【摘 要】
：
This paper analyses air quality, change trend, main pollutants, the number of pollution days etc.in Beijing, shanghai and Guangzhou during 2001-2012, accord
【机 构】
：
Key Laboratory of Meteorological Disaster of Ministry of Education,Nanjing University of Information
【出 处】
：
Sixth China-Korea-Japan Joint Conference on Meteorology(第六届中
论文部分内容阅读
This paper analyses air quality, change trend, main pollutants, the number of pollution days etc.in Beijing, shanghai and Guangzhou during 2001-2012, according to the air quality daily data in urban released by Ministry of Environmental Protection of the Peoples Republic of China.It shows that, the annual average of API during 2001-2012 in Beijing , Shanghai , Guangzhou is on the decline as the whole,Beijing is the most obvious decline among them, and all decreased slowly after 2008,the air quality is improved in total; the annual and seasonal average is decreased gradually from north to south ;API in cities which near the sea is lower ;API in three cities is higher in winter and spring, lower in summer; the number of days which achieved pollution level is a downward trend, Beijing is the largest, the air quality is:Guangzhou>Shanghai> Beijing.
其他文献
High accuracy and compatible measurement was extended to obtain atmospheric CO2 mole fractions at ten typical sites over China.Observational data from 2009
Based on the differential optical absorption spectroscopy(DOAS) system in Nanjing University of Information Science and Technology, O3, NO2 and SO2 of the n
Atmospheric aerosols play an important role in radiation balance and climate changes.Aerosol optical properties in small counties near Mega-cities have caus
To study the chemical compositions of atmospheric precipitation and the potential sources at a high-altitude site in east China, samples of rainwater were c
《烟火漫卷》是迟子建继《群山之巅》后又一力作.形色各异之人,被搁置于自然与现代、东方与西方交融的都市哈尔滨,于命运罗网的沉浮中挣扎,以人性之温情,于“烟火漫卷”处迸
Cloud condensation nuclei(CCN) have an important role in the water cycle and climate change.CCN can participate the cloud microphysical processes and determ
The atmospheric aerosols play an important role in air quality deterioration and climate change.The particle size, size distribution, concentration and chem
作为世界历史文化举足轻重的组成部分,尤其在近现代给世界以及中国带来过巨大影响的国家,俄罗斯是每一个历史或文学的爱好者、学习者与研究者不得不去了解的国度.诚然,当下国
The Spectral Radiation Transport Model for Aerosol Species (SPRINTARS) has been implemented into the Non-hydrostatic Icosahedral Atmospheric Model (NICAM) r
In this study, we indicated calculation of river discharge by using a regional climate model output as input data to a hydrological model to find an approac