Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers ...

• Main Authors: Shi, Guochun, Krochin, Witali, Sauvageat, Eric, Stober, Gunter
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Copernicus Publications 2023
• Subjects: 570 Life sciences; biology; 620 Engineering; 530 Physics; Ny Ålesund; Ny-Ålesund; Svalbard
• Online Access: https://dx.doi.org/10.48350/186157; https://boris.unibe.ch/186157/

Leveraging continuous ozone and water vapor measurements with the two ground-based radiometers GROMOS-C and MIAWARA-C at Ny-Ålesund, Svalbard (79∘ N, 12∘ E) that started in September 2015 and combining MERRA-2 and Aura-MLS datasets, we analyze the interannual behavior and differences in ozone and water vapor and compile climatologies of both trace gases describing the annual variation of ozone and water vapor at polar latitudes. A climatological comparison of the measurements from our ground-based radiometers with reanalysis and satellite data was performed. Overall differences between GROMOS-C and Aura-MLS ozone volume mixing ratio (VMR) climatology are mainly within ±7 % throughout the middle and upper stratosphere and exceed 10 % in the lower mesosphere (1–0.1 hPa) in March and October. For the water vapor climatology, the average 5 % agreement is between MIAWARA-C and Aura-MLS water vapor VMR values throughout the stratosphere and mesosphere (100–0.01 hPa). The comparison to MERRA-2 yields an agreement ...