This is a Call for Contributions to the WMO/WCRP/WGNE publication "Research Activities in Earth System Modelling" (2025 WGNE Blue Book). More information about this annual publication can be found at https://www.wcrp-esmo.org/working-groups/wgne/wgne-publications.

Contributions are requested under the following topics:

• Development and studies of coupled models and Earth System Models
• Global and regional climate models: response to forcing, impact studies, subseasonal and seasonal forecasting
• Advances in forecast / NWP models: case studies, predictability, ensembles
• Parameterization of physical processes in Earth System Models or their components
• Forecast verification: novel methodologies to diagnose and measure systematic errors
• Uncoupled and coupled data assimilation for integrated earth system analysis and prediction; methodology and data impact sensitivity studies
• Developments in ocean, sea-ice, and wave modeling
• Reanalysis datasets and statistical post-processing
• Numerical/computational techniques and model resolution, physics-dynamics and physics-physics cross-component coupling
• Machine learning and AI in weather prediction and climate modeling

The contributions are requested as PDF files with a maximum length of two pages (including references and any diagram, figures, or tables). Please use the linked doc or LaTex templates to prepare your submission. Submissions not adhering to the template or length requirements may be rejected. Submissions can be made at this link: https://airtable.com/appdb5vZICxlH6C6v/pagPjnAQGKVL1sxrP/form.

The Global Ocean Observing System (GOOS) is seeking applications for Vice Chair of WMO/WIGOS for its Observations Coordination Group (OCG). 

The World Meteorological Organization (WMO) Integrated Global Observing System (WIGOS) is a WMO priority as the overarching framework for all observing systems delivering for weather, climate, and water applications. WIGOS provides a framework for all the WMO-sponsored and co-sponsored observing systems, within which GOOS is a key component. The OCG works to guide and strengthen the implementation of GOOS and relevant aspects of WMO observing systems through coordinating across the global ocean observing networks, and the OCG Vice Chair WMO/WIGOS acts as a bridge between the oceanographic and meteorological communities, and undertakes the activities as detailed in Annex 1. The deadline to apply is 26 September 2025. 

New Manuscript Submission Deadline: 29 September 2025

Frontiers in Earth Science is soliciting contributions for a special issue for the 5th Baltic Earth Conference. The Research Topic, "New Challenges for Baltic Sea Earth System Research", is rooted in the 5th Baltic Earth Conference held in Jurmala, Latvia, 13–17 May 2024. Contributions from the conference and also manuscripts from other coastal sea regions worldwide are welcome related to:

• Biogeochemistry of the Baltic Sea
• Natural hazards and extreme events
• Sea level dynamics, sediment dynamics, coastal processes, and impacts on coasts
• Human impacts, interactions, and management options
• Modeling past and future climate changes and teleconnections
• Small scale processes not yet resolved and their impact on the large scale dynamics and patterns
• Comparing marginal seas worldwide
• Philosophical aspects of Baltic Sea Earth system research

For more information, see the conference website: https://baltic.earth/jurmala2024.

Submission Deadline: 1 October 2025

This special issue of Soil invites papers that study soil dynamics using numerical and statistical models. The focus will be on the development of model-based representations, or digital twins, of soil systems to study soil processes, dynamics, and functions from the pore to the landscape scale and from diurnal dynamics to millennial evolution. By bringing together modelers and models that work on different spatiotemporal scales, the issue aims at synergies between soil hydrology, soil physics, soil geography, and soil ecology to develop holistic models that consider soils and their functions as dynamic systems. This SI is an initiative of the International Soil Modeling Consortium (ISMC, https://soil-modeling.org/) and the 3-4D Soil models working group (https://dbges.de/en/commissions-and-working-groups/working-groups/wg-3-4d-soil-models), part of the German Soil Science Society.

