Abnormal global climate change has caused frequent natural disasters, and it is crucial to master self-rescue methods.
2020 is an uneven year. The new crown virus spreads globally and affects the lives of people all over the world. The plans of international students have also been disrupted by the epidemic. The exams that have been hard to prepare have been postponed or cancelled due to the epidemic, and the return ticket is one ticket. Difficult to find, international students are facing tremendous psychological pressure.
In addition to the epidemic, various sudden natural disasters have also laid potential safety hazards for studying abroad. In the autumn of 2019, Australia was hit by a forest fire, which lasted only a few months after burning. The states entered a state of emergency. The capital Canberra was enveloped in dense smoke, and the sky was red, as if entering a movie-like end of the world. In February 2020, Australia was hit by heavy rains and floods occurred in many places, causing many overseas students who were planning to apply for Australia to apply to other countries. Natural disasters such as the 2021 Alaska Peninsula earthquake, Japanese mudslides, California forest fires, high temperatures in the United States, and floods in many European countries, coupled with the continuous spread of epidemics, have made the safety of studying abroad a focus of attention.
Many countries the world in 2021 by natural disasters intrusion
natural disasters refers to human survival harm or damage to natural phenomena of human living environment, including drought, heat, cold, cold, floods, flash floods, typhoons, tornadoes, fire tornadoes, hail, wind Hail, frost, heavy rain, blizzard, freezing rain, heavy fog, strong wind, icing, haze, haze, earthquake, tsunami, landslide, mudslide, floating dust, blowing sand, sandstorm, thunder and lightning, thunderstorm, spherical lightning, volcanic eruption, etc.
Its formation must meet two conditions: one must have natural change as an inducement, and the other must have damaged people, property, and resources as the object to withstand the disaster. There are two main reasons for disasters: one is natural variation, and the other is man-made influence. Therefore, disasters with natural mutation as the main cause are usually called natural disasters, such as earthquakes, storms, and tsunamis; disasters with man-made effects as the main cause are called man-made disasters, such as man-made fires, traffic accidents, and acid rain.
The abnormally high temperature in the United States in 2021 is a meteorological disaster among natural disasters. In July, 30 states in the United States broke the highest temperature record at the same time, and the temperature in some cities even reached 50°C. This phenomenon is called blocking the hot high air pressure. This high air pressure is like putting a lid on a pressure cooker in the United States. It will exhaust the surrounding cold air. When the internal hot air rises to a certain height, it will be affected by the lid. Block, the internal pressure will increase, and the gas temperature will become higher.
Not only the United States, but Canada is also plagued by high temperatures, with temperatures approaching 50°C. The high temperatures have also caused wildfires to spread. In British Columbia alone, 450 fires have occurred in 2021. Due to the high latitude of Canada, summer is usually very cool. Many Canadians have a weak sense of avoiding heat. The sudden high temperature caused many people to suffer from heat stroke and even cause casualties.
Countries in western Europe suffered heavy rains in July. London, UK, was hit by heavy rains. There was severe water accumulation in many urban areas, many subway stations were flooded, many roads were closed due to flooding, and some main traffic roads were interrupted. Many places in Belgium also encountered rare rains, causing severe floods, flooding the streets and washing away cars. There was also a severe flood in Germany due to heavy rains. Houses were washed away. The flood also caused the water level to rise, local telephone and Internet lines were interrupted, and people disappeared and died.
The reason for the heavy rain in Europe is that a powerful low vortex is entrenched in Europe, and a large amount of water vapor travels north from the North Atlantic and the Mediterranean, inputting energy to this entrenched low vortex, resulting in large-scale rainfall in France, Germany, Belgium, the Netherlands, Luxembourg and other places. Under the influence of rainfall, many rivers such as the Rhine in Europe flooded, and countries such as Germany, Belgium, and Luxembourg were severely affected.
Warning nature of
natural disasters occurring not all accidental, concentrated heavy rain, high temperature, extreme weather disasters are related to all mankind, damage to the environment, excessive felling of trees, destruction of forested wetlands, food waste and other acts that have made The global greenhouse effect has become more serious, leading to melting of glaciers and rising sea levels, causing more ecological problems.
With frequent occurrences of abnormal weather, none of us can predict what the environment will become and what natural disasters will emerge in the future. The British scholar Stephen Hawking said before that if the process of global warming continues, then the living conditions on the earth will become unbearable. The theoretical physicist believes that if greenhouse gas emissions are not reduced, the earth will repeat the fate of another planet in the solar system-Venus, and the temperature will reach 460°C. Global control of the greenhouse effect is imminent.
