Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 3.480
IF3.480
IF 5-year value: 4.194
IF 5-year
4.194
CiteScore value: 6.7
CiteScore
6.7
SNIP value: 1.143
SNIP1.143
IPP value: 3.65
IPP3.65
SJR value: 1.761
SJR1.761
Scimago H <br class='widget-line-break'>index value: 118
Scimago H
index
118
h5-index value: 60
h5-index60
Preprints
https://doi.org/10.5194/bg-2019-464
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-2019-464
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  27 Mar 2020

27 Mar 2020

Review status
This discussion paper is a preprint. It has been under review for the journal Biogeosciences (BG). The manuscript was not accepted for further review after discussion.

Improved parameterization of the weathering kinetics module in the PROFILE and ForSAFE models

Harald Ulrik Sverdrup1,8, Eric H. Oelkers2,3, Martin Erlandsson Lampa4, Salim Belyazid5, Daniel Kurz6, and Cecilia Akselsson7 Harald Ulrik Sverdrup et al.
  • 1System Dynamics, Department of Gamification, Inland Norway University of Applied Sciences, NO-2318, Hamar, Norway
  • 2Earth Sciences, University College London, WC1E 6BT, London, UK
  • 3CNRS, UMR-5563, Toulouse, France
  • 4Institute of Hydrology, University of Uppsala, SE-751 05 Uppsala, Sweden
  • 5Physical Geography, Stockholm University, SE-106 91 Stockholm, Sweden
  • 6EKG Geoscience, CH-3012 Bern, Switzerland
  • 7Earth Sciences, University of Lund, SE-221 00 Lund, Sweden
  • 8Industrial Engineering, University of Iceland, IS-107 Reykjavik, Icleand

Abstract. Although the PROFILE and ForSAFE model can accurately reproduce the chemical and mineralogical evolution of the soil unsaturated zone, it overestimates weathering rates in deeper soil layers and in groundwater systems. This overestimation has been corrected by improving the kinetic expression describing mineral dissolution by adding or upgrading braking functions. The base cation and aluminium brakes have been strengthened, and an additional silicate brake has been developed, improving the ability to describe mineral- water reactions in deeper soils. These brakes are developed from a molecular-level model of the dissolution mechanisms. Equations, parameters and constants describing mineral dissolution kinetics have now been obtained for 113 minerals from 12 major structural groups, comprising all types of minerals encountered in most soils. The PROFILE and ForSAFE weathering sub-model was extended to cover two-dimensional catchments, both in the vertical and the horizontal direction, including the hydrology. Comparisons between this improved model and field observations are available in Erlandsson Lampa et al. (2019, This special issue). The results showed that the incorporation of a braking effect of silica concentrations was necessary and helps obtain more accurate descriptions of soil evolution rates at greater depths and within the saturated zone.

Harald Ulrik Sverdrup et al.

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Harald Ulrik Sverdrup et al.

Harald Ulrik Sverdrup et al.

Viewed

Total article views: 221 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
139 77 5 221 5 5
  • HTML: 139
  • PDF: 77
  • XML: 5
  • Total: 221
  • BibTeX: 5
  • EndNote: 5
Views and downloads (calculated since 27 Mar 2020)
Cumulative views and downloads (calculated since 27 Mar 2020)

Viewed (geographical distribution)

Total article views: 178 (including HTML, PDF, and XML) Thereof 173 with geography defined and 5 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 23 Nov 2020
Publications Copernicus
Download
Short summary
Equations, parameters and constants describing mineral dissolution kinetics have now been obtained for 113 minerals from 12 major structural groups, comprising all types of minerals encountered in most soils. The PROFILE and ForSAFE weathering sub-model was extended to cover two-dimensional catchments, both in the vertical and the horizontal direction, including the hydrology.
Equations, parameters and constants describing mineral dissolution kinetics have now been...
Citation
Altmetrics