Nobuhiko Endo1, Jun Matsumoto2, 1 and Tun Lwin3
1Research Institute for Global Change, JAMSTEC, Yokosuka, Japan
2Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Hachioji, Japan
3Department of Meteorology and Hydrology, Naypyitaw, Myanmar
Abstract
The authors investigate trends in precipitation extremes using daily precipitation data from Southeast Asian countries during 1950s to 2000s. Number of wet days, defined by a day with at least 1 mm of precipitation, tends to decrease over these countries, while average precipitation intensity of wet days shows an increasing trend. Heavy precipitation indices, which are defined by precipitation amount and percentile, demonstrate that the number of stations with significant upward trend is larger than that with significant downward trend. Heavy precipitation increases in southern Vietnam, northern part of Myanmar, and the Visayas and Luzon Islands in the Philippines, while
heavy precipitation decreases in northern Vietnam. Annual maximum number of consecutive dry days decreases in the region where winter monsoon precipitation dominates. Decrease of precipitation event in the dry season is suggested in Myanmar.
งานวิจัยชิ้นนี้ ผู้วิจัยได้ทำการศึกษาข้อมูลปริมาณน้ำฝนย้อนหลังในกลุ่มประเทศภูมิภาคเอเชียตะวันออกเฉียงใต้ตั้งแต่ช่วงปี ค.ศ. 1950 ถึง ปี ค.ศ. 2000 พบว่าในแต่ละประเทศมีแนวโน้มของปริมาณฝนรายปีที่แตกต่างกันไปในแต่ละพื้นที่ของภูมิภาคนี้
สอบถามข้อมูลเพิ่มเติม
Corresponding author: Nobuhiko Endo, Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. . ©2009, the Meteorological Society of Japan.
