Projected changes in US rainfall erosivity

Biasutti, Michela; Seager, Richard

doi:10.5194/hess-19-2945-2015

Cited by 36 publications

(15 citation statements)

References 43 publications

(51 reference statements)

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“…Rainfall Erosivity. Climate change models consistently project an increase in the frequency and intensity of high intensity rainfall events for the western United States (figure 4) (Easterling et al 2017), and thus erosivity (Nearing 2001;Zhang et al 2012;Biasutti and Seager 2015;Nearing et al 2017). Rainfall erosivity is defined as the capability of rainfall to cause soil loss by water and is a function of the energy of rainfall and rainfall intensity (Nearing et al 2017).…”

Section: Journal Of Soil and Water Conservationmentioning

confidence: 99%

Climate change impacts on wind and water erosion on US rangelands

Edwards¹,

Webb²,

Brown³

et al. 2019

Journal of Soil and Water Conservation

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Soil erosion by water and wind in US rangelands has serious implications for rangeland health and food security and poses significant hazards to human health and communities. Accordingly, understanding how future climate change may impact soil erosion is critical for developing appropriate management strategies that mitigate negative impacts to the extent practical and potentially build resilience. Here, we review potential impacts of climate change on controls of erosion in US rangelands and discuss potential erosion responses. Projected climate changes are expected to have regionally variable effects on important controls of erosion, especially vegetation cover; community composition; frequency, magnitude, and geographical range of fire disturbance; and high intensity, erosive weather events, all of which have the potential to increase rangeland vulnerability to erosion. We identify knowledge gaps relevant to these controls and discuss management considerations to address climate change impacts to soil erosion concerns for US rangelands. In order to improve resilience and the efficacy of climate change adaptation, we recommend that existing monitoring data be used to create assessments of vulnerability, that soil erosion should be explicitly included in management benchmarks and decision support tools, and that no-regrets management options be implemented in anticipation of future impacts.

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Section: Journal Of Soil and Water Conservationmentioning

confidence: 99%

Climate change impacts on wind and water erosion on US rangelands

Edwards¹,

Webb²,

Brown³

et al. 2019

Journal of Soil and Water Conservation

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“…Soil erosion has generated environmental, social and economic damage worldwide 1 . Recent studies indicate that the world’s food production needs to increase by 60% to 110% to meet global demand growth 2 , 3 and that soil erosion will increase in 21 st century due to climate change 4 – 6 .…”

Section: Introductionmentioning

confidence: 99%

Projected climate change impacts in rainfall erosivity over Brazil

Almagro

Oliveira

Nearing

et al. 2017

Sci Rep

133

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The impacts of climate change on soil erosion may bring serious economic, social and environmental problems. However, few studies have investigated these impacts on continental scales. Here we assessed the influence of climate change on rainfall erosivity across Brazil. We used observed rainfall data and downscaled climate model output based on Hadley Center Global Environment Model version 2 (HadGEM2-ES) and Model for Interdisciplinary Research On Climate version 5 (MIROC5), forced by Representative Concentration Pathway 4.5 and 8.5, to estimate and map rainfall erosivity and its projected changes across Brazil. We estimated mean values of 10,437 mm ha−1 h−1 year−1 for observed data (1980–2013) and 10,089 MJ mm ha−1 h−1 year−1 and 10,585 MJ mm ha−1 h−1 year−1 for HadGEM2-ES and MIROC5, respectively (1961–2005). Our analysis suggests that the most affected regions, with projected rainfall erosivity increases ranging up to 109% in the period 2007–2040, are northeastern and southern Brazil. Future decreases of as much as −71% in the 2071–2099 period were estimated for the southeastern, central and northwestern parts of the country. Our results provide an overview of rainfall erosivity in Brazil that may be useful for planning soil and water conservation, and for promoting water and food security.

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“…Portanto, a utilização de modelos capazes de estimar os valores de erosividade, a partir de dados mais acessíveis, como média mensal ou anual de precipitação, constitui uma importante ferramenta para a tomada de decisão de práticas de conservação do solo e da água (Lee & Heo, 2011;Oliveira et al, 2013). Além disso, o índice também pode servir como indicador de mudanças climáticas e seus potenciais efeitos sobre os processos erosivos (Biasutti & Seager, 2015;Hoomehr et al, 2016).…”

Section: Introductionunclassified

Variabilidade espacial da erosividade das chuvas no Brasil

Trindade

Oliveira

Anache

et al. 2016

Pesq. agropec. bras.

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Resumo: O objetivo deste trabalho foi elaborar um novo mapa de erosividade da chuva para o Brasil, utilizando séries pluviométricas superiores a 20 anos, e analisar a distribuição espacial dos valores de erosividade. Dados de chuvas de 1.521 estações foram aplicados a 75 equações de regressão que relacionam a precipitação média anual (P) e o coeficiente de chuvas (Rc) com o índice de erosividade (EI30). Os valores de erosividade para os locais não amostrados foram obtidos por interpolação, com uso do método de krigagem ordinária. Os índices mais elevados foram observados entre novembro e fevereiro. Os resultados consistem de interpolações que apresentam desempenho satisfatório para a estimativa da distribuição espacial da erosividade média anual das chuvas e do EI30, ao longo dos meses do ano. Assim, estes mapas podem auxiliar no planejamento da conservação do solo e da água, a partir do delineamento das regiões e das épocas do ano mais críticas quanto à erosividade da chuva.

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Projected changes in US rainfall erosivity

Cited by 36 publications

References 43 publications

Climate change impacts on wind and water erosion on US rangelands

Climate change impacts on wind and water erosion on US rangelands

Projected climate change impacts in rainfall erosivity over Brazil

Variabilidade espacial da erosividade das chuvas no Brasil

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