Daily climate data at 110 stations during 1961-2010 were selected to examine the changing characteristics of climate factors and extreme climate events in South China. The annual mean surface air temperature has incre...Daily climate data at 110 stations during 1961-2010 were selected to examine the changing characteristics of climate factors and extreme climate events in South China. The annual mean surface air temperature has increased significantly by 0.16℃ per decade, most notably in the Pearl River Delta and in winter. The increase rate of the annual extreme minimum temperature (0.48℃ per decade) is over twice that of the annual extreme maximum temperature (0.20℃ per decade), and the increase of the mean temperature is mainly the result of the increase of the extreme minimum temperature. The increase rate of high-temperature days (1.1 d per decade) is close to the decrease rate of low-temperature days (-1.3 d per decade). The rainfall has not shown any significant trend, but the number of rainy days has decreased and the rain intensity has increased. The regional mean sunshine duration has a significant decreasing trend of -40.9 h per decade, and the number of hazy days has a significant increasing trend of 6.3 d per decade. The decrease of sunshine duration is mainly caused by the increase of total cloud, not by the increase of hazy days in South China. Both the regional mean pan evaporation and mean wind speed have significant decreasing trends of -65.9 mm per decade and -0.11 m s-1 per decade, respectively. The decrease of both sunshine duration and mean wind speed plays an important role in the decrease of pan evaporation. The number of landing tropical cyclones has an insignificant decreasing trend of -0.6 per decade, but their intensities show a weak increasing trend. The formation location of tropical cyclones landing in South China has converged towards 10-19°N, and the landing position has shown a northward trend. The date of the first landfall tropical cyclone postpones 1.8 d per decade, and the date of the last landfall advances 3.6 d per decade, resulting in reduction of the typhoon season by 5.4 d per decade.展开更多
This paper reviews assessment of climate change impacts on economy,society and ecological environment in the coastal areas of South China based on published literatures;it also proposes suitable adaptation strategies ...This paper reviews assessment of climate change impacts on economy,society and ecological environment in the coastal areas of South China based on published literatures;it also proposes suitable adaptation strategies and countermeasures.Review shows that climate change has resulted in sea level rise in the coastal areas of South China,increasing the occurrence and intensity of storm surges,aggravating the influence of saltwater intrusion,coastal erosion,urban drainage and flood control,threatening the coastal facility and infrastructures,inundating lowland areas,ofsetting mudflat silting,and degrading mangroves and coral reef ecosystem.Therefore,in order to reduce the adverse efects of climate change and to support the sustainable development in the coastal areas of South China,it is critical to improve the monitoring and early warning system,enhance prevention criteria,fortify coastal protection engineering,strengthen salt tide prevention,and reinforce the ecological restoration and protection.展开更多
This study reviews the impacts of climate change on human health and presents corresponding adaptation strategies in South China.The daily mean surface air temperatures above or below 26.4 C increase the death risk fo...This study reviews the impacts of climate change on human health and presents corresponding adaptation strategies in South China.The daily mean surface air temperatures above or below 26.4 C increase the death risk for the people in Guangzhou,especially the elderly are vulnerable to variations in temperature.Heat waves can cause insomnia,fatigue,clinical exacerbation,or death from heatstroke etc.,while cold spells show increases in patients with fractures.During a cold spell period,the rates of both on-site emergency rescues and non-implementable rescues increase,and the risk of non-accidental deaths and respiratory disease deaths significantly rise as well.Both time series of hazy days and ozone concentrations have significant positive correlations with the number of patients with cardiovascular diseases.Both malaria and dengue fever reach higher altitudes and mountainous areas due to climate warming.Climate change is likely to bring stronger heat waves in the future,thereby increasing heat wave-related illnesses and deaths,particularly in the metropolitan areas of the Pearl River Delta.The projected increase of continuous cold days in Guangdong province and parts of northern Guangxi province will afect residents’health in the future.The rising temperature exaggerates ozone pollution,but it is not clear whether climate change is aggravating or mitigating haze pollution.The transmission potential of malaria in South China will increase by 39%–140%and the transmission season will extend by 1–2 months with an air temperature increase of 1–2 C.By 2050,most areas in Hainan province are projected to convert from non-endemic dengue into endemic dengue areas.The aging population will cause more vulnerable people.To mitigate the adverse impacts of climate change on human health,sound and scientific adaptation strategies must be adopted in advance,such as strengthening the surveillance of epidemic diseases in potential transmission areas,conducting timely weather forecasting for human health,evaluating health vulnerability to climate change,improving environmental and health education,and strengthening hazard management and the cooperation between meteorological and health departments.展开更多
