The fact of global climate change
全球气候变暖的事实
The Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) shows that the main cause of global warming is 90% -95% likely to be caused by human emissions of large amounts of greenhouse gases into the atmosphere. For example, large-scale use of fossil fuels and deforestation.
联合国政府间气候变化专门委员会(IPCC)第五次评估报告显示，全球气候变暖的主要原因90%-95%的可能性是人类向大气中排放大量温室气体其他所造成的。如：大规模使用化石燃料和毁林等。
温室气体包括：二氧化碳、甲烷、氧化亚氮、氢氟碳化物、全氟碳化物、六氟化硫等六种气体。温室气体浓度日益升高，使得温室效应不断加剧，导致了全球变暖。
Greenhouse gases include six types of gases: carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride. The increasing concentration of greenhouse gases has exacerbated the greenhouse effect, leading to global warming.
Since the Industrial Revolution in the mid-18th century, the concentration of carbon dioxide in the Earth's atmosphere has risen from 280 ppm (1 ppm is one millionth) at that time to 400 ppm in 2013, an increase of 40% (IPCC). The fifth assessment report shows that the concentration of carbon dioxide will continue to rise.
自十八世纪中叶工业革命以来，地球大气中二氧化碳的浓度已经从当时的280ppm(1ppm为百万分之一)上升到2013年的400ppm，上升了40%(IPCC) 。第五次评估报告显示，二氧化碳浓度还将继续上升。
The American Geophysical Union found through satellite remote sensing research that the strongest Arctic sea ice shrank sharply by 95% from 1984 to 2019. Among them, the Arctic summer glaciers shrank to 4.14 million square kilometers in 2016.
美国地球物理联盟通过卫星遥感研究发现，1984-2019年最坚固的北极海冰急剧萎缩95%。其中，2016年北极夏季冰川萎缩至414万平方公里。
According to the IPCC Fifth Assessment Report, the global average surface temperature increased by approximately 0.85 ℃ from 1880 to 2012, and is expected to rise by 1.1-6.4 ℃ in the next 100 years.
IPCC第五次评估报告中显示：1880年至2012年，全球地表平均气温大约上升了0.85℃,未来100年还将升高1.1-6.4℃。
The warming effect caused by carbon dioxide accounts for 63% of all greenhouse gas warming benefits.The principle of the warming effect of carbon dioxide is that the solar shortwave radiation reaches the surface of the Earth, reacts with various substances on the Earth's surface, and forms surface longwave radiation into the atmosphere. Among them, six gases, mainly carbon dioxide, formed a warming effect.
二氧化碳引起的增温效应，占所有温室气体增温效益的63%。二氧化碳的增温效应原理为：太阳短波辐射到地球表面，与地球表面各种物质反应后，形成地表长波辐射到大气层。其中，以二氧化碳为主的六种气体形成了增温效应。
According to the current development trend, it is expected that global climate change will lead to:
---Plague spreads, permanent glaciers melt, prehistoric viruses ravage.
---Natural disasters are frequent and can cause up to $1 trillion in losses annually.
---A large number of species will disappear, with 15% to 57% of species worldwide going extinct.
按现在的发展趋势，预计到2050年全球气候变暖将导致:
---瘟疫蔓延，永久冰川融化，史前病毒肆虐。
---自然灾害频繁，最高可造成每年1万亿美元的损失。
---大量物种消失，全球15%～57%的物种将灭绝。
---Rising sea levels will submerge over 2000 major cities and 43 island nations.
---Drought and water scarcity, global water crisis, and widespread forest fires.
---海平面上升，2000多个主要城市和43个岛国将被淹没。
---干旱缺水，全球水危机、大范围的森林火灾。
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