6533b82dfe1ef96bd1291f84
RESEARCH PRODUCT
In Situ Observations of Ice Particle Losses in a Young Persistent Contrail
Christiane VoigtChristiane VoigtJ. KleineBruce E. AndersonTina Jurkat-witschasDaniel SauerMonika ScheibeBernd KärcherStefan H. E. KaufmannHans Schlagersubject
In situ010504 meteorology & atmospheric sciencesParticle numbercontrailsiceAtmosphärische Spurenstoffe010501 environmental sciencesin-situ measurementsmedicine.disease_causeAtmospheric sciencessoot01 natural sciencesSootVortexGeophysicsClimate impactmedicinevortex PhaseGeneral Earth and Planetary SciencesEnvironmental scienceSublimation (phase transition)CirrusWolkenphysikSoot particles0105 earth and related environmental sciencesdescription
We describe results of in situ observations of a 1 to 2-min old contrail in the vortex Phase generated from soot-rich exhaust (> 10^15 emitted soot particles per kg-fuel burned). Simultaneous measurements of soot (EIsoot) and apparent ice (AEIice) particle number emission indices show a pronounced anti-correlation in the vertical contrail profile. AEIice decrease by about 75% with increasing distance below the contrail-producing aircraft,while EIsoot increase by an equivalent relative fraction, therefore strongly suggesting sublimation causing the ice particle losses. Quantifying these losses in measurements helps to validate and improve contrail parameterizations used to estimate the climate Impact of contrails and contrail cirrus.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-12-28 | Geophysical Research Letters |