humid

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

Solar forests

January 22, 2024 By EarthWise Leave a Comment

Forests are one of the most iconic symbols of the power and diversity of nature but beyond that, their thick vegetation is crucial to the stability and balance of the Earth’s climate. This is because the photosynthesis that powers the growth of plants removes carbon dioxide from the air. Cutting down forests – especially the evergreen forests of the tropics – has played a significant role in the increasing climate crisis. For this reason, many environmental initiatives focus on restoring destroyed forests and planting new trees.

But the truth is, even if we were to cover the entire surface of the planet with trees, there would still not be enough photosynthesis going on to absorb the huge surplus of carbon dioxide that people have been pumping into the atmosphere for the past 150 years.

A study by the Weizmann Institute of Science in Israel looked at the impact of erecting fields of dark covered solar panels – so-called solar forests – that would generate electricity, thereby replacing power stations that use fossil fuels. But dark fields absorb heat which eventually returns to the atmosphere.

The question is: what is the best use of a plot of land in terms of the effect on the climate? Planting a forest or erecting fields of solar panels?

The answer depends on where the land is. In arid environments, building solar farms is far more effective and practical than planting forests. But in humid places, forests currently absorb close to a third of humanity’s annual carbon emissions.

The study concludes that combining planting and rehabilitating forests in humid regions and erecting fields of solar panels in arid regions is the most effective strategy.

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The Solar Forest

Photo, posted December 27, 2015, courtesy of Gerry Machen via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

The Hottest Summer | Earth Wise

October 13, 2023 By EarthWise Leave a Comment

It was a very rainy and relatively cool summer in much of New England as well as in New York’s Capital Region, where Earth Wise originates. Despite that fact, according to NASA scientists, the summer of 2023 was the Earth’s hottest since global record keeping began in 1880.

The months of June, July, and August taken together were .41 degrees Fahrenheit warmer than any other summer on record as well as being 2.1 degrees warmer than the average summer between 1951 and 1980.

The record summer heat was marked by heatwaves in South America, Japan, Europe, and the US. The heat exacerbated wildfires in Canada that dumped smoke across much of the northern tier of our country and also led to severe rainfall in Europe. All sorts of temperature records were set in places across the globe.

According to NASA, exceptionally high sea surface temperatures, fueled in part by the reemergence of El Niño in the Pacific, were a major factor in the summer’s record warmth.

The record-breaking heat of this summer continues a long-term trend of warming. Scientists around the world have been tracking the warming that is driven primarily by human-caused greenhouse gas emissions. The combination of this background warming and the marine heatwaves set the stage for new temperature records. The El Niño was enough to tip the scales.

In the current environment, heat waves will last longer, be hotter, and be more punishing. The atmosphere can hold more water producing hot and humid conditions that are harder for the human body to endure.

Scientists are expecting the biggest impacts of El Niño in the early parts of next year. We can expect to see extreme weather of many kinds over the next year.

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NASA Announces Summer 2023 Hottest on Record

Photo, posted June 8, 2023, courtesy of Anthony Quintano via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Tick-Borne Pathogens In Canada | Earth Wise

December 27, 2022 By EarthWise Leave a Comment

Measuring only three to five millimeters in size, tiny ticks are a big problem. They are widely distributed in many parts of the world, especially in warm and humid climates. Ticks are arachnids – not insects – meaning they’re more closely related to spiders than to flies or mosquitos. They are external parasites that feast on the blood of birds, reptiles, amphibians, and mammals – including humans.

In the United States, ticks are responsible for spreading potentially life-threatening infectious diseases. According to estimates from the Centers for Disease Control and Prevention, ticks infect more than 300,000 people with Lyme disease in the U.S. every year, and the numbers continue to rise. Other common tick-borne diseases include anaplasmosis, babesiosis, Rocky Mountain Spotted Fever, and powassan encephalitis.

Ticks are becoming a problem in Canada as well. According to a new study by researchers from McGill University and the University of Ottawa, tick-borne pathogens are on the rise in Central Canada – a region where ticks were never previously detected.

In the study, the researchers collected ticks across Ontario and Quebec. They found that five emerging pathogens were present across their study sites, including the pathogens that cause Lyme disease and babesiosis. The researchers also found that pathogens can transmit in different ways. Typically, pathogens are transmitted to a tick after feeding from the blood of an infected host, like a small mammal. But the research team found evidence of pathogens that could be directly transmitted from adult female ticks to larval ticks.

According to the researchers, more comprehensive testing and tracking is needed to detect the spread and risks of tick-borne pathogens to humans and wildlife in Canada.

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Tick-borne pathogens increasingly widespread in Central Canada

Photo, posted May 4, 2009, courtesy of Jerry Kirkhart via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio