First Simultaneous Lidar Observations of Thermosphere‐Ionosphere Sporadic Ni and Na (TISNi and TISNa) Layers (∼105–120 km) Over Beijing (40.42°N, 116.02°E)

Wu, Fuju; Chu, Xinzhao; Du, Lifang; Jiao, Jing; Zheng, Haoran; Xun, Yuchang; Feng, Wuhu; Plane, John M. C.; Yang, Guotao

doi:10.1029/2022gl100397

i

First Simultaneous Lidar Observations of Thermosphere‐Ionosphere Sporadic Ni and Na (TISNi and TISNa) Layers (∼105–120 km) Over Beijing (40.42°N, 116.02°E)

Supporting Files

2022
By Wu, Fuju ; Chu, Xinzhao ; Du, Lifang ; ...

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Wu, Fuju ; Chu, Xinzhao ; Du, Lifang ; Jiao, Jing ; Zheng, Haoran ; Xun, Yuchang ; Feng, Wuhu ; Plane, John M. C. ; Yang, Guotao
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

We report the first simultaneous lidar observations of thermosphere‐ionosphere sporadic nickel and Na (TISNi and TISNa) layers in altitudes ∼105–120 km over Yanqing (40.42°N, 116.02°E), Beijing. From two years of data spanning April 2019 to April 2020 and July 2020 to June 2021, TISNi layers in May and June possess high densities with a maximum of 818 cm−3 on 17 May 2021, exceeding the density of main layer peak (∼85 km) by ∼4 times. They correlate with strong sporadic E layers observed nearby. TISNa layers occur at similar altitudes as TISNi with spatial‐temporal correlation coefficients of ∼1. The enrichment of Ni in TISNi is evident as the [TISNi]/[TISNa] column abundance ratios are ∼1, about 10 times the main layer [Ni]/[Na] ratios. These results are largely explained by neutralization of converged Ni+ and Na+ ions via recombination with electrons. Calculations show direct recombination dominating over dissociative recombination above ∼105 km.
Keywords:

General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
Source:

Geophysical Research Letters, 49(16)
DOI:

https://doi.org/10.1029/2022gl100397
ISSN:

0094-8276 ; 1944-8007
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by-nc-nd/4.0/
Rights Information:

CC BY-NC-ND
Compliance:

Submitted
Main Document Checksum:

urn:sha256:66f861a28d1fba6913e8c2c35d406f6ba02f9581c99501105857fcef19f2ef0a
Download URL:

https://repository.library.noaa.gov/view/noaa/52052/noaa_52052_DS1.pdf
File Type:

[PDF - 1.60 MB ]

Machine readable version (XML)

Download

ON THIS PAGE

Details Supporting Files

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.