《Haze Weather.docx》由会员分享，可在线阅读，更多相关《Haze Weather.docx（10页珍藏版）》请在三一办公上搜索。
1、Haze WeatherHaze Weather Haze Weather Good afternoon, teacher. My topic of my Composition is haze weather. Generally speaking, I divide it into 7 parts, they are: The definition of a haze weather, the different between fog and haze, the cause of the haze, The harm of the haze, How to prevent the haz
2、e weather, How to protect ourselves in haze weather and The Conclusion. In this paper, I mainly introduces the How to prevent the haze weather and How to protect ourselves in haze weather. In order to write this essay, I mainly through two ways to collect information. First of all, I read a lot of n
3、ews about haze,extract valuable information. Whats more, I read some academic journals on China National Knowledge Infrastructure (CNKI),and translate them into Chinese. Then，coupled with my own idea, this essay becomes what it looks like now. In my opinion，The advantage of my composition lies in ri
4、ch and comprehensive contents which remains the essence of the materials. With the development of economy, rapid expansion of cities and acceleration of urbanization, the pollution of atmospheric aerosol has become increasingly serious, leading to degradation of visibility. Haze weather has become a
5、 common environmental disaster. Its reported that most areas of northern china have been covered by the persistent deep thick fog haze in recent days, for which the national meteorological station issued the highest orange alert, calling people to wear masks to prevent from the air pollution when ou
6、ting. Without the fog, London wouldnt be a beautiful city, said Monet, the famous French painter. However, few Londoners would have agreed with his statement at the time, when the city was choked by the smog of the Industrial Revolution. Crisis behind the beauty can be ignored unconsciously, the for
7、mation and impact of fog are far less attractive than its appearance. The fog haze, which is combined with pollutions and moisture in the air, is one of the chief culprits to the traffic jam and respiratory diseases, damaging the life and health of human beings. 1、The definition of a haze weather Th
8、e haze is a combination of fog and dust, mainly appears in November to the next March, which is not only caused by the temperature inversion, but also the 1 Haze Weather consequences of us human beings actions. In “the ground meteorological observations norms of the China Meteorological Administrati
9、on, the haze weather has its definition: an air generally had muddy phenomenon that the level of visibility is less than 10 km which is caused by a large number of very fine dry dust particles floating in the air and so evenly. ”At this stage, the haze whether is divided into four levels of appellat
10、ion. The visibility is between 510 km belonging to the phenomenon of slight haze;the visibility is between 35 km belonging to the phenomenon of mild haze; The visibility is between 23 km belonging to the phenomenon of severe haze and whats worse, when the visibility is less than 2 km, it belongs to
11、the phenomenon of serious haze. 2、The different between fog and haze Similarities between fog and haze are visibility obstruction. But theres a big difference between the reasons and conditions for the formation of fog and haze. Fog is floating in the air of a large number of small water droplets or
12、 ice crystals, forming conditions requires a higher water vapor saturated. Appeared fog air humidity, air relative humidity is 100%, or closer to 100%, the fog effective horizontal visibility to less than 1 km. When effective 1-10 km horizontal visibility as mist. Fog has with the daily variation of
13、 air humidity and appear sooner or later, the more common or add thick, relatively reduce and disappear phenomenon during the day. A haze occurs when air is relatively dry, air relative humidity under 80% usually. Its formation is due to a large number of tiny particles of dust, smoke, salt crystals
14、 evenly suspended in the air, make effective horizontal visibility to less than 10 km air mixed corrosion phenomenon, symbols for “up. The diurnal variation of the haze is not obvious in general. When air masses without big changes, the air mass is stable, continue to appear for a long time, sometim
15、es sustainable more than 10 days. Because the haze and mist, dust, flying sand, dust, smoke, such as a weather phenomenon, floating in the air for all the large number of very small dust particles and smoke that effective horizontal visibility to less than 10 km. Sometimes makes meteorological profe
16、ssionals are difficult to distinguish. Must be combined with the weather background, air condition, air humidity, color, smell and other factors, such as satellite monitoring to comprehensive analysis and judgment, to correct conclusions, and fog and haze weather phenomenon can transform each other
17、sometimes. 2 Haze Weather 3、The cause of the haze There are many reasons for the formation of haze, among them, As far as Im concerned, there are five cases playing more important roles than others. First of all, the atmospheric air pressure is low and the air doesnt flow, so that the small particle
18、s in the air are all accumulation, then they will be floating in the air. This is the main factor of all. Second, there are a lot of dust on the ground and the air humidity is low, people and traffic flow make the dust stirred up. Third, automobile exhaust is the main pollutant emissions, in recent
19、years the cars in the city are become more and more, automobile exhaust emission is an important factor in the formation of haze. The fourth reason is that factories produce pollution. At last, winter heating 2COemissions and other pollutants. The winter is coming, in most northern cities, the winte
20、r heating is an unavoidable problem for which we are obliged to burn more fuel. As we all know that the energy we used mainly derived from non-renewable resources such as oil, coal and natural gas. Burning coal will lead to air pollution and endanger public health, in some northeastern cities which
21、heated earlier, there have been worsening haze situation. 4、The harm of the haze Generally speaking, I think the haze are mainly doing the harm in four aspects as following: 1）Make bad effects on our health Haze weather is cardiovascular disease patients “health killer, especially for old people wit
