Understanding Climate Risk

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Archive for the ‘Agriculture’ Category

Global warming breaks link between SAM and ENSO

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Global warming has caused SAM and ENSO to divorce according to Guojian Wang and Wenju Cai, published in Nature Science Reports on June 20. This is having major impacts on Australia and has contributed to the warm and dry conditions over the southern part of the continent since the late 1960s.

SAM is the Southern Annular Mode surrounding Antarctica, a band of wind and water that distributes hot, high pressure and cold, low pressure lobes around the Southern Ocean. This transfers atmospheric mass (pressure) between the mid and high latitudes. The positive phase is highly correlated with a positive phase of ENSO (the El Niño-Southern Oscillation), La Niña. A positive phase of SAM forces westerlies further south in autumn-winter, but in summer allows the easterly trades greater access, bringing in more moisture from the tropics and enhancing La Niña summer rainfall.

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Rethinking rural research in Australia

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This is an excellent article by Andrew Campbell on The Conversation, republished here under a Creative Commons licence.

Rethinking rural research in Australia

By Andrew Campbell, Charles Darwin University

Rural research is vital. It is about 10% of our national innovation system. Annual investment exceeds $1 billion, according to the Rural Research and Development Council. The rural sector and farm-dependent economy accounts for 12% of GDP, 14% of exports, 17% of employment, 60% of the land mass and between half and two-thirds of total water use. (Mining accounts for 9% of GDP, 35% of exports and 2.2% of employment.)

A vibrant, world-leading rural, environmental and agricultural research sector is more strategically important for Australia now than ever. This is clear from authoritative reviews on climate change, biosecurity, drought policy, biodiversity conservation, food security and energy-water-carbon intersections. The Australian Government has also received the Productivity Commission Inquiry into Rural R&D Corporations and the Rural Research and Development Council’s National Strategic Rural R&D Investment Plan.

All these reviews and reports say we need more and better rural research, development and in some cases extension. Read the rest of this entry »

Written by Roger Jones

September 3, 2012 at 11:29 am