Gisèle Krysztofiak

Climatology-based chemical tropopauses from global O3 and N2O observations since 198

Sophie Bauchinger, Andreas Engel, Andreas Zahn, Harald Bönisch et autres

Long-term global trace gas observations can be used to define chemical tropopauses, which are not limited by the availability or resolution of vertical profiles or reanalysis data sets. Tracers that can be used for these definitions need to show clearly defined differences …

de, fr (code pays fourni par la source)

Remote sensing of water vapour in the atmospheric column using laser heterodyne radiometer

Aditya Saxena, Marie Thérèse El Kattar, Tingting Wei, Mélanie Ghysels et autres

Measurements of greenhouse gases (GHGs) in the atmospheric column are crucial because column-averaged mixing ratio integrate concentrations over the full vertical extent of the atmosphere, making them far less sensitive to local mixing and transport errors than surface in situ measurements. Water …

fr (code pays fourni par la source)

Organics in the stratosphere: new insights from weather balloon flights conducted in France

Roland G. Benoit, Hazel Vernier, Jean‐Paul Vernier, Lilian Joly et autres

Atmospheric aerosols significantly influence the Earth’s climate, yet they remain a major source of uncertainty in climate projections. Here, we present a set of unique offline analysis of organics collected from the ground to the stratosphere with ultimate sensitivity using a new …

fr, us (code pays fourni par la source)

Characterization of aerosol optical depth (AOD) anomalies in September and October 2022 over Skukuza in South Africa

Marion Ranaivombola, Nelson Bègue, Lucas Vaz Peres, Farahnaz Fazel‐Rastgar et autres

Most major field campaigns, such as the Southern Africa Fire Atmosphere Research Initiative (SAFARI-92 and SAFARI-2000) and AErosol, RadiatiOn and CLOuds in southern Africa (AEROCLO-sA), have focused on the west coast of southern Africa, leaving the east coast underexplored. To address this, …

fr, Maroc, re, Afrique du Sud (code pays fourni par la source)

An Intensive Biomass Burning Aerosol Observation phase in 2022, over Skukuza, South Africa: CO transport and balance over Southern Africa

Marion Ranaivombola, Nelson Bègue, Gisèle Krysztofiak, Lucas Vaz Peres et autres

The Biomass Burning Aerosol Campaign (BiBAC) was conducted in the Kruger National Park (KNP), at Skukuza in South Africa during the 2022 biomass burning season. The campaign included an Intensive Observation Phase (IOP) from September to October, aiming to quantify aerosol optical …

fr, re, br, Afrique du Sud (code pays fourni par la source)

Evidence of a dual African and Australian biomass burning influence on the vertical distribution of aerosol and carbon monoxide over the southwest Indian Ocean basin in early 2020

Nelson Bègue, Alexandre Baron, Gisèle Krysztofiak, Gwenaël Berthet et autres

During the 2020 austral summer, the pristine atmosphere of the southwest Indian Ocean (SWIO) basin experienced significant perturbations. This study examines the variability of aerosols and carbon monoxide (CO) over this remote oceanic region and investigates the underlying processes in the upper …

fr, re, us, de, no, be, jp, nz (code pays fourni par la source)

Identification of instrumental artifacts in terpene detection: field studies and follow-up chamber campaign ACROSS-HECTIC

Fanny Bachelier, Max R. McGillen, R. Veyrat, Benoît Grosselin et autres

International audience

Characterization of AOD anomalies in September and October 2022 over Skukuza in South Africa

Marion Ranaivombola, Nelson Bègue, Farahnaz Fazel‐Rastgar, Venkataraman Sivakumar et autres

Abstract. This case study presents the evolution of aerosol optical properties during Intensive Observational Period (IOP) of the Biomass Burning Aerosol Campaign (BiBAC) in the Kruger National Park at Skukuza, between 18 and 23 September (Event 1) and 9 and 17 October …

fr, re, Afrique du Sud (code pays fourni par la source)

A database of aircraft measurements of carbon monoxide (CO) with high temporal and spatial resolution during 2011–2021

Chaoyang Xue, Gisèle Krysztofiak, Vanessa Brocchi, Stéphane Chevrier et autres

To understand tropospheric air pollution at regional and global scales, the SPIRIT (SPectromètre Infra-Rouge In situ Toute altitude) airborne instrument was developed and used on aircraft to measure volume mixing ratios of carbon monoxide (CO), an important indicator of air pollution, during …

fr (code pays fourni par la source)

Evidence of a dual African and Australian biomass burning influence on the vertical distribution of aerosol and carbon monoxide over the Southwest Indian Ocean basin in early 2020

Nelson Bègue, Alexandre Baron, Gisèle Krysztofiak, Gwenaël Berthet et autres

Abstract. The pristine atmosphere of the southwest Indian Ocean (SWIO) basin underwent significant perturbations during the 2020 austral summer. This study documents the complex variability of aerosols and carbon monoxide (CO) over this remote oceanic region and identifies the processes governing it …

fr, re, us, Afrique du Sud, be, jp, nz (code pays fourni par la source)

Supplementary material to "A Database of Aircraft Measurements of Carbon Monoxide (CO) with High Temporal and Spatial Resolution during 2011–2021"

Chaoyang Xue, Gisèle Krysztofiak, Vanessa Brocchi, Stéphane Chevrier et autres

fr (code pays fourni par la source)

A Database of Aircraft Measurements of Carbon Monoxide (CO) with High Temporal and Spatial Resolution during 2011–2021

Chaoyang Xue, Gisèle Krysztofiak, Vanessa Brocchi, Stéphane Chevrier et autres

Abstract. To understand tropospheric air pollution at regional and global scales, the SPIRIT airborne instrument (SPectromètre Infra-Rouge In situ Toute altitude) was developed and used on aircraft to measure volume mixing ratios of carbon monoxide (CO), an important indicator of air pollution, …

fr (code pays fourni par la source)