The “China Blue Book of Climate Change (2021)” issued by the China Meteorological Administration on August 4 pointed out that comprehensive observations of the climate system and a number of key indicators indicate that the warming of the climate system is still continuing, and the risk of extreme weather and climate events has further increased. On August 9th, the United Nations Intergovernmental Panel on Climate Change (IPCC) released “Climate Change 2021: Natural Science Basis” also mentioned that modern society’s continued dependence on fossil fuels produces greenhouse gases at an unprecedented rate in the past 2000 years. The effects of global warming are already obvious: record-breaking droughts, wildfires and floods have destroyed all parts of the world. If greenhouse gas emissions continue, the situation may get worse.
According to the “Paris Agreement”, the international community agreed to limit the global temperature rise this century to less than 2.0°C higher than the pre-industrial level, and strive to limit the temperature rise to less than 1.5°C. From the average level of the next 20 years, scientists predict that by the mid-2030s, the temperature rise will reach or exceed 1.5°C. For cities, certain aspects of climate change may be amplified, including high temperatures, floods caused by heavy precipitation events, and sea level rise in coastal cities.
According to a report issued by the United Nations, the current concentration of carbon dioxide in the atmosphere is at the highest point in at least 2 million years; the area of Arctic sea ice is the lowest value in at least the past 1,000 years; the rate of global warming is the fastest since at least the past 2,000 years; sea level rise The magnitude is unprecedented in at least the past 3000 years. In this regard, NRDC President Mitch Bernard said that the response to climate change requires all mobilization, “Governments must take rapid and decisive measures to respond to global climate change, reduce harmful pollution, and accelerate the transition to clean and safe energy.”
Countries around the world work together to tackle the global climate. Variety
The destruction of natural ecology leads to the deterioration of the environment and various abnormalities in the climate. This problem is irreversible in a short period of time. The biggest uncertainty in all climate change predictions is how humans will act. If the world takes positive action now, many of the most terrifying effects of climate change can still be avoided. (The issue of climate change discussed by the international community mainly refers to the issue of climate warming caused by the increase in greenhouse gases.)
In this regard, countries all over the world are adopting different policies to deal with global climate change: In 2008, the United Nations Environment Program officially launched the “Global Green The “A Global Green New Deal” aims to promote the development of a green economy, and at the same time to achieve economic recovery, solve the dependence on high carbon emissions, increase the development of renewable energy, and reduce the dependence on fossil energy. In 2020, the European Union announced a new industrial policy that will reduce carbon emissions by 60% in 2030 compared to 1990, and will focus on strengthening the modernization and upgrading of energy-intensive industries in steel and cement, and at the same time adopt sustainable product policies. , To improve the recycling rate and reuse rate of textiles, plastics, electronic products and other fields. The European Union also announced a building renovation plan aimed at improving the energy efficiency of existing buildings, and plans to carry out energy-saving renovations to 35 million buildings in the next 10 years. Protecting the ecological environment and water resources, reducing human poverty, and under the concept of sustainability, the development of a green economy is considered the only path to global economic recovery.
In order to reduce the impact of global warming on the Alps, the European Union and eight countries (Austria, Germany, France, Italy, Liechtenstein, Monaco, Slovenia, and Switzerland) have signed the Alpine Convention. Sweden puts forward the goal of 2030 that the transportation industry will no longer use fossil fuels. By 2045, Sweden’s net greenhouse gas emissions will be zero, and negative emissions will be achieved thereafter.
As a leader in the global carbon market and even in the field of climate change, California has formulated plans for carbon emissions and extended its total control and trading plan to 2030. Residents can continue to save electricity bills through California’s solar energy program, replace old vehicles with zero-emission vehicles, and move to houses near transportation hubs. Companies in the fields of water, energy and fuel efficiency will continue to expand and create jobs. The local transportation department will further expand services and launch new trains and electric buses.
my country actively joins the global team to curb greenhouse gas emissions. In 2007, the State Council issued the “China’s National Climate Change Plan” to implement policies and measures to control greenhouse gas emissions, and vigorously develop hydropower, wind power, solar energy, geothermal energy, tidal energy and biomass. Energy and other renewable energy, actively promote the construction of nuclear power, and make new contributions to improving the global climate. In 2016, my country joined the “Paris Agreement” signed by 178 contracting parties around the world to jointly tackle global climate change and enhance the capacity of developing countries to deal with climate change.
