From June 2023 until June 2024, air and ocean surface water temperatures averaged a quarter of a degree celsius higher than records set only a few years previously. Air temperatures in July 2024 were slightly cooler than the previous July (0.04°C, the narrowest of margins) according to the the European Union's (EU) Copernicus Climate Change Service.
July 2023 was in turn 0.28°C warmer than the previous record-hot July in 2019, so the remarkable jump in temperature during the past year has yet to ease off completely. The warmest global air temperature recorded was in December 2023, at 1.78°C above the temperatures? Several factors came together, but the biggest and most important is climate change, largely caused by burning fossil fuels.
What caused the heat streak
Temperatures typical of Earth 150 years ago are used for comparison to measure modern global warming. The reference period, 1850-1900, was before most greenhouse gases associated with global industrialisation-which increase the heat present in Earth's ocean and atmosphere had been emitted.
July 2024 was 1.48°C warmer than a typical pre-industrial July, of which about 1.3°C is attributable to the general trend of global warming over the intervening decades. This trend will continue to raise temperatures until THE CONVERSATION humanity stabilises pre-industrial average temperature for December-and 0.31°C warmer than the previous record.
Global warming has consistently toppled records for warm global average temperatures in recent decades, but breaking them by as much as a quarter of a degree for several months is not common.
This story is from the August 19, 2024 edition of Business Standard.
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This story is from the August 19, 2024 edition of Business Standard.
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