Based on temperature data in Guangdong in the past 50years, statistical methods are used to analyze the characteristics of temperature in spatial and temporal variation. The results show that land surface temperature ...Based on temperature data in Guangdong in the past 50years, statistical methods are used to analyze the characteristics of temperature in spatial and temporal variation. The results show that land surface temperature warms by 0.16℃/1 0a in Guangdong. The range of warming was lower than the average of nationwide and global land surface. Furthermore, the temperature has a larger increase tendency in winter and spring and coastal areas than in summer and autumn and inland areas. Climate zones move towards the north obviously. North tropical zone is expanding, south subtropical zone is reducing and central subtropical zone is relatively stable. Under the global climate warming, characteristics of climate warming in Guangdong were influenced by atmosphere general circulation, sea surface temperature and human activities etc.展开更多
On the basis of the reported air quality index （API） and air pollutant monitoring data provided by the Guangzhou Environment Monitoring Stations over the last twenty-five years, the characteristics of air quality, p...On the basis of the reported air quality index （API） and air pollutant monitoring data provided by the Guangzhou Environment Monitoring Stations over the last twenty-five years, the characteristics of air quality, prominent pollutants, and variation of the average annual concentrations of SOE, NOE, total suspended particulate （TSP）, fine particulates （PM10）, CO and dustfall in Guangzhou City were analyzed. Results showed that TSP was the prominent pollutant in the ambient air environment of Guangzhou City. Of the prominent pollutants, TSP accounted for nearly 62%, SOE 12.3%, and NOx 6.4%, respectively. The average API of Guangzhou over 6 years was higher than that of Beijing, Tianjin, Nanjing, Hangzhou, Suzhou and Shanghai, and lower than that of Shenzhen, Zhuhai and Shantou. Concentrations of air pollutants have shown a downward trend in recent years, but they are generally worse than ambient air quality standards for USA, Hong Kong and EU. SOE and NOx pollution were still serious, impling that waste gas pollution from all kinds of vehicles had become a significant problem for environmental protection in Guangzhou. The possible causes of worsening air quality were also discussed in this paper.展开更多
Based on the 1973 - 2003 temperature data of Guangzhou meteorological station and 1980 - 2000 temperature data of Foshan airport, the variations of urbanization effect on temperature of Pearl River Delta （PRD） and G...Based on the 1973 - 2003 temperature data of Guangzhou meteorological station and 1980 - 2000 temperature data of Foshan airport, the variations of urbanization effect on temperature of Pearl River Delta （PRD） and Guangzhou city were analyzed. It was found that the temperature has increased significantly due to the PRD＇s urbanization. During the last 20 years, Foshan airport＇s temperature has increased by 0.7℃, and the Guangzhou city＇s temperature increased by about 1.℃ during last 30 years. The heat island of Guangzhou city is obvious but has some differences from other big Chinese cities.展开更多
基金Key project from Natural Science Foundation of China (40231009)
文摘Based on temperature data in Guangdong in the past 50years, statistical methods are used to analyze the characteristics of temperature in spatial and temporal variation. The results show that land surface temperature warms by 0.16℃/1 0a in Guangdong. The range of warming was lower than the average of nationwide and global land surface. Furthermore, the temperature has a larger increase tendency in winter and spring and coastal areas than in summer and autumn and inland areas. Climate zones move towards the north obviously. North tropical zone is expanding, south subtropical zone is reducing and central subtropical zone is relatively stable. Under the global climate warming, characteristics of climate warming in Guangdong were influenced by atmosphere general circulation, sea surface temperature and human activities etc.
基金Project supported by the National Natural Science Foundation of China (No. 30270282)the Key Project of Chinese Education Ministry (No. 704037)the Special Invited Professor Foundation of Guangdong Province.
文摘On the basis of the reported air quality index （API） and air pollutant monitoring data provided by the Guangzhou Environment Monitoring Stations over the last twenty-five years, the characteristics of air quality, prominent pollutants, and variation of the average annual concentrations of SOE, NOE, total suspended particulate （TSP）, fine particulates （PM10）, CO and dustfall in Guangzhou City were analyzed. Results showed that TSP was the prominent pollutant in the ambient air environment of Guangzhou City. Of the prominent pollutants, TSP accounted for nearly 62%, SOE 12.3%, and NOx 6.4%, respectively. The average API of Guangzhou over 6 years was higher than that of Beijing, Tianjin, Nanjing, Hangzhou, Suzhou and Shanghai, and lower than that of Shenzhen, Zhuhai and Shantou. Concentrations of air pollutants have shown a downward trend in recent years, but they are generally worse than ambient air quality standards for USA, Hong Kong and EU. SOE and NOx pollution were still serious, impling that waste gas pollution from all kinds of vehicles had become a significant problem for environmental protection in Guangzhou. The possible causes of worsening air quality were also discussed in this paper.
基金Project 973 - a Development Plan for Key National Foundation Research (2002CB410801)a project from the Natural Science Foundation of China (40375002)
文摘Based on the 1973 - 2003 temperature data of Guangzhou meteorological station and 1980 - 2000 temperature data of Foshan airport, the variations of urbanization effect on temperature of Pearl River Delta （PRD） and Guangzhou city were analyzed. It was found that the temperature has increased significantly due to the PRD＇s urbanization. During the last 20 years, Foshan airport＇s temperature has increased by 0.7℃, and the Guangzhou city＇s temperature increased by about 1.℃ during last 30 years. The heat island of Guangzhou city is obvious but has some differences from other big Chinese cities.
