Particularly in regions, where precipitation is limited to a few months per year only, reliable determination of the onset of the rainy season and the start of the sowing time is of crucial importance to sustainable food production. Especially since the mid-1980s, an increasing delay of onset dates
A system for predicting the onset of the north Australian wet-season
β Scribed by Nicholls, N.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1984
- Weight
- 702 KB
- Volume
- 4
- Category
- Article
- ISSN
- 2314-6214
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β¦ Synopsis
An index is defined for the date of onset of the north Australian wet-season, based on rainfalls observed at ten stations across tropical Australia. The index is shown to be reasonably representative of wet-season onset throughout the area of interest. Some suggestion of bimodality is found in the frequency distribution of onset dates. An operationally feasible method for predicting the probability that the wet-season will commence late is presented, building on earlier published work which has established the feasibility of prediction of seasonal rainfall near the date of onset of the wet. The forecast method uses the linear logistic equation and Darwin pressures observed in months prior to the onset to make predictions. Acceptable forecasts can be issued four months prior to onset. Two examples of the use of the method are provided.
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