Pau Wiersma

PhD student (doctoral assistant) since 01.04.2021


In my PhD, I will use hydrological modeling to study the long-term effects of climate change on the hydrology of mountainous areas. The novelty of my research lies in the use of snow cover maps derived from synthetically generated remote sensing imagery of unobserved periods, such as in the past up until 1950 or in the future. Ideally, the vast increase in available snow cover maps will lead to better informed hydrological models, which in turn will increase our understanding on the effects of climate change on the hydrological cycle. If successful, this technique of synthesizing remote sensing imagery could be applied to other areas of geoscience as well.

Educational background

  • 09.2018-02.2021: MSc Environmental Engineering, TU Delft, The Netherlands
    • Thesis title: Evaluation of global glacio-hydrological model coupling for runoff prediction: PCR-GLOBWB and GloGEM (repository)
  • 03.2018-07.2018: Chinese Language and Culture, Zhejiang University, PRC
  • 09.2016-02.2017: Minor Environmental Engineering, Tsinghua University, PRC
  • 09.2014-07.2017: BSc Civil Engineering, TU Delft, The Netherlands


  • Wiersma, P., Aerts, J., Zekollari, H., Hrachowitz, M., Drost, N., Huss, M., Sutanudjaja, E. H., and Hut, R.: Coupling a global glacier model to a global hydrological model prevents underestimation of glacier runoff, Hydrol. Earth Syst. Sci., 26, 5971–5986,, 2022


  • vEGU21: Pau Wiersma, Rolf Hut, Jerom Aerts, Niels Drost, Harry Zekollari, and Markus Hrachowitz. Global glacio-hydrological model coupling for streamflow prediction (abstract)
  • IAHS 2022: Wiersma, P., Zakeri, F., and Mariéthoz, G.: The value of synthetic high-resolution daily snow cover maps for long-term hydrological modeling, IAHS-AISH Scientific Assembly 2022, Montpellier, France, 29 May–3 Jun 2022, IAHS2022-535,, 2022.


Dutch (native)
Catalan (native)
English (fluent), CPE C2 2014
Spanish (fluent), DELE B2 2014
French (fluent)
Italian (semi-fluent), CILS B2 2019
Mandarin Chinese (intermediate), HSK5 2018


Institute of Earth Surface Dynamics (IDYST),
UNIL-Mouline, Geopolis, bureau 3247
University of Lausanne
1015 Lausanne, Switzerland