•  28 February 2026: the deadline for submission of abstracts

Requirements

Submission of an abstract implies that organizers have permission to reproduce the abstract in the program and reports related to the conference.

Instructions

The call for abstracts is open for oral and poster presentations.  If you are submitting an abstract, you must be the presenter and first author.

Key contemporary challenges include advancing the treatment of nonlinear and multi-scale system dynamics, addressing complex observation operators, and managing variables with non-Gaussian characteristics. Thus, this symposium aims to review latest developments and address issues of common interest to DA. The main following topics will be covered during the symposium:

Methodology

Contributions could for example address: DA theory and mathematics, ensemble approaches, non-linear and non-Gaussian DA, convective-scale and ultra-rapid DA, innovative approaches to reanalysis

Observations

Contributions could for example address: assimilation of remotely sensed observations (satellite, radar, GNSS, and unconventional observations), observations and impacts, OSSE, OSE

Hybrid DA and ML

Contributions could for example address: integration of ML to DA, hybrid DA and ML techniques, fully data-driven DA frameworks, predictability and uncertainty quantification for ML-based models, feedback from DA to ML

DA infrastructure and center updates

Contributions could for example address: developments in DA infrastructures (e.g., DART, JEDI, PDEF), updates from operational centers on DA, updates from global and regional reanalysis producers

DA for the Earth system

Contributions could for example address: atmosphere-land/ocean/sea ice coupled DA, atmospheric composition DA, seamless approaches - from minutes to seasons / multi-scale aspects, paleoclimate DA

Broad Applications, Perspectives and Predictive Sciences

Contributions could for example address: digital twin and controllability, extreme events and high-impact weather in forecasting and reanalysis, renewable energy, hydrology, socio economic applications

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