On Friday, the average global temperature surpassed the two-degree Celsius mark above pre-industrial levels for the first time. According to the European Union’s Copernicus Climate Change Service (C3S), the temperature on Friday was likewise 1.17 degrees above average when compared to a 30-year reference period spanning 1991 to 2020. The temperature had increased to 1.5 degrees Celsius over pre-industrial levels just two months earlier. Experts have warned that we are on course for a three-degree Celsius rise by the end of the century.
World leaders signed the Paris Agreement in 2015, promising to work together to limit global temperatures to 1.5 degrees Celsius
World leaders signed the Paris Agreement in 2015, promising to work together to limit global temperatures to 1.5 degrees Celsius over pre-industrial levels. The temperature increase on Friday called their dedication and efforts into question. Last week, US President Joe Biden and his Chinese counterpart Xi Jinping pledged to step up efforts to cut methane and carbon dioxide emissions. The United Nations Climate Change Conference 2023 is slated to take place on November 30 in Dubai.
2023 is on track to be the warmest year on record
The first-ever two-degree Celsius rise is a striking reminder of the Earth’s constant temperature rise, but it is not cause for despair. Climate scientists from the European Union have warned that 2023 will be the warmest year on record. In July, about half of the United States was under heat advisories. Climate change has also caused forest fires in Australia, Europe, and North America. Climate change is accelerating at the poles, melting ice at an unprecedented rate.
Factors leading to the abrupt increase in global warming
Climate warming, a severe El Nio, and Antarctic sea ice not rebuilding post-winter are all contributing causes to the 2023 temperature increase. Other variables, such as increased solar activity, and lesser factors, such as the aftermath of Tonga’s volcanic eruption, have also exacerbated the situation. Climate change is the primary culprit, with human activities responsible for approximately 1.2 degrees Celsius of warming.
The effects of El Nio on global temperatures
Because the Pacific Ocean spans 30% of the Earth’s area, the El Nio-Southern Oscillation climatic cycle has the greatest natural impact on climate. Sea temperatures near South America rise during an El Nio phase, raising global average temperatures. The current El Nio is expected to peak soon and linger until 2024, potentially raising global temperatures by 0.15°C.
Antarctic sea, solar activity, and other factors contributing to a hotter Earth
The lack of Antarctic sea ice to rebound results in dark ocean waters absorbing rather than reflecting more heat. Increased solar activity adds a modest amount of heat, about 0.05°C. Because of its underwater location, the Tonga volcanic eruption in January 2022 added around 0.035°C over nearly five years, creating water vapor greenhouse gas emissions. Reduced aerosol pollution, such as the 2020 low-sulfur fuel mandate for international shipping, is expected to have contributed 0.05°C of warming by 2050.
