A team of scientists led by the German Centre for Integrative Biodiversity Research (iDiv), the Helmholtz Centre for Environmental Research (UFZ), and Leipzig University has developed a new method to track the Earth’s greenness – a key indicator of vegetation health and activity – by calculating its centre of mass.

Researchers from the Indian Institute of Technology Gandhinagar and the Helmholtz Centre for Environmental Research (Leipzig) have shown how natural ocean cycles and rainfall patterns prevent a synchronised, planet‑wide drought and global-scale agricultural collapse. Based on over 100 years of climate data, the study finds that though warming increases drought severity, synchronised droughts are rarer than expected, affecting only 1.8–6.5% of land at any time. By treating droughts as a connected global system, the research team has identified key “drought hubs” and early‑warning regions that can help stabilise food markets.

The summer monsoon season runs from June through September and delivers roughly 80% of the rain India receives in a year. Over the last few decades, the amount of rain has increased while the concentration of rainfall has shifted west over the continent. Now, researchers at the Indian Institute of Tropical Meteorology have found that the intensity and location of the late-season rainfall is significantly influenced by Arctic sea ice melt that occurs earlier in the summer.

Several studies have predicted that not all geomagnetic reversals have been discovered, but it was unknown in which periods they might be hidden. The researchers led by the National Institute of Polar Research used a statistical method called adaptive kernel density estimation to model the frequency of geomagnetic reversals at high temporal resolution. Based on the model, they proposed that undiscovered reversals may be hidden in four periods after the Cretaceous Normal Superchron.

How much will heat, flooding, drought and storms increase as a result of human-induced climate change? In a groundbreaking study, climate researcher Gottfried Kirchengast and his team at the University of Graz have developed a new method for computing the hazards from extreme events: it can compute all relevant hazard metrics for events such as heat waves, floods and droughts in any region worldwide with unprecedented information content. Using it for Europe, the researchers found that anthropogenic climate change has caused a tenfold increase in extreme heat in recent decades. The study, published in the journal Weather and Climate Extremes, also provides a basis for better quantifying the damage to people, ecosystems and infrastructure.