Potential and Limitations of Machine Learning for Modeling Warm‐Rain Cloud Microphysical Processes
Potential and Limitations of Machine Learning for Modeling Warm‐Rain Cloud Microphysical Processes
复制标题
机器学习在暖雨云微物理过程建模中的潜力和局限性
DOI:
10.1029/2020ms002301
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发表时间:
2020
影响因子:
6.8
通讯作者:
Seifert
中科院分区:
文献类型:
--
作者:
Seifert
The use of machine learning based on neural networks for cloud microphysical parameterizations is investigated. As an example, we use the warm‐rain formation by collision‐coalescence, that is, the parameterization of autoconversion, accretion, and self‐collection of droplets in a two‐moment framework. Benchmark solutions of the kinetic collection equations are performed using a Monte Carlo superdroplet algorithm. The superdroplet method provides reliable but noisy estimates of the warm‐rain process rates. For each process rate, a neural network is trained using standard machine learning techniques. The resulting models make skillful predictions for the process rates when compared to the testing data. However, when solving the ordinary differential equations, the solutions are not as good as those of an established warm‐rain parameterization. This deficiency can be seen as a limitation of the machine learning methods that are applied, but at the same time, it points toward a fundamental ill‐posedness of the commonly used two‐moment warm‐rain schemes. More advanced machine learning methods that include a notion of time derivatives, therefore, have the potential to overcome these problems.
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影响因子:
6.8
作者:
O'Gorman, Paul A.;Dwyer, John G.
通讯作者:
Dwyer, John G.
影响因子:
5.1
作者:
S. Unterstrasser;F. Hoffmann;Marion Lerch
通讯作者:
S. Unterstrasser;F. Hoffmann;Marion Lerch
影响因子:
6.3
作者:
P. Dziekan;H. Pawłowska
通讯作者:
H. Pawłowska
影响因子:
3.1
作者:
Brenowitz, Noah D.;Beucler, Tom;Bretherton, Christopher S.
通讯作者:
Bretherton, Christopher S.
DOI:
10.21203/rs.3.rs-55125/v1
发表时间:
2020-01
期刊:
ArXiv
影响因子:
--
作者:
Christopher Rackauckas;Yingbo Ma;Julius Martensen;Collin Warner;K. Zubov;R. Supekar;Dominic J. Skinner;A. Ramadhan
通讯作者:
Christopher Rackauckas;Yingbo Ma;Julius Martensen;Collin Warner;K. Zubov;R. Supekar;Dominic J. Skinner;A. Ramadhan