Raoul Collenteur
@rcollenteur.bsky.social
Hydrologist at BAFU and Collenteur HydroConsult. Groundwater Hydrologist and Python Enthusiast. Pastas / Phydrus / PyEt Developer.
Reposted by Raoul Collenteur
Too often, I see people talk about a replication as if the first study has established something, and the replication study is a double-check. What people often fail to understand is that we do not do replication studies to *check* a finding, but to *establish* a finding. 1/x
August 17, 2025 at 6:36 AM
Too often, I see people talk about a replication as if the first study has established something, and the replication study is a double-check. What people often fail to understand is that we do not do replication studies to *check* a finding, but to *establish* a finding. 1/x
Reposted by Raoul Collenteur
Hydrology Paper of the Day @hydrologywsl.bsky.social on drought phenomena in Switzerland: drought in the Alps and an understanding of return intervals; SPEI mapping of drought intensity; comparison of drought scenarios; and how a national drought early warning system will assist drought management.
Die Geschichte dazu hier:
Zappa, M., Karger, D. N., & Hüsler, F. (2025). EXtreme Trockenheit in der Schweiz: Regionale und lokale Perspektiven einer globalen Herausforderung. In A. Björnsen (Ed.), WSL Berichte: Vol. 164. Extremes (pp. 13-21). doi.org/10.55419/wsl...
Zappa, M., Karger, D. N., & Hüsler, F. (2025). EXtreme Trockenheit in der Schweiz: Regionale und lokale Perspektiven einer globalen Herausforderung. In A. Björnsen (Ed.), WSL Berichte: Vol. 164. Extremes (pp. 13-21). doi.org/10.55419/wsl...
EXtreme Trockenheit in der Schweiz: Regionale und lokale Perspektiven einer globalen Herausforderung | DORA WSL
doi.org
May 21, 2025 at 2:44 AM
Hydrology Paper of the Day @hydrologywsl.bsky.social on drought phenomena in Switzerland: drought in the Alps and an understanding of return intervals; SPEI mapping of drought intensity; comparison of drought scenarios; and how a national drought early warning system will assist drought management.
Reposted by Raoul Collenteur
💧 Discover more about how the MaLeFiX project is working to anticipate & #mitigate the impacts of drought-related #extremes – helping Switzerland to achieve a more resilient, and less uncertain, future. 👇
🔗 www.wsl.ch/en/projects/...
#ClimateChange #Water #Biodiversity
🔗 www.wsl.ch/en/projects/...
#ClimateChange #Water #Biodiversity
Machine-Learning-Aided Forecasting of Drought-Related Extremes (MaLeFiX)
Climate change exacerbates drought-related extremes, with significant ecological, economic, and human health impacts. MaLeFiX project is developing an interdisciplinary platform that will provide comp...
www.wsl.ch
May 19, 2025 at 8:24 AM
💧 Discover more about how the MaLeFiX project is working to anticipate & #mitigate the impacts of drought-related #extremes – helping Switzerland to achieve a more resilient, and less uncertain, future. 👇
🔗 www.wsl.ch/en/projects/...
#ClimateChange #Water #Biodiversity
🔗 www.wsl.ch/en/projects/...
#ClimateChange #Water #Biodiversity
A story of how science is helping the public, what started as a scientific endeavor is now providing Switzerland with real-time information and forecasts about droughts. #hydrology #drought.
Die Geschichte dazu hier:
Zappa, M., Karger, D. N., & Hüsler, F. (2025). EXtreme Trockenheit in der Schweiz: Regionale und lokale Perspektiven einer globalen Herausforderung. In A. Björnsen (Ed.), WSL Berichte: Vol. 164. Extremes (pp. 13-21). doi.org/10.55419/wsl...
Zappa, M., Karger, D. N., & Hüsler, F. (2025). EXtreme Trockenheit in der Schweiz: Regionale und lokale Perspektiven einer globalen Herausforderung. In A. Björnsen (Ed.), WSL Berichte: Vol. 164. Extremes (pp. 13-21). doi.org/10.55419/wsl...
