徐伟新 教授/博导
基本情况
中山大学教授，博士研究生导师。2011年获美国犹他大学博士学位。主要从事中小尺度气象、热带气象、气象遥感等方面的研究，包括台风、强对流、极端降水、雷电等灾害天气的研究。近年来，主持了中国自然科学基金以及广东省科技厅等近10项科研项目/课题。已发表高水平SCI学术论文40余篇，论文被他人引用1500多次，其中，极端降水研究被Science杂志亮点报道，台风研究被AGU主编评为亮点。已指导研究生10余名，所指导学生获得校级优秀博士论文、博士生国家奖学金、中山大学“逸仙学术之星”等荣誉。
教育经历
2006.8 – 2011.8: 美国犹他大学，博士
2000.9 – 2004.7: 兰州大学，学士
工作经历
2018.12 – 迄今: 中山大学大气科学学院，教授
2013.6 –2018.11: 科罗拉多州立大学，博士后、研究员II级、III级
2011.8 – 2013.3：马里兰大学，博士后
代表性论著 (*通讯作者，#指导学生）
Zhang, X.#, W. Xu*, 2023: Diurnal Variations on the Initiation Time and Intensification Rate of Rapidly Intensifying Tropical Cyclones. Geophy. Res. Lett., 50, e2023GL103551.
Zhang, X. #, S. Ditchek, K. Corbosiero, and W. Xu*, 2023: Global and regional characteristics of radially outward propagating tropical cyclone diurnal pulses. J. Geophy. Res., 128, e2022JD037660.
Xu, W*, H. Chen#, H. Wei, Y. Luo, T. Zhao, 2022: Extreme Precipitation Produced by Relatively Weak Convective Systems in the Tropics and Subtropics, Geophy. Res. Lett., 49, e2022GL098048 Research highlight in Science magazine.
Zhang, X.#, W. Xu*, 2022: Is There an Outward Propagating Diurnal Signal in the Precipitation of Tropical Cyclones. Geophy. Res. Lett., 49, e2021GL094773.
Zhang, X.#, W. Xu*, 2021: Strong Diurnal Pulsing of Cold Clouds in Rapidly Intensifying Tropical Cyclones. Geophy. Res. Lett., 48, e2021GL094773.
Zhang, X.#, W. Xu*, , 2021: Diurnal Variations in Rainfall and Precipitation Asymmetry of Tropical Cyclones in the Northwest Pacific Region. J. Climate, 34, 5565-5582.
Xu, W., S. Rutledge, K. Chudler, 2021: Diurnal Cycle of Coastal Convection in the South China Sea Region and Modulation by the BSISO. J. Climate, 34, 4297-4314.
Chudler, K.#, W. Xu, and S. Rutledge, 2020: Impact of the Boreal Summer Intraseasonal Oscillation on the Diurnal Cycle of Precipitation near and over the Island of Luzon. Mon. Wea. Rev., 148, 1805-1827.
Xu, W., 2020: Thunderstorm climatologies and their relationships to total and extreme precipitation in China. J. Geophy. Res., 125, e2020JD033152.
Xu, W., S. A. Rutledge, 2018: Convective Variability associated with the Boreal Summer Intraseasonal Oscillation in the South China Sea Region. J. Climate, doi:10.1175/JCLI-D-18-0091, 31, 7363-7383.
Xu, W., S. A. Rutledge, W. Zhang, 2017: Relationships between Total Lightning, Deep Convection, and Tropical Cyclone Intensity Change. J. Geophy. Res., 122, 7047-7063, (AGU’s Editor-highlighted article).
Xu, W., and S. A. Rutledge, 2016: Time Scales of Shallow-to-Deep Convective Transition associated with the Onset of Madden-Julian Oscillation. Geophy. Res. Lett., 43, 2880-2888.
Xu, W., S. A. Rutledge, C. Schumacher, and M. Katsumata, 2015: Evolution, Properties, and Spatial Variabilityof MJO Convection near and off the Equator during DYNAMO.J. Atmos. Sci.,72, 4126-4147.
Xu, W., H. Jiang, and X. Kang, 2014:Rainfall AsymmetriesofTropical Cyclones Prior to, During, and After Making Landfallin South China and Southeast United States. Atmos. Res.,139, 18-26.
Xu, W., 2013: Precipitation and Convective Characteristics of Summer Deep Convection over East Asia Observed by TRMM.Mon. Wea. Rev., 141, 1577-1592.