Dates: 14–18 September 2025
Location: Innsbruck, Austria

The International Mountain Conference (#IMC) builds upon the previous mountain conferences and aims to continue this scientific conference series exclusively targeted towards mountain research. The key goals of the conference are to synthesize and enhance our understanding of mountain systems, in particular their response and resilience to global change. Two GEWEX-related sessions are listed below:

• FS 3.316: Precipitation Changes in Mountainous Hydroclimates
• FS 3.116: High mountain hydrology and cryosphere under global change: observations, modelling, prospects

Dates: 14–17 October 2025

Location: Arcachon, France

Extended Abstract Submission: 15 June 2025

The next SWOT Science Team Meeting from 14–17 October 2025 in Arcachon, France, welcomes contributions from researchers beyond SWOT science team members. This meeting will showcase the extensive scientific advancements achieved using SWOT data. In this exploitation phase of the mission, the Science Team will highlight remarkable accomplishments in oceanography, hydrology, estuary studies, cryosphere research, and groundbreaking discoveries, as well as the emergence of new user communities inspired by SWOT, such as surface topography and soil moisture. For for more information, visit https://swot2025.org/.

Dates: 13–17 April 2026

Location: Heringsdorf, Usedom, Germany

The Baltic Earth scientific network strives to achieve an improved Earth System understanding of the Baltic Sea region as the basis for science-based management in the face of climatic, environmental, and human impact in the region. Baltic Earth targets the atmosphere, land, and marine environment of the Baltic Sea, its drainage basin, and nearby areas with relevance for the Baltic Sea region. 

Baltic Earth has entered a new phase, called Baltic Earth 2.0, characterized by a new secretariat shared between Germany and Poland and revised research topics, which will be the foci of the conference. The updated and new research foci will be presented and discussed by scientists, students, managers, and other stakeholders. Abstract submission will open in October 2025. 

Institution: LEGOS, Toulouse, France
Deadline: 10 September 2025

The research engineer will support the scientific activities of the Energy, Mass and Climate Change (EMC2) team, with a primary focus on advanced satellite data processing, the development of structured scientific databases, and technical support for climate and convective storm studies. The position will be hosted at the Laboratory for Geophysical and Oceanographic Studies (LEGOS), located on the Observatoire Midi-Pyrénées campus in Toulouse, France.

Institution: LEGOS, Toulouse, France
Deadline: 10 September 2025

The research engineer will contribute to the scientific projects of the Energy, Mass and Climate Change (EMC2) team, focusing particularly on the most active regions of convective systems, where intense vertical motion and heavy precipitation are concentrated. Main activities will include developing, optimizing, and maintaining a Level 4 data fusion algorithm that integrates multiple sources of satellite observations;
designing structured, consistent datasets ready for use in machine learning and artificial intelligence workflows; contributing to deep learning developments; and more.

Institution: Laboratoire de Météorologie Dynamique (LMD), Paris, France
Deadline: Open until filled

The French ANR MOBYDYC project aims to improve our physical understanding of low-cloud feedback by building observable and energetically-constrained feedback mechanisms based on boundary-layer dynamics processes. To this end, it focuses on the spatial morphology of low clouds simulated by high-resolution models and observed by satellites, with an emphasis on stratocumulus. 

The post-doc proposal addresses part of the MOBYDYC project, namely the analysis of low-cloud morphological feedback constrained by energy conservation. This task can integrate different approaches and tools such as global climate models, global cloud-resolving models, large-eddy simulations, and observational data.

Institution: Simon Fraser University, Burnaby, B.C., Canada
Deadline: None specified

The Terrestrial Biosphere Modelling in CaNada (TBM-CaN) research group seeks interested Ph.D. students to apply for two Ph.D. projects, Projecting Carbon and Ecosystem Co-Benefits of Forest-Based Climate Solutions in Canada and Measuring Soil Greenhouse Gas Fluxes across Boreal and Arctic Disturbance Gradients. 

The TBM-CaN research group applies an interdisciplinary approach – combining empirical ecology and field work with global modeling of the terrestrial biosphere and climate change – with the goal of improving climate change projections informing climate policy and decision-making from local to global scales. ​New members will join a dynamic research group with the opportunity to develop strong working relationships with academic and government scientists across Canada.