Workshop Program
Register now
Workshop Program

Metrology, meteorology and climatology: joint effort on uncertainty evaluation
by Prof. Maurice Cox, Dr. Walter Bich, Dr. Andrea Merlone


Working Group 1 of the Joint Committee for Guides in Metrology, JCGM, and the ET-MU of the WMO held a workshop on “Measurement uncertainty in meteorology and climatology”. The workshop took place online on 5 and 6 April 2022. Its aims were - to recognize the current level of convergence in the field of measurement uncertainty; - to identify the outstanding problems (see “topics” below); - to contribute to addressing their solution; - to prepare one or more joint contributions (written or presentation) on measurement uncertainties (MU) in climate and meteorological measurements for the BIPM-WMO Workshop in September 2022. The topics covered were - Uncertainty-related concepts: precision, accuracy, calibration, traceability, representation uncertainty; - Modelling, definition of the measurand; - Bottom-up and top-down approaches (reconciliation); - Case examples. Nine presentations were given on the these topics, followed by a round table. Seventy-seven scientists, from all continents, registered for the event, and the average attendance was about sixty. In general, the workshop contributed to enhancing the cooperation between the JCGM-WG1 and the ET-MU of the WMO. In particular, it helped better understand which topics deserve highest priority. The key issues identified were: - the relationship between the “representation uncertainty” of meteorology-climatology and the “definition of the measurand” of metrology; - the interconnection between metrological traceability and measurement uncertainty, often misunderstood in both fields; - the invaluable role of modelling the measurement in a valid assessment of measurement uncertainty; - the reconciliation of bottom-up and top-down approaches in a unique framework. Some further specific issues were highlighted. As an example, there is a common need to extract meaningful means and standard uncertainties from time series. In the presentation, a summary report of the workshop and the outcomes of the round table including possible contribution to future recommendations are given. The key topics listed above are also briefly discussed.


Open in a new tab

Topic : Theme 1: Atmospheric Chemistry and Physics.
Reference : T1-A33

Back to the list of submissions
Previous submission · Next submission


Comments are only accessible to participants. If you are a participant, please log in to see them.