极区中层夏季回波与偶发E层关系的初步研究  

Preliminary study on the relation between polar mesosphere summer echoes and polar mesosphere summer echoes-sporadic E layer

作　　者：李海龙[1] 吴健[2] 王茂琰[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054 [2]中国电波传播研究所,电波环境特性及模化技术国家重点实验室,北京102206

出　　处：《电波科学学报》2011年第1期50-54,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(40831062,60971034);电子科技大学科研启动费资助项目(Y02002010401066)

摘　　要：极区中层夏季回波(PMSE,Polar Mesosphere Summer Echoes)是发生在当地夏季极区中层顶附近的一种异常强大的雷达回波。利用电离层测高仪观测到的频高图来确定极区中层夏季回波偶发E层(PMSE-Es,Polar Mesosphere Summer Ech-oes-Sporadic E)PMSE-Es现象,进而研究南北半球PMSE现象。利用南极中山站数据结合新的统计方法给出了1999至2003年PMSE-Es出现率季节性变化,与北极对应年的PMSE出现率对比发现:它们的结果趋于一致,特别是在2002年,它们的出现率均明显偏低。这表明PMSE-Es与PMSE现象可能具有一定的相关性,将来可以利用电离层测高仪观测PMSE,监测全球变暖的环境问题。Polar mesosphere summer echoes （PMSE） are very strong radar echoes near the polar mesopause in local summer. By analyzing the ionograms detected by ionosonde at Arctic and Antarctica, we study PMSE at Arctic and Antarctica by analyzing the Polar mesosphere summer echoes-sporadic E （PMSE-Es）. In order to compare the seasonal variation of the Arctic PMSE and Antarctica PMSE-Es occur- rence rate from 1999 to 2003, the new statically method with the data at Antarctica is used to obtain the PMSE-Es seasonal variation. The agreement of the occurrence of PMSE-Es and that of PMSE is obtained. Especially in 2002, both Arctic PMSE and Antarctica PMSE-Es occurrence rates are lower. The results show that PMSE- Es should have some inherent relations with PMSE, the ionosonde in Arctic and Antarctica may be used to detect PMSE conveniently and monitor the environmental problems of global warming.

关 键 词：极区中层夏季回波 频高图 中山站 虚高 

分 类 号：TN011[电子电信—物理电子学]