28th COSMO General Meeting, 2026

Rome Italy, 14-18 September 2026

the COSMO General Meeting 2026 took place at the premises of the Centre for High Defence Studies(CASD), located in Piazza della Rovere 83, Rome, in 14-18 Sep 2026.

1. Agenda, plennary sessions (as pdf)

Monday, Sep. 14
9:00 WGs, PPs, PTs
& STC meetings
10:30 coffee
11:00 WGs, PPs, PTs & STC meetings
12:30
lunch
14:00 WGs, PPs, PTs & STC meetings
15:30 coffee
16:00-18:00 WGs, PPs, PTs & STC meetings
18:00 ice breaker
Tuesday, Sep. 15
chair: C. Gebhardt 9:00 Opening 📷 9:20 C. Schraff,
V. Poli
WG Data Assimilation ▼ 9:55 M. Baldauf WG Dynamics & Numerics ▼
chair: H. Muskatel 11:00 M. Milelli,
G. Ceci
WG Support & Infrastructure ▼ 11:35 D. Rieger SCA Report ▼ 11:55 C. Marsigli,
E. Minguzzi
WG EPS & Predictability ▼
Wednesday, Sep. 16
chair: M. Milelli 9:00 organizational info 9:10 Italy national presentation ▼ 9:30 Poland national presentation ▼ 9:50 Romania national presentation 10:10 Switzerland national presentation ▼
chair: M. Baldauf 11:00 Germany national presentation 11:20 A. Iriza-Burca,
A. Mazur
WG Verification & Applications ▼
chair: V. Poli 14:00 G. Zängl ICON news ▼ 14:30 M. Miglietta Numerical modeling of medicanes: challenges and future perspectives ▼
free time15:30-19:30
19:30 Social Dinner
Thursday, Sep. 17
chair: C. Schraff 9:00 A. Hoshyaripour ICON-ART news ▼ 9:25 C. Steger CLM news ▼ 9:50 Greece national presentation 10:10 Israel national presentation ▼
chair: A. Iriza-Burca 11:00 H. Muskatel,
& P. Schulz
WG Physics ▼
& ▼
12:20 A. Vocino STC report ▼ 12:40 AOB
13:00 lunch
14:00+SMC
15:30 coffee
16:00-18:00SMC
Friday, Sep. 18
9:00SMC
11:00-TBDSMC

2. presentations, parallel sessions

wgPHY-RCAC

all participants

session agenda ▼

M. Bourba

ICON’s solar eclipse parametrization ▼

D. Rieger

Simplified Prognostic Aerosol ▼

E. Avgoustoglou

On the Sensitivity of the “PYRCEL” version of ICON Model over Greece ▼

O. Carlo

ICON-ART at CMCC: Status and Next Steps ▼

C. Steger

Investigating precipitation overestimation and spillover in the Swiss Alps during southerly flow ▼

A. Hoshyaripour

ICON-ART Status & Highlights ▼

J. Förstner

Dusty Cirrus and 2-Moment Ice Microphysics ▼

H. Muskatel

Cloud-Aerosols Interactions in ICON ▼

M. Köhler

Orbits for ICON ▼

P. Khain

Mixed-phase spectral-bin microphysics in ICON ▼

wgPHY-SFC-PBL

all participants

session agenda ▼

N. Wever

NIX in Modular TERRA ▼

M. Baldauf

Coupling of turbulence schemes with the Discontinuous Galerkin solver ▼

L. Beltrami

Sensitivity analysis of Planetary Boundary Layer height parameterization in the ICON-CHIMERE modeling chain ▼

M. Raschendorfer

ConSat: Prospects for a clean and numerically stable coupling between atmosphere and a heterogeneous surface ▼

M. Raschendorfer

ConSat: STIC and other possible extensions for turbulence in ICON-NWP ▼

D. Mironov

TKESV Turbulence Scheme within ICON ▼

M. Ahlgrimm

Evaluation of turbulence by Doppler lidar observations ▼

C. Steger

Updates on the grid- and subgrid-scale radiation-topography scheme in ICON ▼

D. Littmann

The Implementation of the Leonard-Terms ▼

J. Roque

Decadal convection-permitting irrigation impact across the European Continent ▼

JP. Schulz

The impact of ParFlow’s 3D subsurface hydrodynamics on ICON’ atmosphere ▼

J. Förstner

A new diagnostic for PBL height ▼

J. Helmert

Advances in ICON External Parameter Generation and Land-Surface Modelling ▼

J. Helmert

Advancing High-Resolution Land Cover in ICON/EXTPAR ▼

L. Strebel

ICON’s atmosphere-land-coupling configurations ▼

G. Sequino

Assessing local hydraulic soil properties impact on Land Surface Models (LSMs) outputs ▼

