How ocean circulation changed atmospheric CO2

Scientists have struggled for the past few decades to understand why air temperatures around Antarctica over the past one million years were almost perfectly in synch with atmospheric CO2 concentrations. Both dipped down during glacial ice ages and back up again during warm interglacials. By contrast, temperature in the tropics and …

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Researchers reveal when global warming first appeared

The indications of climate change are all around us today but now researchers have revealed for the first time when and where the first clear signs of global warming appeared in the temperature record and where those signals are likely to be clearly seen in extreme rainfall events in the …

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Why experts refuse to debate climate

Prof Steve Sherwood’s editorial republished below, appeared in The Australian on Friday, October 28. It explains why climate scientists are avoiding debates in public forums with skeptics and discusses why the scientific peer review process is the best way to deal with questions around climate change.   Many climate scientists now refuse to take …

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Australia’s frosty days are changing

Spring frosts can have devastating impacts on crop yields in southern Australia, depending on when they occur during the different stages of plant growth. In a recent study, we investigated trends in the frequency of frosts over two periods, from 1940-2011 and from 1981-2011 at long-term high-quality temperature observing stations in …

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Climate scientists confirm elusive tropospheric hot spot

Picture (left): NASA high altitude research balloon. NASA images Researchers have published results in Environmental Research Letters confirming strong warming in the upper troposphere, known colloquially as the tropospheric hotspot. The hot has been long expected as part of global warming theory and appears in many global climate models. The inability to detect this …

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Solution to corrosive ocean mystery reveals our future climate

   Around 55 million years ago, an abrupt global warming event triggered a highly corrosive deep-water current to flow through the North Atlantic Ocean.  The origin of this corrosive water has puzzled scientists for a decade. Now, researchers have discovered this current and how it formed. The findings, published today …

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Warm oceans caused hottest Dust Bowl years

 Dr Markus Donat explains his findings. Picture left: Dust storm approaching Stratford, Texas. NOAA George E Marsh Album. Two ocean hot spots have been found to be the potential drivers of the hottest summers on record for the Central US in 1934 and 1936. The new research may also help modern forecasters predict …

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Biography of Ariaan Purich

Ariaan Purich PhD Student Oceans and Atmosphere Flagship, CSIRO Climate Change Research Centre, UNSW Email: Supervisors: Dr Wenju Cai, Professor Matthew England   Thesis Title Global atmospheric and oceanic influences on changes in Southern Hemisphere extratropical climate Biography Ariaan started her PhD at CSIRO/UNSW in 2014. She is looking into the observed …

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Graduate opportunities expressions of interest

Our Graduate Program has now transitioned to the ARC Centre for Excellence for Climate Extremes. If you are interested in graduate opportunites with us, please visit our new website. This expression of interest will be used to assess if you have the background suitable to undertake graduate studies in climate science, …

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