Xu, W., E. J. Zipser, and coauthors, 2012: An Orography-associated Extreme Rainfall Event during TiMREX: Initiation, Storm Evolution, and Maintenance. Mon. Wea. Rev., 140, 2555–2574.
Xu, W., and E. J. Zipser, 2012: Properties of Deep Convection in Tropical Continental, Monsoon, and Oceanic Rainfall Regimes. Geophys. Res. Lett., 39, L07802, doi:10.1029/2012GL051242.
Xu, W., and E. J. Zipser, 2011: Diurnal Variations of Precipitation, Deep Convection and Lightning over and East of the Eastern Tibetan Plateau.J. Climate,24, 448-465,doi:10.1175/2010JCLI3719.1.
Xu, W., E. J. Zipser, C. Liu, and H. Jiang, 2010: On the Relationships between Lightning Frequency and Thundercloud Parameters of Regional Precipitation Systems. J. Geophys. Res., 115, D12203, doi:10.1029/2009JD013385.
Xu, W., E. J. Zipser, and C. Liu, 2009: Rainfall Characteristics and Convective Properties of Mei-Yu Precipitation Systems over South China, Taiwan, and South China Sea. Part I: TRMM observations. Mon.Wea.Rev., 137, 4261-4275.
最新研究
1. 暖雨过程对极端降水的贡献 (被Science杂志亮点报道)
传统观念认为极端降水主要由极端对流造成，然而，最近许多研究指出，只有10-30%的极端降水由极端对流贡献。我们进一步研究发现，弱对流系统对极端降水有着重要的贡献（陆地上20-30%；海洋上>50%）。这些系统的极端降水主要由异常活跃的暖雨过程造成，而非通过显著的冰相过程（大量冰相粒子下落融化为雨滴）。
Xu, W*, H. Chen#, H. Wei, Y. Luo, T. Zhao, 2022: Extreme Precipitation Produced by Relatively Weak Convective Systems in the Tropics and Subtropics, Geophy. Res. Lett., e2022GL098048.
Yu, S., Luo, Y., Wu, C., Zheng, D., Liu, X., & Xu, W. (2022). Convective and microphysical characteristics of extreme precipitation revealed by multisource observations over the Pearl River Delta at monsoon coast. Geophysical Research Letters, 49, e2021GL097043.
该研究成果发表后被Science 杂志选为研究亮点（research highlight）进行报道, 题为“EXTREME PRECIPITATION, Overlook not the weak”：
"Although extreme rainfall typi- cally is thought of as being the result of dramatic storms with intense convection, it also can accompany weak convection events. Xu et al. used satellite data from 1998–2014 to show that these weakly convecting extreme precipitation events are as frequent as ones with strong convection globally, each type making up nearly one- third of the total over land. The authors compare and contrast the relative contributions of the two types of extreme rainfall regimes and their geographic distributions and discuss the differences in their dynamic structures and storm environ- ments. These insights should help to improve both our theoretical and observational understanding of extreme rain- fall events." —HJS Geophys. Res. Lett. 49, 2022GL098048 (2022).
Science 报道连接（“EXTREME PRECIPITATION, Overlook not the weak”）：
2. 台风深对流日变化波动与气旋增强的关系
最新研究发现，TC增强速率与前24小时(或同步24小时)的云顶日变化波动发生频率及时长呈现显著的正相关关系；急剧增强TC中较强日变化波动事件（时长9-15小时）的频率和持续时间明显高于缓慢增强或者减弱的TC。
Zhang, X.#, W. Xu*, 2021: Strong Diurnal Pulsing of Cold Clouds in Rapidly Intensifying Tropical Cyclones. Geophy. Res. Lett. I48, e2021GL094773.
日变化信号传播事件中，降水与高层冷云以及深层次的冰相过程耦合，表明日变化波动发生在整个深对流层次而非仅限于云顶。更重要的是，当降水传播事件发生时，TC中心附近的降水量和对流强度显著增加。总之，对流日变化波动对TC强度变化具有重要的指示意义，为TC强度变化研究提供了一个新的视角，同时也为TC强度预报提供了参考和借鉴。
Zhang, X.#, W. Xu*, 2022: Is There an Outward Propagating Diurnal Signal in the Precipitation of Tropical Cyclones. Geophy. Res. Lett., e2021GL094773.
招聘信息
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因课题组发展的需要，现面向海内外公开招聘多名博士后和研究员系列人员。
