HEPEX

Expressing probabilities could be the key for improved weather-based decision-making, according to new Met Office research.

Read more in our news release ⬇️
bit.ly/4qfyZYv

A world map with red and blue dots. Each dot denotes a water quality measurement station that is included in Caravan-Qual. Red dots are stations with additional streamflow observations. Blue dots are stations without streamflow observations.

Excited to unveil Caravan-Qual! 🌊

We've expanded the Caravan framework to bridge the gap between water quantity and quality.

This new open dataset features: 🔹 ~70M observations 🔹137k stations 🔹 100 constituents 🔹 Linked streamflow, forcing & attributes

Links in 🧵

Frontiers | On the value of mobile cosmic-ray neutron measurements for spatio-temporal soil moisture simulations High-resolution soil moisture measurements are indispensable for advancing hydrological modeling and improving environmental risk assessments at regional sca...

Integrating mobile CRNS soil-moisture data into the mHM model greatly boosts its ability to capture spatial and temporal moisture patterns. Forests remain challenging, but results show strong gains and good transferability for better hydrological forecasts.
www.frontiersin.org/journals/wat...

If you are going to attend EGU 2026 and are interested in statistical ML-based forecasting / nowcasting / post-processing in the geosciences, consider sumitting an abstract to our session NP 5.1, www.egu26.eu/session/55791

⏰ Deadline: January 15, 2026

Soil moisture shapes droughts, floods, and heat extremes, yet is hard to observe from space. Our new paper offers the first structured review of how AI is transforming soil moisture remote sensing, and where hybrid physics-AI approaches can take us next.
doi.org/10.1016/j.ja...
#AI4SoilMoisture #EO

Next week, we will mark our 50th anniversary in Reading, UK, following events earlier in the year at our sites in Germany and Italy.

Join us online on 3 December for the Showcase of European capabilities in machine learning and weather forecasting.

For details ➡️ www.ecmwf.int/en/about/med...

So, your forecasts are sharp and reliable, but are they valuable? Our new EMS paper on RUVPY is out - reference implementation of RUV. Honest assessment needs to be tailored to the specific decision. RUV is general enough to model almost any context. Go forth and tinker. doi.org/10.1016/j.en...

Are you our next HS Early Career Scientist Representative? It’s time to grow the Early Career Scientists (ECS) team of the Hydrological Sciences Division! We’re looking for the next ECS representative to contribute to coordinating social media, our newsletter...

EGU Hydrological Sciences is looking for its next Early Career Scientist Rep!

If you’re an ECS passionate about hydrology, science communication & community building, apply by 30 Nov.

Send CV + 1-page motivation to ecs-hs@egu.eu

blogs.egu.eu/divisions/hs...

Are you looking for a #PhD in #Climate, #Earth or #Environmental science? Oxford's ILESLA programme could be for you.

Its a four year funded degree meaning you get chance in the 1st year to learn essential skills and to work with potential supervisors to refine your research topic.

50 years of weather forecasting at the ECMWF - Nature Communications The European Centre for Medium-Range Weather Forecasts (ECMWF) is celebrating its 50th anniversary this year. In celebration of this occasion, we are talking with Dr. Florence Rabier, Director-General...

50 years of #weather forecasting at the @ecmwf.int, read the interview with Dr. Florence Rabier, Director-General of the ECMWF, on the occasion of this important anniversary and what has been achieved until now. www.nature.com/articles/s41...

Calling all Geoscience Gamers! Abstract submission is now open for @egu.eu #EGU26 and the Games for Geoscience session.

Your deadline is 15 Jan 26 and your time starts now!

Details though the link in the comments.

Still some time to apply for a PhD position in my group @ufz.de in my group with the focus on streams, hydrometric and isotopic signatures and ML: recruitingapp-5128.de.umantis.com/Vacancies/32... Looking forward for your applications 🤩

HEPEX through the Alabama Water Institute Podcast Series In March 2025, the Alabama Water Institute (AWI) and CIROH hosted the 20th anniversary of HEPEX, a milestone event that brought together scientists, practitioners and decision-makers from around th…

🚨New blog post🚨
Everyone needs more #HEPEX podcast content, including you 🫵

hepex.org.au/hepex-throug...

