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Assessment of temperature extremes and climate change impacts in Singapore, 1982–2018
Singapore Journal of Tropical Geography ( IF 2.000 ) Pub Date : 2021-08-26 , DOI: 10.1111/sjtg.12384
Rengui Jiang 1, 2, 3 , Wen Li 1 , Xi Xi Lu 2 , Jiancang Xie 1 , Yong Zhao 3 , Fawen Li 4
Affiliation  

Understanding extreme temperature variations is important for countries to manage risks associated with climate change. Yet, the characteristics of temperature extremes and possible climate change impacts have not been adequately investigated in Singapore. In this study, we attempted to do so by defining 14 extreme temperature indices (ETIs) for the period of 1982–2018 in Singapore, and investigating the trends of those ETIs using a pre-whitening Man-Kendall test coupled with the Sen's slope estimator method. The linear and nonlinear relationships between ETIs and El Niño Southern Oscillation (ENSO) were also examined using correlation, composite and wavelet analysis. Our results indicate that trends of temperature extremes varied according to station locations, ETIs and time scales. In all stations, ETIs such as the monthly mean value of the diurnal range between maximum and minimum temperatures (DTR), cool nights (TN10p) and cool days (TX10p) presented decreasing trends, while the rest of them exhibited increasing trends. The composite values varied for different ETIs—meaning that while eight no-threshold ETIs reflected smaller values, other ETIs reflected relatively larger composite values, indicating that ENSO may have affected those ETIs more. The ETIs were mainly statistically and significantly coherent with ENSO at a 2–8 year cycle. We hope that our findings would be beneficial for climate action planning and temperature-related disaster prevention in Singapore.

中文翻译:

1982-2018 年新加坡极端温度和气候变化影响评估

了解极端温度变化对于各国管理与气候变化相关的风险非常重要。然而,新加坡尚未对极端温度的特征和可能的气候变化影响进行充分调查。在本研究中,我们尝试通过定义 1982 年至 2018 年期间新加坡的 14 个极端温度指数 (ETI),并使用预白化 Man-Kendall 检验结合 Sen 斜率估计器来调查这些 ETI 的趋势方法。ETI 与厄尔尼诺南方涛动 (ENSO) 之间的线性和非线性关系也使用相关性、复合和小波分析进行了检查。我们的结果表明,极端温度的趋势因站点位置、ETI 和时间尺度而异。在所有车站,ETIs,如最高和最低气温(DTR)、凉爽的夜晚(TN10p)和凉爽的日子(TX10p)之间的昼夜平均值的月平均值呈下降趋势,而其余的则呈上升趋势。不同 ETI 的综合值有所不同——这意味着虽然 8 个无阈值 ETI 反映了较小的值,但其他 ETI 反映了相对较大的综合值,表明 ENSO 可能对这些 ETI 的影响更大。ETI 主要在 2-8 年周期内与 ENSO 在统计上和显着一致。我们希望我们的研究结果有助于新加坡的气候行动规划和与温度相关的灾害预防。而其余的则呈现出增加的趋势。不同 ETI 的综合值有所不同——这意味着虽然 8 个无阈值 ETI 反映了较小的值,但其他 ETI 反映了相对较大的综合值,表明 ENSO 可能对这些 ETI 的影响更大。ETI 主要在 2-8 年周期内与 ENSO 在统计上和显着一致。我们希望我们的研究结果有助于新加坡的气候行动规划和与温度相关的灾害预防。而其余的则呈现出增加的趋势。不同 ETI 的综合值有所不同——这意味着虽然 8 个无阈值 ETI 反映了较小的值,但其他 ETI 反映了相对较大的综合值,表明 ENSO 可能对这些 ETI 的影响更大。ETI 主要在 2-8 年周期内与 ENSO 在统计上和显着一致。我们希望我们的研究结果有助于新加坡的气候行动规划和与温度相关的灾害预防。
更新日期:2021-09-24
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