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Record European Heat | Earth Wise

February 13, 2023 By EarthWise Leave a Comment

The new year began with record-breaking heat across Europe.  In fact, on December 31 and January 1, about 5,000 all-time high temperature records for those dates were broken, in some cases by margins of more than 9 degrees Fahrenheit.

On New Year’s Day, eight European countries recorded their warmest January day ever. These were Liechtenstein, the Czech Republic, Poland, the Netherlands, Belarus, Lithuania, Denmark, and Latvia.

Many of the European cities affected by the heat wave would ordinarily be covered in snow at that time of year.  For example, Vaduz, the capital of Liechtenstein, the Czech town of Javornik, and the Polish village of Jodlownik, all recorded peak temperatures between 66 and 68 degrees Fahrenheit.

By the measure of how far above normal temperatures rose, it was the most extreme heat wave in European history.  Last summer saw record-breaking heat waves across much of Europe, but the actual temperature increases over normal were smaller than what just occurred at the beginning of the year.

The source of the exceptional heat was a warm mass of air from the west coast of Africa moving across Europe.  As is the case for any individual weather event, one cannot definitively attribute this one to climate change.  However, it is abundantly clear that because of climate change, extreme weather events of all types are becoming more frequent and more intense.

The unprecedented European weather does have the effect of helping to ease the energy crisis that has gripped the European continent.   The Russian invasion of Ukraine has led to soaring natural gas prices.  The warm weather has meant a lower demand for gas, causing gas prices to drop to their lowest level since the start of the war.

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‘Uncharted territory’: January heat records smashed across Europe

Photo, posted August 13, 2019, courtesy of Herbert Frank via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Generating Hydrogen From Poor-Quality Water | Earth Wise

September 8, 2020 By EarthWise Leave a Comment

generating hydrogen from polluted water

Hydrogen could be the basis of a complete energy system.  It could be stored and transported and could be used to power vehicles and to generate electricity in power plants.  Proponents of the so-called hydrogen economy contend that hydrogen is the best solution to the global energy challenge.  But among the challenges faced by a hydrogen economy is the development of an efficient and green method to produce hydrogen.

The primary carbon-free method of producing hydrogen is to break down water into its constituent elements – hydrogen and oxygen.  This can be done in a number of ways, notably by using electricity in a process called electrolysis.  A method that seems particularly attractive is to use sunlight as the energy source that breaks down the water molecule.

While there is an abundance of water on our planet, only some of it is suitable for people to drink and consume in other ways.    Much of the accessible water on earth is salty or polluted.  So, a technique to obtain hydrogen from water ideally should work with water that is otherwise of little use to people.

Researchers in Russia and the Czech Republic have recently developed a new material that efficiently generates hydrogen molecules by exposing water – even saltwater or polluted water – to sunlight. 

The new material is a three-layer structure composed of a thin film of gold, an ultra-thin layer of platinum, and a metal-organic framework or MOF of chromium compounds and organic molecules.  The MOF layer acts as a filter that gets rid of impurities.

Experiments have demonstrated that 100 square centimeters of the material can generate half a liter of hydrogen in an hour.  The researchers continue to improve the material and increase its efficiency over a broad range of the solar spectrum.

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New Material Can Generate Hydrogen from Salt and Polluted Water

Photo courtesy of Tomsk Polytechnic University.

Earth Wise is a production of WAMC Northeast Public Radio.

Drought In Europe

August 22, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/08/EW-08-22-18-Drought-in-Europe.mp3

Even as Californians fought giant wildfires and Japan struggled with record high temperatures, the unusual summer heat in central and northern Europe has led to the worst drought conditions in over 40 years.

[Read more…] about Drought In Europe

Algae And The Greenland Ice Sheet

February 2, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/02/EW-02-02-18-Algae-and-the-Greenland-Ice-Sheet.mp3

The Greenland Ice Sheet is the second largest ice body in the world, after the Antarctic ice sheet.  It is about 1,500 miles long, nearly 900 miles across at its widest point, and averages more than a mile in thickness.  It has experienced record melting in recent years and is a source of great concern as the climate continues to warm. The Greenland Ice Sheet is losing an estimated 270 billion tons of ice each year.   If the entire sheet were to melt, global sea levels would rise by 24 feet which, of course, would be a world-wide catastrophe.

[Read more…] about Algae And The Greenland Ice Sheet

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