Climate Change Data Portal
| 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). |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
