@article{A._M. H._W._A._2018, title={Seasonal urban heat islands and human comfortability in humid tropical areas}, volume={1}, url={https://ojs.upsi.edu.my/index.php/GEOG/article/view/298}, abstractNote={<p>This paper attempts to relate urban heat island and human comfortability in the Greater Kuala<br>Lumpur/Klang Valley region. Based on TERRA/MODIS data of Klang Valley area for the years<br>2008-2009, supplied by the Institute of Industrial Science, University of Tokyo and MODIS<br>ground receiver of the Asian Institute of Technology, Bangkok, and land surface temperature<br>(LST) was retrieved and mapped from various types of land uses. The spatial extent and the<br>location of Urban Heat Islands (UHIs) were then calculated. The monthly MODIS data were<br>divided into four seasonal periods i.e. Northeast Monsoon (November to March), Southwest<br>Monsoon ((May to September) and two period of intermediate monsoons (April and October,<br>respectively). About 56 locations of known pixels within the area of Klang Valley were<br>selected through systematic sampling to develop GIS contour map using ArcGIS software. The<br>preliminary result showed that the mean highest LST occurred during the Southwest Monsoon<br>period i.e. 309o Kelvin in daytime, while area with high urban imperviousness coverage is the<br>most notable UHI gradient. Surface urban heat islands are typically present during the day and<br>night-time, but tend to be strongest during the day, especially during the Northeast monsoon<br>period. Warm and hot environment due to high temperatures and excessive heat loads will create<br>UHI and thus an uncomfortable environment. The establishment of urban cold island in some<br>seasons can be associated with the occurrences of urban green patches within the metropolitan<br>area. Mitigation must be taken in order to reduce and/or to sustain the establishment of the new<br>UHI centres within and around the study area in future.</p> <p>Makalah ini cuba menghubungkait pulau haba bandar dengan keselesaan manusia di kawasan<br>Wilayah Kuala Lumpur/Lembah Klang. Berdasarkan TERRA/MODIS bagi kawasan Lembah<br>Klang untuk tahun 2008-2009 yang dibekalkan oleh Institut Sains Industri, Universiti Tokyo,<br>MODIS penerima permukaan Institut Teknologi Asia, Bangkok, dan suhu permukaan bumi<br>(LST) data telah diperolehi dan dipetakan bagi pelbagai jenis guna tanah. Kemudiannya dikira</p> <p>keluasan keruangan dan lokasi Pulau Haba Bandar(UHI) bagi kawasan berkaitan. Data MODIS<br>bulanan dibahagikan kepada empat musim iaitu Monsun Timur laut (November ke March),<br>Monsun Barat daya (Mei ke September) dan dua musim antara monsun (masing-masing iaitu<br>April dan Oktober). Kira-kira 56 lokasi yang diketahui pikselnya di sekitar Lembah Klang<br>telah dipilih menerusi persampelan bersistematik bagi membina peta kontur GIS dengan<br>menggunakan perisian ArcGIS. Hasil awalan mendapati min LST tertinggi berlaku semasa<br>musim monsun Barat Daya iaitu 309° Kelvin pada waktu siang, manakala kawasan bandar yang<br>banyak dilitupan dengan kawasan taktelap air menunjukkan kecerunan UHI yang paling nyata.<br>Secara lazimnya, pulau haba bandar permukaan berlaku semasa waktu siang dan waktu malam<br>tetapi cenderung menjadi lebih kuat pada waktu siang, terutamanya semasa musim monsun<br>Timur laut. Persekitaran hangat dan panas yang berpunca daripada suhu yang tinggi dan beban<br>haba yang berlebihan akan menghasilkan UHI dan dengan itu mewujudkan persekitaran yang<br>tidak selesa. Pembentukan pulau sejuk bandar pada beberapa musim boleh dikaitkan dengan<br>kewujudan tompokan kawasan hijau di kawasan metropolitan. Mitigasi perlu dilaksanakan bagi<br>mengurangkan dan/atau menghalang daripada pembentukan pusat UHI yang baru di sekitar dan<br>di sekeliling kawasan kajian pada masa hadapan.</p>}, number={1}, journal={GEOGRAFI}, author={A., Shaharuddin and M. H., Noorazuan and W., Takeuchi and A., Noraziah}, year={2018}, month={Dec.}, pages={132–145} }