Preprints
https://doi.org/10.5194/egusphere-2022-196
https://doi.org/10.5194/egusphere-2022-196
 
19 Apr 2022
19 Apr 2022

Effects of precipitation seasonality, vegetation cycle, and irrigation on enhanced weathering

Giuseppe Cipolla1, Salvatore Calabrese2, Amilcare Porporato3, and Leonardo Noto1 Giuseppe Cipolla et al.
  • 1Dipartimento di Ingegneria, Università degli Studi di Palermo, Palermo, Italy
  • 2Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX, USA
  • 3Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, USA

Abstract. Enhanced Weathering (EW) is a promising strategy for carbon sequestration, but several open questions remain regarding the actual rates of dissolution in conditions of natural hydroclimatic variability in comparison to laboratory experiments. In this context, models play a pivotal role, as they allow exploring and predicting EW dynamics under different environmental conditions. Here a comprehensive hydro-biogeochemical model has been applied to four cropland case studies (i.e., Sicily and the Padan plain in Italy and California and Iowa in the USA) characterized by different rainfall seasonality, vegetation (i.e., wheat for Sicily and California and corn for Padan plain and Iowa), and soil type to explore their influence on dissolution rates. The results reveal that rainfall seasonality, and irrigation when applied, are crucial in determining EW and carbon sequestration dynamics, given their effect on hydrological fluxes, soil pH, and weathering rate. The carbon sequestration rate was found to be strongly affected also by the pre-EW soil pH, which is one of the main factors controlling soil pH before the olivine amendment. In the analyzed case studies, Iowa and Sicily sequester the greatest amount of CO2 (4.20 and 0.62 kg ha-1 y-1, respectively), as compared to California and the Padan plain (2.21 and 0.39 kg ha-1 y-1, respectively). These low carbon sequestration values suggest that an in-depth analysis at the global scale is required to assess EW efficacy for carbon sequestration.

Journal article(s) based on this preprint

26 Aug 2022
Effects of precipitation seasonality, irrigation, vegetation cycle and soil type on enhanced weathering – modeling of cropland case studies across four sites
Giuseppe Cipolla, Salvatore Calabrese, Amilcare Porporato, and Leonardo V. Noto
Biogeosciences, 19, 3877–3896, https://doi.org/10.5194/bg-19-3877-2022,https://doi.org/10.5194/bg-19-3877-2022, 2022
Short summary

Giuseppe Cipolla et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-196', Anonymous Referee #1, 11 May 2022
    • AC1: 'Reply on RC1', Giuseppe Cipolla, 22 Jun 2022
  • RC2: 'Comment on egusphere-2022-196', Ingrid Smet, 31 May 2022
    • AC2: 'Reply on RC2', Giuseppe Cipolla, 22 Jun 2022

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-196', Anonymous Referee #1, 11 May 2022
    • AC1: 'Reply on RC1', Giuseppe Cipolla, 22 Jun 2022
  • RC2: 'Comment on egusphere-2022-196', Ingrid Smet, 31 May 2022
    • AC2: 'Reply on RC2', Giuseppe Cipolla, 22 Jun 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (24 Jun 2022) by Sara Vicca
AR by Giuseppe Cipolla on behalf of the Authors (28 Jun 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (28 Jun 2022) by Sara Vicca
RR by Anonymous Referee #1 (12 Jul 2022)
RR by Ingrid Smet (22 Jul 2022)
ED: Publish subject to minor revisions (review by editor) (26 Jul 2022) by Sara Vicca
AR by Giuseppe Cipolla on behalf of the Authors (01 Aug 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (01 Aug 2022) by Sara Vicca

Journal article(s) based on this preprint

26 Aug 2022
Effects of precipitation seasonality, irrigation, vegetation cycle and soil type on enhanced weathering – modeling of cropland case studies across four sites
Giuseppe Cipolla, Salvatore Calabrese, Amilcare Porporato, and Leonardo V. Noto
Biogeosciences, 19, 3877–3896, https://doi.org/10.5194/bg-19-3877-2022,https://doi.org/10.5194/bg-19-3877-2022, 2022
Short summary

Giuseppe Cipolla et al.

Giuseppe Cipolla et al.

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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
Enhanced Weathering (EW) is a promising strategy for carbon sequestration. Since models may help to characterize field EW, the present work applies a hydro-biogeochemical model to four case studies characterized by different rainfall seasonality, vegetation, and soil type. Rainfall seasonality strongly affects EW dynamics, but low carbon sequestration suggests that an in-depth analysis at the global scale is required to see if EW may be effective to mitigate climate change.