climate – Schoemann

09/09/202608/09/2026

Heat Health Protection

The heat waves of 2026 had serious health impacts in Europe and beyond. Hence, it is urgent to propose better protections to shield people from negative heat exposure which worsened the health of millions of people. Digital tools which work to personalize heat warnings and increase preventive strategies like drinking water or reduce physical activity outside during the hottest times of the day. Sounds simple, but thousands of people continue to put themselves at risk to suffer seriously from heat exposure. The macro-level general population warning’s could be much more specific if they included additionally the relevant medical conditions of an individual (Du et al. 2026). Prior health conditions affect the general preparedness to cope with heat. We have an obvious case of bi-directional causality. A worsening heat health spiral could be at the origin of so many premature deaths during heat waves. Search for “cool locations” should be considered very seriously for heat-health protection.

26/08/202625/08/2026

Loss of green

In many instances we learn only if we have lost something. The loss of biodiversity is rather abstract. The loss of a favorite green, allay or park due to a severe drought, however, is fairly visible. The point of departure of the Tour de France more than 100 years ago in Montgeron and the green alley which was built to allow to ride through the Forêt de Sénart to Fontainebleau has suffered from the 2026 repeated heatwaves and droughts. The scientific evidence accumulates to the manmade responsibilities over time. What used to be a fantastic area for leisure and walks after work has turned into a dusty place. Even the recent efforts to improve the greenery further has been surpassed by the unexpected lack of precipitation, although forecasted by some scientists. The costs of climate change, global warming and therefore more difficult water management become pressing policy issues.

22/08/202621/08/2026

Sleepless sleep

The reasons why we pass an almost sleepless night or sleep are manifold. Too much to drink, eat or partying are just among the more social ones. The neighbour’s cat or cock may be another one. A recent comment by Pixin Gong (2026) outlined a whole research agenda on heat and sleep deficits. What is the threshold of bad sleep? Do we accumulate over days and how do we recover from it? Which measures and metrics are important? How to determine the social gradient of sleep deficits? The research base is largely missing due to neglecting the link of temperature as crucial impact on sleep in addition to melatonin levels. The implications of expected results can be far reaching like re-organization of homes, urban planning and architecture. (Image on the right: Rooster 1924 and Sleeping Muse 1910 by Brancusi, Centre Pompidou Paris in Berlin Exhibition Neue Nationalgalerie 2026-5)

21/08/202621/08/2026

Countryside warming

During summer inner cities heat up more than the rest of the country. This is largely due to the well-known urban heat island effect. However, on top of this effect scientific evidence based on high resolution climate data show that the nowadays countrysides are heating up faster than cities. Catching up with negative climate evolutions is a worrisome recent development. The usual “wealthy person’s climate refugee strategy” to leave the inner cities in summer and move to the cooler countryside becomes more elitist. The global space of cooler refugee regions is shrinking just as biodiversity is reducing at a fast pace.

20/08/202619/08/2026

Urban heat island

Heat in the city, is a real problem. Of course, some like it hot and that’s why they move to inner cities and specific quarters in a city. However, this is not the scientific definition of the “urban heat island effect”. The former issue is more a socio-legal-moral concern, whereas the latter has physics or geophysical effects at its origin.
More concrete and asphalt instead of leafy islands in inner cities create hot micro-climates as sunlight and warmth get stored during the day and feeds back into homes during nights. If the cooling effect of wind and humidity become trapped outside of building blocks an urban heat island can reach very uncomfortable levels. Add underground car parking, tunnels for traffic and public transport to the scenario and the unhealthy limits of heat over the summer are exceeded for months rather than weeks. Geophysical factors like altitude, mountains, river or seaside proximity are additional factors to consider, but the narrow urban heat island effect is a rather robust finding across the world even if the precise measurement and potential remedies of it are under scientific debate.