EXtreme Trockenheit in der Schweiz: Regionale und lokale Perspektiven einer globalen Herausforderung | DORA WSL
doi.org
May 8, 2025 at 10:40 AM
A story of how science is helping the public, what started as a scientific endeavor is now providing Switzerland with real-time information and forecasts about droughts. #hydrology #drought.
Reposted by Raoul Collenteur
8. Mai 2025 11:00
drought.ch ist nun vollständig umgesetzt.
2010: Beginn der Forschungsarbeiten
2013: Forschungsplattform geht Online
Mai 2022: Der Bund will vor #Trockenheit warnen
Mai 2025: Der Bund warnt vor Trockenheit
auf drought.ch werdet ihr nun auf die Seite des Bundes umgeleitet.
drought.ch ist nun vollständig umgesetzt.
2010: Beginn der Forschungsarbeiten
2013: Forschungsplattform geht Online
Mai 2022: Der Bund will vor #Trockenheit warnen
Mai 2025: Der Bund warnt vor Trockenheit
auf drought.ch werdet ihr nun auf die Seite des Bundes umgeleitet.
May 8, 2025 at 9:00 AM
8. Mai 2025 11:00
drought.ch ist nun vollständig umgesetzt.
2010: Beginn der Forschungsarbeiten
2013: Forschungsplattform geht Online
Mai 2022: Der Bund will vor #Trockenheit warnen
Mai 2025: Der Bund warnt vor Trockenheit
auf drought.ch werdet ihr nun auf die Seite des Bundes umgeleitet.
drought.ch ist nun vollständig umgesetzt.
2010: Beginn der Forschungsarbeiten
2013: Forschungsplattform geht Online
Mai 2022: Der Bund will vor #Trockenheit warnen
Mai 2025: Der Bund warnt vor Trockenheit
auf drought.ch werdet ihr nun auf die Seite des Bundes umgeleitet.
Reposted by Raoul Collenteur
We have built a global dataset of observed groundwater time series combined with lots of relevant Earth system variables. Check out Annemarie's poster this morning at #EGU25 A.59 and ask her about all the effort that went into data cleaning!
meetingorganizer.copernicus.org/EGU25/EGU25-...
meetingorganizer.copernicus.org/EGU25/EGU25-...
April 30, 2025 at 7:00 AM
We have built a global dataset of observed groundwater time series combined with lots of relevant Earth system variables. Check out Annemarie's poster this morning at #EGU25 A.59 and ask her about all the effort that went into data cleaning!
meetingorganizer.copernicus.org/EGU25/EGU25-...
meetingorganizer.copernicus.org/EGU25/EGU25-...
In our recent paper, we introduce the new #Pastas groundwater signatures module to characterize the behavior observed in groundwater level time series. This concept is well known in streamflow hydrology, but less in groundwater #hydrology. We describe new opportunities to use in groundwater studies.
April 23, 2025 at 6:12 AM
In our recent paper, we introduce the new #Pastas groundwater signatures module to characterize the behavior observed in groundwater level time series. This concept is well known in streamflow hydrology, but less in groundwater #hydrology. We describe new opportunities to use in groundwater studies.
Reposted by Raoul Collenteur
Auf dem Weg einer nationalen Warnplattform für Trockenheit.
Forschungsprozess und politischer Prozess.
Publikation mit @dirknkarger.bsky.social und Fabia Hüsler (BAFU) aud der @extremeswsl.bsky.social Forum für Wissen @wslresearch.bsky.social
www.dora.lib4ri.ch/wsl/islandor...
Forschungsprozess und politischer Prozess.
Publikation mit @dirknkarger.bsky.social und Fabia Hüsler (BAFU) aud der @extremeswsl.bsky.social Forum für Wissen @wslresearch.bsky.social
www.dora.lib4ri.ch/wsl/islandor...
April 4, 2025 at 8:05 AM
Auf dem Weg einer nationalen Warnplattform für Trockenheit.
Forschungsprozess und politischer Prozess.
Publikation mit @dirknkarger.bsky.social und Fabia Hüsler (BAFU) aud der @extremeswsl.bsky.social Forum für Wissen @wslresearch.bsky.social
www.dora.lib4ri.ch/wsl/islandor...
Forschungsprozess und politischer Prozess.
