The effects of green areas on air surface temperature of the Kuala Lumpur city using WRF-ARW modelling and Remote Sensing technique

3rd International Conference on Research Methodology for Built Environment and Engineering 2017

生态环境科学

Isa, N.A.^1 ; Wan Mohd, W.M.N.^1 ; Salleh, S.A.^1 ; Ooi, M.C.G.^2

Centre of Studies for Surveying Science and Geomatics, Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, Selangor, Shah Alam

40450, Malaysia^1

Division of Environment, Faculty of Engineering, University of Nottingham Malaysia Campus, Semenyih, Selangor

43500, Malaysia^2

关键词: Different distributions;    LANDSAT satellite images;    Linear regression models;    Negative correlation;    Normalized difference vegetation index;    Remote sensing techniques;    Surface temperature distribution;    Weather research and forecasting models;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/117/1/012012/pdf
DOI  :  10.1088/1755-1315/117/1/012012

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Matured trees contain high concentration of chlorophyll that encourages the process of photosynthesis. This process produces oxygen as a by-product and releases it into the atmosphere and helps in lowering the ambient temperature. This study attempts to analyse the effect of green area on air surface temperature of the Kuala Lumpur city. The air surface temperatures of two different dates which are, in March 2006 and March 2016 were simulated using the Weather Research and Forecasting (WRF) model. The green area in the city was extracted using the Normalized Difference Vegetation Index (NDVI) from two Landsat satellite images. The relationship between the air surface temperature and the green area were analysed using linear regression models. From the study, it was found that, the green area was significantly affecting the distribution of air temperature within the city. A strong negative correlation was identified through this study which indicated that higher NDVI values tend to have lower air surface temperature distribution within the focus study area. It was also found that, different urban setting in mixed built-up and vegetated areas resulted in different distributions of air surface temperature. Future studies should focus on analysing the air surface temperature within the area of mixed built-up and vegetated area.