การศึกษาฝุ่นละอองขนาดเล็กไม่เกิน 2.5 ไมครอน ในประเทศไทย : การกระจายตัวเชิงพื้นที่

• Main Author: กรชนก ยิ้มละมัย
• Other Authors: สันติ ภัยหลบลี้
• Format: Senior Project
• Language: Thai
• Published: จุฬาลงกรณ์มหาวิทยาลัย 2019
• Subjects: ฝุ่น > ไทย; Dust > Thailand
• Online Access: https://digiverse.chula.ac.th/Info/item/dc:10602
• Institution: Chulalongkorn University

The objective of this project is to study the spatial distribution of particulate matter 2.5 (PM 2.5) in Thailand. By creating a relationship between time and PM 2.5 concentration and applying Frequency – Magnitude Distribution (FMD) to create frequency – PM 2.5 concentration distribution. The data can be separated into 2 groups based on time and PM 2.5 concentration relationship which are high concentration of PM 2.5 occur during December – February at Central and East of Thailand because of (1) Cross-boundary haze from Cambodia and (2) Atmospheric factor and high concentration of PM 2.5 occur during February – April at North of Thailand because of burning activities at this area and cross-boundary haze from Myanmar and Laos. The result of frequency – PM 2.5 concentration distribution is used to create a value and b value map, Possible Maximum Concentration of PM 2.5 map, Return Period of PM 2.5, and Probability of Occurrence of PM 2.5 map. The whole data is consistent. The low b value area can be preliminary indicated that there is a high chance of occurring a high concentration of PM 2.5. The area where the low b value is the high rate of occurring maximum concentration, have a short return period and have a high probability of occurrence of high PM 2.5 concentration. The low b value area is in the North region, West region, Central region, some parts of the Northeast region, and some parts of the East region. The North has the highest chance of occurring a high concentration of PM 2.5 because of (1) Burning activity and (2) Intermontane basin.