Virtual WMO Workshop on Core Satellite Data for Nowcasting

Virtual WMO Workshop on Core Satellite Data for Nowcasting (15-16 October 2025)

The Workshop will be held online via MS Teams, with daily sessions lasting two and a half hours.

Building on the outcomes of the 2023 WMO Core Satellite Data Workshop, which successfully defined core and recommended data for the global Numerical Weather Prediction (NWP), at this Workshop WMO will be focusing on nowcasting application area.

The primary objective of the Workshop is to establish a list of core and recommended satellite data for the nowcasting application area. The target audience includes representatives from satellite operators and the nowcasting user community.

Expected outcomes of the Workshop are as follows:

To get to know regional requirements for satellite data with regards to nowcasting;
To address the main obstacles to increased exchange of satellite data and specific opportunities to overcome those challenges;
To determine the initial sets of satellite data for nowcasting to be designated as “core” and “recommended” for formal inclusion in the Manual of the WMO Integrated Global Observing System (WIGOS).

Provisional agenda

15 October 2025
CEST	Agenda item	Document
13:00	Welcome address (WMO, ET-SSU)
13:10	WMO Data Policy and Moving Toward Earth System Monitoring and Prediction (WMO Secretariat)
13:30	Session 1: Satellite Data Requirements for Nowcasting
13:30	Introduction to WMO Nowcasting position paper (Rainer Hollmann, DWD)
13:45	A regional perspective on global NWC from Africa (Morné Gijben, SAWS, Member of the WWRP Nowcasting and Mesoscale Research Working Group)
14:00	A regional perspective on global NWC from South America (Paola Salio, UBA, Argentina, Co-chair of the WWRP Nowcasting and Mesoscale Research Working Group)
14:15	A regional perspective on NWC from North America (TBC)
14:30	A regional perspective on NWC from Asia-Oceania (Masaaki IKEGAMI, Forecast Division, Atmosphere and Ocean Department, JMA)
14:45	A regional perspective on NWC from Europe (Ulrich Hamann, MeteoSwiss)
15:00	A Polar regions’ perspective on NWC (Janne Kotro, FMI)
15:15	The outcomes of DAY 1

15:30	End of DAY 1

16 October 2025
CEST	Agenda item	Document
13:00	Introduction to parallel break out group discussion
13:15	Session 2: Core satellite data for Nowcasting
13:15	Parallel break out group discussion – NWC user requirements for satellite data (questions are to be confirmed): Does the satellite data in draft NWC paper reflect your needs accurately? Which observations are most critical? Which observations do you lack access to? What’s your experience with observations that have been commercially acquired by space agencies? To what extent do you rely on open data wrt your nowcasting products?	Asia/Oceania
		Africa/Europe
		Americas
14:15	Results from parallel break-out group discussion (Chairs of break out groups, 10’ for each group)
14:45	Review the statement of the Workshop (Heikki Pohjola, WMO Secretarait)
15:10	Agreeing on core and recommended satellite data for NWC
15:20	Outcomes of the meeting

15:30	End of the Workshop

(Updated on 10 June 2025.)

Virtual WMO Workshop on Core Satellite Data for Nowcasting

Activity Areas (1)