What is climate change in the world?

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 What is climate change in the world?





Climate change refers to long-term changes in temperature and weather patterns. These changes may be natural, for example through changes in the solar cycle. However, since the 19th century, human activity has become the main cause of climate change, mainly due to the burning of fossil fuels such as coal and oil. and gas.


Burning fossil fuels produces greenhouse gas emissions that act as a global blanket, absorbing the sun's heat and raising temperatures.


Examples of greenhouse gas emissions that contribute to climate change include carbon dioxide and methane. For example, these gases come from using gasoline to drive cars or using coal to heat buildings. Removal of weeds and shrubs and deforestation also release carbon dioxide. The landfill is the main source of methane emissions. The production and consumption of energy, industry, transportation, construction, agriculture, and land use are major sources of emissions.

 





  • Greenhouse gas concentrations reach their highest level in two million years
  • Emissions continue to rise. As a result, the Earth is now 1.1°C warmer than it was in the late 19th century. The last decade (2011-2020) was the warmest on record.
  • Many people think that climate change basically means higher temperatures, but rising temperatures are just the beginning of the story, and because the Earth is a system and everything is connected, changes in one region can lead to changes in all other regions.
  • The consequences of climate change include severe droughts, water scarcity, wildfires, sea-level rise, floods, melting polar ice, catastrophic storms, and biodiversity degradation.


People are experiencing climate change in many ways


Climate change affects our health and our ability to grow food, shelter, safety, and work. Some of us are more vulnerable to the effects of climate, such as those who live in small island states and other developing countries. Conditions such as the sea-level rise and saltwater intrusion have worsened to the point where entire communities have been forced by prolonged, protracted droughts that put people at risk of starvation. The number of refugees is expected to increase in the future due to the climate.


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Every increase in global warming matters


Limiting global temperature rise to no more than 1.5 degrees Celsius will help us avoid the worst climate impacts and maintain a livable climate, as thousands of scientists and government reviewers have acknowledged in a series of United Nations reports. In addition, under the current national climate plan, projected to reach by the end of the century, global warming has approached 3.2 degrees Celsius.


The emissions that cause climate change come from every region of the world and affect everyone, but some countries emit much more than others, with the 100 lowest emitting countries producing only 3% of total emissions, and the lowest emitting countries being the 10 countries that generate the majority of emissions 68 percent of emissions. Everyone must act on climate, but the countries and peoples that cause the most problems have a greater responsibility to take action on climate change.


 


We have huge challenges, but we have many solutions


Many solutions to climate change can provide economic benefits while improving our livelihoods and protecting the environment. In addition, global frameworks and agreements have been concluded to guide progress, such as the Sustainable Development Goals, the United Nations Framework Convention on Climate Change, and the Paris Agreement. Generally divided into three categories of actions required, namely: reducing emissions, adapting to climate impacts, and financing the necessary retrofitting.


Converting the energy system from fossil fuels to renewable energy sources, such as solar or wind energy, will reduce emissions that contribute to climate change. But we must start now. A growing coalition of nations is committing to zero emissions by 2050, but emissions must be cut by nearly half to keep warming below 1.5°C by 2030, and fossil fuel production must decline by about 6% per year during the 2020-2030 decade.


 



On the other hand, adaptation to the consequences of climate can protect people, families, businesses, livelihoods, infrastructure, and natural ecosystems, including current and potential future impacts. Adaptation must take place everywhere, and priority must now be given to the most vulnerable with the least resources to address climate risks, where returns can be high. For example, disaster warning systems can save lives and property and can deliver benefits up to 10 times the initial cost.


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We can pay the bill now.. or pay dearly in the future


Climate action requires significant financial investment from governments and companies, but inaction on climate action comes at a heavy price. A key step for industrialized nations is to meet their $100 billion annual commitment to developing nations so they can adapt and move toward a greener economy.