Preventing water crises
Küldés e-mailben Facebook Twitter Nyelvváltás
Preventing water crises

The brutal price of air conditioning

According to the 2018 global report of the International Energy Agency, demand for air conditioning will triple by 2050, which will increase electricity consumption and carbon dioxide emissions and thereby accelerate the rate of global warming.

It is forecast that within 30 years, the number of air-conditioned buildings may increase from 1.6 to 5.6 billion, while the one billion tonne annual carbon dioxide emission of the sector will at least double.

Today, about 3.4 billion air conditioners are operating around the world, and they consume 9 percent of the total amount of electricity produced.
By 2050, that ratio will increase
to 12.5 percent.

In the United States and Japan, 90 percent of households have air conditioning, and even China has reached 60 percent. According to a new energy report from Bloomberg, demand has begun to increase in the poorest regions where warming has the strongest impact. This claim is confirmed by a study published in Nature, which states that in India, for instance, the number of presumably cheap and not particularly energy efficient air conditioning units producing cool air could increase from thirty million to as much as a billion by 2050.

Data indicate that cities are warming faster than the global average. Urban climate researchers have found that the drastic warming of urban areas is caused by extra anthropogenic heat, 80 to 90 percent of which is produced by the air conditioning devices operating during the summer in residential and office areas.

Research indicates that in Hong Kong
the extra heat produced by
air conditioning accounts for a
1 Celsius increase in temperature,
even assuming that the outdoor units are perfectly insulated and all buildings have appropriate shading and ventilation.

According to researchers at the Lawrence Berkeley National Laboratory of the University of California, there is a way out of the vicious circle: climate-friendly development of air conditioning technology could reduce the negative impact by 20–25 percent. They believe that improving the efficiency of air conditioners could reduce global greenhouse gas emissions by about 89.7 gigatonnes.

90 percent of US and Japanese households are air-conditioned Photo: Shutterstuck

Source: Qubit

Further information: IEA

The ocean is too hot

From Alaska to California, the temperature of the Pacific Ocean is well above average.

Prague saying goodbye to a record hot summer

Since measurements began in Czechia almost two and a half centuries ago, there has not been a summer as hot as this year’s in Prague, when daily average temperatures reached 22.9 degrees Celsius.

UN High Commissioner: the world is in an alarming state

In her opening address at the 42nd Regular Session of the UN Human Rights Council, Michelle Bachelet, UN High Commissioner for Human Rights, expressed grave concern about the condition of the global environment.

Proposal to introduce the siesta in Germany due to climate change

Climate change is making Germany’s climate warmer, with a series of new high temperature records and heat waves making people’s lives more difficult. In response to the changes, the German Trade Union Confederation has proposed introducing the siesta break to protect workers.

Britain’s birds suffer the impact of climate change

Climate change will have a long-term effect on the future of a third of the bird species studied.

Russia is warming up at over twice the average rate

The country’s average temperature has increased by 0.47 degrees Celsius each decade since 1976.

Future is bleak for European skiing industry

The European skiing industry has to reckon with much less snow and much shorter seasons as a result of climate change. Skiing resorts are responding to the challenge by using snow cannons and employing innovative snow production technologies – a practice that environmentalists believe to be particularly harmful.

Dropping oxygen levels of the oceans to cause ecological crisis

It is a lesser known fact that climate change is also making the oxygen levels of the oceans drop. Over the last 50 years, the average oxygen content of the world’s oceans has dropped by almost 2%, which may have dramatic consequences.

Climate change presents new challenges for healthcare

A study by researchers at the University of Colorado claims that along with new types of psychological problems such as climate anxiety and ecological grief, climate change has many other unfavourable consequences for human health, such as the chronic kidney disease that is becoming increasingly common among agricultural workers.

Forecasts have proven too optimistic

Europe is warming up faster than expected, with climate change increasing the number of extremely hot days while reducing the number of extremely cold ones, reported researchers at ETH Zürich University in their study published in the journal of the American Geophysical Union, the Geophysical Research Letters.