2020 暑期研習計畫成果

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期刊
2020.08.24
Evaluating ExtremePrecipitation Changeduring the Mei-yu season from CMIP6 Future Projections
趙品諭(國立中央大學大氣科學系), 陳昭安, 許晃雄
參與「跨領域主題研究計畫-氣候與劇烈天氣的超高解析度模擬」研習計畫

報告摘要

We evaluated the changes in extreme precipitation indices during the Mei-yu season in the western North Pacific based on the CMIP6 multi-model datasets. Five indices (RX1day, RX5day, SDII, R99p, and CDD) are analyzed. 10 CMIP6 models with 4 SSP scenarios are considered in this study. The indices associated with extreme rainfall intensity (RX1day, RX5day, SDII, R99p) are generally enhanced. The enhancements are statistically significant over southern China, central China, Taiwan, the Korean Peninsula, and southern Japan. On the other hand, the duration of CDD is slightly prolonged.The changes in the 4 rainfall intensity indices are more consistent between 10 models, but those of CDD are relatively inconsistent. As the SSP level raises, the enhanced extreme rainfall intensity becomes more identifiable and statistically significant.In addition, enhanced rainfall intensity and prolonged CDD are found in the eastern Bay of Bengal.

關鍵字

CMIP6, Extreme Precipitation, 梅雨

相關連結

2020.08.24
The role of urbanization on the temperature, RH and wind in Taiwan in July
楊天瑞(國立台灣師範大學地球科學系), 王懌琪, 李昱祺
參與「從數據分析了解氣候變遷下的降雨變化」研習計畫

報告摘要

This work investigates the impacts of land cover changes on the changes of surface environments in Taiwan in July. By using high-resolution regional WRF model experiments, we compare the changes of monthly mean of temperature (T), relative humidity (RH), and winds due to land cover changes between 1980 and 2016 in Taiwan (Chen et al., 2019). Changes of diurnal changes of T, RH, and land sea breeze are also investigated with the CWB station data of Taipei, Taichung, and Taitung. While model simulations have biases over the northern Taiwan, they seems to capture the patterns of temperature changes over the western Taiwan. It is found that, the temperature increase due to built-up land can be up to 2 degree over the urban area, which covers the cooling effects due to large-scale atmospheric changes.
Keyword : WRF model, Urbanization, Global Warming

關鍵字

Urbanization, Land cover use change, climate change, land-sea breeze

相關連結

2020.08.24
Analysis of Outdoor Wet -bulb Globe Temperature in Taiwan
梁嫚芳(國立台灣大學公共衛生學系), 王懌琪, 李昱祺
參與「從數據分析了解氣候變遷下的降雨變化」研習計畫

報告摘要

Wet-bulb globe temperature (WBGT) is the most widely used index of heat stress nowadays, used to estimate the effect of temperature, humidity, wind speed (wind chill), and solar radiation on humans. To begin with, this study estimates WBGT with four parameters mentioned above, based on the hourly historical data of Taiwan weather stations from the Central Weather Bureau (CWB). Then, the study attempts to visualize the change of WBGT in Taiwan among years, months, and hours. Finally, the study applies the calculated WBGT to two regulations, including Heat Flag Conditions use by the U.S. military and Work-rest Standards during High-temperature operation used by Taiwan government, to see the change of flag conditions and rest time per hour regulated in Taiwan.

關鍵字

Wet-bulb Globe Temperature (WBGT), Work-rest standards, Global Warming

相關連結

2020.08.24
The effect of iron availability on coral bleaching at 30°C : preliminary test
吳玥慶(國立嘉義大學水生生物科學系),郭竹珈, 何東垣
參與「珊瑚共生藻的金屬需求與海水溫度的互動」研習計畫

報告摘要

The warming of ocean surface water has caused severe bleaching of global coral reefs. The mutualism between coral and its symbionts is disrupted due to the temperature rise. The latest research in our laboratory found that under coral bleaching threshold (CBT, 30°C), increased Fe availability enhances the growth of Symbiodinium. Here, we designed a novel experiment to test whether increased Fe availability affects the extent of bleaching at CBT, 30°C.

關鍵字

Coral bleaching, Symbiodinium, CBT, Trace metal

相關連結

2020.08.24
The Effect of Fe concentrations on a Coral Symbiont at 30°C
郭竹珈(國立國立中央大學大氣科學系),吳玥慶 ,何東垣
參與「珊瑚共生藻的金屬需求與海水溫度的互動」

報告摘要

Symbiodinium, a symbiotic microalgae resides in corals, provides its hosts energy to survive through photosynthesis. Rising sea surface temperature has caused serious coral bleaching and death recently. This study is to carried out experiments to validate our laboratory’s latest research, which is about the effect of Fe availability (Fe') on the growth rate of Brevolium minutum at high seawater temperature (30°C).

關鍵字

Symbiodinium, high sea water temperature, coral, trace metal

相關連結

2020.08.24
Influence of UV-B on the photoreduction of Fe(III) to Fe(II)
孔為鳴(國立成功大學環境工程學系),何東垣
參與「氣膠PM2.5重金屬在海水中的元素及同位素特徵及其轉換過程」研習計畫

報告摘要

Iron is a limiting factor for phytoplankton growth in the ocean. Studies show that the transformation between Fe(III) & Fe(II) would affect Fe bioavailability . And UV-B is an important factor to affect that. Ferrozine (FZ) is used to chelate Fe(II) reduced from Fe(III) in the experiments. The results show that UV-B would crucially promote the reduction and that FZ can chelate Fe(II) reduced from Fe(III). Finally, I draw a conclusion that I validate significant Fe photoreduction by UV-B.

關鍵字

Photo reduction of iron, UV-B, ferrozine

相關連結

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