| 苏州—无锡—常州城市带热岛效应个例研究 |
| |
| 引用本文： | 康汉青,朱彬,朱彤,高晋徽,孙佳丽,苏继峰.苏州—无锡—常州城市带热岛效应个例研究[J].大气科学学报,2014,37(4):432-440. |
| |
| 作者姓名： | 康汉青 朱彬 朱彤 高晋徽 孙佳丽 苏继峰 |
| |
| 作者单位： | 南京信息工程大学气象灾害预报预警与评估协同创新中心;南京信息工程大学中国气象局气溶胶与云降水重点开放实验室;科罗拉多州立大学;NOAA/NESDIS/STAR/JCSDA;江苏省气候中心;中国人民解放军94857部队61分队; |
| |
| 基金项目： | 国家自然科学基金资助项目(41275143);公益性行业(气象)科研专项(201206011);江苏省高校自然科学研究重大基础研究项目(12KJA170003);江苏省“333”高层次人才培养工程项目;江苏省“六大人才高峰”计划项目 |
| |
| 摘 要： | 应用WRF(weather research and forecasting)及其耦合的多层城市冠层模式BEP(building energy parameterization),对2013年8月13日长江三角洲地区一次高温天气过程进行了模拟。此次过程盛行东南风,风向与苏州—无锡—常州城市带走向一致。模拟结果表明:苏州—无锡—常州城市带热岛效应明显,热岛强度向下游城市逐渐增加;在东南风作用下,三座城市的热岛连成一片,形成了一个更强大的热岛环流。夜晚,边界层逐渐趋于稳定,热岛环流减弱,有利于热岛温度向下游地区输送。热岛效应导致城市边界层高度明显上升。白天太湖产生强盛的湖风对其周边城市影响显著,来自太湖的冷气团导致无锡和常州边界层内热岛强度明显下降,抑制城市热岛向上发展,削弱了无锡与常州两城市热岛间的联系。白天太湖使得无锡和常州边界层高度明显下降。
|
| 关 键 词： | 城市热岛 数值模拟 太湖 大气边界层 |
| 收稿时间： | 2014/3/20 0:00:00 |
| 修稿时间： | 2014/5/28 0:00:00 |
Investigation of an urban heat island episode along Suzhou-Wuxi-Changzhou urban cluster |
| |
| KANG Han-qing,ZHU Bin,ZHU Tong,GAO Jin-hui,SUN Jia-li and SU Ji-feng.Investigation of an urban heat island episode along Suzhou-Wuxi-Changzhou urban cluster[J].大气科学学报,2014,37(4):432-440. |
| |
| Authors: | KANG Han-qing ZHU Bin ZHU Tong GAO Jin-hui SUN Jia-li and SU Ji-feng |
| |
| Institution: | Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, NUIST, Nanjing 210044, China;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, NUIST, Nanjing 210044, China;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, NUIST, Nanjing 210044, China;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, NUIST, Nanjing 210044, China;CIRA/Colorado State University, Fort Collins, CO, USA 80523-1375;NOAA/NESDIS/STAR/JCSDA, College Park, MD, USA 20746;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, NUIST, Nanjing 210044, China;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, NUIST, Nanjing 210044, China;Jiangsu Climate Center, Nanjing 210009, China;The 61 Squad of the 94857 Unit of People''s Liberation Army, Wuhu 241000, China |
| |
| Abstract: | The weather research and forecasting(WRF) model, coupled with a multi-layer urban canopy model BEP(building energy parameterization), is used to investigate a high temperature episode occurred in the Yangtze River Delta region on 13 August 2013.A southeasterly breeze, consistent with the direction of Suzhou-Wuxi-Changzhou urban cluster, is prevailed over the Yangtze River Delta region during the episode.Simulating results show that significant urban heat island(UHI) effects occur in the urban cluster, and the UHI intensity increases from Suzhou to Changzhou.Under the impact of the southeasterly breeze, the UHI effects of the three individual cities merge together, forming a stronger UHI circulation.In the night, the UHI circulation is weakened by the stable planetary boundary layer, which is favorable for the downstream transport of the UHI effect.The urban planetary boundary layer height is significantly increased by the UHI effect.During the daytime, a strong lake breeze between Lake Taihu and land has great impacts on the UHI of the nearby cities.Air temperature over Wuxi and Changzhou is significantly decreased by the cold air from Lake Taihu, and the upward extension of the UHIs over the two cities are suppressed.Connections of the UHIs between Wuxi and Changzhou are weakened by Lake Taihu.The planetary boundary layer height over Wuxi and Changzhou is more significantly decreased by the lake breeze during daytime. |
| |
| Keywords: | urban heat island numerical simulation Lake Taihu atmospheric boundary layer |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《大气科学学报》浏览原始摘要信息 |
| 点击此处可从《大气科学学报》下载免费的PDF全文 |
|
