上海交通大学学报

上海交通大学学报 ›› 2019, Vol. 53 ›› Issue (8): 891-897.doi: 10.16183/j.cnki.jsjtu.2019.08.001

• 学报（中文） •    下一篇

上海地区夏季地表热通量特征及其影响因素

陆一凡1，李勇1，SHIGETOSHI Ipposhi 2，YASUMITSU Nomura 2，王如竹1   

  1. 1. 上海交通大学 制冷与低温工程研究所， 上海 200240； 2. 三菱电机公司 先进技术研发中心， 兵库县 661-8661, 日本
  • 出版日期:2019-08-28 发布日期:2019-09-10
  • 通讯作者: 李勇，男，副教授，博士生导师，电话（Tel.）:021-34206056；E-mail：liyo@sjtu.edu.cn.
  • 作者简介:陆一凡（1993-），男，江苏省海门市人，硕士生，主要研究方向为地源热泵及其与微气候的关系.
  • 基金资助:
    国家自然科学基金国际(地区)合作与交流项目（51561145012）

Characteristics of Surface Heat Flux in Shanghai During Summer and Its Influencing Factors

LU Yifan 1，LI Yong 1，SHIGETOSHI Ipposhi 2，YASUMITSU Nomura 2，WANG Ruzhu 1   

  1. 1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Advanced Technology R&D Center, Mitsubishi Electric Corporation, Hyogo 661-8661, Japan
  • Online:2019-08-28 Published:2019-09-10

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摘要： 通过土壤温度预报校正(TDEC)法验证了地表下5mm处测量土壤热通量的准确性，并以此代表地表热通量.总结了上海地区3种典型日(晴天、多云、雨天)地表下5mm处土壤热通量的日变化情况，并通过控制变量法综合分析不同因素(太阳辐射量、土壤含水量、云量等)对土壤热通量的影响.结果表明：土壤热通量的波动晴天时最剧烈，波动范围为 -23.62～111.81W/m2；随着土壤深度的递减，土壤热通量在多云和雨天的波动范围依次减小；未下雨时太阳辐射量与土壤热通量之间的相关性较强(R2>0.74)；土壤热通量的波动范围随土壤含水量的增加而缩小；在不同典型日，土壤热通量受到不同因素的影响.

关键词: 地表热通量； 太阳辐射量； 土壤含水量； 土壤温度预报校正法； 典型日

Abstract: The test accuracy of soil heat flux at 5 mm is verified through thermal diffusion equation-correction (TDEC) method, which can represent the surface heat flux. Meanwhile, considering different factors (solar radiation, soil moisture content and cloud cover, etc.), the diurnal variations of heat flux on three kinds of typical days (clear, cloudy and rainy days) are summarized in Shanghai. The influence of different factors on soil heat flux at 5mm and the principles are comprehensively analyzed through variable control approaches. The results show that soil heat flux at 5 mm obviously fluctuates on clear days, from -23.62W/m2 to 111.81W/m2. The fluctuation range decreases with the decrease of soil depth on cloudy and rainy days. The correlation (R2>0.74) between solar radiation and soil heat flux is strong on days without rain. The fluctuation range of soil heat flux is reduced by the increase of soil moisture content. Soil heat flux of different typical days is mostly affected by different factors.

Key words: surface heat flux; solar radiation; soil moisture content; thermal diffusion equation-correction (TDEC) method; typical days

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