Statistical analysis of contrail to cirrus evolution during the Contrail and Cirrus Experiment (CONCERT)

Chauvigné, Aurélien; Jourdan, Olivier; Schwarzenböeck, Alfons; Gourbeyre, Christophe; Gayet, J.-F.; Voigt, Christiane; Schläger, Hans; Kaufmann, Stefan H. E.; Borrmann, Stephan; Molleker, Sergej; Minikin, Andreas; Jurkat, Tina; Schumann, U.

doi:10.5194/acp-18-9803-2018

Cited by 20 publications

(29 citation statements)

References 89 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measured angular scattering functions are flat and featureless. Studies with optical particle models (Doutriaux-Boucher et al, 2000;C-Labonnote et al, 2001;Baum et al, 2010;Jourdan et al, 2010;Yang et al, 2013;Liu et al, 2014a, b;Letu et al, 2016;Tang et al, 2017) show that the flattening of the angular scattering function at the sideward angles can be reproduced by ice particles with a high degree of crystal complexity, which is in accordance with our observations. More importantly, the ensemble angular scattering functions at both solar wavelengths are almost identical irrespective of the geographical location.…”

Section: Measurements Of the Angular Scattering Functionsupporting

confidence: 91%

“…Field measurements of ice crystal mesoscopic complexity were taken between 2011 and 2017 in the Mid-latitude Airborne Cirrus Properties Experiment (MACPEX) (Jensen et al, 2013), the Mid Latitude Cirrus (ML-CIRRUS) campaign (Voigt et al, 2017), the Aerosol, Cloud, Precipitation, and Radiation Interactions and Dynamics of Convective Cloud Systems Cloud processes of the main precipitation systems in Brazil: A contribution to cloud resolving modeling and to the GPM (GlobAl Precipitation Measurement) (ACRIDICON-CHUVA) campaign (Wendisch et al, 2016), the Radiation-Aerosol-Cloud Experiment in the Arctic Circle (RACEPAC) campaign (Costa et al, 2017) and the Arctic CLoud Observations Using airborne measurements during polar Day (ACLOUD) campaign (Wendisch et al, 2018). The field measurements of angular scattering functions were taken between 1998 and 2017 in the Interhemispheric Dif-ferences in Cirrus Properties from Anthropogenic Emissions (INCA) project (Shcherbakov et al, 2005), the midlatitude campaign CIRRUS'98 (Jourdan et al, 2003), the Arctic Study on Tropospheric Aerosol and Radiation (ASTAR) campaign (Jourdan et al, 2010), the Contrail and Cirrus Experiments (CONCERT) 1 and 2 (Chauvigné et al, 2018), the tropical campaign ACRIDICON-CHUVA, the Airborne Research Instrumentation Testing Opportunity (ARISTO2017), the Arctic campaign ACLOUD and, the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study (SOCRATES).…”

Section: Sampled Clouds and Definitionsmentioning

confidence: 99%

See 1 more Smart Citation

Additional global climate cooling by clouds due to ice crystal complexity

Järvinen

Jourdan²,

Neubauer³

et al. 2018

Atmos. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

Abstract. Ice crystal submicron structures have a large impact on the optical properties of cirrus clouds and consequently on their radiative effect. Although there is growing evidence that atmospheric ice crystals are rarely pristine, direct in situ observations of the degree of ice crystal complexity are largely missing. Here we show a comprehensive in situ data set of ice crystal complexity coupled with measurements of the cloud angular scattering functions collected during a number of observational airborne campaigns at diverse geographical locations. Our results demonstrate that an overwhelming fraction (between 61 % and 81 %) of atmospheric ice crystals sampled in the different regions contain mesoscopic deformations and, as a consequence, a similar flat and featureless angular scattering function is observed. A comparison between the measurements and a database of optical particle properties showed that severely roughened hexagonal aggregates optimally represent the measurements in the observed angular range. Based on this optical model, a new parameterization of the cloud bulk asymmetry factor was introduced and its effects were tested in a global climate model. The modelling results suggest that, due to ice crystal complexity, ice-containing clouds can induce an additional short-wave cooling effect of −1.12 W m2 on the top-of-the-atmosphere radiative budget that has not yet been considered.

