The analysis of limited climatic data with reference to wind erosion risk in semi-arid to arid regions

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Abstract

Climatic data are frequently limited in semi-arid to arid regions. A method is proposed for presenting these data so that a qualitative assessment can be made at any site. The use of regression analysis and reciprocal distance squared for obtaining estimates of data were investigated. Pattern analysis was used to define zones of similar climatic characteristics.

As a specific example, the climatic elements influencing wind erosion in the semi-arid to arid region of New South Wales have been investigated. Wind erosion is the main form of erosion in this region. For selected centres, seasonal aridity and erosive wind force indices were derived. These were combined to give erosion indices for each centre. On the basis of their aridity and erosion indices, these centres were classified into zones.

The advantages of using this method of classification are simplicity of presentation and ease of interpretation.

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