• Professor of Atmospheric Sciences, Climate Change Research Centre, UNSW
Surface de la Terre vue depuis l’espace, on peut observer la fine couche de l’atmosphère qui la recouvre et le Soleil qui brille au-dessus. Nasa

La Terre retient bien plus de chaleur que ne le prévoient les modèles climatiques, et ce n’est pas une bonne nouvelle

Les mesures de la quantité de chaleur piégée par la Terre dépassent largement les prévisions des modèles climatiques, et les scientifiques ont encore du mal à l’expliquer.
Shutterstock

Yes, a few climate models give unexpected predictions – but the technology remains a powerful tool

An article in the eminent US magazine Science has triggered debate over whether scientists should use climate models. Here’s what you should know about climate models ahead of today’s IPCC report.
A reported 350 jobs will be cut from CSIRO’s staff. David McClenaghan/CSIRO/Wikimedia Commons

CSIRO is poised to slash climate research jobs – experts react

CSIRO is set to cut dozens of jobs from its climate research units, as part of a wider series of job losses to be formally announced today.
A new analysis of historic weather balloon data reveals that the troposphere has been warming as climate models predicted. NOAA/Wikimedia Commons

Climate meme debunked as the ‘tropospheric hot spot’ is found

Climate models have been criticised because observations could not find the predicted “hot spot” of strong warming in the troposphere. But analyses now show that the tropospheric hot spot is indeed real.
Charles Tambiah’s unravelling of this basket star is a finalist in the 2014 Australian Museum New Scientist Eureka Prize for Science Photography. Charles Tambiah/Australian Museum Eureka Prizes

Hendra virus to basket stars – Eureka Prize finalists announced

A climate change researcher, evolutionary biologist and science photographer are among the finalists for the 2014 Australia Museum Eureka Prizes. The annual Eureka Prizes recognise those who have made…
Understanding clouds is crucial to understanding whether temperatures will rise quickly in coming decades. Visun Khankasem/Shutterstock.com

How clouds can make climate change worse than we thought

The amount of global warming we can expect in the future has been a tough question to pin down. A new study that I led with colleagues in France has enabled us to come up with a more accurate analysis…
There is still scientific work to do on attributing specific events to climate change, but we know enough to make policy decisions. DeGust/Flickr

IPCC Fifth Assessment Report: more certainty, not much news

The part of Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report, dealing with the physical basis of climate change, has now been released. The report - released today in Stockholm…
The new paper shows that surface incident solar radiation (Rs) over land globally peaked in the 1930s, substantially decreased from the 1940s to the 1970s, and changed little after that. Jong Soo(Peter) Lee

Study offers clues on 20th century global warming wobbles

The amount of solar radiation passing through Earth’s atmosphere and reaching the ground globally peaked in the 1930s, substantially decreased from the 1940s to the 1970s, and changed little after that…
Tropical forests such as this in Borneo remove large quantities of atmospheric carbon dioxide. H-D Viktor Boehm

As temperatures rise, tropical forests absorb less CO2

Rising temperatures are linked to a decrease in carbon dioxide (CO2) absorption by tropical forests, according to a 50-year study published today. Greenhouse gases, such as CO2, contribute to global warming…
Measurements in the skies over Hawaii show we’ve reached a carbon dioxide milestone, but geo-engineering won’t get us off the hook. J.S. Nawati

Carbon dioxide hits a new high, but geo‑engineering won’t help

This week, carbon dioxide concentration in the atmosphere finally crossed the 400 parts-per-million mark. The last time that happened was 3-5 million years ago during the Pliocene epoch, several million…
An infographic accompanying the report showed how different parts of Australia would be affected by global warming-induced extreme weather events. Climate Commission

Extreme weather threatens crops, cities: official report

Extreme weather caused by global warming poses a growing risk to Australia’s crop lands, cities and iconic sites like Kakadu National Park, according to a new report that calls for global emissions to…
Dr Rajendra Pachauri, chair of the Intergovernmental Panel for Climate Change (IPCC), which says it regrets the leak of it’s latest major report. AAP Image/Paul Miller

Human role in climate change now virtually certain: leaked IPCC report

A leaked draft report by the world’s top climate scientists has found that is virtually certain that humans are causing climate change but parts of it have been wildly misinterpreted by climate change…
The climate may vary from year to year but the overall trend is toward a much hotter planet, scientists say. http://www.flickr.com/photos/cimexus

20 years on, climate change projections have come true

Climate change predictions made 20 years ago have so far proved accurate, suggesting that the world is indeed on track to a radical climate shift, according to a new paper published today. In 1990, the…
This is carbon. The carbon you keep hearing about on the news is probably carbon dioxide. It doesn’t look like this. Rui Costa

What is ‘carbon pollution’ and why are we trying to stop it?

You’ll doubtless have heard Australia is introducing a “carbon tax” this Sunday to reduce “carbon pollution”. What is being controlled is not just any carbon but emissions of a specific gas, carbon dioxide…

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