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atmosphere

Catalogue: Nuffield Scholar Reports
The global recession has reduced northern hemisphere emissions to a greater level than what is legally required so there has been very little need for trades to occur... In the near future we may have a fish industry based in rural Australia operating in a similar way to the poultry industry, based on the premise that algae has unlocked the method of using cereal grains as a feedstock... A farmer may have 20 years of increase in soil carbon followed by 20 years of gradual decline despite using accepted best practises to retain soil carbon...
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Catalogue: GRDC Research Summaries
" Teleconnections between climate drivers and regional climate, and model representation of links.. Project Code: MCV00007.. Weather is influenced by many interconnected systems in the atmosphere, ocean and on land; small changes in one part of the world can impact on the weather in another part - days, weeks and even years later < Keep browsing..
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Catalogue: Ground Cover
The field-based trials will create a micro-atmosphere around plots of crops by raising the level of carbon dioxide (CO 2 ) in the air around the plants to 550 parts per million (ppm) - a level the Intergovernmental Panel on Climate Change expects the atmosphere will exceed this century... The level of CO 2 in the atmosphere is about 380ppm... Professor David McNeil, chair of agricultural science at the University of Tasmania, who established the project with the University of Melbourne's Professor Rob Norton, says it is vital for Australian farmers reliant on producing a premium product to know what to expect from their crops as CO 2 levels rise...
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Catalogue: Ground Cover
Greenhouse gases released into the atmosphere by human industry, such as agriculture, are expected to raise average Australian temperatures by up to 6 degrees over 1990 levels by 2070... While graingrowing emits a relatively low rate of greenhouse gases per hectare, the industry's size means emissions must be monitored... The GRDC has invested in greenhouse-related research and the good news is that the low soil disturbance of popular no-tillage farming systems is lessening the release of greenhouse carbon dioxide into the atmosphere...
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Catalogue: Ground Cover
Rising levels of carbon dioxide (CO 2 ) in our atmosphere will affect almost every aspect of crop production, from nutrition to plant breeding, grain quality and pest and disease threats... The concentration of CO 2 in the atmosphere is just greater than 400 parts per million, and the experiments run by the AGFACE team are exposing crops to concentrations of 550ppm, which is the predicted measure of atmospheric CO 2 by 2050... "We have also found that important micronutrient levels decrease under CO 2 , such as zinc and iron, which could contribute to human malnutrition in areas of the world where access to food is an issue."..
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Catalogue: Ground Cover
Andrew Todd concentrates on a range of water conservation measures to help overcome the decline in rainfall on his family's 4000-hectare property at Dowerin, WA... Dr Blair Trewin from the Bureau of Meteorology's National Climate Centre says for the period 2001-12 rainfall in coastal south-west WA was 15 per cent or more below the 1961-90 period, while wheatbelt rainfall has fallen 10 to 15 per cent over the same period... This has led to a change in global atmospheric circulation, including a lessening of the subtropical jetstream and a decline in winter storm tracks over the south-west of WA (broadly, the region from Northampton north of Perth to east of Esperance)...
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Catalogue: Ground Cover
Mr Schaefer sees the future including more targeted forecasting for growers through micrometeorology, the use of private providers (already common in the US and the UK), improved radars and a better understanding of climate variability... At the moment any micrometeorology data collected is not normally available to growers, but as technology improves Mr Schaefer hopes this will change, improving understanding of crop performance and crop protection... Mr Ring uses astrometeorology - the theoretical effect of astronomical bodies and forces on Earth's atmosphere - a forecasting system that dates back to 3000 BCE. "I went in quite sceptical but he got me thinking," Mr Schaefer says...
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Catalogue: Ground Cover
Improvements in weather forecasting mean three-day forecasts are now 97 per cent accurate.. Mr Schaefer sees the future including more targeted forecasting for growers through micrometeorology, the use of private providers (already common in the US and the UK), improved radars and a better understanding of climate variability... Mr Ring uses astrometeorology - the theoretical effect of astronomical bodies and forces on Earth's atmosphere - a forecasting system that dates back to 3000 BCE. "I went in quite sceptical but he got me thinking," Mr Schaefer says...
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