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Soil structure is an important omission in Earth System Models

Most soil hydraulic information used in Earth System Models (ESMs) is derived from pedo-transfer functions that use easy-to-measure soil attributes to estimate hydraulic parameters. This parameterization relies heavily on soil texture, but overlooks the critical role of soil structure originated by...

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Autores principales: Fatichi, Simone, Or, Dani, Walko, Robert, Vereecken, Harry, Young, Michael H., Ghezzehei, Teamrat A., Hengl, Tomislav, Kollet, Stefan, Agam, Nurit, Avissar, Roni
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6985222/
https://www.ncbi.nlm.nih.gov/pubmed/31988306
http://dx.doi.org/10.1038/s41467-020-14411-z
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author Fatichi, Simone
Or, Dani
Walko, Robert
Vereecken, Harry
Young, Michael H.
Ghezzehei, Teamrat A.
Hengl, Tomislav
Kollet, Stefan
Agam, Nurit
Avissar, Roni
author_facet Fatichi, Simone
Or, Dani
Walko, Robert
Vereecken, Harry
Young, Michael H.
Ghezzehei, Teamrat A.
Hengl, Tomislav
Kollet, Stefan
Agam, Nurit
Avissar, Roni
author_sort Fatichi, Simone
collection PubMed
description Most soil hydraulic information used in Earth System Models (ESMs) is derived from pedo-transfer functions that use easy-to-measure soil attributes to estimate hydraulic parameters. This parameterization relies heavily on soil texture, but overlooks the critical role of soil structure originated by soil biophysical activity. Soil structure omission is pervasive also in sampling and measurement methods used to train pedotransfer functions. Here we show how systematic inclusion of salient soil structural features of biophysical origin affect local and global hydrologic and climatic responses. Locally, including soil structure in models significantly alters infiltration-runoff partitioning and recharge in wet and vegetated regions. Globally, the coarse spatial resolution of ESMs and their inability to simulate intense and short rainfall events mask effects of soil structure on surface fluxes and climate. Results suggest that although soil structure affects local hydrologic response, its implications on global-scale climate remains elusive in current ESMs.
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spelling pubmed-69852222020-01-29 Soil structure is an important omission in Earth System Models Fatichi, Simone Or, Dani Walko, Robert Vereecken, Harry Young, Michael H. Ghezzehei, Teamrat A. Hengl, Tomislav Kollet, Stefan Agam, Nurit Avissar, Roni Nat Commun Article Most soil hydraulic information used in Earth System Models (ESMs) is derived from pedo-transfer functions that use easy-to-measure soil attributes to estimate hydraulic parameters. This parameterization relies heavily on soil texture, but overlooks the critical role of soil structure originated by soil biophysical activity. Soil structure omission is pervasive also in sampling and measurement methods used to train pedotransfer functions. Here we show how systematic inclusion of salient soil structural features of biophysical origin affect local and global hydrologic and climatic responses. Locally, including soil structure in models significantly alters infiltration-runoff partitioning and recharge in wet and vegetated regions. Globally, the coarse spatial resolution of ESMs and their inability to simulate intense and short rainfall events mask effects of soil structure on surface fluxes and climate. Results suggest that although soil structure affects local hydrologic response, its implications on global-scale climate remains elusive in current ESMs. Nature Publishing Group UK 2020-01-27 /pmc/articles/PMC6985222/ /pubmed/31988306 http://dx.doi.org/10.1038/s41467-020-14411-z Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Fatichi, Simone
Or, Dani
Walko, Robert
Vereecken, Harry
Young, Michael H.
Ghezzehei, Teamrat A.
Hengl, Tomislav
Kollet, Stefan
Agam, Nurit
Avissar, Roni
Soil structure is an important omission in Earth System Models
title Soil structure is an important omission in Earth System Models
title_full Soil structure is an important omission in Earth System Models
title_fullStr Soil structure is an important omission in Earth System Models
title_full_unstemmed Soil structure is an important omission in Earth System Models
title_short Soil structure is an important omission in Earth System Models
title_sort soil structure is an important omission in earth system models
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6985222/
https://www.ncbi.nlm.nih.gov/pubmed/31988306
http://dx.doi.org/10.1038/s41467-020-14411-z
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