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Bertrand Calpini

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Publications associées (43)

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Assessment of real-time bioaerosol particle counters using reference chamber experiments

Bertrand Calpini, Benoît Crouzy, Alireza Moallemi, Eric Sauvageat, Konstantina Vasilatou

This study presents the first reference calibrations of three commercially available bioaerosol detectors. The Droplet Measurement Technologies WIBS-NEO (new version of the wideband integrated bioaerosol spectrometer), Plair Rapid-E, and Swisens Poleno wer ...

2022

Raman lidar in operational meteorology

Bertrand Calpini, Valentin Simeonov, Ilya Serikov, Todor Dinoev

Water vapor and temperature spatial distribution and their temporal evolution are among the most important parameters in numerical weather forecasting and climate models. The operational relative humidity/temperature profiling in meteorology is carried out ...

SPIE-INT SOC OPTICAL ENGINEERING2018

Instrumental correction of the uneven PMT aging effect on the calibration constant of a water vapor Raman lidar

Bertrand Calpini, Valentin Simeonov, Salomon Fastig

The water vapor profile derived from Raman lidar measurements is obtained by taking the ratio of water vapor and nitrogen Raman-shifted signals. The proportionality factor that converts the signal ratio to water vapor/air mixing ratio is referred to as lid ...

Spie-Int Soc Optical Engineering2014

Raman Lidar for Meteorological Observations, RALMO - Part 1: Instrument description

Hubert van den Bergh, Bertrand Calpini, Valentin Simeonov, Marc Parlange, Pablo Roberto Ristori, Todor Dinoev

A new Raman lidar for unattended, round-the-clock measurement of vertical water vapor profiles for operational use by the MeteoSwiss has been developed during the past years by the Swiss Federal Institute of Technology, Lausanne. The lidar uses narrow fiel ...

European Geosciences Union2013

Raman Lidar for Meteorological Observations, RALMO - Part 2: Validation of water vapor measurements

Bertrand Calpini, Valentin Simeonov

The Raman Lidar for Meteorological Observations (RALMO) was installed at the MeteoSwiss Regional Center of Payerne, Switzerland, in summer 2008. One of its aims is to provide continuous vertical profiles of tropospheric water vapor during day and night at ...

European Geosciences Union2013

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Water vapour has been measured from the International Scientific Station Jungfraujoch (ISSJ, 47° N, 7° E, 3580 in above sea level) during the winters of 1999/2000 and 2000/2001 by microwave radiometry and Raman lidar. The abundance of atmospheric water vap ...

Copernicus Publications2004

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We report direct absorption spectroscopic detection of ozone at ambient pressure with a pulsed, DFB quantum-cascade laser (QCL) tuned within 1044-1050 cm(-1) by temperature scanning. Wavelength calibration curves were derived from FTIR and CO2 spectra and ...

Springer-Verlag2004

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An unusual elevated atmospheric boundary layer (ABL) at altitudes of Lip to 5000 m was observed, using a combination of elastic and water vapor lidars, during a 10-day period in 2003. There was a persistent stationary anticyclonic regime over Western Europ ...

Esa Publications Division2004

An investigation of ozone and planetary boundary layer dynamics over the complex topography of Grenoble combining measurements and modeling

Hubert van den Bergh, Bertrand Calpini, Valentin Simeonov, Ioan Balin, Olivier Couach, Pablo Roberto Ristori

This paper concerns an evaluation of ozone (O-3) and planetary boundary layer (PBL) dynamics over the complex topography of the Grenoble region through a combination of measurements and mesoscale model (METPHOMOD) predictions for three days, during July 19 ...

Copernicus Publications2003

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The Grenoble metropolitan area located in the French Alps with more than 400 thousand inhabitants suffers from periods of high ozone (O3) concns. in summertime. Grenoble is moreover located in the Y shaped convergence of three deep valleys with surrounding ...

2002