Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.landurbplan.2016.09.012 |
Intense summer heat fluxes in artificial turf harm people and environment | |
Jim, C. Y. | |
2017 | |
发表期刊 | LANDSCAPE AND URBAN PLANNING |
ISSN | 0169-2046 |
EISSN | 1872-6062 |
出版年 | 2017 |
卷号 | 157 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Artificial turf (AT) sports fields have increasingly replaced natural turf (NT). High AT material-cum-air temperature incurs heat-stress impacts on athletes, demanding better understanding of thermal regimes vis--vis weather conditions. Adjacent AT and NT sites in humid-tropical Hong Kong were studied. Four radiant-energy components (direct-solar, reflected-solar, sky-thermal, ground-thermal) and five temperature levels (150, 50 and 15 cm, turf-surface, substrate) were monitored in replicate, for three summer weather conditions (sunny, cloudy, overcast). Inter-site differences are attributed to lower AT albedo, admitting more shortwave and emitting more longwave radiant energy. Drastic decline in solar fluxes contrasts with terrestrial fluxes which remain intense. AT materials, with low specific heat and moisture and scanty evapotranspiration, induce fast warming and cooling with little time lag to synchronize with insolation rhythm. On sunny day, AT turf-surface, heated to 72.4 degrees C comparing with NT at 36.6 degrees C, dissipates heat by conduction and convection to near-ground air and by strong ground-thermal emission. Exceeding the heat-stress threshold most of the time, AT cools quickly from late afternoon for heat-safe use soon after sunset. On cloudy day, subdued AT heating allows earlier cooling in late afternoon. Both sites are heat-safe on overcast day. The findings can optimize game scheduling to prevent heat-related injuries. (C) 2016 Elsevier B.V. All rights reserved. |
英文关键词 | Natural and artificial turf Solar and terrestrial radiation Radiant flux ratio Aggregate thermal index Energy budget tipping-point Solar-induced thermal divergence |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000390183300052 |
WOS关键词 | HONG-KONG ; TEMPERATURES ; ILLNESS ; SYSTEMS |
WOS类目 | Ecology ; Environmental Studies ; Geography ; Geography, Physical ; Regional & Urban Planning ; Urban Studies |
WOS研究方向 | Environmental Sciences & Ecology ; Geography ; Physical Geography ; Public Administration ; Urban Studies |
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/25431 |
专题 | 资源环境科学 |
作者单位 | Univ Hong Kong, Dept Geog, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China |
推荐引用方式 GB/T 7714 | Jim, C. Y.. Intense summer heat fluxes in artificial turf harm people and environment[J]. LANDSCAPE AND URBAN PLANNING,2017,157. |
APA | Jim, C. Y..(2017).Intense summer heat fluxes in artificial turf harm people and environment.LANDSCAPE AND URBAN PLANNING,157. |
MLA | Jim, C. Y.."Intense summer heat fluxes in artificial turf harm people and environment".LANDSCAPE AND URBAN PLANNING 157(2017). |
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