M. Raffa

Coupled ICON-A/ICON-O-LAM experience at CMCC ▼

G. Zängl

Extending the skin-temperature scheme to snow-covered grid points ▼

wgPHY-URB

all participants

session agenda ▼

S. Gabrian

Recovering the late phase of a retrograding storm ▼

S. Gabrian

Monthly verification of the new operational configuration of ICON-RO with TERRA_URB ▼

L. Mattavelli

Evaluation of ICON-2I with TERRA-URB across Winter and Summer Seasons ▼

A. Campanale

Synergies among Urban Heat Islands, Urban Dry Islands, and Heat Stress during heatwaves ▼

C. Steger

The effect of TERRA_URB in a kilometre-scale ICON forecasting configuration ▼

A. Zonato

UTCIcast: A Scalable Urban Thermal Stress Forecasting System Powered by GLIDE-SOL ▼

A. Jaczewski

Urban modelling activities in 2026 at IMGW ▼

A. Iriza-Burca

Study of a temperature inversion case over eastern Romania: modelling errors ▼

T. Houget

Local-Scale Urban Heat Island Modeling: A Machine Learning Approach Using Citizen Data ▼

joint wgSI & wgEPS

all participants

session agenda ▼

E. Minguzzi, A. Iriza-Burca

NWP TS update ▼

E. Minguzzi

NWP-TS update ▼

E. Minguzzi

ICON-LEPS update ▼

wgSI

all participants

session agenda ▼

M. Milelli

welcome ▼

P. Baumann

Fieldextra Status Report & Modernization of NWP Workflows at MeteoSwiss ▼

X. Lapillonne

ICON on GPU / Kokkos / GT4py ▼

G. Franch

A km-scale, fully AI-based limited-area model for Italy ▼

M. Milleli

A proposed new web site ▼

D. Rieger

SCA Report for ICON ▼

wgDA

all participants

session agenda ▼

D. Leuenberger

Data Assimilation Activities at MeteoSwiss ▼

C. Schraff

DA activities at DWD ▼

T. Gastaldo

Data Assimilation at Arpae ▼

A. Falcione

ICON-IT artificial low clouds over Sea of Sardinia ▼

F. Vittorioso

Data Assimilation activities at CMCC-REMHI ▼

T. Gastaldo

Partial Analysis Increments ▼

pp ACOCS

all participants

session agenda ▼

M. Szaton (IMGW)

Development of a quality control procedure for CML-derived precipitation data ▼

V. Garbero (ARPA-P)

Quality control methods for non-conventional rainguage datasets and measurement data from non-official weather station networks ▼

M. Szaton (IMGW)

Improving RainGRS+ precipitation estimates by combining different types of data in more efficient and seamless manner ▼

A. Jaczewski (IMGW)

Development of the COSMO PWS Database ▼

D. Boucouvala (HNMS)

Greek stations data processing and quality control ▼

F. Gofa (HNMS)

Adaptation of private/citizen datasets for verification purposes over Greece ▼

A. Jaczewski (IMGW)

Application of PWS to NWP model verification in urban areas ▼

A. Jaczewski (IMGW)

Application of gridded RainGRS+ precipitation estimates for assimilation in NWP models ▼

wgEPS

all participants

session agenda ▼

P. Khain

Best-Member approach using satellite data ▼

A. Mazur

Operational development of EPS at IMGW ▼

A. Frigato

ICON-2I ensemble system at Arpae ▼

Z. Parsakhoo

SPP development in ICON ▼

G. Zakrzewski

SPP in ICON: cloud microphysics parameters ▼

C. Gebhardt

Recent Upgrade of ICON-EU-EPS, Verification ▼

wgVA

all participants

session agenda ▼

S. Gabrian

WINDMIL-AI: research to pre-production ▼

F. Fundel

FFV2 Update ▼

T. Gastaldo

Model Verification at ARPAE ▼

D. Boucouvala

COSMO-LEPS Ensemble verification scores ▼

A. Mazur

Verification of Operational EPS ▼

A. Mazur

Meteorological support for non-engine aircraft users ▼

A. Iriza-Burca

Common Plots Updates ▼

A. Iriza-Burca

FFV2 container implementation ▼

P. Kaufmann

ICON verification using rain gauge data corrected according to SPICE ▼

N. Vela

Fuzzy Verification on Common Areas ▼

wgDYN

M. Baldauf

BRIDGE with moisture ▼

S. Borchert

Thermodynamic considerations related to rain, Kessler scheme in BRIDGE ▼

Reanalysis

A. Valmassoi

ICON Reanalyses Status ▼