Title: Global rainfall erosivity assessment based on high-temporal resolution rainfall records
Authors: PANAGOS PANAGIOTISBORRELLI PASQUALEMEUSBURGER KATRINYU BOFUKLIK ANDREASJAE LIM KYOUNGYANG J.NI JINRENMIAO CHIYUANCHATTOPADHYAY NABANSUSADEGHI SEYED HAMIDREZAHAZBAVI ZEINABZABIHI MOHSENLARIONOV GENNADY AKRASNOV SERGEY FGOROBETS ANDREY V.LEVI YOAVERPUL GUNAYBIRKEL CHRISTIANHOYOS NATALIANAIPAL VICTORIAOLIVEIRA PAULO TARSOBONILLA CARLOSMEDDI MOHAMEDNEL WERNERAL DASHTI HASSANBONI MARTINODIODATO NAZARENOVAN OOST K.NEARING MARKBALLABIO CRISTIANO
Citation: SCIENTIFIC REPORTS vol. 7 no. 1 p. 4175
Publisher: NATURE PUBLISHING GROUP
Publication Year: 2017
JRC N°: JRC104841
ISSN: 2045-2322
URI: https://www.nature.com/articles/s41598-017-04282-8
http://publications.jrc.ec.europa.eu/repository/handle/JRC104841
DOI: 10.1038/s41598-017-04282-8
Type: Articles in periodicals and books
Abstract: The exposure of the Earth’s surface to the energetic input of rainfall is one of the key factors controlling water erosion. While water erosion is identified as the most serious cause of soil degradation globally, global patterns of rainfall erosivity remain poorly quantified and estimates are typically associated with large uncertainties. This hampers the implementation of effective soil degradation mitigation and restoration strategies. Quantifying rainfall erosivity is challenging as it requires high temporal resolution (<30min) and high fidelity rainfall recordings over long periods of time (>10 years). Here, we present the results of an extensive global data collection effort whereby we estimated rainfall erosivity for 3,625 stations covering 63 countries. This first ever Global Rainfall Erosivity Database was used to develop a global erosivity map at 30 arc-seconds (~1 km) based on a Gaussian Process Regression (GPR). Globally, the mean rainfall erosivity was estimated to be 2,190 MJ mm ha-1 h-1 yr-1, with the highest values (>5,200 MJ mm ha-1 h-1 yr-1) in major parts of South America and the Caribbean countries, Central east Africa and South east Asia. The lowest values (< 200 MJ mm ha-1 h-1 yr-1) are mainly found in Canada, the Russian Federation, Northern Europe, Northern Africa and the Middle East. The tropical climate zone has by far the highest mean rainfall erosivity (7,104 MJ mm ha-1 h-1 yr-1) followed by the temperate (3,729 MJ mm ha-1 h-1 yr-1), whereas the lowest mean (493 MJ mm ha-1 h-1 yr-1) was estimated in the cold climate zone.
JRC Directorate:Sustainable Resources

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