Drizzle Suppression in Ship Tracks.

  title={Drizzle Suppression in Ship Tracks.},
  author={Ronald J. Ferek and Timothy J. Garrett and Peter V. Hobbs and Scott R. Strader and D. W. Johnson and Jonathan P. Taylor and Kurt E. Nielsen and Andrew S. Ackerman and Yefim L. Kogan and Qingfu Liu and Bruce. A. Albrecht and David Malcolm Babb},
  journal={Journal of the Atmospheric Sciences},
Abstract Although drizzle was a relatively infrequent occurrence during the Monterey Area Ship Track study, diverse measurements from several sources produced data signals consistent with a reduction in drizzle drops in stratus clouds affected by ship effluents. Concurrent increases in liquid water in the cloud droplet size range, due to redistribution from the drizzle mode, were not always observed, possibly because of the relatively small and often negligible amounts of water in the drizzle… 

Observations of Drizzle in Nocturnal Marine Stratocumulus

Abstract In situ and radar data from the second field study of the Dynamics and Chemistry of Marine Stratocumulus (DYCOMS-II) have been used to study drizzle in stratocumulus. Measurements indicate

A Case Study of Ships Forming and Not Forming Tracks in Moderately Polluted Clouds

The effects of anthropogenic particulate emissions from ships on the radiative, microphysical, and chemical properties of moderately polluted marine stratiform clouds are examined. A case study of

Evidence for Natural Variability in Marine Stratocumulus Cloud Properties Due to Cloud-Aerosol

In this study, aircraft observations from the Interdisciplinary Remotely-Piloted Aircraft Studies (CIRPAS) Twin Otter are used to characterize the variability in drizzle, cloud, and aerosol

The impact of ship-produced aerosols on the microstructure and albedo of warm marine stratocumulus clouds: A test of MAST hypotheses 1i and 1ii

Anomalously high reflectivity tracks in stratus and stratocumulus sheets associated with ships (known as ship tracks) are commonly seen in visible and near-infrared satellite imagery. Until now there

Suppression of marina stratocumulus clouds due to reduced cloud condensation nuclei.

  • N. Smith
  • Environmental Science, Physics
  • 2000
Abstract : Cloud researchers have documented a variety of processes at work in the formation and dissipation of clouds in the marine boundary layer (MBL). Cloud rifts occasionally mark a distinct

Impact of ship emissions on the microphysical, optical and radiative properties of marine stratus: a case study

Modifications of existing clouds by the exhaust of ships are well-known but inadequately quantified impacts, which could contribute to climate change. The perturbation of a cloud layer by

On the presence of giant particles downwind of ships in the marine boundary layer

This study examines large oceangoing ships as a source of giant cloud condensation nuclei (Dp > 2 µm) due to wake and stack emissions off the California coast. Observed particle number concentrations

Effects of Additional Particles on Already Polluted Marine Stratus

AbstractThe response of already polluted marine stratocumulus to additional particles was examined by studying the clouds where two ship tracks cross. Nearly 100 such crossings were collected and

The Role of Background Cloud Microphysics in the Radiative Formation of Ship Tracks

The authors investigate the extent to which the contrast brightness of ship tracks, that is, the relative change in observed solar reflectance, in visible and near-infrared imagery can be explained

Effects of Aerosols on Cloud Albedo: Evaluation of Twomey's Parameterization of Cloud Susceptibility Using Measurements of Ship Tracks.

Abstract Airborne measurements from the Meteorological Research Flight’s Hercules C-130 and the University of Washington’s Convair C-131A during the Monterey Area Ship Track field project are used to



Measurements of ship‐induced tracks in clouds off the Washington coast

In situ cloud microphysical measurements are presented for two ship tracks detected off the Washington coast in three successive satellite images from the advanced very high resolution radiometer

Direct and Remote Sensing Observations of the Effects of Ships on Clouds

Simultaneous observations of two ship track signatures in stratus clouds from a satellite and in situ from an aircraft show that in the ship tracks the droplet sizes were reduced and total concentrations of both droplets and particles were substantially increased from those in adjacent clouds.

The impact of ship-produced aerosols on the microstructure and albedo of warm marine stratocumulus clouds: A test of MAST hypotheses 1i and 1ii

Anomalously high reflectivity tracks in stratus and stratocumulus sheets associated with ships (known as ship tracks) are commonly seen in visible and near-infrared satellite imagery. Until now there

Numerical modeling of ship tracks produced by injections of cloud condensation nuclei into marine stratiform clouds

Ship tracks are long-lived, linear regions of enhanced reflectivity in low-lying marine clouds that appear in satellite imagery downwind of ships. Ship tracks were first observed as cloud lines in

Microphysics of Marine Stratocumulus Clouds with Two Drizzle Modes

Abstract This observational study looks at the distribution of some cloud microphysical properties measured from the University of Washington's aircraft in mostly unbroken stratocumulus (Sc) clouds

The Measurement and Parameterization of Effective Radius of Droplets in Warm Stratocumulus Clouds

Abstract Observations from the Meteorological Research Flight's Hercules C-130 aircraft of the microphysical characteristics of warm stratocumulus clouds have been analyzed to investigate the

Effects of Aerosols on the Radiative Properties of Clouds

The influence of anthropogenic aerosols, in the form of ship exhaust effluent, on the microphysics and radiative properties of marine stratocumulus is studied using data gathered from the U.K. Met.

Remotely Sensed Measurements of Stratocumulus Properties during FIRE Using the C130 Aircraft Multi-channel Radiometer

Abstract This paper gives a description of a narrow-hand near-infrared radiometer that was operated during the marine stratocumulus intensive field observation program of FIRE in 1987 from the United

Optical properties of marine stratocumulus clouds modified by ships

The angular di\tr-ibution of \cattered radiation deep within a cloud layer was measured in marine stratocumulu\ clouds modified by the emissions from \hip\. These observations, obtained at I3

The dynamics of stratocumulus: Aircraft observations and comparisons with a mixed layer model

Results are presented from a detailed case study of daytime stratocumulus over the North Sea using an instrumented aircraft. The measurements include turbulence fluctuation data, radiation fluxes and