Urbanization-induced changes in extreme climate indices in Thailand during 1970–2019
Pimonsree S.; Limsakul A.; Kammuang A.; Kachenchart B.; Kamlangkla C.
Date Issued2022
Other AbstractApplying the homogenized daily data during 1970–2019, this study examined the urbanization effects on changes in a set of extreme climate indices for large cities across Thailand, where has undergone rapid urbanization in recent decades. Analysis revealed positive urbanization effects on a number of the indices related to hot extremes, providing a consistent picture with the previous studies. Larger and more significant urbanization effects were evident for minimum temperature-related extreme indices, probably resulting from stronger nighttime enhancement of the urban heat island (UHI) intensity. From a sub-regional perspective, the urbanization effects for four clusters contributed, on an average, to half of the total trends of temperature extremes. Another noteworthy finding was marked by significant urbanization-induced increases in the amount, frequency, intensity, and magnitude of rainfall extremes at the urban stations in the Bangkok metropolis and the central part of the country. Analysis showed that most of the rainfall indices in this region exhibited a 100% urbanization contribution. These results highlighted that the Bangkok metropolis and its adjacent urban areas experienced substantial increases in climate extremes, resulting in greater risks from their associated disasters. The mechanisms how urbanization has induced changes in climate extremes in Thailand seem to be complex, depending on many factors including increases in UHI intensity, heat absorption in urban boundary layer, urban-rural roughness, anthropogenic aerosol, and pollutant emissions. However, to better understand their underlying physical processes and mechanisms, climate model-based dynamical experiments and additional analysis of high-resolution satellite data are further needed. © 2021 Elsevier B.V.
enkeywordsExtreme climate indices; Temperature and rainfall extremes; Thailand; Urban heat island; Urbanization
journalAtmospheric Research
Document Type期刊论文
AffiliationAtmospheric Pollution and Climate Change Research Unit, School of Energy and Environment, University of Phayao, Phayao, 56000, Thailand; Environmental Research and Training Center, Technopolis, Klong 5, Klong LuangPathumthani 12120, Thailand; Faculty of Environment and Resource Studies, Mahidol University, 999 Phutthamonthon 4 Road, Salaya, Phutthamonthon, Nakhon Pathom, 73170, Thailand; Mae Hong Son Provincial Administrative Organization, Khunlumprapas Road, Chong Kham, Mueang Mae Hong Son, Mae Hong Son, 58000, Thailand
Recommended Citation
GB/T 7714
Pimonsree S.,Limsakul A.,Kammuang A.,等. Urbanization-induced changes in extreme climate indices in Thailand during 1970–2019[J],2022,265.
APA Pimonsree S.,Limsakul A.,Kammuang A.,Kachenchart B.,&Kamlangkla C..(2022).Urbanization-induced changes in extreme climate indices in Thailand during 1970–2019.Atmospheric Research,265.
MLA Pimonsree S.,et al."Urbanization-induced changes in extreme climate indices in Thailand during 1970–2019".Atmospheric Research 265(2022).
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