尺度相互作用对西北太平洋热带气旋生成频数的影响分析
Influence of Scale Interaction on Tropical Cyclone Genesis Number over the Western North Pacific
摘要: 根据日本气象厅区域专业气象中心–东京台风中心(Regional Specialized Meteorological Center，RSMC)提供的热带气旋(Tropical cyclone, TC)最佳路径数据集，对盛期(7~10月)生成于西北太平洋的TC进行了统计，探究了其在年际上的差异及其产生原因。研究发现在TC生成频数异常偏高年，南海–菲律宾(10˚N~20˚N，110˚E~130˚E)和西北太平洋中东部(15˚N~25˚N，140˚E~170˚E) TC生成频数显著增多的主要原因是大尺度背景低频环流，季节内振荡(Intra-seasonal Oscillation, ISO)和天气尺度涡(Synoptic Scale Eddy, SSE)三者之间的正压能转换造成的。在南海–菲律宾地区，大尺度背景环境因子占主导作用，大尺度背景低频环流与SSE间的正压能转换导致SSE动能加强。该区对流层低层相对涡度和中层异常上升运动，为TC和SSE的生成发展提供了有利动力条件。而在西北太平洋中东部地区，季节内振荡(Intra-seasonal Oscillation, ISO)活动加强，伴随有利的动力条件，如低层较大的相对涡度和较小的垂直风切变，使得SSE从大尺度低频环流中获得正压能，导致该区SSE生成发展，TC生成频数增多。
Abstract: Based on the best-track data of tropical cyclone (TC) provided by Regional Specialized Meteorologi-cal Center-Tokyo Typhoon Center of Japan Meteorological Agency (RSMC), a statistical analysis of TC genesis number was made and the reason for its difference on interannual scale was discussed. Results indicated that, during extreme high years of TC genesis number, the barotropic energy converted between large-scale low-frequency circulation, intra-seasonal oscillation (ISO) and syn-optic scale eddy (SSE) increased more TC over South China Sea-Philippines and eastern part of the Western North Pacific. As for the region of South China Sea-Philippines, large-scale background environmental factors played a dominant role. The barotropic energy conversion between large-scale background low-frequency circulation and SSE leads to the enhancement of SSE kinetic energy. The relative vorticity in the lower troposphere and the anomalous ascending motion in the middle troposphere provided favorable dynamic conditions for the generation and development of TC and SSE. As for the region of eastern part of the Western North Pacific, with the strengthened ISO activi-ty and favorable dynamic conditions, such as increased relative vorticity, anomalous ascending motion and decreased vertical wind shear, SSE obtained more barotropic energy from large-scale low-frequency circulation, which benefited the generation and development of SSE, and further led to more TC generate over this region.
文章引用：徐梦翔. 尺度相互作用对西北太平洋热带气旋生成频数的影响分析[J]. 气候变化研究快报, 2019, 8(4): 525-537. https://doi.org/10.12677/CCRL.2019.84057

