A5049881383- Calibration and Measurement Techniques
- Scientific Measurement and Uncertainty Evaluation
- Advanced Sensor Technologies Research
- Meteorological Phenomena and Simulations
- Atmospheric Ozone and Climate
- Cryospheric studies and observations
- Spectroscopy and Laser Applications
- Climate change and permafrost
- Atmospheric aerosols and clouds
- Climate variability and models
- Arctic and Antarctic ice dynamics
- Heat Transfer and Boiling Studies
- Sensor Technology and Measurement Systems
- Laser Design and Applications
- Precipitation Measurement and Analysis
- Air Quality Monitoring and Forecasting
- Urban Heat Island Mitigation
- Landslides and related hazards
- Chemical Thermodynamics and Molecular Structure
- Atmospheric and Environmental Gas Dynamics
- Solar Radiation and Photovoltaics
- Advanced Thermodynamics and Statistical Mechanics
- Smart Materials for Construction
- Flow Measurement and Analysis
- Plant Surface Properties and Treatments
Istituto Nazionale di Ricerca Metrologica
2015-2024
National Research Council
2018-2024
All-Russian research Institute of metrological service
2023
Research Institute for Geo-Hydrological Protection
2020-2022
Institute of Atmospheric Sciences and Climate
2018
Abstract It has been a decade since changes in diurnal temperature range (DTR) globally have assessed stand‐alone data analysis. The present study takes advantage of substantively improved basic holdings arising from the International Surface Temperature Initiative's databank effort and applies National Centers for Environmental Information's automated pairwise homogeneity assessment algorithm to reassess DTR records. is found that breakpoints are more prevalent than other elements resulting...
This paper describes the metrological procedure carried out for evaluation of building influence on air temperature measurements. aims to produce reliable conclusions, information, and data contribute WMO siting classification schemes For this purpose, a field experiment was designed, deployed, out. As result, one-year-lasting measurements were collected analyzed. In experiment, 200 m wide is unique artificial heat source object projecting shades over flat surface (no discernible slope) in...
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...
We report on a new implementation of Doppler broadening thermometry based precision absorption spectroscopy by means pair offset-frequency locked extended-cavity diode lasers at 1.39 μm. The method consists in the highly accurate observation shape 4(4,1)→4(4,0) line H2(18)O ν1+ν3 band, water vapor sample thermodynamic equilibrium. A sophisticated and extremely refined spectral analysis procedure is adopted for retrieval width as function gas pressure, taking into account Dicke narrowing...
Abstract A World Meteorological Organization (WMO) committee officially evaluated temperature record extremes of 54.0°C at two locations, one in Mitribah, Kuwait on July 21, 2016 and a second Turbat, Pakistan May 28, 2017. The agreed that quantity quality documentation both observations were excellent. Additional metrological testing the equipment focused three aspects: calibration thermometers, an effort to estimate factors influencing measurements direct comparison thermometers when...
We have measured the differences between Kelvin thermodynamic temperature and of International Temperature Scale 1990 on nine isotherms triple point mercury 380 K, by means a primary acoustic thermometer. For present measurements standard uncertainty (T − T90) ranges from 0.9 mK at 234 K to 1.7 K. The experimental method is based measurement resonance frequencies an argon-filled spherical cavity microwave same when evacuated. results agree within remarkably small combined uncertainties with...
We report on a new optical implementation of primary gas thermometry based laser-absorption spectrometry in the near infrared. The method consists retrieving Doppler broadening from highly accurate observations line shape $R(12)$ ${\ensuremath{\nu}}_{1}+2{\ensuremath{\nu}}_{2}^{0}+{\ensuremath{\nu}}_{3}$ transition ${\mathrm{CO}}_{2}$ at thermodynamic equilibrium. width measurements as function temperature, ranging between triple point water and gallium melting point, allowed for...
Launched in 2011 within the European Metrology Research Programme (EMRP) of EURAMET, joint research project "MeteoMet -Metrology for Meteorologyis
We report on acoustic and microwave measurements made with a purified helium sample maintained close to single thermodynamic state (Texp ∼ 273.16 K, pexp 410 kPa) within 2.1 L volume stainless steel spherical cavity. From these ab initio calculations of the non-ideality refractive index helium, we determine value for Boltzmann constant kB which is consistent recommended 2006 CODATA value: (kB − k2006)/k2006 = (−7.5 ± 7.5) × 10−6. discuss current limits experiment prospects further reduction...
There is overwhelming evidence that the climate system has warmed since instigation of instrumental meteorological observations. The Fifth Assessment Report Intergovernmental Panel on Climate Change concluded for warming was unequivocal. However, owing to imperfect measurements and ubiquitous changes in measurement networks techniques, there remain uncertainties many details these historical changes. These do not call into question trend or overall magnitude global system. Rather, they act...
Abstract Reliable and accurate environmental sensing is a cornerstone of modern meteorology. This paper presents laboratory simulator capable reproducing extreme environments performing tests calibrations meteorological sensor systems under controlled conditions. facility available to the research community as well industry intended encourage advancement in field metrology applied meteorology climatology. Discussion will be made temperature, pressure, humidity wind flow control, with...
Abstract Rockfalls are one of the most common instability processes in high mountains. They represent a relevant issue, both for risks they (infra) structures and frequentation, their potential role as terrestrial indicators climate change. This study aims to contribute growing topic relationship between change slope at basin scale. The selected area is Bessanese glacial (Western Italian Alps) which, since 2016, has been specifically equipped, monitored investigated this purpose. In order...
Abstract Solar radiation screens play a key role in automatic weather stations ( AWS ) performances. In this work, screen ageing effects on temperature measurements are examined. Paired observations, traceable to national standards and with well‐defined uncertainty budget, were performed employing two naturally ventilated equipped identical sensors different only for their working time. Three tests carried out aged AWSs : 5‐year‐old AWS5 was compared new device AWS0 ), 1 year old AWS1 both 3...
We report on complementary tests and measurements regarding our recent determination of the Boltzmann constant, kB, by means Doppler broadening thermometry, also providing additional information as compared to previous articles. A revised uncertainty budget is illustrated, including some new components that were ignored in spectroscopic experiments, better quantifying other estimated be negligible. In particular, we consider relativistic effect, perturbation caused finite bandwidth detection...
Abstract. This paper describes the Global Climate Observing System (GCOS) Reference Upper-Air Network (GRUAN) approach to managing transition from Vaisala RS92 RS41 as operational radiosonde. The goal of GRUAN is provide long-term high-quality reference observations upper-air essential climate variables (ECVs) such temperature and water vapor. With data being used for monitoring, it vital that change measurement system does not introduce inhomogeneities record. majority 27 sites were...
Among the many effects influencing accuracy in near‐surface air temperature measurements ( t ), solar radiation plays a key role. While numerous technical solutions have been developed to protect sensors from direct radiation, few studies are available evaluate warming due reflected radiation. Changes surface albedo influence measurement results of and, case positioned above snow‐covered surface, this effect is amplified larger amount reflected. As task European project MeteoMet, design for...
Abstract With the purpose of revising World Meteorological Organization's Commission for Instruments and Methods Observation (WMO/CIMO) Guide #8 on weather stations siting, an experiment to evaluate metrologically maximum influence a paved road 2‐m air temperature measurements (“road siting effect”) has been designed, installed run in Italy. It consists 100‐m long array seven measurement stations, at increasing distances from local road, equipped with shielded Pt100 thermometers ancillary...