Evaluation of surface heat fluxes in Chiayi plain of Taiwan by remotely sensed data

NCU Institutional Repository > 地球科學學院 > 大氣物理研究所 > 期刊論文 > Item 987654321/50323

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50323

题名:	Evaluation of surface heat fluxes in Chiayi plain of Taiwan by remotely sensed data
作者:	Chang,TY;Liou,YA;Lin,CY;Liu,SC;Wang,YC
贡献者:	大氣物理研究所
日期:	2010
上传时间:	2012-03-27 17:29:17 (UTC+8)
出版者:	國立中央大學
摘要:	Surface energy processes have an essential role in regional weather, climate and hydrosphere cycles, as well in regulating urban heat redistribution. The Chiayi urban area of Taiwan and its surrounding agricultural plains are an appropriate complex for studying land surface parameters and energy fluxes of different land cover/land use types in an urban heat island. In this study, three micro-meteorological stations were established over Chiayi Plain to collect in situ reference observations from 2006. In order to properly characterize the surface heat fluxes over a regional scale by point measurement, Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images and images acquired by a high resolution airborne campaign in conjunction with meteorological data were used to estimate the surface heat fluxes over a large area. The analytical results indicated that surface heat fluxes determined from both airborne and satellite images were feasible for estimating surface heat flux. The correlation coefficient of surface heat fluxes with in situ corresponding observations exceeded 0.80. On the other hand, satellite-observed surface skin temperature and land surface energy fluxes were the core factors analysed in different land cover types. The urban surface was rather dry as half of net radiation is converted to sensible heat flux for heating the surface, whereas over 90% net radiation is converted to latent heat flux at wet surfaces such as evergreen broadleaf or water. Surface heat flux was also proven to be an indicator of the magnitude of urban heat island effect and the findings of this study encouraged further use of remotely sensed imagery for assessing the urban heat island effect.
關聯:	INTERNATIONAL JOURNAL OF REMOTE SENSING
显示于类别:	[大氣物理研究所 ] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	494	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....