essay 代写:雾霾严重和密集的因素

essay 代写:雾霾严重和密集的因素

因此,主要的空气污染物包括含悬浮颗粒的煤烟和二氧化硫(SO2)。一项研究强调,在大多数情况下,北京的污染会变得更糟,它会损害适当的能见度,能见度会低到50英尺(15米)甚至更低。在大多数情况下,空气质量比世卫组织(世界卫生组织)规定的可接受质量高40倍。在2010年,一项由中国政府提出,120万人过早死亡是由于空气污染造成的,有机会在中国生活超过5亿中国将减少约5年,因为空气污染在中国以惊人的速度增加。人们也注意到气象学是造成雾霾严重和密集的另一个因素。

essay 代写:雾霾严重和密集的因素
研究指出,北京空气中的颗粒物会周期性增加,主要是由风向的变化引起的。据观察,当风从南方吹来的时候,这个城市就开始面临麻烦。城市周围的工厂大多位于南部地区。在反应迟缓的条件下,城市交通和工业排放的气态污染物与空气发生反应,在地方一级产生大量PM。据观察,秋季、春季和冬季的雾霾和污染问题更为严重,因为夏季会有大雨,雨水会冲刷掉空气中的颗粒物,从而帮助清洁空气。

essay 代写:雾霾严重和密集的因素

Therefore, the major air pollutants include coal smoke with suspended coal particles, and sulphur dioxide (SO2). A study highlighted that in majority of the cases, the pollution of Beijing becomes worse that it impairs proper visibility which becomes as low as 50 feet (15 meters) and even lower. In majority of the cases quality of the air is 40 times elevated than the acceptable quality set by WHO (World health Organization). In the year 2010, a study conducted by the Chinese Government presented that 1.2 million premature deaths are caused due to air pollution in China and there is a chance that lives of more than 500 million Chinese will be reduced by approximately 5 years because of air pollution that is increasing at an alarming rate in China. It has also been noticed that meteorology is another factor that makes the haze severe and dense.

essay 代写:雾霾严重和密集的因素
Studies have pointed out that the PM in the air increases periodically in Beijing and is mostly driven by the variations flow of wind from one direction to the other. It has been observed that when the wind begins blowing from south, the city starts facing trouble. The factories around the city are located mostly in the southern region. During reactively sluggish conditions, the pollutants in the gaseous state released from city traffic and coming from the industries react with the air and produce a large quantity of PM at a local level. It has been observed that the issue of haze and pollution is more intense during the fall, spring and winter seasons because heavy rain occurs during summer and it helps to clean the air by washing away the particles.