气候变化领域集成服务门户(CCPortal): New Lidar Observations of Ca+ in the Mesosphere and Lower Thermosphere Over Arecibo

CCPortal

DOI	10.1029/2020GL087113
	New Lidar Observations of Ca+ in the Mesosphere and Lower Thermosphere Over Arecibo
	Raizada S.; Smith J.A.; Lautenbach J.; Aponte N.; Perillat P.; Sulzer M.; Mathews J.D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:5
英文摘要	This paper presents the first high-resolution resonance lidar measurements of calcium ion (Ca+) layers in the F region valley (140–180 km) over Arecibo. Unique, simultaneous Ca+, neutral sodium (Na), and potassium (K) lidar observations, along with incoherent scatter radar electron concentration (Ne) covering 80- to 180-km altitudes for three consecutive nights, are reported here. At E region altitudes, the Ca+ distribution follows sporadic E activity on these nights. Thin Ca+ layers (widths < 150 m) imply wind reversals to be occurring over this short height range. Ca+ above 140 km do not always correspond to Ne layers but are detected only during presunrise hours. The average Ca+ column abundance below 120 km is highly variable but during high-altitude Ca+ event decreases by a factor of 2 above 120 km. Both Ne and Ca+ display similar descent rates of ~7 m/s at altitudes >150 km during these events. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric electricity; E region; F region; Metal ions; Metals; descending layers; Electron concentration; Incoherent scatter radar; Lidar measurements; Lidar observation; mesosphere; Mesosphere and lower thermosphere; Sporadic E; Optical radar; cation; E region; F region; lidar; mesosphere; potassium; radar; sodium; thermosphere; Arecibo; Puerto Rico
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170619
作者单位	Arecibo Observatory, Arecibo, Puerto Rico; NASA Langley Research Center, Hampton, VA, United States; Radar Space Sciences Lab, The Pennsylvania State University, University Park, PA, United States
推荐引用方式 GB/T 7714	Raizada S.,Smith J.A.,Lautenbach J.,et al. New Lidar Observations of Ca+ in the Mesosphere and Lower Thermosphere Over Arecibo[J],2020,47(5).
APA	Raizada S..,Smith J.A..,Lautenbach J..,Aponte N..,Perillat P..,...&Mathews J.D..(2020).New Lidar Observations of Ca+ in the Mesosphere and Lower Thermosphere Over Arecibo.Geophysical Research Letters,47(5).
MLA	Raizada S.,et al."New Lidar Observations of Ca+ in the Mesosphere and Lower Thermosphere Over Arecibo".Geophysical Research Letters 47.5(2020).