Science
Explore the science behind weather forecasting — meteorology research, atmospheric phenomena, climate modeling and advances in prediction accuracy.
Portugal's Water Paradox: Full Dams, a Record Heat Wave, and the Slow Drying of the Alentejo
Southern Portugal entered July 2026 with its reservoirs nearly full after an exceptionally wet winter, yet a record heat wave still strained local supply. The honest story is a heat-and-demand squeeze near Lisbon, not an Alentejo drought, set against a real long-term desertification trend in the Baixo Alentejo.
When the Wind Decides: How Reykjanes Volcanic Gas Reaches Iceland's Towns
Iceland's Reykjanes eruptions release sulphur dioxide, a gas heavier than air that pools near the craters and, when the wind is wrong, drifts over towns. Near-source readings have reached thousands of micrograms per cubic metre, but the capital's exposure is episodic and wind-driven, not a permanent inversion sealing everyone indoors.
The Salty Tap: How Drought and Over-Pumping Push Seawater Into Aegean Island Wells
On small Cycladic and Aegean islands, drinking water is pumped from shallow coastal wells where fresh rainwater floats on top of denser seawater. When winter rain fails and summer pumping surges, seawater wedges inland and some wells turn brackish. It is a decades-old problem, sharpened by Greece's hot, dry 2023–24 winter, that islands are now answering with desalination and a national water-resilience plan.
Stones on the Roof: How Slovenia's Burja Wind Shapes the Vipava Valley
In Slovenia's Vipava Valley, a cold downslope gale called the burja weighs roof tiles down with stones and closes the motorway to trucks. Here is how the wind actually forms, how hard it really blows, and why the valley builds and drives around it.
A Border Drawn on Ice: How a Melting Glacier Moved the Swiss-Italian Frontier
As the Theodul Glacier retreats below the Matterhorn, the ice-defined watershed that marks the Swiss-Italian border near Testa Grigia has shifted, leaving most of a single high-altitude refuge on Swiss soil. Far from the "administrative chaos" the story is often given, the two states settled the change through a calm, largely concluded bilateral process.
Etna's Ash Rain: How the Wind Decides Which Sicilian Towns Get Buried
Mount Etna's recurring fallout of ash and lapilli is a volcanic hazard, not a weather event, but wind direction at eruption-column height decides which flank towns get buried. Italy's Civil Protection says the ashfall is not a danger to life; the real cost is chronic and financial, with clogged drains, loaded roofs, ruined crops and street cleanups that have run into tens of millions of euros since 2021.
Warmer Seas, Not Weaker Plants: What Marine Heatwaves Really Mean for Malta's Water
A record-warm Mediterranean is often blamed for straining Malta's desalination plants, but the physics runs the other way: warmer feed water makes reverse osmosis more efficient, cutting energy use by roughly 10–30%. The genuine marine-heatwave threats to Malta's supply are subtler and real: worse product-water quality as salt and boron slip through the membranes, biofouling and algal blooms clogging the intakes, and a deepening, energy-hungry dependence on desalination for nearly two thirds of the island's tap water.
The Volcano's Gift: How Rupite's Geothermal Heat Powers a Bulgarian Greenhouse Economy
The little valley of Rupite, by the extinct Kozhuh volcano in Bulgaria's warmest region, has mineral springs of around 75C that warm the local ground and air. Growers tap that geothermal heat to warm greenhouses, cutting their biggest winter cost and bringing early vegetables to market ahead of the rest of the country. It is not free energy, but it is genuinely cheap heat, and a real local advantage.
The Sahara of Oltenia: How a Man-Made Desert Is Reshaping Farming in Southern Romania
In southern Romania, around Dabuleni in Dolj county, real sand dunes are drifting over former farmland: the 'Sahara of Oltenia.' Triggered by the clearing of communist-era forest shelterbelts and broken irrigation, and worsened by hotter summers, the sand is reckoned to spread by around 1,000 hectares a year. Wheat and maize fail here now, so farmers have switched to the region's famous watermelons and drought-tolerant crops like peanuts and sweet potatoes.
