کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1768179 1020217 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Connection between winter mesopause region temperatures and diurnal LF reflection height variations measured at Collm
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Connection between winter mesopause region temperatures and diurnal LF reflection height variations measured at Collm
چکیده انگلیسی
Scale height, H, estimates are calculated from the decrease/increase of ionospheric virtual reflection heights of low-frequency (LF) radio waves at oblique incidence in suitably defined morning intervals around sunrise during winter months. The day-to-day variations of H qualitatively agree with daily mean temperature variations around 90 km from meteor radar measurements. Since mesospheric long-period temperature variations are generally accepted to be the signature of atmospheric planetary waves, this shows that LF reflection height measurements can be used for monitoring the dynamics of the upper middle atmosphere. The long-term variations of monthly mean H estimates have also been analysed. There is no significant trend, which is in agreement with other measurements of mesopause region temperature trends.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 41, Issue 9, 2008, Pages 1429-1434
نویسندگان
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