Publikation mit @dirknkarger.bsky.social und Fabia Hüsler (BAFU) aud der @extremeswsl.bsky.social Forum für Wissen @wslresearch.bsky.social
www.dora.lib4ri.ch/wsl/islandor...
Today's commuter Podcast tip: Project Groundwater on groundwater flood forecasting with Dr. MacKay from the BGS, fun to listen to! open.spotify.com/episode/33jz...
Flood Warning Systems - The Next Generation
Groundwater Rising · Episode
open.spotify.com
March 24, 2025 at 11:38 AM
Today's commuter Podcast tip: Project Groundwater on groundwater flood forecasting with Dr. MacKay from the BGS, fun to listen to! open.spotify.com/episode/33jz...
Interesting ideas to improve reproducibility of scientific studies, I wonder how to ensure that the notebooks will still run in 10, 20, or 30 years time, or if a time limit is required? Even a 10-year guaranteed repro would be a massive step forwards!
We're exploring ways to support scientific reproducibility and sustainability with Binder. What if we could reduce the gap between where researchers conduct their computational analyses using open source technologies and bridge them to publishing platforms for dissemination?
Towards frictionless, portable, and sustainable reproducibility with Binder | 2i2c
Last December I had an opportunity to discuss the current and future state of the open publishing ecosystem at a workshop hosted by HHMI1. While 2i2c doesn’t primarily focus on “publishing”…
2i2c.org
February 19, 2025 at 1:45 PM
Interesting ideas to improve reproducibility of scientific studies, I wonder how to ensure that the notebooks will still run in 10, 20, or 30 years time, or if a time limit is required? Even a 10-year guaranteed repro would be a massive step forwards!
Reposted by Raoul Collenteur
Beautiful visualisation of changes in Swiss temperatures since 1864
www.meteoschweiz.admin.ch/ueber-uns/me...
Graphic by Simon Scherrer
www.meteoschweiz.admin.ch/ueber-uns/me...
Graphic by Simon Scherrer
January 21, 2025 at 8:13 AM
Beautiful visualisation of changes in Swiss temperatures since 1864
www.meteoschweiz.admin.ch/ueber-uns/me...
Graphic by Simon Scherrer
www.meteoschweiz.admin.ch/ueber-uns/me...
Graphic by Simon Scherrer
I wanted to read this promising history article tonight, but I don't have access (seriously!?!). I totally forgot there was this thing called not-open-access 2025. Now I'm sad. 2025, scientific publishing is still broken :(
www.tandfonline.com/doi/full/10....
www.tandfonline.com/doi/full/10....
The force of Forchheimer – the contributions of Philipp Forchheimer to groundwater hydrology
Philipp Forchheimer must be considered one of the most important founding fathers of modern geohydrology. Connected to his name are the Forchheimer law, which describes non-Darcian flow in porous m...
www.tandfonline.com
January 15, 2025 at 10:21 PM
I wanted to read this promising history article tonight, but I don't have access (seriously!?!). I totally forgot there was this thing called not-open-access 2025. Now I'm sad. 2025, scientific publishing is still broken :(
www.tandfonline.com/doi/full/10....
www.tandfonline.com/doi/full/10....
Understanding groundwater droughts using long-term data and time series modelling: www.cambridge.org/core/journal...
Understanding groundwater droughts using detrended historical meteorological data and long-term groundwater modelling | Netherlands Journal of Geosciences | Cambridge Core
Understanding groundwater droughts using detrended historical meteorological data and long-term groundwater modelling - Volume 103
www.cambridge.org
December 7, 2024 at 9:36 AM
Understanding groundwater droughts using long-term data and time series modelling: www.cambridge.org/core/journal...
Interesting assessment of the quality of some hydrological models. It relates well to my earlier comment on Python packages for hydrology, where quality (and maintenance) is a clear issue that needs to be addressed (which probably equals more funding needed for research software development 😅)
Global impact models are pivotal for science, but how good is the software of these models?
Many models are inaccessible, have sub-optimal code comment density, and must be more modular!
Find out more:
gmd.copernicus.org/articles/17/...
Many models are inaccessible, have sub-optimal code comment density, and must be more modular!
