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  Machine Learning Approach to Investigating the Relative Importance of Meteorological and Aerosol-Related Parameters in Determining Cloud Microphysical Properties

Bender, F.-A.-M., Lord, T., Staffansdotter, A., Jung, V., Undorf, S. (2024): Machine Learning Approach to Investigating the Relative Importance of Meteorological and Aerosol-Related Parameters in Determining Cloud Microphysical Properties. - Tellus - B, 76, 1, 1-18.
https://doi.org/10.16993/tellusb.1868

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???ViewItemFull_lblCiteItemAs???: https://publications.pik-potsdam.de/pubman/item/item_29281 ???ViewItemFull_lblCiteItemVersionAs???: https://publications.pik-potsdam.de/pubman/item/item_29281_3
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 ???ViewItemFull_lblCreators???:
Bender, Frida A.-M.1, ???ENUM_CREATORROLE_AUTHOR???
Lord, Tobias1, ???ENUM_CREATORROLE_AUTHOR???
Staffansdotter, Anna1, ???ENUM_CREATORROLE_AUTHOR???
Jung, Verena1, ???ENUM_CREATORROLE_AUTHOR???
Undorf, Sabine2, ???ENUM_CREATORROLE_AUTHOR???                 
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1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 ???ViewItemFull_lblAbstract???: Aerosol effects on cloud properties are notoriously difficult to disentangle from variations driven by meteorological factors. Here, a machine learning model is trained on reanalysis data and satellite retrievals to predict cloud microphysical properties, as a way to illustrate the relative importance of meteorology and aerosol, respectively, on cloud properties. It is found that cloud droplet effective radius can be predicted with some skill from only meteorological information, including estimated air mass origin and cloud top height. For ten geographical regions the mean coefficient of determination is 0.3813
and normalised root-mean square error 25%. The machine learning model thereby performs better than a reference linear regression model, and a model predicting the climatological mean. A gradient boosting regression performs on par with a neural network regression model. Adding aerosol information as input to the model improves its skill somewhat, but the difference is small and the direction of the influence of changing aerosol burden on cloud droplet effective radius is not consistent across regions, and thereby also not always consistent with what is expected from cloud brightening.

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???ViewItemFull_lblLanguages???: eng - English
 ???ViewItemFull_lblDates???: 2023-01-312023-12-132024-01-102024-01-10
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 ???ViewItemFull_lblIdentifiers???: ???ENUM_IDENTIFIERTYPE_ORGANISATIONALK???: RD2 - Climate Resilience
???ENUM_IDENTIFIERTYPE_PIKDOMAIN???: RD2 - Climate Resilience
???ENUM_IDENTIFIERTYPE_WORKINGGROUP???: Adaptation in Agricultural Systems
???ENUM_IDENTIFIERTYPE_RESEARCHTK???: Atmosphere
???ENUM_IDENTIFIERTYPE_RESEARCHTK???: Weather
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???ENUM_IDENTIFIERTYPE_MODELMETHOD???: Machine Learning
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???ENUM_IDENTIFIERTYPE_DOI???: 10.16993/tellusb.1868
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???ViewItemFull_lblSourceTitle???: Tellus - B
???ViewItemFull_lblSourceGenre???: ???ENUM_GENRE_JOURNAL???, SCI, Scopus, p3, oa
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???ENUM_IDENTIFIERTYPE_PUBLISHER???: Stockholm University Press