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

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.

💧 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

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.

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.

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-...

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.

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...

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!

Beautiful visualisation of changes in Swiss temperatures since 1864 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....

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 😅)

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...

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/...

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.

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/...

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

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!

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....

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...

New release of Pastas 1.4.0! Complete overhaul of the groundwater signatures module and Pandas 2.2 support! github.com/pastas/pasta...

Want to do a PhD on the relationship between floods and groundwater? Check out this opportunity at the VU Amsterdam with Wouter Berghuijs! workingat.vu.nl/vacancies/ph...

Help Shuo Zong find wild rivers accross the globe! Play the citizen science game (3-5 minutes) and help conserve wild rivers. (which I hope includes some rivers I want to kayak 😅) lab.citizenscience.ch/en/project/761

Happy to share that we will host a 4-day ETH & EPFL summer school for PhD and MSc students this June (18. - 21.06.) at our "Waldlabor" field site! Apply until April 1st! More information: hyd.ifu.ethz.ch/education/Ec...

Working on open data and software for groundwater? Or have interesting thoughts about it? Why not submit an abstract to our session at the IAH Davos Conference this fall? www.iah2024davos.org#home

Follow @kinarnicholas.bsky.social to be updated on the hydrology paper of the day also on @bsky.app

Need hydrological data for Switzerland, check out CAMELS-CH. Need groundwater data? Wait a few months 😅 (but stay tuned).

#Groundwater is vital to the health of our planet: A call for greater protection 💧 doi.org/10.1111/gcb....

Good news for #Pastas! We received a small grant from the #NWO Open Science Fund to further develop the software with unit tests (Me), Docs (TU Delft), and visualization (Artesia). First time ever receiving public funding for direct development of Pastas.

Our article "Pastas: open source software for the analysis of groundwater time series" got published online in Groundwater! doi.org/10.1111/gwat... #Python #Opensource #Hydrology #Groundwater