Comparison of atmospheric parameters derived from meteor observations with CIRA
Comparison of atmospheric parameters derived from meteor observations with CIRA
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DOI：
10.1029/1999rs002226
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发表时间：
2000-05
期刊：
影响因子：
1.6
通讯作者：
M. Cervera;I. Reid
中科院分区：
文献类型：
--
作者：
M. Cervera;I. Reid
本文比较了由低密度流星回波衰减得到的大气参数T/ p（其中T为温度，p为气压）的月平均值与CIRA（1986）大气模式。流星数据是由位于澳大利亚阿德莱德以北40公里处的巴克兰公园甚高频雷达收集的。我们研究流星观测和CIRA之间的整体协议，以及两者之间的季节性差异。与Hocking等[1997]的结果进行了比较。我们的结果与霍金等人的结果是互补的;我们的数据是在南半球而不是北方半球获得的。文中还讨论了地磁场对流星余迹扩散的影响及其对大气参数测量的影响。我们注意到，在使用流星推导大约92-93公里高度以上的大气温度和压力时，地磁场是一个非常重要的考虑因素。在这些高度以上必须考虑到这种影响，因为不这样做会导致数据解释的错误。最近的研究人员通过将数据限制在90公里以下来避免这个问题。
In this paper we compare monthly averages of the atmospheric parameter T/ p (where T is temperature and p is pressure) derived from the decay of underdense meteor echoes with the CIRA (1986) atmospheric model. The meteor data were collected with the Buckland Park VHF radar situated ∼40km north of Adelaide, Australia. We examine the overall agreement between the meteor observations and CIRA as well as seasonal differences between the two. Comparison is made with the results of Hocking et al. [1997]. Our results are complimentary to those of Hocking et al.; our data were obtained in the Southern Hemisphere as opposed to the Northern Hemisphere. A discussion on the effect of the geomagnetic field on the diffusion of meteor trails and its effect on the measurement of atmospheric parameters is also included. We note that the geomagnetic field is a very important consideration when using meteors for the derivation of atmospheric temperatures and pressures above heights of around 92–93 km. This effect is required to be taken into account above these heights as failure to do so leads to errors in the interpretation of the data. Recent researchers have avoided this problem by restricting their data to below 90 km.