 2007 年，MR 风测量与同地低频 (LF) 电离层漂移测量存在时间重叠。MR 和 LF 半日潮汐相位的比较允许凭经验确定由于 LF 波的群延迟而导致的 LF 反射高度的虚拟高度高估。 LF 参考高度必须减少最多 20 公里才能匹配实际高度。通过对群延迟的 LF 高度进行校正，可以与流星雷达测量结果相比，通过 LF 方法确定风的低估，并为使用中层/低热层风继续进行长期趋势分析提供了可能性。
Abstract. An all-sky VHF meteor radar (MR) has been continuously operated at Collm (51.3° N, 13° E) since summer 2004. The radar measures meteor parameters, diffusion coefficients, and horizontal winds in the mesopause region. There exists a temporal overlap of the MR wind measurements with co-located low-frequency (LF) ionospheric drift measurements until 2007. Comparison of MR and LF semidiurnal tidal phases allows to empirically determine the virtual height overestimation of LF reflection heights due to the group retardation of LF waves. LF reference heights have to be reduced by up to 20 km to match real heights. Correction of LF heights for group retardation allows to determine the wind underestimation by the LF method compared with meteor radar measurements and opens the possibility to continue long-term trend analysis using mesosphere/lower thermosphere winds.