22、h respiratory diseases and cardiovascular disease. Said expert points out, the fog is “dangerous in patients with cardiovascular disease, oil-gas because of fog, the lower the oxygen content in air, its easy to feel chest tightness, damp and cold in the morning mist still can cause the cold stimulat
23、ion, it is easy to cause fluctuations in blood pressure, vascular spasm, cardiac load, etc. At the same time, the fog of some pathogens can lead to headaches, or even cause disease such as hypertension, cerebral hemorrhage. 2）Impact the traffic The most significant effect of haze weather on traffic
24、is delaying the travel time. 3 Haze Weather Because the haze reduces our vision, so that our speed has to be lower, the flight delays and the train will be late. Especially in the traffic road, the haze weather may lead to serious traffic congestion because of the decline of traffic ability. Accordi
25、ng to the statistics of The Ministry of Transport, about 10% traffic accidents are directly related to fog、haze and other bad weather. As a result, once the fog and haze appear, the highway will usually be closed. 3）Impact the development of agriculture and livestock The haze weather has a variety o
26、f impacts on Agriculture. Pollution particles suspended in the air, reflects and absorbs sunlight, so that green plants lose necessary light, reduces photosynthesis and the green plants growth will be harmed. Frankly speaking, persistent haze weather are likely to cause a variety of diseases. Due to
27、 the haze weather, the livestock will also be impacted. During haze weather, the cattle may lose its appetite and be suffered by respiratory infection. Because the haze weather does against to the diffusion of gas so that the shed will be polluted. Whats more, bacteria thrives in a moist environment
28、 so that the cattles respiratory can be easily infected. 4）Make temperature volatile Persistent haze weather can result in lack of sunshine, drop the temperature, and delay the rising of temperature in a short time. As a consequence, the weather becomes more volatile. 5、How to prevent the haze weath
29、er Facing the haze weather, we should do something useful to protect our environment. 1）Our government should take some effective measures to accelerate the industrial structure and layout adjustment, promote energy conservation and emissions reduction, construct ecological civilization. Increase th
30、e intensity of pollution treatment, publish the PM2. 5 monitoring information of cities. People not only want to live and work in peace and contentment income, but also want to theblue sky and clean water. As government, it has the responsibility to mobilize various aspects strength, increase the in
31、tensity of pollution treatment, it cannot shirk its primary responsibility in coordinating natural environment with human habitat environment. 2）The public should also take action to reduce the haze, beginning with our neighbor。For example, we should give up driving cars as much as possible when go
32、out. It is said that one important factor that affects urban air quality is automobile exhaust 4 Haze Weather pollution. Experiments show that a car driving at the speed of 20 kilometers per hour discharges twice the total amount of carbon monoxide and hydrocarbons than a car running at 40 kilometer
33、s per hour, with increased fuel consumption, too. We all have to breathe. Air quality is related to everyones quality of life. Every citizen has unshakably responsibility. 3）As college students, To start with, I think that the first priority is our attitude, we can mount campaigns to help the public
34、 set up the view of environmental conscious. Secondly, as we all know, the forest of Japan covers more than half of the country. They usually plant trees on Arbor Day and in Hong Kong many people plant trees when they celebrate their birthday! While for most of us, May 12th exists in name only. I ho
35、pe that we could organize groups to plant trees on this special day. 6、How to protect ourselves in haze weather Haze weather is cardiovascular disease patients “health killer”, we should take some measures to protect ourselves. 1）Go out wearing a mask If go out, you can put on the mask, so that you
36、can effectively prevent dust particles into the body. The best mask is cotton mask, because some people allergic to non-woven fabrics, but the cotton mask, it is generally not allergic, and easy to clean. Go out back, should immediately to clean face and bare skin. 2）Close the window as much as poss
37、ible Many people used to open windows for ventilation but if it was haze all day and did not come loose, it is better to keep the window closed before the sun came out. 3）Keep light diets and drink more water In haze weather, we should choose digestible food rich in vitamins, drink more water, eat f
38、resh vegetables and fruits. In this way, we can not only supplement various vitamins and inorganic salt, but also moisten our lungs. 4）Plant some green plants We can plant some green trees in balcony and terrace. In my experience, evergreen and Money tree are good choices, because of their bigger bl
39、ades, adsorption capacity is relatively strong. 7、Conclusion After 30 years of reform and opening up, historic changes have taken place in the 5 Haze Weather outlook of China and the Chinese people, which surprised all people in the world. We engaged in this kind of development, forgot what we were,
40、 and ignored the world we relied on. However, now the haze weather portends an unimaginative consequence thrusting before us, maybe a disastrous one of our actions. The ecosphere instigates an ecological counterattack while we are still indulged in our rapid process. Its a warning must be paid more
41、attention to. Every coin has its two sides. If we only concentrate on more money, more progress, someday, far away, the ecosphere will be enraged. From my point of view, the ecosphere is the basis of our society, so do things harmful to the environment is hurting humans in the fact. The nature is not the accessory of people. If we still ignore his calling of being respected, we will perpetuate the rut. So its time for awaking. 6
