Improved ozone DIAL retrievals in the upper troposphere and lower stratosphere using an optimal estimation method - Archive ouverte HAL Access content directly
Journal Articles Applied optics Year : 2019

Improved ozone DIAL retrievals in the upper troposphere and lower stratosphere using an optimal estimation method

(1) , (1) , (2) , (3) , (4)
1
2
3
4

Abstract

We have implemented a first-principle optimal estimation method to retrieve ozone density profiles using simultaneously tropospheric and stratospheric differential absorption lidar (DIAL) measurements. Our retrieval extends from 2.5 km to about 42 km in altitude, and in the upper troposphere and the lower stratosphere (UTLS) it shows a significant improvement in the overlapping region, where the optimal estimation method (OEM) can retrieve a single ozone profile consistent with the measurements from both lidars. Here stratospheric and tropospheric measurements from the Observatoire de Haute Provence are used, and the OEM retrievals in the UTLS region compared with coincident ozonesonde measurements. The retrieved ozone profiles have a small statistical uncertainty in the UTLS region relative to individual determinations of ozone from each lidar, and the maximum statistical uncertainty does not exceed a maximum of 7%.
Fichier principal
Vignette du fichier
Farhani_UTLS_AppOpt_submitted_31Oct2018.pdf (532.84 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

insu-02183026 , version 1 (08-12-2020)

Identifiers

Cite

Ghazal Farhani, Robert J. Sica, Sophie Godin-Beekmann, Gérard Ancellet, Alexander Haefele. Improved ozone DIAL retrievals in the upper troposphere and lower stratosphere using an optimal estimation method. Applied optics, 2019, 58 (6), pp.1374-1385. ⟨10.1364/AO.58.001374⟩. ⟨insu-02183026⟩
95 View
70 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More