Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1917554117 |
Seasonal hysteresis of surface urban heat islands | |
Manoli, Gabriele1; Fatichi, Simone2; Bou-Zeid, Elie4; Katul, Gabriel G.5 | |
2020-03-31 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:13页码:7082-7089 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Switzerland; Singapore; USA |
英文摘要 | Temporal dynamics of urban warming have been extensively studied at the diurnal scale, but the impact of background climate on the observed seasonality of surface urban heat islands (SUHIs) remains largely unexplored. On seasonal time scales, the intensity of urban-rural surface temperature differences (Delta T-s) exhibits distinctive hysteretic cycles whose shape and looping direction vary across climatic zones. These observations highlight possible delays underlying the dynamics of the coupled urban-biosphere system. However, a general argument explaining the observed hysteretic patterns remains elusive. A coarse-grained model of SUHI coupled with a stochastic soil water balance is developed to demonstrate that the time lags between radiation forcing, air temperature, and rainfall generate a rate-dependent hysteresis, explaining the observed seasonal variations of Delta T-s. If solar radiation is in phase with water availability, summer conditions cause strong SUHI intensities due to high rural evaporative cooling. Conversely, cities in seasonally dry regions where evapotranspiration is out of phase with radiation show a summertime oasis effect controlled by background climate and vegetation properties. These seasonal patterns of warming and cooling have significant implications for heat mitigation strategies as urban green spaces can reduce Delta T-s during summertime, while potentially negative effects of albedo management during winter are mitigated by the seasonality of solar radiation. |
英文关键词 | cities hysteresis seasonality surface temperature urban heat island |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000523188100024 |
WOS关键词 | LOCAL BACKGROUND CLIMATE ; STOMATAL CONDUCTANCE ; DIURNAL PATTERNS ; MODEL ; ENERGY ; WATER ; EVAPOTRANSPIRATION ; VEGETATION ; VARIABILITY ; GREEN |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249636 |
专题 | 资源环境科学 |
作者单位 | 1.UCL, Dept Civil Environm & Geomat Engn, London WC1E 6BT, England; 2.Eidgenossisc Tech Hsch Zurich, Inst Environm Engn, CH-8093 Zurich, Switzerland; 3.Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore; 4.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA; 5.Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA |
推荐引用方式 GB/T 7714 | Manoli, Gabriele,Fatichi, Simone,Bou-Zeid, Elie,et al. Seasonal hysteresis of surface urban heat islands[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(13):7082-7089. |
APA | Manoli, Gabriele,Fatichi, Simone,Bou-Zeid, Elie,&Katul, Gabriel G..(2020).Seasonal hysteresis of surface urban heat islands.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(13),7082-7089. |
MLA | Manoli, Gabriele,et al."Seasonal hysteresis of surface urban heat islands".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.13(2020):7082-7089. |
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