Arnaud Quérel

Reconstructing a european caesium 137 episode through inverse modelling (september 2024)

Hanane Bounouas, Arnaud Quérel, Valentin Pibernus, Olivier Masson et autres

International audience

Cesium-137 detection event in Europe, September 2024. A Chernobyl wildfire event ?

Arnaud Quérel, Valentin Pibernus, Hanane Bounouas, Thomas Henry-Lheureux et autres

International audience

Microphysical modelling of aerosol scavenging by different types of clouds: description and validation of the approach

Pascal Lemaître, Arnaud Quérel, Alexis Dépée, Alice Guerra Devigne et autres

With dry deposition and below-cloud scavenging, in-cloud scavenging is one of the three components of aerosol transfer from the atmosphere to the ground. There is no experimental validation of in-cloud particle scavenging models for all cloud types that is not impacted by …

fr, gb (code pays fourni par la source)

Impact of changing the wet deposition schemes in ldx on 137-cs atmosperic deposits after the fukushima accident

Arnaud Quérel, Denis Quélo, Yelva Roustan, Anne Mathieu et autres

The Fukushima-Daiichi release of radioactivity is a relevant event to study the atmospheric dispersion modelling of radionuclides. Actually, the atmospheric deposition onto the ground may be studied through the map of measured Cs-137 established consecutively to the accident. The limits of detection …

Burkina Faso, fr (code pays fourni par la source)

Comment on egusphere-2023-2105

Pascal Lemaître, Arnaud Quérel, Alexis Dépée, Alice Guerra Devigne et autres

Abstract. With dry deposition and below-cloud scavenging, in-cloud scavenging is one of the three components of aerosol transfer from the atmosphere to the ground. There is no experimental validation of in-cloud particle scavenging models for all cloud types that is not impacted …

fr (code pays fourni par la source)

Microphysical modelling of aerosol scavenging by different types of clouds. Description and validation of the approach

Pascal Lemaître, Arnaud Quérel, Alexis Dépée, Marie Monier et autres

Abstract. With dry deposition and below-cloud scavenging, in-cloud scavenging is one of the three components of aerosol transfer from the atmosphere to the ground. There is no experimental validation of in-cloud particle scavenging models for all cloud types that is not impacted …

fr (code pays fourni par la source)

Atmospheric transport modelling of radon-222 at European scale: description and validation against ICOS observations.

Arnaud Quérel, Tanina Hached, Denis Quélo, Michel Ramonet et autres

Atmospheric transport models used for nuclear emergency purposes are dedicated to simulating the atmospheric transport of radionuclides released from a damaged nuclear facility. The quality of this response is crucial and must be constantly improved. However, long-range measurement campaigns for validation are …

fr, se (code pays fourni par la source)

Third international challenge to model the medium- to long-range transport of radioxenon to four Comprehensive Nuclear-Test-Ban Treaty monitoring stations

C. Maurer, Stefano Galmarini, Efisio Solazzo, Jolanta Kuśmierczyk-Michulec et autres

In 2015 and 2016, atmospheric transport modeling challenges were conducted in the context of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) verification, however, with a more limited scope with respect to emission inventories, simulation period and number of relevant samples (i.e., those above the …

at, it, us, ca, se, gb, jp, vn, au, kr, fr (code pays fourni par la source)

Below-cloud scavenging of aerosol by rain: a review of numerical modelling approaches and sensitivity simulations with mineral dust in the Met Office's Unified Model

Anthony C. Jones, Adrian Hill, John Hemmings, Pascal Lemaître et autres

Theoretical models of the below-cloud scavenging (BCS) of aerosol by rain yield scavenging rates that are 1–2 orders of magnitude smaller than observations and associated empirical schemes for submicron-sized aerosol. Even when augmented with processes which may explain this disparity, such as …

gb, fr (code pays fourni par la source)

Statistical approach to assess radon-222 long-range atmospheric transport modelling and its associated gamma dose rate peaks

Arnaud Quérel, Khadija Meddouni, Denis Quélo, T. Doursout et autres

Abstract. There is a need for a validation framework for long-range atmospheric transport modelling dedicated to radionuclides. For distances greater than 50 km, the modelling of radionuclide deposition and ambient gamma dose rate evaluation are particularly difficult to validate, since it has …

fr (code pays fourni par la source)

Below-cloud scavenging of aerosol by rain: A review of numerical modelling approaches and sensitivity simulations with mineral dust

Anthony C. Jones, Adrian Hill, John Hemmings, Pascal Lemaître et autres

Abstract. Theoretical models of the below-cloud scavenging (BCS) of aerosol by rain yield scavenging rates that are 1–2 orders of magnitude smaller than observations and associated empirical schemes for submicron-sized aerosol. Even when augmented with processes which may explain this disparity, such …

gb, fr (code pays fourni par la source)

Supplementary material to "Below-cloud scavenging of aerosol by rain: A review of numerical modelling approaches and sensitivity simulations with mineral dust"

Anthony C. Jones, Adrian V. S. Hill, John Hemmings, Pascal Lemaître et autres