Consequences of an increase of 1.5 and 2ºC in global temperature

Global temperature is increasing mainly due to human activities that release greenhouse gases into the atmosphere. These gases trap heat from the sun, causing the planet to warm.

The main causes of the increase in global temperature are:

  • Burning fossil fuels: Burning coal, oil, and natural gas releases carbon dioxide into the atmosphere. Carbon dioxide is a greenhouse gas that traps heat from the sun.
  • Deforestation: Cutting down trees releases carbon dioxide into the atmosphere and reduces the amount of carbon dioxide that trees absorb.
  • The Agriculture: Agriculture releases methane and nitrous oxide into the atmosphere. These greenhouse gases are even more powerful than carbon dioxide.
  • Industrial processes: Some industrial processes release greenhouse gases into the atmosphere, such as perfluorocarbon (PFC) and sulfur hexafluoride (SF6).

Importantly, these are just some of the consequences of the 1.5 degree Celsius increase in global temperature. Climate change is a complex problem and its impacts will be felt around the world.

Urgent action is needed to reduce greenhouse gas emissions and mitigate the effects of climate change.

These are some of the consequences of the 1.5º C increase in global temperature

More intense and frequent heat waves: They wait heat waves more extreme events around the world, which will affect human health, agriculture and ecosystems.

Increase in the frequency and intensity of extreme weather events: More droughts, floods, storms and other extreme weather events are expected.

Accelerated melting of glaciers and ice sheets: Rising global temperatures will cause accelerated melting of glaciers and ice sheets, contributing to sea level rise.

Sea level rise: Sea level rise of between 0,26 and 0,77 meters is expected by the end of the century, affecting coastal areas and low-lying islands.

Ocean Acidification: The absorption of CO2 by the ocean increases its acidity, making it difficult for some marine organisms to survive.

Biodiversity loss: Many species of plants and animals are expected to become extinct due to climate change.

Impacts on food security: Rising global temperatures will affect agriculture and food production, potentially increasing food insecurity.

Population displacements: Millions of people are expected to be displaced by climate change, especially in coastal areas and in developing countries.

Conflicts and violence: Climate change could increase competition for natural resources, which could lead to conflict and violence.

Economic impacts: Climate change will have a significant impact on the global economy, with costs estimated in trillions of dollars.

Consequences of a 2ºC increase in global temperature:

The consequences of a 2 degree Celsius rise in global temperature are even more serious than those of 1.5 degrees. Some of the additional consequences include:

  • Extreme heat waves: Heat waves so intense that they could make some parts of the world uninhabitable are expected.
  • Widespread droughts and floods: More frequent and intense droughts and floods are expected around the world, affecting agriculture, food security and access to drinking water.
  • Accelerated melting of glaciers and ice sheets: The accelerated melting of glaciers and ice sheets will contribute to a rise in sea level of up to 1 meter by the end of the century, affecting coastal areas and low-lying islands.
  • Massive biodiversity loss: Due to the increase in the consequences of an increase of 1.5 and 2ºC in global temperature, the extinction of up to 30% of plant and animal species is expected due to climate change.
  • Large-scale population displacements: Millions of people are expected to be displaced by climate change, which could lead to humanitarian crises.
  • Increase in the frequency and intensity of extreme weather events: More hurricanes, typhoons, storms and other extreme weather events are expected.
  • Ocean Acidification: The absorption of CO2 by the ocean increases its acidity, making it difficult for many marine organisms to survive.
  • Impacts on human health: Climate change will increase the incidence of heat-related illnesses, malnutrition, respiratory illnesses and other illnesses.
  • Damage to infrastructure: Climate change will damage infrastructure such as roads, bridges, buildings and power grids.
  • Conflicts and violence: Climate change could increase competition for natural resources, which could lead to conflict and violence.

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