Tag Archives: rising temperatures

How scientists predicted CO2 would breach 400ppm in 2016

thunderstorms on the brazilian horizon
Thunderstorms on the Brazilian Horizon. Credit: NASA

Prof Richard Betts is head of climate impacts research at the Met Office Hadley Centre and chair in climate impacts at the University of Exeter

November 8, 2016 — In the late 1950s, when David Keeling began measuring atmospheric CO2 concentration at the Mauna Loa observatory in Hawaii, the concentration was around 315 parts per million (ppm). In 2016, it topped 400ppm for the first time.  Continue reading How scientists predicted CO2 would breach 400ppm in 2016

Surge in plant growth explains slower CO2 rise over past decade

surge in plant growth
Credit: Jasmina007/iStock/Getty Images

It’s unequivocal that human activity is raising CO2 levels in the atmosphere. But since the start of the century, the level has stopped accelerating and has taken on more of a steady rise instead

November 8, 2016 — This is the conclusion of a new study published in Nature Communications that looks at the factors controlling how plants on land “breathe” CO2, causing the upward march in atmospheric CO2 to periodically speed up and slow down.  Continue reading Surge in plant growth explains slower CO2 rise over past decade

The hydropower paradox: is this energy as clean as it seems

hoover dam near las vegas
Hoover Dam near Las Vegas. Hydroelectric dams are a rich source of greenhouse gas emissions, but the emissions aren’t part of global greenhouse gas inventories. Photograph: Alamy Stock Photo

New research finds that the world’s hydroelectric dams generate a surprising amount of greenhouse gas emissions

November 6, 2016 — In July, UN Secretary Ban Ki-Moon highlighted the role of hydropower in boosting the use of renewable energy globally, when he visited a nonprofit institute in China that helps Continue reading The hydropower paradox: is this energy as clean as it seems

Nicholas Stern: cost of global warming ‘is worse than I feared’

nicholas stern
Nicholas Stern: ‘With hindsight, I now realise that I underestimated the risks. I should have been much stronger in what I said.’ Photograph: David Levenson/Getty Images

Ten years ago the leading economist warned about climate change in a landmark report – he says while there is cause for optimism, the picture is still grim

November 6, 2016 — A lot has happened since Nicholas Stern, then a permanent secretary at the Treasury, produced his landmark review of the impact of climate change 10 years ago. His work was Continue reading Nicholas Stern: cost of global warming ‘is worse than I feared’

Paris climate change agreement enters into force

the eiffel tower lit up during the paris climate talks
The Eiffel tower lit up during the Paris climate talks, referencing the 1.5C target that governments have agreed to pursue efforts to hold temperatures to. Photograph: Francois Mori/AP

Environment groups hail ‘momentous occasion’ but warn governments need to cut carbon emissions more steeply to avoid dangerous global warming

November 4, 2016 — The Paris agreement on climate change enters into force on Friday, marking the first time that governments have agreed legally binding limits to global temperature rises.  Continue reading Paris climate change agreement enters into force

World on track for 3C of warming under current global climate pledges

glacial retreat in western antarctica
Glacial retreat in Western Antarctica. Photograph: Mario Tama/Getty Images

Current climate commitments are insufficient to reduce emissions by the amounts needed to avoid dangerous levels of global warming, says UNEP report

November 3, 2016 — The commitments made by governments on climate change will lead to dangerous levels of global warming because they are incommensurate with the growth of greenhouse gas emissions, according to a new report.  Continue reading World on track for 3C of warming under current global climate pledges

Your carbon footprint destroys 30 square metres of Arctic sea ice a year

a satellite-based view of the arctic
A satellite-based view of the Arctic. Scientists say it will be ice-free in summer in about 20 years under current climate action. Photograph: VIIRS/Suomi NPP/NASA

New research calculates the impact of the average westerner’s carbon emissions to help people understand their own contribution to climate change

November 3, 2016 — The average westerner’s carbon emissions destroy 30 square metres of Arctic sea ice every year, according to new research.  Continue reading Your carbon footprint destroys 30 square metres of Arctic sea ice a year

Planet at its hottest in 115,000 years thanks to climate change, experts say

coal-fired power station
A coal-fired power station. ‘Massive CO2 extraction’ costing trillions is needed in order to avoid runaway temperature rises, says a new paper. Photograph: Florian Gaertner/Photothek via Getty Images

Global warming is said to be bringing temperatures last seen during an interglacial era, when sea level was 6-9 meters (20-30ft) higher than today

October 4, 2016 — The global temperature has increased to a level not seen for 115,000 years, requiring daunting technological advances that will cost the coming generations hundreds of trillions Continue reading Planet at its hottest in 115,000 years thanks to climate change, experts say

Paris climate deal to enter force after EU green light

un climate change agreement
SEALED. European Parliament President Martin Schulz (R) smiles as he stands next to UN Secretary-General Ban Ki-moon prior a voting session on the UN Climate Change agreement struck in Paris last year at the European Parliament in Strasbourg, eastern France, on October 4, 2016. Frederick Florin/AFP

The European Parliament overwhelmingly backs the ratification of the Paris climate deal, paving the way for the landmark pact to come into force globally

STRASBOURG, France (Oct. 4, 2016) — The landmark Paris climate pact is poised to enter into force globally after the European Parliament joined the world’s top polluters in endorsing the deal to slow the planet’s dangerous temperature rise.  Continue reading Paris climate deal to enter force after EU green light

Military experts say climate change poses ‘significant risk’ to security

the pentagon
The Pentagon ordered its officials in January to start incorporating climate change into every major consideration, from weapons testing to preparing troops for war. Photograph: Charles Dharapak/AP

A coalition of 25 prominent members of US national security community warn that higher temperatures and rising seas will inundate bases and fuel conflict

September 14, 2016 — A coalition of 25 military and national security experts, including former advisers to Ronald Reagan and George W Bush, has warned that climate change poses a “significant Continue reading Military experts say climate change poses ‘significant risk’ to security