Aiming to ensure the metrological traceability to the International System of Units (SI) through national standards in meteorological observations and climate data, the joint research project "MeteoMet - Metrology for Meteorology" (www.meteomet.org) was funded by European Metrology Research Program in 2010. The major challenge of the project is the propagation of a metrological measurement perspective to meteorological observations, in order to better meet the expressed requirement of reliable data and robust datasets over wide scales and long terms. The project covers several aspects of meteorological observations from upper air to ground based measurements. It includes development and testing of novel instruments as well as improved calibration procedures and facilities, in-situ practical calibrations, an instrument intercomparison under real dynamic conditions, best practice dissemination. Historical temperature data series will be validated with respect to uncertainties and a methodology for recalculation of the values will be provided. The activities, tasks and deliverables, are described in this paper, with specific focus on key highlights achieved during the first half of the project: 1.Aquavit2: inter-comparison of airborne hygrometers and their calibration against a reference traceable water vapour standard. 2.Development of an innovative humidity calibration system for radiosondes.. 3.Development of a hygrometer based on microwave quasi-spherical resonant cavities (LNE-Cnam, missing) 4.Measurement of saturation vapour pressure of pure water in the temperature range between -90 °C and +100 °C (LNE-Cnam, missing) 5.Construction of a prototype acoustic interferometer air temperature sensor. 6.Processing strategies to derive the atmospheric water vapour content by Global Navigation Satellite Systems. 7.Construction of a reference radiation shield for automatic wheatear stations (AWS). 8.Manufacturing of a transportable calibration facility for AWS . 9.Collection of representative weather station and assessment of the needing of software validation of data-logger used. 10.Metrology for meteorology in agricultural sites 11.Development of a data base of historical temperature data series. 12.Harmonising and combining metrological and homogenisation approaches to develop historical temperature time-series
The "MeteoMet" project - metrology for meteorology: challenges and results
R Deboli;F Sanna;
2014
Abstract
Aiming to ensure the metrological traceability to the International System of Units (SI) through national standards in meteorological observations and climate data, the joint research project "MeteoMet - Metrology for Meteorology" (www.meteomet.org) was funded by European Metrology Research Program in 2010. The major challenge of the project is the propagation of a metrological measurement perspective to meteorological observations, in order to better meet the expressed requirement of reliable data and robust datasets over wide scales and long terms. The project covers several aspects of meteorological observations from upper air to ground based measurements. It includes development and testing of novel instruments as well as improved calibration procedures and facilities, in-situ practical calibrations, an instrument intercomparison under real dynamic conditions, best practice dissemination. Historical temperature data series will be validated with respect to uncertainties and a methodology for recalculation of the values will be provided. The activities, tasks and deliverables, are described in this paper, with specific focus on key highlights achieved during the first half of the project: 1.Aquavit2: inter-comparison of airborne hygrometers and their calibration against a reference traceable water vapour standard. 2.Development of an innovative humidity calibration system for radiosondes.. 3.Development of a hygrometer based on microwave quasi-spherical resonant cavities (LNE-Cnam, missing) 4.Measurement of saturation vapour pressure of pure water in the temperature range between -90 °C and +100 °C (LNE-Cnam, missing) 5.Construction of a prototype acoustic interferometer air temperature sensor. 6.Processing strategies to derive the atmospheric water vapour content by Global Navigation Satellite Systems. 7.Construction of a reference radiation shield for automatic wheatear stations (AWS). 8.Manufacturing of a transportable calibration facility for AWS . 9.Collection of representative weather station and assessment of the needing of software validation of data-logger used. 10.Metrology for meteorology in agricultural sites 11.Development of a data base of historical temperature data series. 12.Harmonising and combining metrological and homogenisation approaches to develop historical temperature time-seriesI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