HEPEX through the Alabama Water Institute Podcast Series In March 2025, the Alabama Water Institute (AWI) and CIROH hosted the 20th anniversary of HEPEX, a milestone event that brought together scientists, practitioners and decision-makers from around th…

🚨New blog post🚨
Everyone needs more #HEPEX podcast content, including you 🫵

hepex.org.au/hepex-throug...

Excited to share our #AGU25 session: New Developments & Future Directions in Community Water Resources Modeling

Topics include: 💻Open software, cloud computing 🌐Process representation, uncertainty, model coupling 🧠ML 👥Social hydrology

🔗Submit an abstract by July 30: agu.confex.com/agu/agu25/pr...

YouTube video by FloodSkinner Using Games for Geoscience

Why we should and how we can use games for #geoscience

youtu.be/_jGdu2RS8N8?...

Huge congratulations to former HEPEX co-chair @fpappenberger.bsky.social!!

We have taken the ensemble version of the Artificial Intelligence Forecasting System (#AIFS) into operations!

It will run side by side with the traditional physics-based Integrated Forecasting System (IFS).

Find out more here
➡️ www.ecmwf.int/en/about/med...

Soil-moisture-atmosphere coupling hotspots and their representation in seasonal forecasts of boreal summer - Climate Dynamics This study examines soil-moisture-atmosphere coupling “hotspots” across the Northern Hemisphere during the summer months and evaluates their representation in seasonal forecasting systems. Using hindc...

Excited to share our new paper in @springernature.com Climate Dynamics exploring soil moisture–atmosphere coupling hotspots across the Northern Hemisphere in @copernicusecmwf.bsky.social #C3S #Seasonal forecasts. link.springer.com/article/10.1...
#ClimateScience #SoilMoisture #ClimateResearch

Early Career HEPEX Activity at the HEPEX 2025 Workshop: An Interactive Discussion on Tools, Resources & Skill Gaps in Hydrological Forecasting An Early Career HEPEX session on “Interactive Discussion on Tools, Resources, and Skill Gaps in Hydrological Forecasting” was organized on the last day of the HEPEX 2025 workshop. This session welc…

🚨 New Blog Post 🚨
Early career Hepexers got together at our recent workshop to talk career paths in hydrological forecasting. Here’s what they came up with 👇

hepex.org.au/early-career...

Our forecastst for Thermal stress for fishes

www.drought.ch/de/impakt-vo...

Very proud to have been involved in this. Fascinating and important study for drought (very) early warning, thanks for leading it @amulyachevuturi.bsky.social !

We are looking for a #Postdoc in 'hydrological modelling and climate impact assessments of extreme events'. Are you excited about #flood modeling and working on an applied project in the Canton of Valais? Apply here:
apply.refline.ch/273855/1743/...
@slfdavos.bsky.social @usyseth.bsky.social

An #Hepex community paper led by Ilias

journals.ametsoc.org/view/journal...

with @hepexorg.bsky.social @louiseslater.bsky.social @annie-yyc.bsky.social @jcbmmx.bsky.social @fpappenberger.bsky.social @antara-dasgupta.bsky.social @celinecattoen.bsky.social and others

From Research to Operations: How HEPEX Is Shaping the Future of Hydrological Forecasting Across Scales and Horizons For two decades, HEPEX has been contributing to making hydrological forecasts better, more useful, and more widely available. However, the beginning of 2025 was marked for both the HEPEX workshop i…

🚨 New Blog Post 🚨
Our community paper from our 2023 workshop is out!
hepex.org.au/from-researc...

Caravan News🐪🐫

I just published Version 1.6. The main update is that the source data for CAMELS-AUS was upgraded to CAMELS-AUS v2. This means more basins (561 vs 222) and more recent streamflow data (2022 vs 2014).

All relevant links in thread 🧵

(please share/repost)

Map of the GRIT global river network. Source: Wortmann et al. (2025), Water Resources Research.

🌐 Introducing GRIT: the First Global Bifurcating River Network 🏞
developed by Michel Wortmann as part of the NERC Large Grant EvoFLOOD, in the Hydro-Climate Extremes group @oxfordgeography.bsky.social

👋