Poland's Desert That Isn't: The Bledow Sands, the 70C Surface and the Real Fire Risk
The Bledow sands in southern Poland look like a slice of the Sahara, and the bare surface can bake to around 70C in summer. But it is not a true climatic desert, it rains plenty there, and it does not act as a hairdryer drying out the surrounding forests. The real fire risk belongs to the flammable pine forests on sandy soil, managed by Poland's national fire-danger bans.
Arctic Mirages: How Abisko's Inversions Bend Light, and What That Really Means
In the cold, clear air of the Swedish Arctic, strong temperature inversions over snow bend light into superior mirages and the towering Fata Morgana. The optics are real and the region is prime territory for them. The same bending can in principle affect radar and fool the eye about distance, but claims that the mirages routinely disrupt local rescue or radar operations are not supported.
Europe's Largest Sand and the Drought Around It: The Deliblato Microclimate and Vojvodina's Fields
The Deliblato Sands are the largest sand area in Europe, with a fierce, dry, wind-blasted microclimate, and they sit inside Vojvodina, Serbia's drought-stricken breadbasket. It is tempting to blame the sand for the failing crops, but the two are neighbours, not cause and effect: the sands were tamed by centuries of planting, and the drought is driven by the warming regional climate.
The 170-Kilometre Mirror: What a Wall of Glass Would Really Do to a Desert
A mirrored wall 170 km long and 500 m tall is one of modern architecture's most striking images, but it is mostly still a drawing, and the science is not what the renders suggest. A mirror reflects the desert sun rather than superheating the sand. The real concerns are glare, an unstudied barrier effect on local winds, and above all the danger to the billions of migrating birds whose flyway it would cross.
Can a City Stay at 22°C in a 45°C Desert? The Physics Behind The Line's Promise
The promise is a desert city held at a gentle 22°C all year by natural ventilation and the shape of its buildings, with no energy-hungry air conditioning. As physics, the claim does not hold: moving air faster does not cool it, and 45°C air channelled through a gap is still 45°C. Holding a comfortable indoor climate against desert heat is fundamentally a job for active cooling. Clever passive design cuts the cooling load, but it cannot replace it.
Pyrocumulus: How Wildfires Build Their Own Storms, and Why Hikers Should Watch the Sky
When a wildfire's heat is intense enough, its updraft builds a towering pyrocumulus cloud, and if it grows into a pyrocumulonimbus, the fire has created its own thunderstorm. These fire-storms throw dry lightning that ignites new blazes tens of kilometres away and downburst winds that make a fire behave unpredictably. Learning to recognise one forming is a genuine safety skill for anyone in fire country.
The Atlantic Cold Blob: A Cooling Ocean in a Warming World
The North Atlantic 'cold blob' south of Greenland has cooled by roughly 1°C since 1900 even as the global ocean warmed — widely read as a fingerprint of a slowing Atlantic overturning circulation (AMOC). Research has linked it to shifts in the summer jet stream that can favour blocking over Europe, but it does not cause any specific heatwave. In the long run a much weaker AMOC could even cool north-west Europe — a contested, low-probability scenario.
The Wet-Bulb Threshold: The Places Pushing Human Physiology to the Limit
Wet-bulb temperature combines heat and humidity to measure whether sweat can still cool you. The famous 35°C wet-bulb figure is a theoretical survivability ceiling; real experiments show the practical danger line for healthy people is lower, around 31°C. Brief, localised exceedances have already been recorded on the Persian Gulf coast and in Pakistan's Indus valley. The hotspots are South Asia, the Gulf and the North China Plain.
Cooling the Concrete: How Cities Are Fighting the Urban Heat Island
Cities run hotter than their surroundings because dark, dense, paved surfaces absorb and trap heat. Reflective materials and large-scale greenery can measurably cool them — but the honest, measured figures are around 2°C of air cooling, not the uniform numbers often quoted. A look at Los Angeles, Medellín, Singapore and more.