Scaling of an Atmospheric Model to Simulate Turbulence and Cloud Microphysics in the Pi Chamber
Scaling of an Atmospheric Model to Simulate Turbulence and Cloud Microphysics in the Pi Chamber
复制标题
缩放大气模型以模拟 Pi 室中的湍流和云微物理
DOI:
10.1029/2019ms001670
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发表时间:
2019
影响因子:
6.8
通讯作者:
Shaw, Raymond A.
中科院分区:
文献类型:
--
作者:
Thomas, Subin;Ovchinnikov, Mikhail;Yang, Fan;van der Voort, Dennis;Cantrell, Will;Krueger, Steven K.;Shaw, Raymond A.
The Pi Cloud Chamber offers a unique opportunity to study aerosol‐cloud microphysics interactions in a steady‐state, turbulent environment. In this work, an atmospheric large‐eddy simulation (LES) model with spectral bin microphysics is scaled down to simulate these interactions, allowing comparison with experimental results. A simple scalar flux budget model is developed and used to explore the effect of sidewalls on the bulk mixing temperature, water vapor mixing ratio, and supersaturation. The scaled simulation and the simple scalar flux budget model produce comparable bulk mixing scalar values. The LES dynamics results are compared with particle image velocimetry measurements of turbulent kinetic energy, energy dissipation rates, and large‐scale oscillation frequencies from the cloud chamber. These simulated results match quantitatively to experimental results. Finally, with the bin microphysics included the LES is able to simulate steady‐state cloud conditions and broadening of the cloud droplet size distributions with decreasing droplet number concentration, as observed in the experiments. The results further suggest that collision‐coalescence does not contribute significantly to this broadening. This opens a path for further detailed intercomparison of laboratory and simulation results for model validation and exploration of specific physical processes.
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DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
R. Neggers;P. Duynkerke;S. M. A. Rodts
通讯作者:
S. M. A. Rodts
影响因子:
3.1
作者:
N. Desai;K. K. Chandrakar;Kelken Chang;W. Cantrell;R. Shaw
通讯作者:
R. Shaw
影响因子:
6.8
作者:
J. Pedersen;S. Malinowski;W. Grabowski
通讯作者:
W. Grabowski
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
M. Andrejczuk;J. Reisner;B. Henson;M. Dubey;C. Jeffery
通讯作者:
C. Jeffery
影响因子:
3.3
作者:
Theres Riechelmann;Y. Noh;S. Raasch
通讯作者:
S. Raasch