Grains Research and Development

Date: 05.02.2015

Nuffield paper predicts better weather forecasts

Author: Tristan Price
Robin Schaefer

Newly completed research by a South Australian Nuffield scholar says that weather forecasting has become increasingly accurate in recent years, but farmers should not take predictions literally.

In his paper Weather Forecasting & Business Management Systems, Robin Schaefer, who shares a collaborative farming venture at Loxton, South Australia, says five and seven day forecasts in Australia have increased in accuracy by 45 per cent over the last 30 years, while the three day forecast has increased accuracy by 27 per cent to become 97 per cent accurate.

Mr Schaefer, who undertook his Nuffield scholarship study with support from the Grains Research and Development Corporation (GRDC), says forecasting technology and methods had come a long way with the advent of more sophisticated technology like satellite forecasting, but that they should still be wary of the impact of over-subscribing to forecast data.

“Given the uncertain nature of weather forecasts, the riskiest thing anyone could do is to take a weather forecast literally,” Mr Schaefer said.
“In the media we see stories of farmers who followed a forecast of a drought literally, made a dramatic business decision, such as deciding not to sow any crop at all or totally de-stocking, which proved to be the correct decision and resulted in a dramatic escape from its effects.

“For every one of these stories, there are many more where a dramatic decision proved to be incorrect resulting in huge losses. As weather forecasts continue to become more accurate farmers will begin to increase their reliance on them. However, this could increase the risk to the business, especially when the forecast will inevitably be wrong.”

The paper looks at an array of decision-making tools available to farmers in Australia and beyond, including popular services like Climate Kelpie, and forecasting technology and research overseas. While Australia is said to have seen rapid improvements in recent years, decision-support tools from Canada, New Zealand the United Kingdom, United States of America, among other countries, which he visited as part of his scholarship-supported study tour, offer lessons in how local services could enhance their offerings to farmers.

Mr Schaefer concludes that weather forecasting has plenty more progress to make, both in longer-term, seasonal forecasting, as well as more localised predictions via micrometeorology, to help farmers make the most of decisions informed by weather.

“The weather is an essential part of planning daily operations and in the longer term can mean the difference between a profitable and unprofitable year. As a farmer I am also a weather forecaster, I refer to as much information as possible, from as many sources as I have available, then use this information to influence my decision making,” he said.

“Research needs to be targeted at seasonal forecasting. Investigations for this report have confirmed there is plenty of scope to continue to improve seasonal forecasting. To achieve this, researchers need to think outside the square, to be bold and innovative.

“On the opposite end of the scale to seasonal forecasting is the emerging science of micro meteorology.

“Currently any micrometeorology data that is collected is not normally available to farmers.

“As technology improves, with the advent of on-farm instrumentation and communications systems and satellite-derived, instantly retrievable information, it will become possible to map microclimate variations. This will be at time scales that are useful for input into businesses.”


ENDS

For Interviews
Robin Schaefer, Nuffield scholar
08 8584 6350

Contact
Tristan Price, Porter Novelli 
0400 363 006

Caption: Nuffield scholar Robin Schaefer says a leap in seasonal and localised weather forecasting holds the key to unlocking better decision-making tools for farmers.

GRDC Project Code NUF00009

Region South, North