New Today 24h

The situation of climate change in the world and the problems

Climate is the state of the atmosphere at a certain place, which is characterized by the average number of years worth of temperature, humidity, rainfall, evaporation, clouds, wind ... Thus, climate reflect average values for years of weather and it usually stable nature, little changed.

In the geological history of our earth, climate change has happened many times with hot and cold periods lasting thousands of years that we call ice ages or interglacial period. Last glacial period happened 10,000 years ago and is now warming period interglacial period. In terms of causes of climate change, we can see that due to the precession and changes in Earth's rotation axis tilt, shift the Earth's orbit around the sun, the position of continents and oceans, and especially the changes in atmospheric composition.

While the first cause is the cause of the planet, it eventually causes the huge impact of man we call it heats the atmosphere or the effects kinh.Co understand profile is: the average temperature of the earth's surface is determined by the balance between the absorbed solar heat and return to the universe. When more heat trapped in the atmosphere, the earth's temperature will rise. Main contains much CO2 in the atmosphere will act as a layer of glass to keep the heat radiates back into space by the Earth. Along with CO2 gas, there are some that are also referred to as greenhouse gases such as NOx, CH4, CFC. With the strong growth of industrial production and the use of fossil fuels (oil, coal ..), research scientists showed that global temperatures will increase from 1, 4 ° C to 5,8oC from 1990 to 2100 and so would entail the risk of deepening the quality of human life.

The Climate Change (CC) is happening globally increasingly serious. The best example is the warming of the earth, melting ice, rising sea levels; is the unusual weather, storms, floods, tsunamis, earthquakes, droughts and frosts lasted ... leading to food shortages, food and mass epidemics occur in humans, livestock, poultry ...

Can see the harm in the direction of global warming presented in the following 10 things worse: rising sea levels, ice retreated to the poles, heat waves, storms and floods, drought, disaster, economic downturn, conflict and war, the loss of biodiversity and ecosystem destruction. The proof for this problem is indicated by a series of impacts of climate extremes in recent times as there were about 250 million people affected by floods in South Asia, Africa and Mexico. Southern European countries are facing the risk of a serious drought prone to wildfires, desertification, while Western Europe is under threat occurs large floods, sea level rise as well as sending a fierce winter frost. The great storm had happened in the US, China, Japan, India ... phenomenon caused by global warming in decades. The data obtained by satellite each year shows that the number of hurricanes has not changed, but the hurricane, cyclone intensity, devastating has increased, especially in North America, Southwest Pacific , Indian Ocean, north Atlantic Ocean. A study of the probability of up to 90% .So shows will be at least 3 billion people fall into food shortages in 2100, due to warming of the Earth.

Topology Nông up the Left Đất, Bang tan the guide to 'Mực nuoc level Đặng Cao. If time interval 1962 - 2003, quality nuoc level average Toàn Cầu augmented 1,8mm / sáu, Thị Tú 1993-2003 level augmented be 3,1mm / năm. Tổng Công, in 100 Last year, Mục nuoc level the ascending 0,31m. Theo observation word protection tinh, identifier tích all layers tape out Bắc Cúc, Nam Cúc, tape out Greenland so some Núi tape out Trung Quốc being Dan Bi thu hep. Chính the tan Cháy of the layers tape along with the Nông up of the instruments hậu Đại dương Toàn Cầu (forward depth 3.000m) have GOP Phan Lâm cho Mực nuoc level Đặng Cao. Dự messages until the end of the Thế Kỷ XXI, Nhiệt degrees average would grow up between words 2,0 - 4,5oC and Mực nuoc level Toàn Cầu would increase the word 0,18m - 0,59m. Việt Nam is 1 in 4 nuoc chiu affect fatal nề first of the BĐKH and Đặng Cao of foreign level.

Theo statistics, numbers conficts can instruments Lãnh affects Việt Nam shrink known ret the past 2 hex line discipline qua. Word 29 conficts every year (from 1971-1980) Xương, but 15-16 conficts every Nam Từ năm 1994 - 2007. Số con Bão above level Đông affects nuoc ta that day as few go but backwards zero Côn Bão powerful may length manual Tang up, Mùa Bão ended muon, mutual Đạo of Bão return be aromatic common and number Côn Bão affects Khu Vực Nam Trung offset, Nam collection day as augmented. Party Cảnh that, many days Mua Phun out domains Bắc shrink a half (from 30 days / year in hex line discipline 1961-1970 from still 15 days / year in hex line discipline 1991-2000). Lượng Mua variable is not least Quán between regions, Han Han be xu manual expanded, specially be out Khu Vực Nam Trung offset (in That Khánh Hòa), Dân đen gia increase the current objects hoang mạc ciphertext.

El Nino and La Nina influence to our country in recent decades, causing more heat waves, prolonged cold spell has caused record count. Predicting the end of the twenty-first century, the average temperature increase of about 30C and our country will increase the number of waves and some hot days in the year; sea level will rise to 1m. This leads to many unusual phenomena of weather. Especially the situation of flood and drought. Sea level rise leading to the intrusion of salt water into inland, directly impacted the groundwater resource, water as well as water and agricultural land - industrial. If sea level rise of 1m would lose 12.2% of the land is home to 23% of the population (17 million people) in our country. In particular, the central coastal region will be heavily influenced by the phenomenon of climate change and sea level rise. Private Mekong Delta, forecast in 2030, about 45% of the area of this region would be Department of salinity and cause serious crop damage due to floods and waterlogging. If no response plan, most of the area of the Mekong Delta will be inundated much of the year, and the damage is estimated to be $ 17 billion.

Climate change also leads to the change of weather, direct impact on crops, agriculture, forestry, industry and farming, fishing - seafood. Especially the occurrence of disease and scarcity of food, fresh water. Forecast, there will be 1.8 billion people worldwide will be difficult to clean water and 600 million people are malnourished because of lack of food due to the influence of global climate change in coming years