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TAS Country : January 6th 2011
Friday, January 7, 2011 Tasmanian Country 3 News Expert cools climate hype KAROLIN MacGREGOR A LEADING researcher has warned that extremely cold conditions in the northern hemisphere and wet weather in many parts of Australia in recent months do not mean that climate change has ended. CSIRO Marine and Atmospheric Research honorary fellow Barrie Hunt says the short term cooling in global temperatures should not be misinter- preted. Despite the severity of the northern winter and the wetter and cooler conditions in large parts of the country, Mr Hunt says 2010 was actually a very warm year globally. ''Recent wet conditions in eastern Australia mainly reflect short term climatic variability and weather events, not longer term climate change trends,'' he said. ''Conclusions that climate is not changing are based on a misunder- standing of the roles of climatic change caused by increasing greenhouse gases and climatic variability due to natural processes in the climatic system.'' Mr Hunt said those two components in the climate system interact continu- ously to either counteract or exacer- bate climate extremes. Simulations show that natural varia- bility produces periods where the climate can be cooler or warmer than usual. Mr Hunt says these variations can last for 10 to 15 years with persistent variations of about 0.2 C ''Such natural variability could ex- plain the above average temperatures observed globally in the 1940s and the warm but relatively constant global temperatures of the last decade,'' he said. Modelling has shown that monthly mean temperatures up to 10C below present values could occur over North America in model simulations, with similar cold spells over Asia, and variations of up to 15C below current temperatures were still found on indi- vidual days even in 2060 despite a long term warming trend. ''These results suggest that severe winters in the northern hemisphere are not sufficient to indicate that climatic change has ceased,'' he said. ''The long-term trends that charac- terise climate change can be inter- preted only by analysing many years of observations.'' Mr Hunt said the increasing concen- tration of greenhouse gases will not show a simple year on year increase in temperatures, however severe winters will become less frequent. Mr Hunt said the last decade had been the warmest in instrumental record. RETAIL THERAPY: Stallholders ready for a re-run at Sheffield market. Local goods the go at revamped market KAROLIN MacGREGOR LOCAL markets are becoming popular events in many of Tasmania's regional communities and organisers are hoping the revamped Sheffield Market will be just the same. The market has been taken on by Waine and Sharon Whitbread after it was wound up several months ago. The Whitbreads who moved down from Sydney for a tree-change five years ago have played an integral role in developing the now highly popular Wilmot Markets. Mr Whitbread said one of the keys was to promote the markets as fun, family-friendly events that have something to offer visitors of all ages. ''The Wilmot markets have really become a meeting place for a lot of the locals to get together and have a nice day out and we also get quite a few of tourists coming as well,'' he said. Mr Whitbread said locally grown produce would be a major focus of the Sheffield markets. ''The fresh fruit and vegetables is something we're really pushing for Sheffield there will be quite a few people selling locally grown produce,'' he said. The first revamped Sheffield market will be held on January 15 at the Town Hall, and there will also be stalls in High St. If it rains, stalls will move indoors. There will also be jams and preserves, locally produced honey, free-range eggs, cakes and craft items available for sale along with clothes and bric a brac. There will be entertainment for children, food and drinks. Mr Whitbread said the markets were often a useful outlet for keen gardeners to sell their excess vegetables and fruit and even start up small sideline business. ''At Wilmot the market really is a highlight of the month for a lot of people and we want to see the same thing happen at Sheffield, so we really want to get the town involved,'' Mr Whitbread said. Mr Whitbread said new stallholders are welcome. The Sheffield markets will be held on the third Saturday of every month. Contact 6492 1302. 20941 Steel prices set to rise mid January! www.ranbuild.com.au Call your local accredited Ranbuild Dealer today: 1300 RANBUILD Beat the Steel Price Rise -- Order Your Shed Now!
December 23rd 2010
January 13th 2011