Overview
- The Nature Climate Change study, published Monday, estimates the global average temperature will likely reach 1.5°C above preindustrial levels around 2029 using a combined model‑observation method.
- Researchers used a technique called Kriging for Climate Change (KCC) to merge many climate model simulations with real temperature records so they could map warming at regional scales.
- The analysis shows sharp regional differences by 2025, with the Russian Arctic near 3.3°C, northeastern North America about 2.6°C, much of western and central Europe above 2°C, and places such as New Zealand close to 1.0°C.
- The team attributes nearly all observed regional warming to human causes, identifies greenhouse gases as the main driver, and finds aerosols have partly masked warming in some industrial Northern Hemisphere regions.
- Official services note single years have already hit 1.5°C and some countries report larger national warming, but experts stress multi‑year averages and model choices matter for formally declaring a sustained crossing and for planning adaptation and finance.