Assessment of the water and energy budget in a peatland catchment of the Alps using the process based GEOtop hydrological model

J. W.M. Pullens, M. Sottocornola, G. Kiely, D. Gianelle, R. Rigon

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Over the millennia, peatlands have sequestered and stored carbon in the form of peat, that today accounts for around 30% of the global soil organic carbon. The peat has formed and accumulated due to the slow decomposition rate of organic matter in waterlogged, anaerobic conditions. The particularly close interdependence of the carbon and water cycles in peatland ecosystems signal the importance of understanding the water cycle to the functioning of peatlands. With this aim, the water and energy cycle of an alpine catchment in Italy, which includes a peatland, was studied using the process-based hydrological model GEOtop and a set of in situ measurements over 4 years (2012–2015). This is a challenging modelling exercise that has not been tried before with GEOtop. The catchment is heterogenous with land covers of peatland, grassland, scree and bare rock in a mountainous area. The GEOtop model was able to replicate the energy and water fluxes measured by an eddy covariance tower located in the peatland as well as the volumetric water content and soil temperature of the peatland accurately over the four years. This study shows that a process-based hydrological model can be used to study the water and energy dynamics of a peatland in a mountainous area.

Original languageEnglish
Pages (from-to)195-210
Number of pages16
JournalJournal of Hydrology
Volume563
DOIs
Publication statusPublished - Aug 2018

Keywords

  • Alps
  • Energy balance
  • GEOtop
  • Hydrology
  • Peatland
  • Water balance

Fingerprint

Dive into the research topics of 'Assessment of the water and energy budget in a peatland catchment of the Alps using the process based GEOtop hydrological model'. Together they form a unique fingerprint.

Cite this