HYCLIMM - Hydrology & Climate Impacts Group

🌊 A big thanks to our Repower guides to show us the hydroelectric power plant answer all our questions!

⛰️ We climbed down 332 steps into the ground to see where the water flows from Davos to Klosters, where the Pelton turbines produce energy for the valley.

Snow2HyDro — the propagation of snow to hydrological droughts The project assesses how snow droughts propagate into hydrological droughts in the Alpine Rhine catchment, with the aim of evaluating impacts on water resources management and related adaptation needs...

Raul Wood (@hyclimm.bsky.social) stellt das von der @wslresearch.bsky.social geförderten Projekt #Snow2HyDro vor.

❄️➡️💧 #Schneetrockenheit nimmt an Häufigkeit und Intensität zu – mit Folgen für die #Wasserwirtschaft.

Mehr Infos zum Projekt: www.wsl.ch/en/projects/...

@manuelaibrunner.bsky.social

We warmly welcome our new postdoc researcher Dr. Ahmed Elkouk. He aims to investigate floods under climate change to support the development of sustainable adaptation measures in the Swiss Rhône River. Outside research, he finds peace in reading and quietly watching the flow of a river.

Switch flipped for conditions conducive to #fire: Dry #weather + low #humidity are the main driving forces behind #forestfires, with #temperature playing less of a role. #Wind + a lack of #snow encourage forest fires in #winter.
More: www.slf.ch/en/news/swit...

📷 LFV Südtirol

@hyclimm.bsky.social

📈 HS2.4.5: Hydrological extremes: from droughts to floods www.egu26.eu/session/55988 with @manuelaibrunner.bsky.social
🔄 HS2.4.11: Hydrological response to changing conditions: process understanding and model improvement www.egu26.eu/session/55919 with @gbrunohydro.bsky.social
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🗺️ HS2.4.2: Large-Sample Hydrology: Advancing dataset developments, enhancing process understanding, and unifying insights through catchment modeling www.egu26.eu/session/55910
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🌍 Are you working on #freshwatertemperature, #large-samplehydrology, or #hydrologicalextremes and changes?

#EGU26 #HYCLIMM

🌡️ HS2.3.3: Freshwater Temperatures: From Local to Global Scales www.egu26.eu/session/55888 with @mariagrundmann.bsky.social
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Compounding preconditions of wildfires vary in time and space within Europe - Communications Earth & Environment Wildfire activity in Europe is driven by various compounding conditions, dominated by drought conditions and vapor pressure deficit, according to an integrated analysis of land-surface parameters and ...

🍂 𝗗𝗿𝗼𝘂𝗴𝗵𝘁 𝗰𝗼𝗻𝗱𝗶𝘁𝗶𝗼𝗻𝘀 𝗮𝗻𝗱 𝘃𝗮𝗽𝗼𝗿 𝗽𝗿𝗲𝘀𝘀𝘂𝗿𝗲 𝗱𝗲𝗳𝗶𝗰𝗶𝘁 𝗱𝗿𝗶𝘃𝗲 𝗘𝘂𝗿𝗼𝗽𝗲’𝘀 𝘄𝗶𝗹𝗱𝗳𝗶𝗿𝗲𝘀 🔥

Check out our new study: www.nature.com/articles/s43...

#wildfires #climateextremes #naturalhazards #compoundevents

🌍 More work on this topic will follow soon!

Great thanks to all co-authors: David M. Hannah, Cornelia Twining, and the HYCLIMM members Amber van Hamel, @manuelaibrunner.bsky.social , @mariagrundmann.bsky.social , Corentin Chartier-Rescan, Corinna Frank, and @gbrunohydro.bsky.social !

Riverine heatwaves are an emergent climate change risk - Nature Water Riverine heatwaves have severe consequences for society, the economy and ecosystems and are becoming more frequent with climate change. This Perspective addresses research efforts to better understand...

‼️ Hot off the press in @natwater.nature.com: "Riverine heatwaves are an emergent climate change risk"
We
🐟 (1) highlight the impacts of and unknowns related to riverine heatwaves and
🤔 (2) discuss the research needed to improve our knowledge.

Link to article: www.nature.com/articles/s44...

Riverine heatwaves are an emergent climate change risk - Nature Water Riverine heatwaves have severe consequences for society, the economy and ecosystems and are becoming more frequent with climate change. This Perspective addresses research efforts to better understand...

Our Perspective by Amber van Hamel and colleagues @cchartierrescan.bsky.social @mariagrundmann.bsky.social @manuelaibrunner.bsky.social emphasizes that climate change will worsen riverine heatwaves, demanding better data and models to address them.
www.nature.com/articles/s44...

If you're around #Davos, and curious about #droughts and why studying them in the #mountains, join me at the next Researchers Beer organized by Academia Raetica at the Kulturplatz (Davos Platz) tomorrow 02.12 at 6.30pm.

academiaraetica.ch/en/courses-a...

@slfdavos.bsky.social @hyclimm.bsky.social

⛰️PhD @mariagrundmann.bsky.social explains the goals and challenges of her field research project in this new video by @slfdavos.bsky.social !

Little reminder that at #EGU26 there will be a session on fresh water temperature! 🐠

🕙 Sign up until 15 Jan 26
🚢 apply for travel funding until 1 Dec 25!

