| 不同水汽环境条件下云凝结核浓度对热带气旋发展影响的数值研究 |
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| 引用本文： | 庆涛,黄绮君,沈澄,朱磊,葛旭阳.不同水汽环境条件下云凝结核浓度对热带气旋发展影响的数值研究[J].气象科学,2023,43(3):305-315. |
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| 作者姓名： | 庆涛 黄绮君 沈澄 朱磊 葛旭阳 |
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| 作者单位： | 江苏省气象信息中心, 南京 210008;南京信息工程大学 气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室, 南京 210044;南京市气象局, 南京 210019 |
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| 基金项目： | 江苏省气象局面上资助项目(KM202207);南京市气象局自主科研资助项目(NJ202307);江苏省研究生科研创新计划项目(KYCX22_1134);江苏省气象局预报员专项(JSYBY201805) |
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| 摘 要： | 利用WRF模式模拟在清洁海洋大气和污染大气环境下,气溶胶的云凝结核浓度(Cloud Condensation Nuclei, CCN)对热带气旋的强度变化影响。在污染环境下,云凝结核浓度增多,台风区域云水混合物浓度增大,眼墙附近上升运动减小,而台风外围螺旋雨带对流发展,从而抑制低层入流,台风强度减弱,外围尺度增大。在不同环境场水汽条件下,通过热、动力结构和云微物理量的对比分析,结果表明:环境场水汽条件对台风的发展起到至关重要的作用。当环境场水汽条件较干时,CCN浓度对台风发展影响作用不明显,台风发展缓慢。而在充足水汽条件下,CCN浓度对热带气旋发展有明显的影响。本文结果表明,在考虑污染情形下台风变化,需要综合考虑环境场水汽条件。
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| 关 键 词： | 热带气旋 云凝结核 水汽 强度变化 |
| 收稿时间： | 2022/8/26 0:00:00 |
| 修稿时间： | 2022/9/2 0:00:00 |
The impacts of cloud condensation nuclei on tropical cyclone development with different ambient moisture based on the numerical simulations |
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| QING Tao,HUANG Qijun,SHEN Cheng,ZHU Lei,GE Xuyang.The impacts of cloud condensation nuclei on tropical cyclone development with different ambient moisture based on the numerical simulations[J].Scientia Meteorologica Sinica,2023,43(3):305-315. |
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| Authors: | QING Tao HUANG Qijun SHEN Cheng ZHU Lei GE Xuyang |
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| Institution: | Jiangsu Meteorological Information Center, Nanjing 210008, China;Key Laboratory of Meteorological Disaster, Ministry of Education, Joint International Research Laboratory of Climate and Environment Change, Nanjing University of Information Science & Technology, Nanjing 210044, China;Nanjing Meteorological Service, Nanjing 210019, China |
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| Abstract: | In this study, the impacts of different numbers of Cloud Condensation Nuclei (CCN) on the Tropical Cyclone (TC) development was investigated by using idealized numerical simulation. It is found that, the larger CCN inhabits TC development. Namely, the TC has a weaker intensity but larger outer size, which agrees with the previous studies. However, this impact is highly sensitive to the environmental moisture condition. Under a moist ambient condition, the impacts of CCN are much pronounced. In a dry environment, the influence of CCN is quite weaker. This suggests that the moisture is vital to the TC development, which is should be taken into consideration the cooperative impacts of CCN and moisture in the operational forecasting. |
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| Keywords: | TC CCN moisture intensity change |
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