基金supported by the Special Climate Change Research Program of China Meteorological Administration (No. CCSF-09-11, CCSF-09-03, CCSF2011-25, and CCSF201211)the Science and Technology Planning Project of Guangdong province (No.2011A030200021)
文摘Daily climate data at 110 stations during 1961-2010 were selected to examine the changing characteristics of climate factors and extreme climate events in South China. The annual mean surface air temperature has increased significantly by 0.16℃ per decade, most notably in the Pearl River Delta and in winter. The increase rate of the annual extreme minimum temperature (0.48℃ per decade) is over twice that of the annual extreme maximum temperature (0.20℃ per decade), and the increase of the mean temperature is mainly the result of the increase of the extreme minimum temperature. The increase rate of high-temperature days (1.1 d per decade) is close to the decrease rate of low-temperature days (-1.3 d per decade). The rainfall has not shown any significant trend, but the number of rainy days has decreased and the rain intensity has increased. The regional mean sunshine duration has a significant decreasing trend of -40.9 h per decade, and the number of hazy days has a significant increasing trend of 6.3 d per decade. The decrease of sunshine duration is mainly caused by the increase of total cloud, not by the increase of hazy days in South China. Both the regional mean pan evaporation and mean wind speed have significant decreasing trends of -65.9 mm per decade and -0.11 m s-1 per decade, respectively. The decrease of both sunshine duration and mean wind speed plays an important role in the decrease of pan evaporation. The number of landing tropical cyclones has an insignificant decreasing trend of -0.6 per decade, but their intensities show a weak increasing trend. The formation location of tropical cyclones landing in South China has converged towards 10-19°N, and the landing position has shown a northward trend. The date of the first landfall tropical cyclone postpones 1.8 d per decade, and the date of the last landfall advances 3.6 d per decade, resulting in reduction of the typhoon season by 5.4 d per decade.
基金supported by the Special Climate Change Research Program of China Meteorological Administration(No.CCSF-09-11,CCSF2011-25,and CCSF201307)the Science and Technology Planning Project of Guangdong Province(No.2011A030200021)
文摘This paper reviews assessment of climate change impacts on economy,society and ecological environment in the coastal areas of South China based on published literatures;it also proposes suitable adaptation strategies and countermeasures.Review shows that climate change has resulted in sea level rise in the coastal areas of South China,increasing the occurrence and intensity of storm surges,aggravating the influence of saltwater intrusion,coastal erosion,urban drainage and flood control,threatening the coastal facility and infrastructures,inundating lowland areas,ofsetting mudflat silting,and degrading mangroves and coral reef ecosystem.Therefore,in order to reduce the adverse efects of climate change and to support the sustainable development in the coastal areas of South China,it is critical to improve the monitoring and early warning system,enhance prevention criteria,fortify coastal protection engineering,strengthen salt tide prevention,and reinforce the ecological restoration and protection.
基金supported by the Special Climate Change Research Program of China Meteorological Ad-ministration(No.CCSF-09-11 and CCSF201307)by the Science and Technology Planning Project of Guang-dong province(No.2011A030200021)
文摘This study reviews the impacts of climate change on human health and presents corresponding adaptation strategies in South China.The daily mean surface air temperatures above or below 26.4 C increase the death risk for the people in Guangzhou,especially the elderly are vulnerable to variations in temperature.Heat waves can cause insomnia,fatigue,clinical exacerbation,or death from heatstroke etc.,while cold spells show increases in patients with fractures.During a cold spell period,the rates of both on-site emergency rescues and non-implementable rescues increase,and the risk of non-accidental deaths and respiratory disease deaths significantly rise as well.Both time series of hazy days and ozone concentrations have significant positive correlations with the number of patients with cardiovascular diseases.Both malaria and dengue fever reach higher altitudes and mountainous areas due to climate warming.Climate change is likely to bring stronger heat waves in the future,thereby increasing heat wave-related illnesses and deaths,particularly in the metropolitan areas of the Pearl River Delta.The projected increase of continuous cold days in Guangdong province and parts of northern Guangxi province will afect residents’health in the future.The rising temperature exaggerates ozone pollution,but it is not clear whether climate change is aggravating or mitigating haze pollution.The transmission potential of malaria in South China will increase by 39%–140%and the transmission season will extend by 1–2 months with an air temperature increase of 1–2 C.By 2050,most areas in Hainan province are projected to convert from non-endemic dengue into endemic dengue areas.The aging population will cause more vulnerable people.To mitigate the adverse impacts of climate change on human health,sound and scientific adaptation strategies must be adopted in advance,such as strengthening the surveillance of epidemic diseases in potential transmission areas,conducting timely weather forecasting for human health,evaluating health vulnerability to climate change,improving environmental and health education,and strengthening hazard management and the cooperation between meteorological and health departments.
