Flux continu

Tipping elements within the Earth system are increasingly well understood. Scientists have identified more than 25 parts of the Earth’s climate system that are likely to have “tipping points” – thresholds where a small additional change in global warming will cause them to irreversibly shift into a new state. The “tipping” of these systems – which include the Atlantic Meridional Overturning Circulation (AMOC), the Amazon rainforest and the Greenland ice sheet – would have profound consequences for both the biosphere and people. More recent research suggests that triggering one tipping element could cause subsequent changes in other tipping elements, potentially leading to a “tipping cascade”. For example, a collapsed AMOC could lead to dieback of the Amazon rainforest and hasten the melt of the Greenland ice sheet.

De economische impact van de opwarming van de aarde kan veel erger uitdraaien dan eerder werd gedacht. Volgens Australische onderzoekers is een welvaartsvermindering van 40% niet ondenkbaar.

Vorig jaar steeg de gemiddelde temperatuur voor het eerst boven 1,5 graad Celsius vergeleken met het pre-industriële niveau. Wat betekent dat wereldwijd voor de landbouw en voor ons voedsel?

Gifstoffen uit schimmels op voedingsproducten als granen, maïs of rijst dreigen een groter gezondheidsprobleem te worden in Europa. Naarmate het continent opwarmt en vochtiger wordt door de klimaatverandering, zullen die zich beter kunnen verspreiden. We houden daar beter nu al rekening mee, waarschuwt het Europees Milieuagentschap.

A new study released on Monday showed that 2019 was yet another year of record-setting ocean warming, with water temperatures reaching the highest temperature ever recorded. . An international team of 14 scientists examined data going back to the 1950s, looking at temperatures from the ocean surface to 2,000 meters deep. The study, which was published in the journal Advances in Atmospheric Sciences, also showed that the oceans are warming at an increasing speed.

A new analysis shows the world's oceans were the warmest in 2019 than any other time in recorded human history, especially between the surface and a depth of 2,000 meters. The study, conducted by an international team of 14 scientists from 11 institutes across the world, also concludes that the past 10 years have been the warmest on record for global ocean temperatures, with the past five years holding the highest record.

The world is warming despite natural fluctuations from the El Niño cycle.

Global temperature leaped more than 0.4°C (0.7°F) during the past two years, the 12-month average peaking in August 2024 at +1.6°C relative to the temperature at the beginning of last century (the 1880-1920 average). This temperature jump was spurred by one of the periodic tropical El Niño warming events, but many Earth scientists were baffled by the magnitude of the global warming, which was twice as large as expected for the weak 2023-2024 El Niño.

Zeeschildpadden keren elk jaar vroeger terug naar hun nestplaatsen om de stijgende temperatuur te compenseren.

... An “acid” test of our interpretation will be provided by the 2025 global temperature: unlike the 1997-98 and 2015-16 El Ninos, which were followed by global cooling of more than 0.3°C and 0.2°C, respectively, we expect global temperature in 2025 to remain near or above the 1.5°C level. Indeed, the 2025 might even set a new record despite the present weak La Nina. There are two independent reasons. First, the “new” climate forcing due to reduction of sulfate aerosols over the ocean remains in place, and, second, high climate sensitivity (~4.5°C for doubled CO2) implies that the warming from recently added forcings is still growing significantly.