长江流域资源与环境 >> 2018, Vol. 27 >> Issue (09): 2078-.doi: 10.11870/cjlyzyyhj201809018

•  • 上一篇    下一篇

2015年冬季苏州城市热岛特征研究

何松蔚1,王成刚1*,姜海梅1,曹乐1,王新伟2   

  1. (1.南京信息工程大学大气物理学院,江苏 南京 210044;2.河南省气象局河南省气象服务中心,河南 郑州 450003)
  • 出版日期:2018-09-20 发布日期:2018-11-09

Research on the Characteristics of Urban Heat Island Effect in Suzhou in the Winter of 2015

HE Songwei, WANG Chenggang, JIANG Haimei, CAO Le, WANG Xinwei   

  1. (1.Nanjing University of Information Science and Technology, School of Atmospheric Physics, Nanjing 210044, China;2.Henan Meteorological Bureau, Henan Meteorological Service Center, Zhengzhou 450003, China)
  • Online:2018-09-20 Published:2018-11-09

摘要: 基于Landsat土地利用类型分类资料、夜间灯光影像资料、自动气象站资料以及大气边界层探测资料,划分出城市、郊区以及湖区代表站,分析了苏州2015年1月城市热岛日变化、昼夜差异特征以及城、湖温度差日变化特征,并对苏州城市热岛分布特征以及城、湖大气边界层结构差异进行分析。结果显示:(1)白天热岛强度小,09~17时热岛强度均小于1℃,最小值仅为02℃;夜间热岛强度大,19~05时热岛强度维持在12℃以上,最大值为17℃。(2)城、湖温差白天为正,夜间为负,市区变温速率比湖区快约02℃/h。(3) 苏州白天热中心形状不规则,范围大,城郊温差小,夜间形成单一封闭稳定热中心,热中心形状与市区有较好对应,城、郊温差维持在15℃左右。冬季地面盛行西北风,太湖湖陆风现象显著,湖陆风和盛行风向共同影响城市热羽向西南方向发展。(4)城、湖虚位温廓线在白天差异小,均有不稳定边界层形成,夜间市区仍维持不稳定边界层,而湖区有稳定边界层发展,近地层内干岛效应显著。(5)城市热岛影响范围有明显日变化特征,白天城市热岛影响范围小于40 m,夜间大于200 m。

Abstract: Based on the classification data of landuse pattern from Landsat, nighttime light image data, automatic meteorological stations data and atmospheric boundary layer (ABL) sounding data, the representative stations of urban area, rural area, and lake were chosen for the urban heat island (UHI) analysis. The characteristics of UHI in Suzhou in January 2015 were studied in this paper. The result showed that: (1) UHI intensity was weak at daytime, which was less than 10℃ from 09 am. to 05 pm., with the minimum of only 02℃. UHI intensity was strong at night, which maintained above 12℃, with the maximum of 17℃. (2) The temperature difference between urban area and lake was positive at daytime and negative at night. Temperature variation rate of urban stations was about 02℃/h faster than that of lake stations. (3) The shape of heat center was irregular and has a large range at daytime, and the temperature difference between urban and rural area was small in Suzhou. However, at night the temperature difference between urban and rural area maintained at about 15℃,and a single, closed and stable heat center was formed, which was in correspondence with that in downtown area. The northwest wind was prevalent on the ground in winter, and Taihu lakeland wind was obvious in Suzhou. The combined action of lakeland wind and prevailing wind jointly transferred the urban thermal plume to the southwest. (4) The difference of virtual potential temperature profiles between urban and lake was small, and unstable ABL developed both in urban and lake area at daytime. However, at night, unstable ABL profiles were still maintained in urban area, and stable ABL profiles developed in lake area. In the meantime, the phenomenon of wetisland near ground surface was obvious. (5) The influence of UHI in vertical direction has significant diurnal variation, which was less than 40m at daytime, and more than 200m at night.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 黄俊雄; 徐宗学. 太湖流域1954~2006年气候变化及其演变趋势[J]. 长江流域资源与环境, 2009, 18(1): 33 .
[2] 沈德福,史学正,吕成文,于东升. 江苏沿江地区土壤肥力空间分布及其区域对比研究[J]. 长江流域资源与环境, 2005, 14(3): 316 -321 .
[3] 张榆霞,刘嘉麒,王立前. 漫湾电站建成后澜沧江下游水质变化[J]. 长江流域资源与环境, 2005, 14(4): 501 -506 .
[4] 解晓南,许朋柱,秦伯强. 太湖流域苏锡常地区地面沉降若干问题探析[J]. 长江流域资源与环境, 2005, 14(1): 125 -131 .
[5] 彭长青,冯金飞,卞新民. 基于遗传算法和GIS的县域水田种植制度空间布局优化[J]. 长江流域资源与环境, 2006, 15(1): 66 -70 .
[6] 罗专溪,张 远,郑丙辉,富 国,陆兆华. 三峡水库蓄水初期水生态环境特征分析[J]. 长江流域资源与环境, 2005, 14(6): 781 -784 .
[7] 王晓青,李哲,吕平毓,郭劲松. 三峡库区悬移质泥沙对磷污染物的吸附解吸特性[J]. 长江流域资源与环境, 2007, 16(1): 31 -36 .
[8] 邹 君| 谢小立. 亚热带丘岗区地表水资源脆弱性评估及其管理——以衡阳盆地为例[J]. 长江流域资源与环境, 2007, 16(3): 303 .
[9] 张 政, 付融冰| 杨海真, 顾国维. 水量衡算条件下人工湿地对有机物的去除[J]. 长江流域资源与环境, 2007, 16(3): 363 .
[10] 向悟生, 李先琨, 何成新, 吕仕洪, 陆树华. 石漠化山地复合生态系统评价——以广西平果县龙何屯生态重建示范区为例[J]. 长江流域资源与环境, 2007, 16(6): 826 .