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Warming could make El Niño more intense
Posted by Australian Broadcasting Corporation: Anna Salleh on October 15th, 2013
Australian Broadcasting Corporation: El Nino future Global warming is expected to increase the severity of droughts and floods due to El Niño in the tropical Pacific, new Australian research has found.
Dr Scott Power, from the Centre for Australian Weather and Climate Research, and colleagues, report their findings today in the journal Nature.
During El Niño, the ocean surface temperature in the eastern Pacific warms and this leads to droughts in the western tropical Pacific and floods in the eastern part.
This in turn has...
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Rising methane ‘due to mining and wetlands’
Posted by Australian Broadcasting Corporation: Anna Salleh on September 24th, 2013
Australian Broadcasting Corporation: Methane rise A rise in atmospheric methane emissions after 2006 is likely due to expanding wetlands and an increase in emissions from mining of fossil fuels, say researchers.
An international team report their findings today in the journal Nature Geoscience.
"We think that the two reasons - fossil fuels and methane from wetlands - are the best explanations given the data," says Australian author Dr Pep Canadell, from CSIRO Marine and Atmospheric Research.
Methane is a powerful greenhouse...
CO2 helps cancel drying out of grasslands
Posted by Australian Broadcasting Corporation: Anna Salleh on August 5th, 2011
Australian Broadcasting Corporation: Balancing act As the climate changes, warmer temperatures will dry out grasslands but raised CO2 levels will offset this by making plants more efficient at using water, say researchers.
Biogeochemist, Dr Feike Dijkstra, from the University of Sydney, and colleagues report their findings today in the journal Nature.
"We found that when you have elevated CO2 combined with warming, that elevated CO2 completely offsets the drying effect of warming," says Dijkstra.
Rising temperatures are known...