1st CIPM STG-CENV • Stakeholder meeting • 16-18 September 2024 • BIPM • Sèvres (France)

Meeting organization

Theme 1: Metrology in support of the physical science basis of climate change and climate Observations

Code Topic Co-chair 1 Co-chair 2

Atmosphere Physics and Chemistry

Betsy Weatherhead
Fabio Madonna

Oceans and Hydrology

George Petihakis
Johannes Karstensen

Earth Energy Balance

Laurent Vuilleumier
Thorsten Fehr

Biosphere Monitoring

Julia Marrs
Rubén Urraca

Cryosphere Monitoring

Emma Woolliams
Filomena Catapano

Cross-cutting issues

Dolores del Campo


Emma Woolliams
Fabio Madonna

Theme 1: recommendations






Theme 2: Metrology as an integral component of operational systems to estimate greenhouse gas emissions based on accurate measurements and analyses

Code Topic Co-chair 1 Co-chair 2

Accuracy requirements for atmospheric composition measurements across economic sectors, and temporal and spatial scales

Robert Wielgosz
Sergi Moreno Valero

State of play in integrated approaches for advanced GHG emission estimates and the way forward to operational services.

Leonard Rivier
Phil de Cola

Novel GHG concentration and flux methods and sensors

Hong Lin
Kevin Cossel

Strengthening the linkage of remote sensing GHG concentration measurements to emission fluxes

Richard Barker
Annmarie Eldering

Emerging Metrology Issues (Oceans, CCUS, CDR, Agricultural Emissions…)

Maribel Garcia-Ibañez
Pamela Chu

Chairs and co-chairs

Julia Marrs

Member of the Greenhouse Gas Measurement Group
Back to all chairs and co-chairs

Julia Marrs is a member of the Greenhouse Gas Measurement Group at the National Institute of Standards and Technology. Previously, she was a National Research Council postdoctoral research associate in the Remote Sensing Group at NIST, where her work focused on linking optical and carbon fluxes at two testbeds, the Forested Optical Reference for Evaluating Sensor Technology (FOREST) and the Turf for the Urban Respiration Fraction (TURF) sites. She received her Ph.D. in Geography from Boston University, where she used tower-based solar-induced fluorescence sensors to study leaf-level partitioning of absorbed light by plants across spatial and temporal scales, with the overall application of validating space-based measurements of greenhouse gases using optical measurements made from ground-based platforms. Her overarching interest in remote sensing of vegetation continues through her other work on the development of hyperspectral sensor characterization and calibration protocols traceable to SI scales, harmonizing optical data collection methods for increased data intercomparability across field sites, and biogenic carbon flux modeling for the Northeast Corridor of the United States using the Vegetation Photosynthesis and Respiration Model (VPRM).