Find out more:
gmd.copernicus.org/articles/17/...
December 5, 2024 at 8:48 AM
Interesting assessment of the quality of some hydrological models. It relates well to my earlier comment on Python packages for hydrology, where quality (and maintenance) is a clear issue that needs to be addressed (which probably equals more funding needed for research software development 😅)
Time to share the updated version of my attempt to list open-source Python packages for hydrology: github.com/raoulcollent... . I automated checking the quality and updates of packages. Quick take-away: many usefull packages available, but long-term maintenance is challenging.
GitHub - raoulcollenteur/Python-Hydrology-Tools: This repository holds a list of open source Python packages interesting to Hydrologists
:droplet: This repository holds a list of open source Python packages interesting to Hydrologists - GitHub - raoulcollenteur/Python-Hydrology-Tools: This repository holds a list of open source Pyt...
github.com
December 2, 2024 at 12:04 PM
Time to share the updated version of my attempt to list open-source Python packages for hydrology: github.com/raoulcollent... . I automated checking the quality and updates of packages. Quick take-away: many usefull packages available, but long-term maintenance is challenging.
New study led by Ainur Kokimova on exploring the use of data-driven models to find important stresses before making a numerical groundwater model: link.springer.com/article/10.1...
Exploring the power of data-driven models for groundwater system conceptualization: a case study of the Grazer Feld Aquifer, Austria - Hydrogeology Journal
Developing a reliable conceptual model is crucial for analyzing groundwater systems. An essential part of the aquifer conceptualization is the identification of the hydrological stresses that control ...
link.springer.com
October 2, 2024 at 7:26 AM
New study led by Ainur Kokimova on exploring the use of data-driven models to find important stresses before making a numerical groundwater model: link.springer.com/article/10.1...
In need to estimate evaporation? Check out PyEt, a Python package that includes ~20 methods, depending on the available input data (T, H, ..). We hope to make it easier to test methods, include uncertainty, & correct for CO2 effects when making CC projections: gmd.copernicus.org/articles/17/...
PyEt v1.3.1: a Python package for the estimation of potential evapotranspiration
Abstract. Evapotranspiration (ET) is a crucial flux of the hydrological water balance, commonly estimated using (semi-)empirical formulas. The estimated flux may strongly depend on the formula used, a...
gmd.copernicus.org
September 25, 2024 at 12:11 PM
In need to estimate evaporation? Check out PyEt, a Python package that includes ~20 methods, depending on the available input data (T, H, ..). We hope to make it easier to test methods, include uncertainty, & correct for CO2 effects when making CC projections: gmd.copernicus.org/articles/17/...
Reposted by Raoul Collenteur
Hydrology Paper of the Day
@hiddenhydrology
on urban surfing: where civil engineering intersects with surface water sports; a geography of locations involving rivers, canals, and civil engineering structures; wave pool design; and the story of waterways in historical context.
@hiddenhydrology
on urban surfing: where civil engineering intersects with surface water sports; a geography of locations involving rivers, canals, and civil engineering structures; wave pool design; and the story of waterways in historical context.
Urban Surfing
Unique ideas for activating waterways
hiddenhydrology.substack.com
August 19, 2024 at 1:31 AM
Hydrology Paper of the Day
@hiddenhydrology
on urban surfing: where civil engineering intersects with surface water sports; a geography of locations involving rivers, canals, and civil engineering structures; wave pool design; and the story of waterways in historical context.
@hiddenhydrology
on urban surfing: where civil engineering intersects with surface water sports; a geography of locations involving rivers, canals, and civil engineering structures; wave pool design; and the story of waterways in historical context.
Reposted by Raoul Collenteur
Join us!
#Postdoc #position in #Groundwater #Ecology, Biogeography & #Biodiversity @ Uni Zurich/Eawag (2 yrs)
Analysing genetic, functional & organismal diversity of groundwater #amphipods (Amphiwell.CH), building on extensive dataset & own field/lab work
apply:
apply.refline.ch/673277/1173/...
#Postdoc #position in #Groundwater #Ecology, Biogeography & #Biodiversity @ Uni Zurich/Eawag (2 yrs)
Analysing genetic, functional & organismal diversity of groundwater #amphipods (Amphiwell.CH), building on extensive dataset & own field/lab work
apply:
apply.refline.ch/673277/1173/...
