H
H. Venzac
Researcher at Blaise Pascal University
Publications - 12
Citations - 1372
H. Venzac is an academic researcher from Blaise Pascal University. The author has contributed to research in topics: Aerosol & Nucleation. The author has an hindex of 8, co-authored 12 publications receiving 1220 citations.
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Journal ArticleDOI
Mobility particle size spectrometers: harmonization of technical standards and data structure to facilitate high quality long-term observations of atmospheric particle number size distributions
Alfred Wiedensohler,Wolfram Birmili,Andreas Nowak,A. Sonntag,Kay Weinhold,Maik Merkel,Birgit Wehner,Thomas Tuch,Sascha Pfeifer,Markus Fiebig,A. M. Fjäraa,Eija Asmi,Karine Sellegri,R. Depuy,H. Venzac,P. Villani,Paolo Laj,Pasi Aalto,John A. Ogren,Erik Swietlicki,Paul I. Williams,Pontus Roldin,Paul Quincey,Christoph Hüglin,R. Fierz-Schmidhauser,Martin Gysel,Ernest Weingartner,Francesco Riccobono,Sebastiao Martins Dos Santos,C. Grüning,K.H. Faloon,David C. S. Beddows,Roy M. Harrison,Ciaran Monahan,S. G. Jennings,Colin D. O'Dowd,A. Marinoni,Hans-Georg Horn,L. Keck,Jingkun Jiang,Jacob H. Scheckman,Peter H. McMurry,Zhaoze Deng,Chunsheng Zhao,M. Moerman,Bas Henzing,G. de Leeuw,G. de Leeuw,G. Löschau,Susanne Bastian +49 more
TL;DR: In this article, the authors compared commercial and custom-made inversion routines to calculate the particle number size distributions from the measured electrical mobility distribution, and concluded that the consistency of these reference instruments to the total particle number concentration was less than 5%.
Journal ArticleDOI
High frequency new particle formation in the Himalayas
H. Venzac,Karine Sellegri,Paolo Laj,P. Villani,Paolo Bonasoni,Angela Marinoni,Paolo Cristofanelli,Francescopiero Calzolari,Sandro Fuzzi,Stefano Decesari,Maria-Cristina Facchini,Elisa Vuillermoz,Gian Pietro Verza +12 more
TL;DR: The first evidence of very frequent new particle formation events occurring up to high altitudes is presented and ion clusters rapidly grew to a 10-nm size within a few hours, confirming, thus, that in situ nucleation takes place up tohigh altitudes.
Journal ArticleDOI
Seasonal variation of aerosol size distributions in the free troposphere and residual layer at the puy de Dôme station, France
TL;DR: In this article, the authors investigated the diurnal and seasonal variability of the aerosol total number concentration and size distribution at the puy de Dome research station (France, 1465 m a.s.).
Journal ArticleDOI
The ABC-Pyramid Atmospheric Research Observatory in Himalaya for aerosol, ozone and halocarbon measurements.
Paolo Bonasoni,Paolo Laj,Federico Angelini,Jgor Arduini,U. Bonafè,Francescopiero Calzolari,Paolo Cristofanelli,Stefano Decesari,Maria Cristina Facchini,Sandro Fuzzi,Gian Paolo Gobbi,Michela Maione,Angela Marinoni,Andreas Petzold,F. Roccato,Jean-Claude Roger,Karine Sellegri,Michael Sprenger,H. Venzac,Gian Pietro Verza,P. Villani,Elisa Vuillermoz +21 more
TL;DR: These measurements provide data on the typical atmospheric composition of the Himalayan area between India and China and make investigations of the principal differences and similarities between the monsoon and pre-monsoon seasons possible.
Journal ArticleDOI
Tropospheric ozone variations at the Nepal Climate Observatory-Pyramid (Himalayas, 5079 m a.s.l.) and influence of deep stratospheric intrusion events
Paolo Cristofanelli,A. Bracci,A. Bracci,Michael Sprenger,Angela Marinoni,U. Bonafè,Francescopiero Calzolari,R. Duchi,Paolo Laj,J. M. Pichon,F. Roccato,H. Venzac,Elisa Vuillermoz,Paolo Bonasoni +13 more
TL;DR: In this paper, the authors presented the first 2 years of continuous surface ozone (O3) observations and systematic assessment of the influence of stratospheric intrusions (SI) at the Nepal Climate Observatory at Pyramid (NCO-P; 27°57' N, 86°48' E), located in the southern Himalayas at 5079 m a.s.