19/08/202618/08/2026

Ocean Acidification

No, the abbreviation of acidification is not AC/DC. Acidification stands for the process that our oceans turn more acid due to the absorption of CO₂ from the atmosphere. This has several harmful consequences. Lower calcification, slower growth of corals and mollusks (oysters and mussels) for example, shall reduce biodiversity in the medium term of species with calcium-based skeletons. The UN highlights this in several reports, but action upon this evidence (Ifremer 2026) is slow or even absent. Besides the acidification, the oceans have increasing temperatures. Some researchers frame this process already as the “tropicalisation”, the warming of sea water and migration of fish according depending on their preferred or necessary temperatures of sea water. Some move to cooler water, other species move into or “invade” due to higher temperatures.
This can be observed and studied in citizen science projects across the globe and by tourists with a little interests in what is happening near the beaches. Just take a litmus-strip with you to test the basic or alkaline pH-value of the sea water in a glass of sea water. Then add a bit of soda water and test again. That’s a bit exaggerating, what acidification of oceans is about, but the underlying mechanisms is the same.

13/08/202612/08/2026

Heat Mortality

Heat waves can be deadly for humans, animals and vegetation. According to the cumulative estimates by the RKI (Robert Koch Institute) in Germany up until 2026-7-26 there were 11.900 deaths within the confidence interval between 10.700 to 13.100 of the estimates. About 6.000 of the people who died due to the heat waves were aged 85+. 1.140 were attributed to persons younger than 65. Chronological age appears to be a significant factor as frequently chronic diseases accumulate in older individuals as well as poly-pharmacy. Hydration levels and deficiencies are associated with the increased mortality, but we have few or no precise measures of hydration readily available for people before it becomes an emergency (cognitive impairments). We know a lot about precision medicine. However, precision hydration for people remains rather arbitrary.

10/08/202609/08/2026

Climate Anxiety

The events of several wildfires and a too hot summer in 2026 have raised the level of anxiety related to climate change for many people. From the field of economics we know that the fear of an economic recession can be as bad for the economy as a statistical economic downturn. The anxiety about climate related bad events can trigger or worsen symptoms of depression. The research by Zacher and Kühner (2026) shows that psychological evidence supports this hypothesis. The 1 year follow-up clarified, that the opposite direction of causality is not supported by the data analysis. A pre-existing depression is not worsening due to climate change. The consequence of these results is that the total number of persons with depression is likely to increase with an additional source of depression, for example after experiencing a wildfire. Oceans are warming and the number of injuries on beaches due to poisoning from algae or medusaes (jellyfish) become more frequent as well. Lots of sources for increasing climate related anxieties. In the economic costs of global warming and climate change we frame this as second round effects of climate change.

06/08/202606/08/2026

Cool Cooling

The human body has a pretty cool cooling mechanism to protect our functions. This ranges from the brain to our toes. Even we are usually not to keen on sweat, it still is our best way to achieve cooling for our bodies. Physical, for some also mental exercise can heat us up quite a bit. Water on our skin allows to extract most of the heat from our bodies due to the evaporation effect. This is our natural survival mechanism during heat waves or exhaustive exercise. Not all people sweat easily nor similarly in all areas of their bodies, but externally applied water for evaporation reasons does the same trick. Fever reduction through a humid cloth is another well known example of a proven “medical” cooling device. In architecture or home cooling we might exploit the evaporation cooling mechanism to create ambient temperatures in our home, office or home office. Multiple layers of humid structures or a special dice shape can create vast cooling surfaces even in tiny spaces (Stavric 2026). Cool cooling solutions can assist us in many ways without negative impact on global warming.

04/08/202602/08/2026

Stinging issues

Sometimes a topic can make it into the headlines only if it is a stinging issue. The fact that certain mosquitoes travel and survive further north due to global warming is indeed such a stinging issue. As the living conditions for mosquitoes depend on warm weather conditions particularly during (tropical) nights as well as water availability for breeding purposes, the spread of mosquitoes can already be observed studying the spread of dengue fever, malaria and chikungunya in some southern European and American countries. Climate change, especially the warming parts of it, shall bring home a number of stinging issues and consequences to people who didn’t seem to know or care about the spread of spread of infectious diseases.

Tag: climate

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