human lives

Last year was the hottest year on record and the ten hottest years on record have in fact been the last ten years. Ocean heat reached a record high last year and, along with it, global sea levels. Those are rising twice as fast as they did in the 1990s.

The World Meteorological Organization reports that the global atmospheric concentration of carbon dioxide reached a new observed high in 2023, which is the latest year for which global annual figures are available. The level was 420 ppm, which is the highest level it has been in 800,000 years.

The increase in carbon dioxide levels was the fourth largest one-year change since modern measurement began in the 1950s. The rate of growth is typically higher in El Niño years because of increases from fire emissions and reduced terrestrial carbon sinks.

Concentrations of methane and nitrous oxide – which are two other key greenhouse gases – also reached record high observed levels in 2023. Levels of both of these gases have also continued to increase in 2024.

The annually averaged global mean near-surface temperature in 2024 was 1.55 degrees Celsius above the 1850-1900 average. Apart from being the warmest year in the 175 years records have been kept, it is also above the 1.5-degree limit set as the goal of the Paris Climate Agreement. While a single year above 1.5 degrees of warming does not mean that the efforts to limit global warming have failed, it is a strong warning that the risks to human lives, economies, and the planet are increasing.

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Carbon Dioxide Levels Highest in 800,000 Years

Photo, posted January 30, 2018, courtesy of Johannes Grim via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

If it seems like natural disasters happen more frequently than they used to, that is because they do. A new report from the United Nations entitled “The Human Cost of Disasters 2000-2019” provides the facts. From 2000 to 2019, there were 7,348 natural disasters around the world, compared with 4,212 natural disasters from 1980-1999.

The culprit is the climate. Climate-related disasters increased from 3,556 events during the 1980-1999 period to 6,681 in the past 20 years, again an increase of more than 3,000.

The global economic losses associated with natural disasters have been staggering. The earlier 20-year period saw $1.63 trillion in losses while the recent period resulted in $2.97 trillion in losses. Disasters killed 1.19 million people in the earlier period and 1.23 million in the recent period. It is a testimonial to the skills and efforts of disaster management agencies, civil protection departments, fire brigades, public health authorities, the Red Cross and Red Crescent, and many NGOs that the cost in human lives was not much greater over the past 20 years.

According to a statement from the UN, human society is being willfully destructive. They draw that conclusion in light of reviewing the disaster events over the past 20 years and seeing the failure of society to act on science and early warnings to invest in prevention, climate change adaptation, and disaster risk reduction.

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Extreme Weather Events Have Increased Significantly in the Last 20 Years

Photo, posted September 18, 2020, courtesy of the National Guard via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.