A New Estimation of Urbanization’s Contribution to the Warming Trend in ChinaSource: Journal of Climate:;2015:;volume( 028 ):;issue: 022::page 8923DOI: 10.1175/JCLI-D-14-00427.1Publisher: American Meteorological Society
Abstract: he extent to which an urbanization effect has contributed to climate warming is under debate in China. Some previous studies have shown that the urban heat island (UHI) contribution to national warming was substantial (10%?40%). However, by considering the spatial scale of urbanization effects, this study indicates that the UHI contribution is negligible (less than 1%). Urban areas constitute only 0.7% of the whole of China. According to the proportions of urban and rural areas used in this study, the weighted urban and rural temperature averages reduced the estimated total warming trend and also reduced the estimated urban effects. Conversely, if all stations were arithmetically averaged, that is, without weighting, the total warming trend and urban effects will be overestimated as in previous studies because there are more urban stations than rural stations in China. Moreover, the urban station proportion (68%) is much higher than the urban area proportion (0.7%).
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contributor author | Wang, Fang | |
contributor author | Ge, Quansheng | |
contributor author | Wang, Shaowu | |
contributor author | Li, Qingxiang | |
contributor author | Jones, Philip D. | |
date accessioned | 2017-06-09T17:10:52Z | |
date available | 2017-06-09T17:10:52Z | |
date copyright | 2015/11/01 | |
date issued | 2015 | |
identifier issn | 0894-8755 | |
identifier other | ams-80673.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4223591 | |
description abstract | he extent to which an urbanization effect has contributed to climate warming is under debate in China. Some previous studies have shown that the urban heat island (UHI) contribution to national warming was substantial (10%?40%). However, by considering the spatial scale of urbanization effects, this study indicates that the UHI contribution is negligible (less than 1%). Urban areas constitute only 0.7% of the whole of China. According to the proportions of urban and rural areas used in this study, the weighted urban and rural temperature averages reduced the estimated total warming trend and also reduced the estimated urban effects. Conversely, if all stations were arithmetically averaged, that is, without weighting, the total warming trend and urban effects will be overestimated as in previous studies because there are more urban stations than rural stations in China. Moreover, the urban station proportion (68%) is much higher than the urban area proportion (0.7%). | |
publisher | American Meteorological Society | |
title | A New Estimation of Urbanization’s Contribution to the Warming Trend in China | |
type | Journal Paper | |
journal volume | 28 | |
journal issue | 22 | |
journal title | Journal of Climate | |
identifier doi | 10.1175/JCLI-D-14-00427.1 | |
journal fristpage | 8923 | |
journal lastpage | 8938 | |
tree | Journal of Climate:;2015:;volume( 028 ):;issue: 022 | |
contenttype | Fulltext |