Lidar temperature series in the middle atmosphere as a reference data set – Part 2: Assessment of temperature observations from MLS/Aura and SABER/TIMED satellites - Archive ouverte HAL Access content directly
Journal Articles Atmospheric Measurement Techniques Year : 2018

Lidar temperature series in the middle atmosphere as a reference data set – Part 2: Assessment of temperature observations from MLS/Aura and SABER/TIMED satellites

(1) , (1) , (1) , (1) , (2) , (3)
1
2
3
Robin Wing
  • Function : Author
  • PersonId : 1025980
Alain Hauchecorne
  • Function : Author
  • PersonId : 914935
Philippe Keckhut
  • Function : Author
  • PersonId : 918122
Sophie Godin-Beekmann
Sergey Khaykin
  • Function : Author
  • PersonId : 988019

Abstract

We have compared 1338 nights of Rayleigh lidar temperatures measured at L'Observatoire de Haute Provence (OHP) with co-located temperature measurements from the Microwave Limb Sounder (MLS) and the Sounding of the Atmosphere by Broadband Emission Radiometry instru- ment (SABER). The comparisons were conducted using data from January 2002 to January 2011 in the geographic region around the observatory (43.93° N, 5.71° E). We have found systematic differences between the temperatures measured from the ground based lidar and those measured from the satellites which suggest non-linear distortions in the satellite altitude retrievals. We see a winter stratopause cold bias in the satellite measurements with respect to the lidar (−6 K for SABER and −15 K for MLS), a summer mesospheric warm bias (10 K near 60 km), and a vertically structured bias for MLS (0 to 4 K). We have corrected the stratopause height of the satellite measurements using the lidar temperatures and have seen an improvement in the comparison. The winter stratospheric relative cold bias between the lidar and SABER has been eliminated and the summer mesospheric warm bias is reduced by 6 K. Stratopause altitude corrections have reduced the relative cold bias between the lidar and MLS by 4 K in the early autumn and late spring.
Fichier principal
Vignette du fichier
amt-11-6703-2018.pdf (5.99 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

insu-01784812 , version 1 (28-03-2019)

Identifiers

Cite

Robin Wing, Alain Hauchecorne, Philippe Keckhut, Sophie Godin-Beekmann, Sergey Khaykin, et al.. Lidar temperature series in the middle atmosphere as a reference data set – Part 2: Assessment of temperature observations from MLS/Aura and SABER/TIMED satellites. Atmospheric Measurement Techniques, 2018, 11 (12), pp.6703-6717. ⟨10.5194/amt-11-6703-2018⟩. ⟨insu-01784812⟩
187 View
87 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More