A comparative study of daytime mesopause temperatures obtained using unique ground based optical and meteor wind radar techniques over the magnetic equator

作者：Vineeth C^*; Pant TK; Antonita M; Ramkumar G; Devasia CV; Sridharan R

来源：Geophysical Research Letters, 2005, 32(19): L19101.

DOI：10.1029/2005GL023728

This paper presents the first ever comparison of daytime Mesopause OH rotational temperatures as determined using Meinel ( 8- 3) dayglow emissions with those obtained using the recently established and collocated, meteor radar ( SKiYMET) over the magnetic equator in India. The measurements were made over Thiruvananthapuram ( 8.5 degrees N, 76.5 degrees E, 0.5 degrees N diplat.) for January - May 2005 period. Overall agreement had been good ( +/- 20 K) with all the gross features coming out fairly well. Further, the temperatures estimated using these two techniques, exhibit significant wavelike modulations with periods spanning similar to 3 - 65 days with varying phase differences, presumably due to their interaction with the longer period waves like the semiannual oscillation ( SAO). The consistency of the temperature variabilities at two different altitudes viz. 87 and 94 km enables investigation of the mesosphere lower thermosphere dynamic coupling.

• 出版日期2005-10-4