Discussion that 'reports on climate change announced by UN agencies are too optimistic'

By Tabitha Kaylee Hawk

Although there are various opinions on the cause and future influence, it is a strict fact that the climate greatly fluctuates on the global scale and the average temperature rises. Various measures have been devised to mitigate the deterioration of the environment caused by climate change, but the report that the United Nations' Intergovernmental Panel on Climate Change (IPCC) concerning the related institutional climate change is too optimistic is shown to be optimistic.

The UN's Devastating Climate Change Report Was Too Optimistic - Motherboard
https://motherboard.vice.com/en_us/article/43e8yp/the-uns-devastating-climate-change-report-was-too-optimistic

James Hansen, the top of NASA Goddard Space Research Institute and 7 meteorologists in the report published in 2008, reported that atmospheric carbon dioxide concentration rose to 450 ppm and the average global temperature was 1 It has revealed the mechanism by which it rise, causing the "substantially irreversible ice sheet and species loss". Scientists in this report indicate that "This planet is already in danger area".

The important point here is that "the increase in greenhouse gas is caused by self-reinforced positive feedback". In order to keep the global climate in a safe area, it is estimated that the concentration of carbon dioxide in the atmosphere needs to stay at 350 ppm, but as of the year 2008 when the report was announced, It already showed 385 ppm. Furthermore, in May 2018 the value has increased to 410 ppm, and this value is said to be the highest figure in past 800,000 years. It means that the concentration of carbon dioxide in the atmosphere has risen in the past 10 years to a value far exceeding the "dangerous area" that the report showed.

According to the UN's new climate report announced ten years after the "warning" by Mr. Hansen et al., If the climate change continues as it is, the average global temperature will increase by 1.5 degrees in 12 years and the occurrence of droughts, floods, ultra large typhoon It is predicted that catastrophic disasters such as human beings have never experienced before will be brought about. Furthermore, the IPCC says "This is just a beginning", and it is said that the average temperature of the earth rises by 3 to 4 degrees by the end of the 21st century, and the creatures on Earth including human beings are alive It also shows the possibility of encountering a crisis.

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However, even the contents of this IPCC report are said to be "optimistic" too. A scientist who saw the report says that criticism has been raised saying, "We do not correctly understand the effect of positive feedback."

"Mr. Mario Molina , Professor of MIT, who won the Nobel Prize in Chemistry in 1995, said," Although the IPCC has a description of the increasing impact in the future, it is lowering the major risks, the type of feedback loop, and there is a possibility that plunged the global climate system of the chaos before to solve mankind is to improve the energy system environmental pollution problem, " he says .

Furthermore, the problem of IPCC's report is that there are points that " geo-engineering technology to remove carbon dioxide from the atmosphere is made too high". One of the technologies that is attracting attention is the technology called BECCS (Bio-Energy with Carbon Capture and Storage) that combines biofuel and CO2 capture and storage. This is to burn cultivated crops and trees at the power plant to make electricity and collect and store the discharged CO2, but its effectiveness is also casting doubts on the effectiveness.

The trump card for countermeasures against global warming is counterproductive for the earth? | National Geographic Japanese version site
https://natgeo.nikkeibp.co.jp/atcl/news/16/021700056/

For example, there is a technology called BECCS that combines biofuel and CO 2 capture and storage. It burns cultivated crops and trees at the power plant to make electricity and collects and stores the discharged CO 2. Williamson showed strict figures on its potential risk, although it is a technology that attracts attention. To achieve the reduction targets of the Paris Agreement at BECCS, it is necessary to cultivate crops and trees at 430 million to 580 million hectares of land. It is about one-third of the earth's cultivated land or half of the US land.

In the future, the population continues to increase on the earth, and it is also seen to reach 10 billion people in 2055. As the population increases, the amount of human activity increases, and it is unavoidable that more energy is required accordingly. And to create that energy 2018 as of the present Earth, many carbon dioxide is emitted.

In addition to a way to reduce the amount of carbon dioxide which can be regarded as a byproduct of the energy production of the earth by developing and disseminating reusable energy such as solar power generation and wind power generation so as not to discharge carbon dioxide itself There is even a thing that limits human economic activity as an extreme way of species. Especially, the fossil fuel consumed in the armaments of each country is huge, and the US military, the world's largest army, is the world's largest carbon dioxide emitter.

Nonetheless, it is not realistic to immediately put down hold on arms reduction and human economic activity. On the other hand, however, it is not good to continue the activity as it is, so before human beings fall into the "destructive environment that has never experienced before" the plan is "to take measures that have never been experienced It may be necessary to take ".

By Marcela