Preprints
https://doi.org/10.5194/amt-2020-457
https://doi.org/10.5194/amt-2020-457

  19 Nov 2020

19 Nov 2020

Review status: this preprint is currently under review for the journal AMT.

Quantitative comparison of measured and simulated O4 absorptions for one day with extremely low aerosol load over the tropical Atlantic

Thomas Wagner1, Steffen Dörner1, Steffen Beirle1, Sebastian Donner1, and Stefan Kinne2 Thomas Wagner et al.
  • 1Satellite Remote Sensing Group, Max Planck Institute for Chemistry, Mainz, Germany
  • 2Max-Planck Institute for Meteorology, Hamburg, Germany

Abstract. In this study we compare measured and simulated O4 absorptions for conditions of extremely low aerosol optical depth (between 0.034 to 0.056 at 360 nm) on one day during a ship cruise in the tropical Atlantic. For such conditions, the uncertainties related to imperfect knowledge of aerosol properties don't significantly affect the comparison results. We find that the simulations underestimate the measurements by 15 % to 20 %. Even for simulations without any aerosols the measured O4 absorptions are still systematically higher than the simulation results. The observed discrepancies can not be explained by uncertainties of the measurements and simulations and thus indicate a fundamental inconsistency between simulations and measurements.

Thomas Wagner et al.

 
Status: open (extended)
Status: open (extended)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Thomas Wagner et al.

Thomas Wagner et al.

Viewed

Total article views: 288 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
227 58 3 288 3 3
  • HTML: 227
  • PDF: 58
  • XML: 3
  • Total: 288
  • BibTeX: 3
  • EndNote: 3
Views and downloads (calculated since 19 Nov 2020)
Cumulative views and downloads (calculated since 19 Nov 2020)

Viewed (geographical distribution)

Total article views: 147 (including HTML, PDF, and XML) Thereof 147 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 24 Feb 2021
Download
Short summary
We compare measured and simulated O4 absorptions for conditions of extremely low aerosol optical depth, for which the uncertainties related to imperfect knowledge of aerosol properties don't significantly affect the comparison results. The simulations underestimate the measurements by 15 % to 20 %. Even if no aerosols are considered, the simulated O4 absorptions are systematically lower than the measurements. Our results indicate a fundamental inconsistency between simulations and measurements.