Global warming

National weather analysts released their 2023 billion-dollar disasters list on Jan. 9, just as 2024 was getting off to a ferocious start. A blizzard was sweeping across across the Plains and Midwest, and the South and East faced flood risks from extreme downpours. The U.S. set an unwelcome record for weather and climate disasters in 2023, with 28 disasters that exceeded more than US$1 billion in damage each. While it wasn’t the most expensive year overall – the costliest years included multiple hurricane strikes – it had the highest number of billion-dollar storms, floods, droughts and fires of any year since counting began in 1980, with six more than any other year, accounting for inflation. 2023’s billion-dollar disasters. Click the image to expand. NOAA The year’s most expensive disaster started with an unprecedented heat wave that sat over Texas for weeks over...

The year 2023 was marked by extraordinary heat, wildfires and weather disasters. In the U.S., an unprecedented heat wave gripped much of Texas and the Southwest with highs well over 100 degrees Fahrenheit (37.8 Celsius) for the entire month of July. Historic rainfall in April flooded Fort Lauderdale, Florida, with 25 inches of rain in 24 hours. A wave of severe storms in July sent water pouring into cities across Vermont and New York. Another powerful system in December swept up the Atlantic coast with hurricane-like storm surge and heavy rainfall. The West Coast started and ended the year with flooding and mudslides from atmospheric rivers, and California was hit in August by a tropical storm – an extremely rare event there. Wildfires ravaged Hawaii, Louisiana and several other states. And Canada’s worst fire season on record sent thick smoke across large parts of North America. A person walks through a scene of destructio...

Reading down the lengthy final agreement of the COP28 United Nations climate conference held in December 2023, you’ll go a long way before finding a strong, active verb. The lengthy recitation of climate impacts “notes with concern” and occasionally with “significant concern” glaring gaps in countries’ current policies. But while countries volunteered pledges to act, they were less keen to have those pledges framed as binding agreements in the final text. Reactions to COP28’s conclusion have been understandably mixed. Going into the talks, the world was more on track to avert catastrophic warming than it would have been without the 2015 Paris Agreement, but a long way from where it needs to be. Even if all the pledges made at COP28 are implemented, the world will still exceed the Paris goal of keeping global warming under 1.5 degrees Celsius (2.7 Fahrenheit) compared to preindustrial temperatures....

Shortly after the opening ceremony of the 2023 United Nations climate negotiations in Dubai, delegates of nations around the world rose in a standing ovation to celebrate a long-awaited agreement to launch a loss and damage fund to help vulnerable countries recover from climate-related disasters. But the applause might not yet be warranted. The deal itself leaves much undecided and has been met with criticism by climate justice advocates and front-line communities. I teach global environmental politics and climate justice and have been attending and observing these negotiations for over a decade to follow the demands for just climate solutions, including loss and damage compensation for countries that have done the least to cause climate change. COP28 President Sultan Ahmed al-Jaber, center, walks with world leaders and representatives of countries to the climate summit’s opening ceremony. The loss and damage fund was one of the fi...

Esnart Chongani boils five small pumpkins over firewood outside her home in Makoka, a village in Zambia’s Chongwe District, not far from the capital, Lusaka. She tests to make sure they’re tender, drains the water, which she will save for later, and then carefully divides them into 12 portions as her family sits down for lunch. It’s a healthy dish, but there’s scarcely enough to go around, and this is the only meal any of them will eat today. Chongani, 76, isn’t used to rationing. She’s the proud owner of a seven-acre farm that she has worked on for decades. Ordinarily, her family harvests more than two tons of maize in April. But this year, southern Africa was hit by its worst mid-season dry spell in over a century, and for the first time in her life, they have harvested nothing. “I cannot remember anything like this,” says Chongani. “People are so hungry they are stealing food. The generosity o...

European Union countries approved a law on Monday (27 May) to impose methane emissions limits on Europe’s oil and gas imports from 2030, pressuring international suppliers to cut leaks of the potent greenhouse gas. Methane is the main component of the natural gas countries burn in power plants and to heat homes. It is also the second-biggest cause of climate change after carbon dioxide, and fuels global warming when it escapes into the atmosphere from leaky oil and gas pipelines and infrastructure. Ministers from EU countries gave their governments’ final approval to the policy at a meeting in Brussels, meaning it can now enter into force. Only Hungary voted against it. From 2030, the EU will impose “maximum methane intensity values” on fossil fuels placed on the European market. The European Commission will design the exact methane limits by that date. Importers of oil and gas that flout the limit could face financial penalties....

They are supposed to be the climate-savers’ gold standard — the key data on which the world relies in its efforts to lower greenhouse gas emissions and hold global warming in check. But the national inventories of emissions supplied to the United Nations climate convention (UNFCCC) by most countries are anything but reliable, according to a growing body of research. The data supplied to the UNFCCC, and published on its website, are typically out of date, inconsistent, and incomplete. For most countries, “I would not put much value, if any, on the submissions,” says Glen Peters of the Centre for International Climate Research in Norway, a longtime analyst of emissions trends. The data from large emitters is as much open to questions as that from smaller and less industrialised nations. In China, the uncertainties around its carbon dioxide emissions from burning coal are larger than the total emissions of many major industrial coun...