کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5487466 | 1523586 | 2017 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characteristics of convective structures of sodium layer in lower thermosphere (105-120 km) at Haikou (19.99°N, 110.34°E), China
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Characteristics of convective structures of sodium layer in lower thermosphere (105-120 km) at Haikou (19.99°N, 110.34°E), China Characteristics of convective structures of sodium layer in lower thermosphere (105-120 km) at Haikou (19.99°N, 110.34°E), China](/preview/png/5487466.png)
چکیده انگلیسی
The atmospheric sodium layer normally occurs in the mesopause (80-105 km) region, but rarely in the lower thermosphere region (>105 km) at low latitude. We observed a kind of peculiar sodium layer in lower thermosphere at Haikou (19.99°N, 110.34°E)-the thermospheric convective sodium layer (TCSL) in a lidargram. The TCSL's sodium density unstably developed over time and appeared as several discontinuous convective shapes vertically. It is the first time convective sodium layer observed in the lower thermosphere region (105-120 km). Based on Haikou lidar data, we obtained 14 TCSL events during 180 nights from March 2010 to August 2012. Most of the apogees of the TCSL events are higher than 108 km. A TCSL event lasts several hours and is composed of several convective structures, with each veitical shape lasting â¼5-30 min. All TCSL events occurred during spring and summer, and generally appear near midnight (22:00-00:00 LT). The TCSL has potential regional feature and appears to be related to the thermospheric sporadic E (Es) layers, winds, and field-aligned ionospheric irregularities (FAI).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 164, November 2017, Pages 132-141
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 164, November 2017, Pages 132-141
نویسندگان
Jing Jiao, Guotao Yang, Jihong Wang, Tiemin Zhang, Hongyan Peng, Yuchang Xun, Zhengkuan Liu, Chi Wang,