Europe has just had its hottest ever March, scientists confirm
The monitor also reported that global temperatures hovered at historic highs in March, prolonging an extraordinary heat streak that has tested scientific expectations.
Scientists say the current period is likely the warmest the Earth has been for the last 125,000 years.
The world saw the second-hottest March in the Copernicus dataset, sustaining a near-unbroken spell of record or near-record-breaking temperatures that has persisted since July 2023.
Since then, virtually every month has been at least 1.5 degrees Celsius (2.7 degrees Fahrenheit) hotter than it was before the industrial revolution when humanity began burning massive amounts of coal, oil and gas.
March was 1.6C (2.9F) above pre-industrial times, prolonging an anomaly so extreme that scientists are still trying to fully explain it.
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"That we're still at 1.6C above preindustrial is indeed remarkable," said Friederike Otto of the Grantham Institute for Climate Change and the Environment at Imperial College London.
"We're very firmly in the grip of human-caused climate change," she told AFP.
Contrasting extremes
Scientists warn that every fraction of a degree of global warming increases the intensity and frequency of extreme weather events such as heatwaves, heavy rainfall and droughts.
Climate change is not just about rising temperatures but the knock-on effect of all that extra heat being trapped in the atmosphere and seas by greenhouse gases like carbon dioxide and methane.
Warmer seas mean higher evaporation and greater moisture in the atmosphere, causing heavier deluges and feeding energy into cyclones, but also affecting global rainfall patterns.
Elsewhere in March, scientists said that climate change intensified an extreme heatwave across Central Asia and fuelled conditions for extreme rainfall which killed 16 people in Argentina.
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Persistent heat
The spectacular surge in global heat pushed 2023 and then 2024 to become the hottest years on record.
Last year was also the first full calendar year to exceed 1.5C: the safer warming limit agreed by most nations under the Paris climate accord.
This represented a temporary, not permanent breach, of this longer-term target, but scientists have warned that the goal of keeping temperatures below that threshold is slipping further out of reach.
Scientists had expected that the extraordinary heat spell would subside after a warming El Nino event peaked in early 2024, and conditions gradually shifted to a cooling La Nina phase.
But global temperatures have remained stubbornly high, sparking debate among scientists about what other factors could be driving warming to the top end of expectations.
The European Union monitor uses billions of measurements from satellites, ships, aircraft and weather stations to aid its climate calculations.
Its records go back to 1940, but other sources of climate data -- such as ice cores, tree rings and coral skeletons -- allow scientists to expand their conclusions using evidence from much further in the past.
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