AI Article Synopsis

  • A recent rainfall erosivity map has been published, but it contains significant biases, including potential underestimation of rain erosivity due to inadequate temporal data resolution.
  • The map also fails to account for varying time periods across different countries, which can drastically affect the erosivity values by more than 50%.
  • Additionally, using precipitation data instead of actual rain data leads to overestimations in areas with heavy snowfall, and the lack of seasonal erosivity distribution limits its utility for erosion prediction. It's advised to use national erosivity maps instead, which are available for many European countries, until these issues are resolved.

Article Abstract

Recently a rainfall erosivity map has been published. We show that the values of this map contain considerable bias because (i) the temporal resolution of the rain data was insufficient, which likely underestimates rain erosivity by about 20%, (ii) no attempt had been included to account for the different time periods that were used for different countries, which can modify rain erosivity by more than 50%, (iii) and likely precipitation data had been used instead of rain data and thus rain erosivity is overestimated in areas with significant snowfall. Furthermore, the seasonal distribution of rain erosivity is not provided, which does not allow using the erosivity map for erosion prediction in many cases. Although a rain erosivity map for Europe would be highly desirable, we recommend using the national erosivity maps until these problems have been solved. Such maps are available for many European countries.

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Source
http://dx.doi.org/10.1016/j.scitotenv.2015.05.019DOI Listing

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