article thumbnail

Why Were 2023 and 2024 So Hot?

Union of Concerned Scientists

The year 2023 was by far the warmest in Earths recorded history, and perhaps in the past 100,000 years , shattering the previous record set in 2016 by 0.27C (0.49F). According to recent data from NOAAs National Center for Environmental Information, 2024 is likely to be even warmer than 2023. But why were 2023 and 2024 so warm?

article thumbnail

Why Climate Scientists Are Sounding the Alarm on the Ocean Circulation System AMOC

Union of Concerned Scientists

Last month, 44 climate scientists from 15 countries wrote an open letter to the Nordic Council of Ministers highlighting the risk of a potential collapse of the Atlantic Meridional Overturning Circulation (AMOC), a critical ocean current system in the Atlantic Ocean. Picture Quebec City in Canada and London in the UK.

Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

Ocean circulation going South?

Real Climate

Some intriguing new measurements of salinity in the oceans around Antarctica have set off reams of sensationalist speculations. There have also been some hiccups in the mass loss from continental ice sheet, with actual increases in mass from 2020 to about 2023. Where do we start?

article thumbnail

WMO: Update on 2023/4 Anomalies

Real Climate

Readers will recall our previou s discussions on the anomalies in 2023 in particular, and the myriad of ideas that people have published to explain them. There is always something of course – the weather is variable – but for 2023 and 2024 the residuals were higher than for any other year in decades.

article thumbnail

Record marine heatwaves may signal a permanent shift in the oceans

New Scientist

Fierce marine heatwaves were recorded globally in 2023 and 2024, and some researchers now believe they mark the start of a fundamental change with devastating consequences for life on Earth

article thumbnail

SCOTUS Rules in Favor of Sewage: You Can’t Make This Sh** Up

Union of Concerned Scientists

Whats the point of a beach adventure if you cant even go into the ocean? How does raw sewage end up in our oceans and rivers? In some cities, a combined sewer system means that usually both wastewater and stormwater get treated to the same high standards before releasing into the ocean. San Francisco City and County v.

article thumbnail

Twenty years of blogging in hindsight

Real Climate

It shows the atmospheric concentrations of carbon dioxide (CO 2 ) and tells a story about the carbon cycle, involving Earth’s crust, the atmosphere, land surface, the biosphere, and the oceans. I wrote a post on the IPCC’s summary for policymakers (SPM) on this in 2023, but without much effect.