CaMa-Flood Annual Briefing

CaMa-Flood Annual Briefing 2025 will be held on 13 March 2026 (Friday), online via Zoom.

This annual event provides an overview of recent achievements related to the global river model CaMa-Flood, and offers an opportunity for users and developers to showcase their work and strengthen the research network.

The primary focus of the 2025 annual briefing is to introduce and share research papers mainly published in 2025 within the CaMa-Flood community, and to provide a comprehensive overview of recent scientific progress related to CaMa-Flood.

Registration is now open.
Please register to have presentation via the online registration form by 14 February 2026.

Note: If you are unable to attend the meeting on 13 March 2026, a pre-recorded video presentation is also welcome.
This is a good opportunity to showcase your achievements within the CaMa-Flood community.
For video presentations, please make sure to register using the same online registration form.

About the CaMa-Flood annual briefing

The CaMa-Flood Annual Progress Briefing is a yearly event to review achievements related to the global river model CaMa-Flood.
This briefing provides an opportunity for CaMa-Flood users, developers, and contributors to showcase their achievements, as well as a chance to enhance the research network within the community.

The briefing starts with a summary of key progress reported by the core development team.
This is followed by a series of short talks in which CaMa-Flood users introduce their achievements.
In addition, one or two invited talks may be organized to highlight particularly important achievements.

The primary purpose of the annual briefing is to create a catalogue of CaMa-Flood-related research and make it visible both within the CaMa-Flood community and to the broader research community.
To this end, CaMa-Flood users and contributors are asked to prepare a short summary of their achievement (1–2 pages), which will be compiled and published as the CaMa-Flood Annual Progress Report in PDF format.
In addition, presentations given during the online meeting will be recorded and released as a video report, allowing participants’ research achievements to be featured in a lasting and accessible form.

Note: We also plan to hold a CaMa-Flood user/developer meeting every two years, which prioritizes in-depth discussions on frontier topics and future directions.
The annual briefing primarily focuses on summarizing recent achievements, while networking within the CaMa-Flood user community remains an important objective of both meetings.

Meeting Info

Date and format

The CaMa-Flood Annual Progress Briefing 2026 will take place
on 13 March 2026 (Friday), Online via Zoom.

Meeting Time

The meeting will be held from 11:00 AM to 1:30 PM (GMT) on 13 March 2026.

8:00 PM – 10:30 PM in Tokyo, Japan
4:30 PM – 7:00 PM in New Delhi, India
11:00 AM – 1:30 PM in London, UK
7:00 AM – 9:30 AM in Washington, DC, USA

Registration Form

If you would like to join the online briefing, please register using the following Google Form:
https://forms.gle/3KNJBdPmpwTV8iUj9

The Zoom meeting URL will be provided after registration.
If you have any trouble accessing the registration form, please contact the meeting organizer
(Dai Yamazaki: yamadai [at] iis.u-tokyo.ac.jp).
If you are unable to attend the meeting on 13 March 2026, a pre-recorded video presentation is also welcome.
For video presentations, please make sure to register using the same registration form.

Important dates and deadlines

(For attending)

Registration for online participation: open
Meeting date: 13 March 2026

(For presenting your achievement)

Registration for presentation: by 14 February 2026
Submission of 2-page achievement summary: by 28 February 2026
The CaMa-Flood Annual Progress Report 2025 will be published after the meeting

Note: Detailed instructions for the achievement summary will be shared with registered presenters by email.

Note for presenters

The meeting aims to share achievements related to CaMa-Flood, with a primary focus on research published in 2025.
We therefore assume that the work has already been made publicly available (e.g., journal publications, online documents, or web content), and that a summary of the work will be presented at the briefing.
(If the work is not yet published, it can be introduced in a future annual briefing.)

If an achievement has not been presented in previous CaMa-Flood Annual Briefings, relevant papers published in 2024 or earlier are also welcome.
(Work that has not yet been published can be introduced in a future annual briefing.)

