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Tags Current Affairs

Humans pollute more than volcanoes

Date: 02 October 2019 Tags: Climate Change

Issue

Human activity gives out up to 100 times more planet-warming carbon each year as all the volcanoes on Earth, a study has found out.

 

Background

The Deep Carbon Observatory (DCO), an international team of scientists, released a series of papers outlining how carbon is stored, emitted and reabsorbed by natural and manmade processes.

 

Details

  • It was found that manmade carbon dioxide emissions exceed the contribution of volcanoes, which gives out gas and are often considered as a major climate change contributor to current warming rates.

  • It was also observed that modern manmade emissions were the “same magnitude” as past carbon shocks that precipitated mass extinction.

    • Manmade emissions in 2018 alone topped 37 gigatonnes, whereas the CO2 released annually by volcanoes hovers around 0.3 and 0.4 gigatonnes which his roughly 100 times less than manmade emissions.

 

Sources of greenhouse gases

  • Transportation: The transportation sector generates the largest share of greenhouse gas emissions.

  • Electricity production : Electricity production generates the second largest share of greenhouse gas emissions.

  • Industry : Greenhouse gas emissions from industry primarily come from burning fossil fuels for energy, as well as greenhouse gas emissions from certain chemical reactions.

  • Agriculture:  Greenhouse gas emissions from agriculture come from livestock such as cows, agricultural soils, and rice production.

  • Commercial and Residential: Greenhouse gas emissions from businesses and homes arise primarily from fossil fuels.

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