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Anthropogenic global warming

Analysis and Comment (13)

Tasman Lake, which is fed by melt water from the retreating Tasman Glacier, photographed in March this year. Tasman Lake, which is fed by melt water from the retreating Tasman Glacier, photographed in March this year. Trevor Chinn

New Zealand’s Southern Alps have lost a third of their ice

A third of the permanent snow and ice of New Zealand’s Southern Alps has now disappeared, according to our new research based on National Institute of Water and Atmospheric Research aerial surveys. Since…
The polar vortex played havoc with Niagara Falls (and much of the rest of North America too). The polar vortex played havoc with Niagara Falls (and much of the rest of North America too). EPA/Rick Warne

The ‘pre-Holocene’ climate is returning – and it won’t be fun

A string of events earlier this year provided a sobering snapshot of a global climate system out of whack. Europe suffered devastating floods, Britain’s coastline was mauled, and the polar vortex cast…
Rousing the Kraken: climate change could make life in the ocean much harder. Rousing the Kraken: climate change could make life in the ocean much harder. By Mary Evans Picture Library/Alamy/Wikimedia Commons

IPCC preview: deep trouble brewing in our oceans

Scientists are meeting this week in Yokohama, Japan, to finalise and approve the latest report from the Intergovernmental Panel on Climate Change’s Working Group II – the part of the IPCC process that…
Incredibly cold and very pretty, but not that enlightening when it comes to climate change. Incredibly cold and very pretty, but not that enlightening when it comes to climate change. EPA/RICK WARNE

US cold wave implies nothing about global warming

The central and eastern US has just been in the midst of a major cold wave, with large regions dropping below zero F (-17.7C) and wind chills reaching below -30F (-34C). That is fact. The problem is that…
The role pollution aerosols play in climate change is incredibly complicated. The role pollution aerosols play in climate change is incredibly complicated. CzechR/Flickr

Masking and unmasking of global warming by aerosols

Climate scientists have established a convincing case for the link between increasing concentrations of greenhouse gases and observed warming of the Earth since the 19th century. The Fifth Assessment Report…
We’ll never know how much the globe will warm, but we have a pretty good idea: what are we waiting for? We’ll never know how much the globe will warm, but we have a pretty good idea: what are we waiting for? Luis Ramirez

Uncertainty no excuse for procrastinating on climate change

Today we released research which reduces the range of uncertainty in future global warming. It does not alter the fact we will never be certain about how, exactly, the climate will change. We always have…
Australians generally accept that the climate is changing, but we have lost confidence in politicians, experts, and the media to guide us in what to do about it. Australians generally accept that the climate is changing, but we have lost confidence in politicians, experts, and the media to guide us in what to do about it. Flickr/spodzone

Reading the Climate of the Nation 2012

Over the past several decades, scientists have studied the climate of the world and how that is changing. These studies have built on the recognition, made over 150 years ago by John Tindall, that certain…
Tree rings from around the time of Christ suggest warmer regional temperatures than those between the 1950s to the 1980s, but this does not imply higher mean global temperatures. Tree rings from around the time of Christ suggest warmer regional temperatures than those between the 1950s to the 1980s, but this does not imply higher mean global temperatures. Flickr/Petrified Forest Ranger

On tree rings, CO2 levels and the Pliocene

A study of tree-ring data recently found that in some regions temperatures during Roman times (21AD to 50AD) were 1.05 degrees Celsius higher than the 1951-1980 mean. The paper’s lead author, Professor…
Behind the times: Europe already had carbon taxes in 1992 back when Vanilla Ice topped the Australian charts. Behind the times: Europe already had carbon taxes in 1992 back when Vanilla Ice topped the Australian charts. AAP/Musicbiz

Start a carbon tax? That’s so 1991. Clean innovation and partnerships is where it’s at

We price carbon. This is nothing new. The first time this explicitly happened, Vanilla Ice hit number one in Australia, and Bryan Adams was topping the global charts with “(Everything I do) I do it for…
This is carbon. The carbon you keep hearing about on the news is probably carbon dioxide. It doesn’t look like this. 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…
Courageous dissent? “The MTC is patting itself on the back for staging The Heretic. But the MTC is not being bold … it is being cowardly.” Courageous dissent? “The MTC is patting itself on the back for staging The Heretic. But the MTC is not being bold … it is being cowardly.” Flickr/Carlton Browne

Heretic: Melbourne Theatre Company runs with the goons

Who would have thought the Melbourne Theatre Company would get into bed with Andrew Bolt? The MTC’s new play The Heretic, which premieres on 17 May, tells the story of climate scientist Dr Diane Cassell…
Humanity’s control of fire has led to a vastly changed atmosphere. Humanity’s control of fire has led to a vastly changed atmosphere. Jason A Samfield

The discovery of fire: initial steps toward anthropogenic climate change

The evidence for a rapid shift in state of the terrestrial atmosphere-ocean system over the last two centuries (see figure 1) requires a deep time perspective, beyond events of the day. Tracing the original…

Research and News (2)

Research Briefs (7)