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| one publication added to basket [382701] |
Global observations of tropospheric Bromine monoxide (BrO) columns from TROPOMI
Chen, Y.Y.; Liu, S.; Zhu, L.; Seo, S.; Richter, A.; Li, X.C.; Ding, A.; Sun, W.F.; Shu, L.; Wang, X.; Valks, P.; Hendrick, F.; Koenig, T.K.; Volkamer, R.; Bai, B.; Wang, D.K.; Pu, D.C.; Sun, S.; Li, J.; Zuo, X.X.; Fu, W.T.; Li, Y.L.; Zhang, P.; Yang, X.; Fu, T.M. (2023). Global observations of tropospheric Bromine monoxide (BrO) columns from TROPOMI. JGR: Atmospheres 128(24): e2023JD039091. https://dx.doi.org/10.1029/2023JD039091
In: Journal of Geophysical Research-Atmospheres. AMER GEOPHYSICAL UNION: Washington. ISSN 2169-897X; e-ISSN 2169-8996, meer
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| Author keywords |
TROPOMI; BrO; retrieval; GEOS-Chem |
| Auteurs | | Top |
- Chen, Y.Y.
- Liu, S.
- Zhu, L.
- Seo, S.
- Richter, A.
- Li, X.C.
- Ding, A.
- Sun, W., meer
- Shu, L.
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- Wang, X.
- Valks, P.
- Hendrick, F., meer
- Koenig, T.K.
- Volkamer, R.
- Bai, B.
- Wang, D.K.
- Pu, D.C.
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- Sun, S.
- Li, J.
- Zuo, X.X.
- Fu, W.T.
- Li, Y.L.
- Zhang, P.
- Yang, X.
- Fu, T.M.
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| Abstract |
Bromine monoxide (BrO) plays an important role in tropospheric chemistry. The state-of-the-science TROPOspheric Monitoring Instrument (TROPOMI) offers the potential to monitor atmospheric composition with a fine spatial resolution of up to 5.5 × 3.5 km2. We present here the retrieval of tropospheric BrO columns from TROPOMI. We implement a stratospheric correction scheme using a climatological approach based on the latest GEOS-Chem High Performance chemical transport model, and improve the tropospheric air mass factor calculation with TROPOMI surface albedo data accounting for the geometrical dependency. Our product presents a good level of consistency in comparison with measurements from ground-based zenith-sky differential optical absorption spectroscopy (r = 0.67), aircrafts (r = 0.46), and satellites (similar spatial distributions of BrO columns). Furthermore, our retrieval captures BrO enhancements in the polar springtime with values up to 7.8 × 1013 molecules cm−2 and identifies small-scale emission sources such as volcanoes and salt marshes. Based on TROPOMI data, we probe a blowing snow aerosol bromine mechanism in which the snow salinity is reduced to better match simulation and observation. Our TROPOMI tropospheric BrO product contributes high-resolution global information to studies investigating atmospheric bromine chemistry.
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