Any achievements related to CaMa-Flood are welcome, including:

Development of new schemes or tools for CaMa-Flood
Application studies using CaMa-Flood (e.g., flood risk assessment)
New datasets or tools useful for CaMa-Flood
Use of CaMa-Flood in climate or weather services (operational or applied studies)

All presenters are requested to submit a 2-page achievement summary.
Please submit the summary in an editable format (e.g., MS Word or equivalent).
The organizing team will take care of formatting, layout, and overall design to ensure consistency across contributions, based on the style of the previous annual report.

If you are unsure whether your achievement fits within the scope of the meeting, please feel free to contact the organizing team
(yamadai [at] iis.u-tokyo.ac.jp).

CaMa-Flood Annual Progress Report 2024

The CaMa-Flood Annual Progress Report 2024 was developed based on contributions submitted for the CaMa-Flood Annual Briefing 2024, which was held in March 2025.
We sincerely thank all CaMa-Flood users and developers who contributed to this annual report.

2024 Annual Progress Briefing Part 1

2024 Annual Progress Briefing Part 2

2024 Annual Progress Briefing Part 3

CaMa-Flood Overview Lecture and Reference Materials

To provide a comprehensive introduction to the CaMa-Flood model and its development history, we share an overview lecture and a reference paper that together serve as official explanatory materials for CaMa-Flood.

Commemorative Lecture on CaMa-Flood Development

Dai Yamazaki received the AOGS Kamide Lecture Award (Hydrology Section) and delivered a commemorative lecture in August 2021, providing a comprehensive overview of the development, concepts, and applications of the CaMa-Flood global river model.

The recorded lecture is publicly available on YouTube and serves as an introductory resource for users who wish to understand the foundations of CaMa-Flood.

Watch the lecture on YouTube

Review Paper on the Development History of CaMa-Flood (2010–2025)

Based on the concepts and discussions presented in the commemorative lecture, the following review paper summarizes the development history of CaMa-Flood from 2010 to 2025, with a particular focus on the catchment-based macro-scale floodplain modeling approach.

Yamazaki, D. (2025)
Advancing global river hydrodynamics simulations by catchment-based macro-scale floodplain modeling approach
Geoscience Letters, 12, 72
DOI: 10.1186/s40562-025-00452-z

This paper provides a structured and up-to-date reference for researchers interested in the theoretical background, model evolution, and key scientific advances underpinning CaMa-Flood.

AOGS 2026: Large-scale River Modeling Session

We will organize a Large-scale River Modeling session at AOGS 2026.

The conference will be held from 2 to 7 August 2026 in Fukuoka, Japan.
Please consider joining the session, and we look forward to meeting you there.

Abstract submission deadline: 23 January 2026
AOGS 2026 meeting webpage

Session Information

HS12: Advances in Large-scale River Modeling: Developments and Applications

Conveners

Dr. Dai Yamazaki (The University of Tokyo)
Dr. Peirong Lin (Peking University)
Dr. Fitsum Woldemeskel (Bureau of Meteorology)
Dr. Xudong Zhou (Ningbo University)

Scope
Large-scale river modeling has continuously evolved in recent years due to improved conceptualization of river flow physics, new schemes for representing river infrastructures, advances in baseline geographic data (e.g., elevation and river networks), and increasing computational resources.
These developments have enabled advanced applications such as global-scale flood risk assessment, continental-scale real-time flood forecasting, coupling with Earth system models, and integration of satellite river observations through data assimilation.

This session welcomes research related to the development and/or applications of large-scale river models, as well as new scientific discoveries derived from such models and local decision-support applications.
The session aims to review frontier research in large-scale river modeling and to discuss future challenges and directions.

CaMa-Flood Developer/User Meeting 2026

We will also host the CaMa-Flood Developer/User Meeting 2026 on
10–11 September 2026.

Format: Face-to-face, on-site meeting
Venue: ECMWF, Reading, United Kingdom

This meeting will focus on in-depth discussions among CaMa-Flood developers and users, including technical developments, future directions, and collaborative opportunities.

Detailed information, including the program and registration, will be announced later.
Information on the previous CaMa-Flood developer/user meeting can be found on the corresponding webpage.