Evaluation of the WDM6 scheme in the simulation of number concentrations and drop size distributions of warm-rain hydrometeors: comparisons with the observations and other schemes

Evaluation of the WDM6 scheme in the simulation of number concentrations and drop size distributions of warm-rain hydrometeors: comparisons with the observations and other schemes
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WDM6方案在暖雨水凝物数量浓度和液滴尺寸分布模拟中的评价:与观测和其他方案的比较

DOI:
10.1080/16742834.2019.1670584
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发表时间:
2019-10
期刊:
Atmos. Oceanic Sci. Lett.
影响因子:
--
通讯作者:
YANG Jiefan
YANG Jiefan
中科院分区:
其他
文献类型:
--
作者:
GUO Jiaxu;LEI Hengchi;CHEN Di;YANG Jiefan

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摘要暖雨水流星的数量、浓度和尺寸分布在微物理过程的模拟中起着重要的作用。为了评估WDM6方案的性能,WDM6方案从暖雨水流星数密度和DSD两个方面对云数浓度(NC)进行了显式预报,将WDM6方案的模拟与飞行试验的空中观测以及Thompson方案和Morison方案的模拟进行了比较。结果表明,与观测值相比,WDM6方案产生的云(雨)数密度较小(较大),云DSD较宽,层状云(SC)高层偏差最大。汤普森方案和莫里森方案都将NC设置为常量,在NC和DSD方面比WDM6方案更好地与观测值相比较。对WDM6方案的初始云凝结核(CCN)数浓度(CCN0)的敏感性试验表明,较好地选择初始CCN0可以改善对流云的模拟,但对SC的影响不大。在WDM6方案中,对雨量、浓度和DSD的模拟对CCN0不敏感。图形摘要
ABSTRACT The number concentrations and drop size distributions (DSDs) of warm-rain hydrometeors play an important role in the simulation of microphysical processes. To evaluate the performance of the WDM6 scheme, which predicts the cloud number concentration (Nc) explicitly in aspects of warm-rain hydrometeors number concentrations and DSDs, the simulation of the WDM6 scheme is compared with airborne observations of a flight trial, as well as with the simulations of the Thompson scheme and Morrison scheme. Results show that the WDM6 scheme produces smaller (larger) cloud (rain) number concentrations and wider cloud DSDs compared to the observations, with the largest biases at upper levels of stratiform cloud (SC). The Thompson scheme and the Morrison scheme, both of which set the Nc as a constant, compare better to the observations than the WDM6 scheme in aspects of Nc and DSD. Sensitivity tests of the initial cloud condensation nuclei (CCN) number concentration (CCN0) of the WDM6 scheme show that a better choice of the initial CCN0 may improve the simulation of convective cloud but helps little in terms of SC. The simulation of rain number concentration and DSD is not sensitive to the CCN0 in the WDM6 scheme. GRAPHICAL ABSTRACT
DOI: 10.1155/2010/707253
发表时间: 2010-06
影响因子: 2.9
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DOI: 10.1007/978-1-935704-36-2_1
发表时间: 1969
期刊: Meteorological Monographs
影响因子: --
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DOI: 10.1175/jas3535.1
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