uhi

UHI intensity is higher in night than in daytime under different weather conditions .

不同天气条件下，夜间城市热岛强度均高于白天；

The center of UHI is mainly distributed in the industrial land , commercial land and residential land-intensive areas .

城市热岛中心主要分布在工业用地、商业用地以及居住用地密集区域。

Research on Analysis of Summer Temperature and UHI Effect in Chongqing City

重庆市夏季气温及热岛效应分析研究

The differences of urban land also have effects on the UHI .

城市用地性质的差异对城市热岛也有不同程度的影响。

The UHI effect in winter maintain longer than in summer .

冬季热岛效应维持时间长于夏季。

Urban heat island ( UHI ) effect is an important climate impact caused by urbanization .

城市热岛效应是城市化对区域气候影响的重要方面。

These results would be significant for guiding urban green space planning and depressing UHI effect .

上述结果对城市绿地规划和缓解城市热岛效应具有较好的指导意义。

Anthropogenic heat emissions and air pollution are an important factors for the UHI .

人为热的排放以及空气污染是产生热岛的重要影响因素。

The influence of urban heat island on urban planning was analyzed based a simple summary of UHI .

在综合分析城市热岛效应的基础上，论述了城市热岛效应对城市规划的影响。

It is found from lots of domestic and foreign results that UHI effect exists in all cities .

国内外大量的研究结果表明，所有城市都存在城市热岛效应。

The changes of urban spatial pattern and the destruction of ecological environment aggravate the UHI .

城市空间格局的改变以及自然生态格局的破坏加剧了城市热岛效应。

Analyses on the Characteristics of Beijing Summer Urban Heat Island ( UHI ) and Its Meteorological Fields

北京市夏季城市热岛特征及其近地层气象场分析

Urban Heat Island ( UHI ) effect is one of the clearest impacts of human activity to climate system .

城市热岛现象是人类活动对气候系统产生的最显著的影响之一。

In case that wind speed was small in summer , UHI intensity was weakened with increasing wind speed .

夏季风速较小的情况下，热岛强度随风速增加而减弱。

The results provide theory base of using heat reflection and thermal resistance technology to decrease rut and mitigate UHI effect .

为应用热反射与热阻技术控制车辙病害和缓解热岛效应提供了理论基础。

During the same period , UHI expanded from center of the City to east , north and northwest areas .

1994年杭州市热岛集中在城中心，到了2004年，热岛范围已由城中心向杭州市西北部、北部和东部扩张；

The main results are as follows : ( 1 ) The UHI effect of Lanzhou is obvious , especially for minimum temperature .

主要结果如下（1）兰州城市热岛效应明显，并且热岛效应在最低气温上表现最显著。

Perform UHI characteristic analysis for Changsha based on the average data from multiple selected representative stations located in both urban and suburban areas .

选取具有代表性的城区和郊区多个站点的平均值对长沙城市热岛效应特征进行分析。

The result indicates that the probability of causing strong convective activity both in pure sea breeze and pure UHI is small .

结果表明，纯粹的海陆风环流或热岛环流触发对流天气的可能性不大。

The main reason of UHI intensity stronger in nighttime than in daytime is heating effect of urban surface long-wave radiation .

城市地表长波辐射的加热作用是造成城市热岛强度夜间强于白天的主要原因。

In the recent fifty years , the urbanization of Lanzhou has been development rapidly . Accordingly , Lanzhou has experienced a significant UHI effect .

近50年来，兰州市城市化进程加快，城市热岛效应显著。

Several aspects were analyzed to discuss the effect of UHI on urban planning including urban aerodynamics , urban forest , urban color , urban energy and urban scale .

城市热岛效应对城市空气动力学、城市森林规划、城市色彩规划、城市能源规划以及城市规模等方面都具有极大的影响。

Therefore , it is helpful to improve the thermal environment , reduce energy consumption , and make urban human settlements development sustainable by analyzing UHI qualitatively and quantitatively .

因此，对城市热岛效应进行定性、定量分析研究，有助于改善城市热环境、降低能源消耗、实现城市人居环境的可持续发展。

The results show that the UHI effect on air temperature change at Shijiazhuang station was very significant , with the effect on the minimum temperature trend being even more significant .

研究表明：石家庄热岛效应很明显，而且热岛效应在最低气温上表现更明显，且热岛强度呈显著增强趋势。

However , in summer when the prevailing flow is southern wind , the strengthening UHI is advantageous for occurring weak precipitation in northern suburb .

夏季盛行南风气流，随着城市热岛效应的增强，发生在北部近郊区的弱降水天气过程趋于增多。

Among all seasons , summer is the most and winter is the least . 4 . Analyze the relationship between UHI and urbanization process related data for Changsha .

利用长沙城市化进程有关数据，分析其与城市热岛强度的关系。

Perform systematic analysis on the UHI intensity tendency rate and UHI contribution rate to the temperature increase using three types of temperature tendency rate for both urban and suburban areas .

利用城区和郊区3种温度的倾向率分析了城市热岛强度倾向率和热岛增温贡献率。

Under the heavy rain condition , UHI intensity is the lowest in spring , and under the other precipitation conditions , it is the lowest in summer .

除大雨条件下春季城市热岛强度最弱外，其他条件下均为夏季最弱。

The excess mortality in the downtown area is bigger than that in the rural area , which is closely associated with urban heat island ( UHI ) index .

热浪期间市区超额死亡率要远大于郊区，超额死亡率的地区分布特征和城市热岛强度指数有着密切的联系。

It has very important significance to conduct researches on the UHI of mountainous cities for planning the rational city population , improving the resident environment and reducing the energy consumption .

特别是研究山地城镇的热岛效应对如何规划山地城镇用地结构的合理空间布局、改善人居环境和节约能源等有着重要意义。