参考文献

[1] 陈光华, 黄荣辉. 西北太平洋热带气旋和台风活动若干气候问题的研究[J]. 地理科学进展, 2006, 21(6): 610-616.
[2] 冯涛, 黄荣辉, 陈光华, 等. 今年来关于西北太平洋热带气旋和台风活动的气候学研究进展[J]. 大气科学, 2013, 37(2): 364-382.
[3] 牛海燕, 刘敏, 陆敏, 等. 中国沿海地区台风灾害损失评估研究[J]. 灾害学, 2011, 26(3): 61.
[4] Lorenz, E.N. (1995) Available Potential Energy and the Maintenance of the General Circulation. Tellus, 7, 157-167. [Google Scholar] [CrossRef] 
[5] 赵海坤, 吴立广. 西北太平洋热带气旋气候变化的若干研究进展[J]. 气象科学, 2015, 35(1): 108-118.
[6] Murakami, S. (2011) Atmospheric Local Energetics and Energy Interactions between Mean and Eddy Fields. Part 1: Theory. Journal of the Atmospheric Sciences, 68, 760-768. [Google Scholar] [CrossRef] 
[7] Zehr, R.M. (1992) Tropical Cyclogenesis in the Western North Pacific. NOAA Technical Report NESDIS 61,181 p.
[8] Chang, C.-P., Chen, J.M., Harr, P.A., et al. (1996) North-Westward-Propagating Wave Patterns over the Tropical Western North Pacific during Summer. Monthly Weather Review, 124, 2245-2266. [Google Scholar] [CrossRef] 
[9] Maloney, E.D. and Hartmann, D.L. (2001) The Madden-Julian Oscillation, Barotropic Dynamics, and North Pacific Tropical Cyclone Formation. Part I: Observations. Journal of the Atmospheric Sciences, 58, 2545-2558. [Google Scholar] [CrossRef] 
[10] Maloney, E.D. and Dickinson, M.J. (2003) The Intra-Seasonal Oscillation and the Energetics of Summertime Tropical Western North Pacific Synoptic-Scale Disturbances. Journal of the Atmospheric Sciences, 60, 2153-2168. [Google Scholar] [CrossRef] 
[11] Hsu, P.-C., Tsou, C.-H., Hsu, H.-H., et al. (2009) Eddy Energy along the Tropical Storm Track in Association with ENSO. Journal of the Meteorological Society of Japan, 87, 687-704. [Google Scholar] [CrossRef] 
[12] Hsu, H.-H., Hung, C.H., Lo, A.K., et al. (2008) Influence of Tropical Cyclones on the Estimation of Climate Variability in the Tropical Western North Pacific. Journal of Climate, 21, 2960-2975. [Google Scholar] [CrossRef] 
[13] Hsu, P.-C., Li, T. and Tsou, C.-H. (2011) Interaction between Boreal Summer In-tra-Seasonal Oscillations and Synoptic-Scale Disturbances over the Western North Pacific. Part I: Energetics Diagnosis. Journal of Climate, 24, 927-941. [Google Scholar] [CrossRef] 
[14] Tsou, C.-H., Hsu, H.-H. and Hsu, P.-C. (2014) The Role of Multiscale Interaction in Synoptic-Scale Eddy Kinetic Energy over the Western North Pacific in Autumn. Journal of Climate, 27, 3750-3765. [Google Scholar] [CrossRef] 
[15] Hsu, P.-C., Lee, T.-H., Tsou, C.-H., et al. (2017) Role of Scale Interactions in the Abrupt Change of Tropical Cyclone in Autumn over the Western North Pacific. Climate Dynamics, 49, 3175-3192. [Google Scholar] [CrossRef] 
[16] 李雪, 任福民, 杨修群, 等. 南海和西北太平洋热带气旋活动的区域性差异分析[J]. 气候与环境研究, 2011, 15(4): 504-510.
[17] Duchon, C.E. (1979) Lanczos Filtering in One and Two Dimensions. Journal of Applied Meteorlogy, 18, 1016-1022. [Google Scholar] [CrossRef] 
[18] Hu, F., Li, T., Liu, J., et al. (2018) Decrease of Tropical Cyclone Genesis Frequency in the Western North Pacific since 1960s. Dynamics of Atmospheres and Oceans, 81, 42-50. [Google Scholar] [CrossRef] 
[19] Hong, C.C., Tsou, C.-H., Lee, M.-Y., et al. (2018) Effect of ISO-SSE Interaction on Accelerating the TS to Severe TS Development in the WNP since the Late 1990s. Geophysical Research Letters, 45, 12008-12014. [Google Scholar] [CrossRef] 
[20] Choi, Y., Ha, K.J., Ho, C.H., et al. (2015) Interdecadal Change in Typhoon Genesis Condition over the Western North Pacific. Climate Dynamics, 45, 3243-3255. [Google Scholar] [CrossRef] 
[21] Orlanski, I. and Sheldon, J.P. (1993) A Case of Downstream Baroclinic Devel-opment over Western North America. Monthly Weather Review, 121, 292-295. [Google Scholar] [CrossRef] 

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