See you there! 🏊‍♀️
meetingorganizer.copernicus.org/EGU26/sessio...

Deadline for sign up: 15 January 2026, 13:00 CET
Deadline for travel support application: 1 December 2025
Session HS2.3.3:
meetingorganizer.copernicus.org/EGU26/sessio...
Please share and spread the word!

#egu26 #europeangeosciencesunion #watertemperature

Join our new #EGU26 session on “Freshwater Temperatures: From Local to Global Scales” from 3 to 8 May 2026, on-site in Vienna and virtually!
We ( @manuelaibrunner.bsky.social , Michelle van Vliet, Felipe Saavedra, James White, and myself) invite abstract submissions to our session HS2.3.3!

Are you working with #watertemperatures in freshwater systems?
Are you doing field work, modelling, large-scale analyses, or catchment studies?
Are you studying natural and anthropogenic processes governing fresh water temperatures, and their implications on ecosystems and water resources?
#egu26

We are thrilled to announce that #HYCLIMM member Raul Wood, together with WSL researcher @tobias-wechsler.bsky.social, got their WSL grant Snow2HyDro!

This project focuses on the adaptation needs from water resources, energy, and agriculture in the Alpenrhein.

Stay tuned!🤩

#WSL #SLF

📈 Low flows show mixed effects — they can increase or decrease depending on local conditions.

🏔️ Reservoir constructions are often connected to changes in the mean flow – but these changes are poor indicators for changes of extreme flows

#floods #alps #hyclimm #eth #iac #slf

Using data from before and after reservoirs began their operations, along with upstream–downstream comparisons, they found that:

💧 Floods are generally smaller downstream of large reservoirs — 2-year floods drop by ~40 % when reservoir storage exceeds one month of average flow.

How do reservoirs shape streamflow extremes in the Alps?

🌊 New paper from our team!

In his latest study, our #HYCLIMM member Jonas Götte and co-authors analyzed Alpine catchments to understand how (hydropower) #reservoirs influence #streamflow extremes.

🔗 doi.org/10.1088/3033...

#hydrology

👩‍🚒 👩‍💼 👩‍⚕️ We enjoyed the wonderful opportunity to exchange with wildfire researchers, managers, and firefighters!

🐦‍🔥 Stay fiery, but don't get burnt.

#XFire2025 #HYCLIMM #ClimateResearch #Wildfire
@slfdavos.bsky.social @usyseth.bsky.social

🔥 Last week, Xinhang Li and Julia Miller attended the 1st International Workshop on Extreme Wildfire Events X-Fire 2025 and presented:

🌦️ (1) The relationship between wildfire synchronicity and weather regime in Europe.

🌍 (2) Weather conditions conducive to wildfire in a warmer Europe.

HYCLIMM at IMC 2025!

Last week, HYCLIMM members @mariagrundmann.bsky.social, Joren Janzing, and Raul Wood attended the International Mountain Conference in Innsbruck.
Stay tuned for upcoming papers!

#IMC2025 #HYCLIMM #ClimateResearch #MountainHydrology
@usyseth.bsky.social @slfdavos.bsky.social

Learning, connecting, and exploring hydrology in action! 🌊 @mariagrundmann.bsky.social & @cchartierrescan.bsky.social took part in the 16th Catchment Science Summer School at the University of Birmingham and came back with a lot of new insights and inspiration! ✨

Comparison of high-resolution climate reanalysis datasets for hydro-climatic impact studies Abstract. Continuous high-quality meteorological information is needed to describe and understand extreme hydro-climatic events, such as droughts and floods. Observation-based information of the highe...

📢 Check out our newest publication: hess.copernicus.org/articles/29/...

🔍 How reliable are reanalysis datasets for studying hydro-climatic extremes?

📊 All have strengths, but one stands out. Want to know which one?

@slfdavos.bsky.social @ethz.ch
#C3S #hydrology #ClimateScience

🤩New paper from our team member @cchartierrescan.bsky.social entitled 'Snow drought propagation and its impacts on streamflow drought in the Alps' published on Environmental Research Letters! Big congrats! Check out more details here: iopscience.iop.org/article/10.1...

#ClimateChange #Hydrology

A group of hydrologists are standing next to a mountain stream.

Last week, James Kirchner, @harshberia.bsky.social and @mfhydro.bsky.social visited us in Davos to discuss the ongoing field study of river water temperature and their study on river isotopes! Thanks for the nice discussions!

#dischma
@manuelaibrunner.bsky.social @mariagrundmann.bsky.social

Co-authors: @manuelaibrunner.bsky.social, Peter Molnar, Joren Janzing

Suspended sediment concentrations in Alpine rivers: from annual regimes to sub-daily extreme events Abstract. The occurrence of extreme suspended sediment concentrations (SSCs) in rivers can have negative impacts on human infrastructure, water quality, and the health of aquatic ecosystems. However, ...

🥳 New paper by Amber van Hamel

🐟 Extremely high suspended sediment concentration in rivers negatively impact the health of aquatic ecosystems.

❔Curious?

➡️ Suspended sediment concentrations in Alpine rivers: from annual regimes to sub-daily extreme events: hess.copernicus.org/articles/29/...