Science prevention of natural disasters
safety of overseas students all the time affects the motherland loved ones heart. Protecting your personal safety is a prerequisite for successfully completing your studies. Therefore, international students should pay special attention to the prevention methods of different kinds of natural disasters.
Typhoon: Coastal areas should always pay attention to the weather forecast in summer and autumn. If there is a typhoon warning message, try not to go out. Close doors and windows. Reinforce structures that are easily blown by strong winds. Do not stay in dangerous houses. Do not stay in tall buildings or advertisements. Stay under the sign and be careful of falling objects. When parking, stay away from buildings, trees, billboards, etc., and evacuate in time if you are in low-lying areas. Hold the steering wheel to avoid crosswinds when passing bridges and other special terrains when driving.
Thunderstorms: In case of thunderstorms, unplug household appliances as much as possible indoors and avoid making calls to mobile phones or wired telephones, and avoid small buildings without lightning protection facilities or staying near garages, carports, or iron fences. Hazardous objects such as isolated tall buildings, telephone poles, big trees, and billboards should be taken to safe places such as buildings equipped with lightning rods as soon as possible.
Flood: If you are hit by a flood, you must move to a high place. If you are surrounded by a flood, you can use planks, boats, etc. Washed away by the flood. When there is stagnant water in the city, do not walk on roads with stagnant water, try to stay close to buildings, and never close to places with vortexes to prevent accidentally falling into dangerous areas such as wells and pits. Residents living in low-lying areas Items such as sandbags, water baffles, and small pumps should be prepared in advance.
Debris flow: Avoid going to mountainous areas where there are frequent mudslides. If you hear the thunderous roar from a distant valley, or see the water in the valleys and streams stop or suddenly rise, it is likely to be a sign of the mudslides, and immediately move towards the mudslides in a vertical direction. Evacuate the slopes on both sides and do not follow the downstream direction of the mud-rock flow valley.
Sandstorm: Close doors and windows in time, seal them with adhesive tape if necessary, try to avoid outdoor activities, if you must outdoor activities, first pay attention to health protection, wear a mask when going out, and cover your head with a gauze to avoid sand and dust Damage to the eyes and respiratory tract is caused. Secondly, as sand and dust weather is often accompanied by windy weather, it is necessary to pay attention to some impacts of high-altitude falling objects that may be brought by windy weather; also pay attention to the adverse effects of low visibility weather on traffic travel. Properly place outdoor objects that are easily damaged by sandstorms. After traveling in sandy weather, wash your face, hands and sterilize in time, and wash clothes with sand and dust. The dust in the room should also be wiped clean in time to avoid entering the respiratory tract and causing diseases.
Earthquake: Don’t panic when an earthquake occurs. First, find a place with a low center of gravity and a solid place. Use cushions and other things to cover your head, turn off the gas in your home, and don’t run out in a panic. This will easily break the glass. , Bricks, billboards and other things are injured. Reinforced concrete structures will cause misalignment of doors and windows due to the shaking of the earthquake. The door cannot be opened. Please open the door to ensure that there is an escape exit. If you must protect your head outdoors, it is safer to find buildings to avoid. After the earthquake warning is issued, prepare emergency supplies such as water, food, flashlights, towels, etc. in time, and follow the government’s instructions to designated locations to avoid danger. If you are buried in a building during an earthquake, you should have the confidence to be rescued as long as you are conscious and have no major trauma, actively implement self-rescue, cover your mouth and nose with a wet towel to prevent dust from choking your respiratory tract, and support with moving objects around Avoid further collapse of the heavy objects above the body, expand the activity space to ensure enough air, save your physical strength, and do not blindly call for help. When you hear someone moving, tap to send a message to the outside world for help.
High temperature: pay attention to the weather forecast at any time, prepare for heatstroke prevention and cooling in summer, try to avoid outdoor activities in the afternoon, and avoid burning eyes and skin due to strong light. Maintain adequate sleep and a light diet, drink plenty of warm water, mung bean soup, and eat more fresh fruits and melons. In case of heatstroke, it is necessary to quickly reduce the core body temperature, and strive to reduce the core temperature to below 39℃ within half an hour, and quickly get out of the high temperature and sun environment. Physical cooling measures should be taken to reduce the temperature. It is not recommended to use the commonly used solution for “fever” Hot medicine, severe cases should go to the hospital immediately.