Impact of physical representations in CALMET on the simulated wind field over land during Super Typhoon Meranti (2016)
Impact of physical representations in CALMET on the simulated wind field over land during Super Typhoon Meranti (2016)
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CALMET 中的物理表示对超级台风莫兰蒂（2016 年）期间模拟陆地风场的影响
DOI：
10.1007/s11707-019-0769-5
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发表时间：
2019-08
影响因子：
2
通讯作者：
Chen Peiyan
中科院分区：
文献类型：
--
作者：
Huang Sui;Tang Shengming;Yu Hui;Xue Wenbo;Fang Pingzhi;Chen Peiyan
WRF（天气研究和预报模型）/CALMET（加利福尼亚气象模型）耦合系统用于研究 CALMETon 模拟超强台风莫兰蒂（2016）近地表风场的物理表示的影响。耦合系统的水平网格间距在 WRF 中配置为 3 km，在 CALMET 中配置为 500 m。通过将模拟结果与福建省981个自动地面站的观测数据进行比较，评估了WRF/CALMET耦合系统的模型性能。所有 CALMET 模拟中 10 m 处风速的均方根误差 (RMSE) 均明显小于 WRF 模拟的 20%–30%，这表明耦合的 WRF/CALMET 系统能够比仅中尺度模型表示更真实的模拟风速。 CALMET 中的阻挡效应、地形运动学效应和坡流等三种物理表征的影响在一个名为石蛇山的特定局部区域进行了检验。结果表明，台风登陆厦门前，石蛇山西侧由于阻挡作用，产生了大于10 m/s的与地形相切的净下坡流。然而，在台风登陆后的强风地区，阻挡效果似乎不起作用。无论是否受台风大风影响，由于当地热通量日变化幅度小于3 m/s，坡流夜间下坡，白天上坡。据推测，地形的运动学效应在台风强风区起重要作用，但只能应用于风场准非发散时稳定条件下的大气流动。
A WRF (Weather Research and Forecasting Model)/CALMET (California Meteorological Model) coupled system is used to investigate the impact of physical representations in CALMETon simulations of the near-surface wind field of Super Typhoon Meranti (2016). The coupled system is configured with a horizontal grid spacing of 3 km in WRF and 500 m in CALMET, respectively. The model performance of the coupled WRF/ CALMET system is evaluated by comparing the results of simulations with observational data from 981 automatic surface stations in Fujian Province. The root mean square error (RMSE) of the wind speed at 10 m in all CALMET simulations is significantly less than the WRF simulation by 20%–30%, suggesting that the coupled WRF/CALMET system is capable of representing more realistic simulated wind speed than the mesoscale model only. The impacts of three physical representations including blocking effects, kinematic effects of terrain and slope flows in CALMET are examined in a specified local region called Shishe Mountain. The results show that before the typhoon landfall in Xiamen, a net downslope flow that is tangent to the terrain is generated in the west of Shishe Mountain due to blocking effects with magnitude exceeding 10 m/s. However, the blocking effects seem to take no effect in the strong wind area after typhoon landfall. Whether being affected by the typhoon strong wind or not, the slope flows move downslope at night and upslope in the daytime due to the diurnal variability of the local heat flux with magnitude smaller than 3 m/s. The kinematic effects of terrain, which are speculated to play a significant role in the typhoon strong wind area, can only be applied to atmospheric flows in stable conditions when the wind field is quasi-nondivergent.
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影响因子：
4.3
作者：
T. W. Horst;J. Doran
通讯作者：
T. W. Horst;J. Doran
DOI：
10.1175/1520-0450(1980)019
发表时间：
1980-07
期刊：
Journal of Applied Meteorology
影响因子：
--
作者：
L. V. D. Auwera;F. Meyer;L. Malet
通讯作者：
L. V. D. Auwera;F. Meyer;L. Malet
影响因子：
6.3
作者：
A. Arakawa;Joon-Hee Jung;Chien‐Ming Wu
通讯作者：
A. Arakawa;Joon-Hee Jung;Chien‐Ming Wu
影响因子：
3.2
作者：
T. Yabe;R. Tanaka;T. Nakamura;F. Xiao
通讯作者：
T. Yabe;R. Tanaka;T. Nakamura;F. Xiao
影响因子：
3
作者：
Weiguo Wang;W. Shaw;T. Seiple;J. Rishel;Yulong Xie
通讯作者：
Weiguo Wang;W. Shaw;T. Seiple;J. Rishel;Yulong Xie