May 29, 2024 at 7:28 AM
Join us!
#Postdoc #position in #Groundwater #Ecology, Biogeography & #Biodiversity @ Uni Zurich/Eawag (2 yrs)
Analysing genetic, functional & organismal diversity of groundwater #amphipods (Amphiwell.CH), building on extensive dataset & own field/lab work
apply:
apply.refline.ch/673277/1173/...
#Postdoc #position in #Groundwater #Ecology, Biogeography & #Biodiversity @ Uni Zurich/Eawag (2 yrs)
Analysing genetic, functional & organismal diversity of groundwater #amphipods (Amphiwell.CH), building on extensive dataset & own field/lab work
apply:
apply.refline.ch/673277/1173/...
Looking for a model to simulate hydraulic head time series? Checkout the results of the 2022 groundwater modeling challenge in our new preprint in HESS! hess.copernicus.org/preprints/he...
#Hydrology
#Hydrology
Data-driven modeling of hydraulic head time series: results and lessons learned from the 2022 groundwater modeling challenge
Abstract. This paper presents the results of the 2022 groundwater time series modeling challenge, where 15 teams from different institutes applied various data-driven models to simulate hydraulic head...
hess.copernicus.org
May 14, 2024 at 5:25 AM
Looking for a model to simulate hydraulic head time series? Checkout the results of the 2022 groundwater modeling challenge in our new preprint in HESS! hess.copernicus.org/preprints/he...
#Hydrology
#Hydrology
Happy to share and receive feedback on this preprint in GMD about our Python package to estimate pot. evaporation with ~20 different methods: gmd.copernicus.org/preprints/gm...
April 15, 2024 at 7:35 AM
Happy to share and receive feedback on this preprint in GMD about our Python package to estimate pot. evaporation with ~20 different methods: gmd.copernicus.org/preprints/gm...
Anyone wants to do some MSc. thesis work on modelling this data with Pastas?! Very exciting dataset to try and analyze using time series models I think! I'd be happy to co-supervise!
Hydrology Paper of the Day @ChungYi_Lin @LandonMarston on a complete and all-inclusive dataset of groundwater well records from the United States: 14.2 million records in tabular and geospatial formats; validation and data lineage; and standardization of terminology and records.
rdcu.be/dD2AH
rdcu.be/dD2AH
April 8, 2024 at 12:36 PM
Anyone wants to do some MSc. thesis work on modelling this data with Pastas?! Very exciting dataset to try and analyze using time series models I think! I'd be happy to co-supervise!
Excited to share this paper led my Martin Vonk that was 3 years in the making. Designing new models is cool, but showing that they work through extensive benchmarking and represent physical systems well is perhaps more important. #hydrology #groundwater
ngwa.onlinelibrary.wiley.com/doi/epdf/10....
ngwa.onlinelibrary.wiley.com/doi/epdf/10....
April 6, 2024 at 4:18 PM
Excited to share this paper led my Martin Vonk that was 3 years in the making. Designing new models is cool, but showing that they work through extensive benchmarking and represent physical systems well is perhaps more important. #hydrology #groundwater
ngwa.onlinelibrary.wiley.com/doi/epdf/10....
ngwa.onlinelibrary.wiley.com/doi/epdf/10....
We just released PyET 1.3.1 ! Large update with many fixes and Xarray support. Need to estimate potential #evaporation? Check it out! #hydrology #python #open-source
March 15, 2024 at 2:55 PM
We just released PyET 1.3.1 ! Large update with many fixes and Xarray support. Need to estimate potential #evaporation? Check it out! #hydrology #python #open-source
Happy to share that we'll be giving a Pastas workshop in Princeton (USA) right after MODFLOW and MORE the 6th of June! Come and join us :) igwmc.princeton.edu/modflow/cour...
February 23, 2024 at 4:41 PM
Happy to share that we'll be giving a Pastas workshop in Princeton (USA) right after MODFLOW and MORE the 6th of June! Come and join us :) igwmc.princeton.edu/modflow/cour...