Preprints
https://doi.org/10.5194/egusphere-2022-187
https://doi.org/10.5194/egusphere-2022-187
12 May 2022
 | 12 May 2022

Comparison of middle- and low-latitude sodium layer from a ground-based lidar network, the Odin satellite, and WACCM-Na model

Bingkun Yu, Xianghui Xue, Christopher J. Scott, Mingjiao Jia, Wuhu Feng, John M. C. Plane, Daniel R. Marsh, Jonas Hedin, Jörg Gumbel, and Xiankang Dou

Abstract. The ground-based measurements obtained from a lidar network and the six-year OSIRIS limb-scanning radiance measurements made by the Odin satellite are used to study the climatology of the middle- and low-latitude sodium (Na) layer. Up to January 2021, four Na resonance fluorescence lidars at Beijing (40.2° N, 116.2° E), Hefei (31.8° N, 117.3° E), Wuhan (30.5° N, 114.4° E), and Haikou (19.5° N, 109.1° E) collected vertical profiles of Na density for a total of 2,136 nights (19,587 h). These large datasets provide routine long-term measurements of the Na layer with exceptionally high temporal and vertical resolution. The lidar measurements are particularly useful for filling in OSIRIS data gaps since the OSIRIS measurements were not made during the dark winter months because they utilise the solar-pumped resonance fluorescence from Na atoms. The observations of Na layers from the ground-based lidars and the satellite are comprehensively compared with a global model of meteoric Na in the atmosphere (WACCM-Na). The lidars present a unique test of OSIRIS and WACCM, because they cover the latitude range along 120° E longitude in an unusual geographic location with significant gravity wave generation. In general, good agreement is found between lidar observations, satellite measurements, and WACCM simulations. Whereas the Na number density from OSIRIS is slightly larger than that from the Na lidars at the four stations within one standard deviation of the OSIRIS monthly average, particularly in autumn and early winter arising from significant uncertainties in Na density retrieved from much less satellite radiance measurements. WACCM underestimates the seasonal variability of the Na layer observed at the lower latitude lidar stations (Wuhan and Haikou). This discrepancy suggests the seasonal variability of vertical constituent transport modeled in WACCM is underestimated because much of the gravity wave spectrum is not captured in the model.

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Journal article(s) based on this preprint

07 Sep 2022
Comparison of middle- and low-latitude sodium layer from a ground-based lidar network, the Odin satellite, and WACCM–Na model
Bingkun Yu, Xianghui Xue, Christopher J. Scott, Mingjiao Jia, Wuhu Feng, John M. C. Plane, Daniel R. Marsh, Jonas Hedin, Jörg Gumbel, and Xiankang Dou
Atmos. Chem. Phys., 22, 11485–11504, https://doi.org/10.5194/acp-22-11485-2022,https://doi.org/10.5194/acp-22-11485-2022, 2022
Short summary
Bingkun Yu, Xianghui Xue, Christopher J. Scott, Mingjiao Jia, Wuhu Feng, John M. C. Plane, Daniel R. Marsh, Jonas Hedin, Jörg Gumbel, and Xiankang Dou

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-187', Anonymous Referee #1, 19 May 2022
    • AC1: 'Reply on RC1', Bingkun Yu, 30 Jun 2022
  • RC2: 'Comment on egusphere-2022-187', Anonymous Referee #2, 29 May 2022
    • AC2: 'Reply on RC2', Bingkun Yu, 30 Jun 2022
  • RC4: 'Comment on egusphere-2022-187', Anonymous Referee #3, 16 Jun 2022
    • AC3: 'Reply on RC4', Bingkun Yu, 30 Jun 2022

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-187', Anonymous Referee #1, 19 May 2022
    • AC1: 'Reply on RC1', Bingkun Yu, 30 Jun 2022
  • RC2: 'Comment on egusphere-2022-187', Anonymous Referee #2, 29 May 2022
    • AC2: 'Reply on RC2', Bingkun Yu, 30 Jun 2022
  • RC4: 'Comment on egusphere-2022-187', Anonymous Referee #3, 16 Jun 2022
    • AC3: 'Reply on RC4', Bingkun Yu, 30 Jun 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Bingkun Yu on behalf of the Authors (01 Jul 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (18 Aug 2022) by William Ward
AR by Bingkun Yu on behalf of the Authors (20 Aug 2022)  Manuscript 

Journal article(s) based on this preprint

07 Sep 2022
Comparison of middle- and low-latitude sodium layer from a ground-based lidar network, the Odin satellite, and WACCM–Na model
Bingkun Yu, Xianghui Xue, Christopher J. Scott, Mingjiao Jia, Wuhu Feng, John M. C. Plane, Daniel R. Marsh, Jonas Hedin, Jörg Gumbel, and Xiankang Dou
Atmos. Chem. Phys., 22, 11485–11504, https://doi.org/10.5194/acp-22-11485-2022,https://doi.org/10.5194/acp-22-11485-2022, 2022
Short summary
Bingkun Yu, Xianghui Xue, Christopher J. Scott, Mingjiao Jia, Wuhu Feng, John M. C. Plane, Daniel R. Marsh, Jonas Hedin, Jörg Gumbel, and Xiankang Dou
Bingkun Yu, Xianghui Xue, Christopher J. Scott, Mingjiao Jia, Wuhu Feng, John M. C. Plane, Daniel R. Marsh, Jonas Hedin, Jörg Gumbel, and Xiankang Dou

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Short summary
We present a study on the climatology of the metal sodium layer in the upper atmosphere, from the ground-based measurements obtained from a lidar network, the Odin satellite measurements, and a global model of meteoric sodium in the atmosphere. Comprehensively comparisons show good agreement and some discrepancies between ground-based observations, satellite measurements, and global model simulations.