PDAF at the EGU General Assembly 2026

The PDAF developers will be present at the EGU General Assembly from May 4 to 8, 2026 in Vienna, Austria.

== Short Course ==

**Getting Started with Data Assimilation: Theory and Application**[[BR]] 
Co-organized by AS6/CR8/ESSI6/HS11/NP9  [[BR]]
Convener: Qi Tang | Co-conveners: Lars Nerger, Armin Corbin, Yumeng Chen, Nabir Mamnun[[BR]]
Wed, 06 May, 16:15–18:00 (CEST) [[BR]]
Room -2.82 [[BR]]

Data assimilation (DA) is widely used in the study of the atmosphere, the ocean, the land surface, hydrological processes, etc. The powerful technique combines prior information from numerical model simulations with observations to provide a better estimate of the state of the system than either the data or the model alone. This short course will introduce participants to the basics of data assimilation, including the theory and its applications to various disciplines of geoscience. An interactive hands-on example of building a data assimilation system based on a simple numerical model will be given. This will prepare participants to build a data assimilation system for their own numerical models at a later stage after the course.
In summary, the short course introduces the following topics:

(1) DA theory, including basic concepts and selected methodologies.
(2) Examples of DA applications in various geoscience fields.
(3) Hands-on exercise in applying data assimilation to an example numerical model using open-source software.

This short course is aimed at people who are interested in data assimilation but do not necessarily have experience in data assimilation, in particular early career scientists (BSc, MSc, PhD students and postdocs) and people who are new to data assimilation.


== Presentations by PDAF Users and Developers ==

There will presentations by different users and developers of PDAF, for example

EGU26-22041 | Orals | NP1.1 [[BR]]
**The Parallel Data Assimilation Framework (PDAF) - Upgrade to Version 3** [[BR]]
Lars Nerger, Yumeng Chen, Armin Corbin, and Johannes Keller [[BR]]
Tue, 05 May, 12:15–12:25 (CEST)[[BR]] 
Room -2.15


EGU26-6344 | ECS | Orals | OS4.7 [[BR]]
**Development of Ocean Reanalysis for Coupled Physical-Biogeochemical Prediction Using PDAF with GFDL-ESM4** [[BR]]
Woojin Jeon, Jong-Yeon Park, Hyeon-Chae Jung, and Hyo-Jong Song[[BR]]
Fri, 08 May, 11:20–11:30 (CEST) [[BR]]
Room L2

EGU26-18389 | ECS | Orals | HS2.1.4[[BR]]
**Impact of Snow Data Assimilation on Land-Surface Energy Fluxes at Sites Across Europe Using eCLM-PDAF **[[BR]]
Buliao Guan, Lukas Strebel, Johannes Keller, Harrie-Jan Hendricks Franssen, Gabrielle De Lannoy, and Bibi S. Naz [[BR]]
Tue, 05 May, 09:15–09:25 (CEST)[[BR]]
Room 3.29/30