show abstract

Section: Measurements Of the Angular Scattering Functionsupporting

confidence: 91%

Section: Sampled Clouds and Definitionsmentioning

confidence: 99%

Additional global climate cooling by clouds due to ice crystal complexity

Järvinen

Jourdan²,

Neubauer³

et al. 2018

Atmos. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The instrument was mounted next to the CO 2 inlet on the upper side of the DC-8 fuselage. The probe has been previously used for contrail measurements (Voigt et al, 2010(Voigt et al, , 2011Gayet et al, 2012;Chauvigné et al, 2018), and its electronics received an update in 2017, such that the recording of single-particle data is possible. The sampling area of 0.19 mm 2 was determined by laboratory calibrations, and the instrument was size-calibrated on the basis of a Tmatrix calculation for an ice particle aspect ratio of 0.5 (Borrmann et al, 2000;Luo et al, 2003;Rosenberg et al, 2012).…”

Section: Particle and Trace Gas Measurementsmentioning

confidence: 99%

“…Kleine et al (2018) assessed the sublimation effects with data of the ECLIF I experiment and showed that both soot and ice particle number concentrations are a function of the position behind and below the contrailing aircraft. An overview of contrail observations has been compiled by , and microphysical data on aged contrail cirrus have been analysed by Voigt et al (2017) and Chauvigné et al (2018).…”

Section: Introductionmentioning

confidence: 99%

Reduced ice number concentrations in contrails from low-aromatic biofuel blends

et al. 2021

Self Cite

View full text Add to dashboard Cite

Abstract. Sustainable aviation fuels can reduce contrail ice numbers and radiative forcing by contrail cirrus. We measured apparent ice emission indices for fuels with varying aromatic content at altitude ranges of 9.1–9.8 and 11.4–11.6 km. Measurement data were collected during the ECLIF II/NDMAX flight experiment in January 2018. The fuels varied in both aromatic quantity and type. Between a sustainable aviation fuel blend and a reference fuel Jet A-1, a maximum reduction in apparent ice emission indices of 40 % was found. We show vertical ice number and extinction distributions for three different fuels and calculate representative contrail optical depths. Optical depths of contrails (0.5–3 min in age) were reduced by 40 % to 52 % for a sustainable aviation fuel compared to the reference fuel. Our measurements suggest that sustainable aviation fuels result in reduced ice particle numbers, extinction coefficients, optical depth and climate impact from contrails.

show abstract

“…The instrument was mounted next to the CO 2 inlet on the upper side of the DC-8 fuselage. The probe has been previously used for contrail measurements during multiple recent studies (Chauvigné et al, 2018;Gayet et al, 2012;Voigt et al, 2010Voigt et al, , 2011, and its electronics received an update in 2017, such that the recording of single particle data is possible. The sampling area of 0.19 mm 2 was determined by laboratory calibrations and the instrument was size-calibrated on the basis of a T-Matrix calculation for an ice particle aspect ratio of 0.5 (Borrmann et al, 2000;Luo et al, 2003;Rosenberg et al, 2012).…”

Section: Particle and Trace Gas Measurementsmentioning

confidence: 99%

Reduced ice number concentrations in contrails from low aromatic biofuel blends

Bräuer

Voigt

Sauer

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Abstract. Sustainable aviation fuels can reduce contrail ice numbers and radiative forcing by contrail cirrus. We measured apparent ice emission indices for fuels with varying aromatic content at altitude ranges of 9.1–9.8 km and 11.4–11.6 km. Measurement data were collected during the ECLIF II/NDMAX flight experiment in January 2018. The fuels varied in both aromatic quantity and type. Between a sustainable aviation fuel blend and a reference fuel Jet A-1, a maximum reduction in apparent ice emission indices of 40 % was found. We show vertical ice number and extinction distributions for three different fuels and calculate representative contrail optical depths. Optical depths of contrails (0.5–3 minutes in age) were reduced by 40 to 52 % for a sustainable aviation fuel compared to the reference fuel. Our measurements suggest that sustainable aviation fuels result in reduced ice particle numbers, extinction coefficients, optical depth and climate impact from contrails.

show abstract

Statistical analysis of contrail to cirrus evolution during the Contrail and Cirrus Experiment (CONCERT)

Abstract: Abstract. Air traffic affects cloudiness, and thus climate, by emitting exhaust gases and particles.

Cited by 20 publications

References 89 publications

Additional global climate cooling by clouds due to ice crystal complexity

Additional global climate cooling by clouds due to ice crystal complexity

Reduced ice number concentrations in contrails from low-aromatic biofuel blends

Reduced ice number concentrations in contrails from low aromatic biofuel blends

Contact Info

Product

Resources

About