Advancing the Environmental Sustainability of Observing Systems and Methods: Insights From the International Community

Earth system observations are foundational to global numerical weather and environmental prediction. The World Meteorological Organization (WMO) sets requirements for its members to provide the type, frequency, and spatial resolution of observations to meet the needs of global prediction via its Global Basic Observing Network (GBON) programme. Meeting these requirements, however, can result in significant environmental impacts, such as new station installations with additional maintenance requirements or more radiosonde launches. To address this challenge, the WMO launched a dedicated initiative to promote and advance the environmental sustainability of observing systems and methods.

An international survey was conducted to benchmark WMO Member experience and perspectives with respect to environmental sustainability for meteorological (surface and upper air), marine, hydrological, and atmospheric chemistry observational domains. The survey covered current, planned, and potential activities to enhance sustainability across the observing system life cycle, including network planning and design, procurement, siting and installation, operations, and decommissioning. The survey also explored Member perceptions of key opportunities and challenges. Over 100 responses to the survey were obtained from 78 of the 193 WMO Member States and Territories.

Through the survey, an initial inventory of best practices was established and key gap areas were identified. To address these gaps, foster sharing of information and best practices, and highlight challenges faced by different WMO Members, a Virtual Workshop on Environmental Sustainability of Observing Systems and Methods is planned for September 2023. With over 380 registered participants from across National Meteorological and Hydrological Services, industry, and academia, the workshop will focus on two themes: observing systems, including instrumentation and infrastructure; and policies, programs, and standards.

Collectively, these activities advance awareness and consideration of environmental sustainability across the observing system life cycle, and their outcomes will feed into practical and pragmatic recommendations for WMO Members and industry. This presentation will provide an overview of the international survey and virtual workshop, highlighting key results and takeaways, with a focus on observing systems and instrumentation.