highs

Solar power in Europe

July 31, 2025 By EarthWise Leave a Comment

In June, solar power was the largest source of electricity in the European Union for the first time. Solar supplied a record 22% of the power for the 27-country bloc. At least 13 of the countries produced new monthly highs for solar power in June. The Netherlands got more than 40% of its electricity from solar power and Greece 35%. Other countries with record solar generation included France, Germany, and Sweden.

These solar records are for the most part a result of continuing installations of solar power in recent years as well as long stretches of hot and sunny weather.

Across the EU, nuclear power was the second largest source of electricity, followed by wind, natural gas, and hydropower. Coal generated only 6% of the EU’s electricity, a new monthly low. In fact, 15 countries in the EU don’t use any coal to generate electricity at all, including Austria, Belgium, and Ireland, which shut down its last coal plant in June. All fossil fuels combined generated less than 24% of EU electricity in June, just a little more than the record low of 22.9% set in May, 2024. Natural gas generation was somewhat higher than last year because of lower levels of hydro and wind generation.

Europe has been grappling with brutal heatwaves with triple-digit temperatures in multiple countries. The heatwaves were, of course, accompanied by plentiful sunshine, which at least provided abundant solar power at midday, when there was the greatest demand for air conditioning. This helped to take some of the pressure off the grid and helped to prevent blackouts.

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In a First, Solar Was Europe’s Biggest Source of Power Last Month

Photo, posted May 28, 2025, courtesy of Mike Popp via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

The oceans are warming faster

May 21, 2025 By EarthWise Leave a Comment

A new study has shown that the rate of ocean warming has more than quadrupled over the past 40 years. The study, by researchers at the University of Reading in the UK, helps to explain why there have been unprecedented ocean temperatures in 2023 and 2024.

Global ocean temperatures hit record highs for 450 days straight in 2023 and early 2024. Some of this unusual warmth came from the El Niño that was taking place at the time, but the rest of the increased temperature came from the sea surface warming up more quickly over the past 10 years than in previous decades. In the late 1980s, ocean temperatures were rising at a rate of 0.06 degrees Celsius per decade. According to the recent research, they are now increasing at 0.27 degrees per decade.

The acceleration of ocean warming is driven by growth in the Earth’s energy imbalance, meaning that more energy from the sun is being absorbed by the Earth than is escaping back into space. This energy imbalance has roughly doubled since 2010 as a result of two factors: increasing greenhouse gas concentrations in the atmosphere and reductions in the Earth’s albedo.

Earth’s albedo, the measure of how much sunlight is reflected back into space, has been declining since the 1970s, primarily due to the decrease in snow and ice cover, especially in the Arctic.

The overall rate of ocean warming observed over recent decade is likely to only increase. This underscores the urgency of reducing fossil fuel burning to avoid even more rapid temperature increases in the future.

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Ocean-surface warming four times faster now than late-1980s

Photo, posted January 18, 2007, courtesy of Alexey Krasavin via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

The hottest day on record

August 21, 2024 By EarthWise Leave a Comment

There have been numerous temperature records set in recent years. Apart from record high temperatures for many places around the world, there were 13 consecutive monthly temperature records set for the planet since the previous summer.

According to NASA data, July 22, 2024, was the hottest day on record. July 21st and 23rd also exceeded the previous daily record, which was set in July last year. The new record was 17.16 degrees Celsius, or about 63 degrees Fahrenheit.

We are not used to thinking in terms of the global average temperature. That is the number that keeps climbing and that climate goals seek to keep from getting too high. The global average temperature is about 59 degrees Fahrenheit. So, on July 22nd, the Earth was about 4 degrees warmer than usual. That may not seem like much, but it takes an enormous amount of energy to raise the temperature of the planet by that amount.

The NASA report shows the global daily temperature throughout the year for the years 1980 to 2024. It clearly shows how much warmer temperatures are now compared with the previous decades.

In many places, people experienced persistent hot weather during the month of July. New York’s Capital Region saw relentless hot and humid weather. There were 9 days with high temperatures in the 90s. July in Albany had a monthly mean temperature of 77.3 degrees, which was the highest in any current resident’s lifetime. This is more than 4 degrees higher than the average over the past 30 years. The last time the average temperature was over 77 was in 1887. July was hot.

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NASA Data Shows July 22 Was Earth’s Hottest Day on Record

Photo, posted October 22, 2016, courtesy of Susanne Nilsson via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio