Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 15, issue 4
Articles | Volume 15, issue 4
https://doi.org/10.5194/amt-15-987-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-15-987-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 4
Research article
 | 
24 Feb 2022
Research article |  | 24 Feb 2022

Calculating the vertical column density of O4 during daytime from surface values of pressure, temperature, and relative humidity

Steffen Beirle, Christian Borger, Steffen Dörner, Vinod Kumar, and Thomas Wagner

Supplement

https://doi.org/10.5194/amt-15-987-2022-supplement

Data sets

RS92 GRUAN Data Product Version 2 (RS92-GDP.2) M. Sommer, R. Dirksen, and F. Immler https://doi.org/10.5676/GRUAN/RS92-GDP.2

ERA5 hourly data on single levels from 1979 to present H. Hersbach, B. Bell, P. Berrisford, G. Biavati, A. Horányi, J. Muñoz Sabater, J. Nicolas, C. Peubey, R. Radu, I. Rozum, D. Schepers, A. Simmons, C. Soci, D. Dee, and J.-N. Thépaut https://doi.org/10.24381/cds.adbb2d47

CDCv2.1 Deutscher Wetterdienst https://cdc.dwd.de/portal/

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Short summary
We present a formalism that relates the vertical column density (VCD) of the oxygen collision complex O4 to surface values of temperature and pressure, based on physical laws. In addition, we propose an empirical modification which also accounts for surface relative humidity (RH). This allows for simple and quick but still accurate calculation of the O4 VCD without the need for constructing full vertical profiles, which is expected to be useful in particular for MAX-DOAS applications.
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