A5070456838- Scientific Measurement and Uncertainty Evaluation
- Calibration and Measurement Techniques
- Advanced Sensor Technologies Research
- Flow Measurement and Analysis
- Meteorological Phenomena and Simulations
- Sensor Technology and Measurement Systems
- Heat Transfer and Optimization
- Spectroscopy and Laser Applications
- Chemical Thermodynamics and Molecular Structure
- Heat Transfer and Boiling Studies
- Building Energy and Comfort Optimization
- Advanced Electrical Measurement Techniques
- Vehicle emissions and performance
- Microwave and Dielectric Measurement Techniques
- Radiative Heat Transfer Studies
- Atmospheric Ozone and Climate
- Acoustic Wave Resonator Technologies
- Thermal Radiation and Cooling Technologies
- Wood Treatment and Properties
- Greenhouse Technology and Climate Control
- Air Quality Monitoring and Forecasting
- Atmospheric chemistry and aerosols
- Climate variability and models
- Intravenous Infusion Technology and Safety
- Analytical Chemistry and Sensors
National metrology institute VTT MIKES
2011-2024
VTT Technical Research Centre of Finland
2015-2019
Centre Technique des Industries Aérauliques et Thermiques
1996
ABSTRACT The study describes significant outcomes of the ‘Metrology for Meteorology’ project, MeteoMet , which is an attempt to bridge meteorological and metrological communities. concept traceability, idea used in both fields but with a subtle difference meaning, at heart project. For meteorology, traceable measurement one that can be traced back particular instrument, time location. From perspective, traceability further implies primary realization quantity being measured terms base units...
Launched in 2011 within the European Metrology Research Programme (EMRP) of EURAMET, joint research project "MeteoMet -Metrology for Meteorologyis
Water in its three ambient phases plays the central thermodynamic role terrestrial climate system. Clouds control Earth's radiation balance, atmospheric water vapour is strongest 'greenhouse' gas, and non-equilibrium relative humidity at air–sea interface drives evaporation latent heat export from ocean. On climatic time scales, melting ice caps regional deviations of hydrological cycle result changes seawater salinity, which turn may modify global circulation oceans their ability to store...
Methods and technologies for dynamic measurements have been developed used decades. To enable robust metrological traceability, uncertainty analysis methods various applications derived published by many scientists. In Europe, several research projects funded within European metrology programmes (EMRP, EMPIR, Partnership on Metrology) focusing in of mechanical, thermal electrical quantities to provide new measurement calibration methods. The Metrology Network “Mathmet” drives the development...
Water in its three ambient phases plays the central thermodynamic role terrestrial climate system. Clouds control Earth's radiation balance, atmospheric water vapour is strongest 'greenhouse' gas, and non-equilibrium relative humidity at air–sea interface drives evaporation latent heat export from ocean. In this paper, we examine climatologically relevant humidity, noting fundamental deficiencies definition of key observable. The metrological history quantity reviewed, problems with current...
In this paper we present the development of a primary standard for dynamic pressures that is based on drop weight method. At moment pressure transducers are typically calibrated using reference transducers, which against static standards. Because and characteristics may significantly differ from each other, it important these method developed in VTT Technical Research Centre Finland Ltd, Metrology MIKES, pulse generated by impact between dropping piston liquid-filled piston-cylinder...
The concentration of nanometre-sized particles is frequently measured in terms particle number using well-established measuring instruments, e.g. condensation counters. Traceability for these measurements can be achieved by means calibrations an aerosol electrometer (AE) as a reference. A national metrology institutes (NMIs) and expert laboratories provide such calibrations, but the metrological basis at present not well established because equivalence between unit realizations has been...
Interest in the precise measurement of water vapour upper-air is growing along with consciousness climate change. Because better knowledge high altitude humidity levels improves accuracy models and weather forecasts, Global Climate Observing System (GCOS) putting more effort into quality these measurements. The GCOS established Reference Upper-Air Network (GRUAN) set requirements for its measurements traceability to International Units (SI). To fulfil requirements, improved radiosondes...
Main text This is a report to the Technical Committee for Thermometry of EURAMET (EURAMET TC-T) on regional key comparison EURAMET.T-K9 SPRT calibration International Temperature Scale 1990 (ITS-90), from 83.8058 K (the Ar triple point) 692.677 Zn fixed point). The transfer standards used are long-stem SPRTs. an RMO linked CIPM CCT-K9. organized in five separate collapsed Stars, each one having CCT-K9 participant as pilot, which provides link KCRV Four participating laboratories involved...
Measurement of nanometre-sized aerosol particles is based on particle number concentration measurements. The commonly used method for providing traceability these measurements involves charging and electrical counting particles. This requires that the are singly charged or average charge exactly known, neither which easy to ensure. In device called a single reference (SCAR), fraction multiply minimal due novel operating principle subsequent growth. this study SCAR was validated as primary...
The filter artifact is a significant source of error in gravimetric measurements particulate matter (PM) exhaust. However, only few studies on the subject exist. Results from these show large discrepancy mainly because experiments were performed using real diesel vehicle exhaust with varying composition. In this study, setup for mixing diesel-like soot and hydrocarbon vapor was constructed generating stable aerosol adjustable particle size distribution diesel-fueled generator (GMD [geometric...
A new International System (SI) traceable calibration set-up for reference radiosondes is presented here with a preliminary uncertainty analysis. By meeting the GRUAN requirements, this development...
The first humidity CIPM key comparison, CCT-K6, will be completed in 2010. corresponding European regional EUROMET.T-K6, was carried out 2004 to 2008. National metrology institutes from 24 countries participated the comparison. comparison covered dew-point temperature range −50 °C +20 °C. It organized as three parallel loops with two specially manufactured precision chilled mirror hygrometers transfer standards each loop. scheme designed ensure high quality results evenly spread workload for...
Generator systems realizing a dew-point temperature scale were compared using chilled-mirror hygrometer. The comparison was carried out by the laboratories maintaining national standards for humidity in Denmark, Finland, Poland, Russian Federation, Switzerland, Turkey and United Kingdom. Centre Metrology Accreditation (MIKES, Finland) co-ordinated project acted as pilot laboratory. several sub-loops to produce information about stability of transfer standard. To analyse results, reference...
Due to their operation principle atomic force microscopes (AFMs) are sensitive all factors affecting the detected between probe and sample. Relative humidity is an important often neglected—both in experiments simulations—factor interaction AFM sample air. This paper describes control system designed built for interferometrically traceable metrology (IT-MAFM) at VTT MIKES. The based on circulating air of enclosure via dryer humidifier paths with adjustable flow mixing ratio dry humid design...
Climate change and its consequences require immediate actions in order to safeguard the environment economy Europe rest of world. Aiming enhance data reliability reduce uncertainties climate observations, a joint research project called "MeteoMet - Metrology for Meteorology" started October 2011 coordinated by Italian Istituto Nazionale di Ricerca Metrologica (INRiM). The is focused on traceability measurements involved change: surface upper air temperature, pressure, humidity, wind speed...