Search Results

• • 10 

    Academic Journals

  • Sort by: sorttype.publication.date.desc Newest sorttype.publication.date.asc Oldest sorttype.relevance Relevance

• Model emulation to understand the joint effects of ice-nucleating particles and secondary ice production on deep convective anvil cirrus.

  Authors:Rachel E. Hawker, Annette K. Miltenberger, Jill S. Johnson, Jonathan M. Wilkinson, Adrian A. Hill, Ben J. Shipway, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 23) Peer-Reviewed

  Dec. 1, 2021465 words Article Ice crystal formation in the mixed-phase region of deep convective clouds can affect the properties of climatically important convectively generated anvil clouds. Small ice crystals in the mixed-phase cloud region can be...

• A global model perturbed parameter ensemble study of secondary organic aerosol formation.

  Authors:Kamalika Sengupta, Kirsty Pringle, Jill S. Johnson, Carly Reddington, Jo Browse, Catherine E. Scott, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 4) Peer-Reviewed

  Feb. 23, 2021310 words Brief article A global model perturbed parameter ensemble of 60 simulations was used to explore how combinations of six parameters related to secondary organic aerosol (SOA) formation affect particle number concentrations and organic...

• Aerosol and physical atmosphere model parameters are both important sources of uncertainty in aerosol ERF

  Authors:Leighton A. Regayre, Jill S. Johnson, Masaru Yoshioka, Kirsty J. Pringle, David M. H. Sexton, Ben B. B. Booth, et al.From:Atmospheric Chemistry and Physics (Vol. 18, Issue 13) Peer-Reviewed

  July 13, 2018392 words Author abstract, Bri...

  Changes in aerosols cause a change in net top-of-the-atmosphere (ToA) short-wave and long-wave radiative fluxes; rapid adjustments in clouds, water vapour and temperature; and an effective radiative forcing (ERF) of...

• An emulator approach to stratocumulus susceptibility

  Authors:Franziska Glassmeier, Fabian Hoffmann, Jill S. Johnson, Takanobu Yamaguchi, Ken S. Carslaw, and Graham FeingoldFrom:Atmospheric Chemistry and Physics (Vol. 19, Issue 15) Peer-Reviewed

  Aug. 13, 2019255 words Author abstract, Bri...

  The climatic relevance of aerosol-cloud interactions depends on the sensitivity of the radiative effect of clouds to cloud droplet number N, and liquid water path LWP. We derive the dependence of cloud fraction CF,...

• Evaluation of global simulations of aerosol particle and cloud condensation nuclei number, with implications for cloud droplet formation

  Authors:George S. Fanourgakis, Maria Kanakidou, Athanasios Nenes, Susanne E. Bauer, Tommi Bergman, Ken S. Carslaw, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 13) Peer-Reviewed

  July 8, 2019690 words Brief article

  A total of 16 global chemistry transport models and general circulation models have participated in this study; 14 models have been evaluated with regard to their ability to reproduce the near-surface observed number...

• Aerosol-cloud-climate cooling overestimated by ship-track data.

  Authors:Franziska Glassmeier, Fabian Hoffmann, Jill S. Johnson, Takanobu Yamaguchi, Ken S. Carslaw, and Graham FeingoldFrom:Science (Vol. 371, Issue 6528) Peer-Reviewed

  Jan. 29, 20214,672 words Article 1520L

   Abstract Only

• The value of remote marine aerosol measurements for constraining radiative forcing uncertainty.

  Authors:Leighton A. Regayre, Julia Schmale, Jill S. Johnson, Christian Tatzelt, Andrea Baccarini, Silvia Henning, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 16) Peer-Reviewed

  Aug. 28, 2020254 words Brief article Aerosol measurements over the Southern Ocean are used to constrain aerosol-cloud interaction radiative forcing (RF.sub.aci) uncertainty in a global climate model. Forcing uncertainty is quantified using 1 million climate...

• The importance of comprehensive parameter sampling and multiple observations for robust constraint of aerosol radiative forcing

  Authors:Jill S. Johnson, Leighton A. Regayre, Masaru Yoshioka, Kirsty J. Pringle, Lindsay A. Lee, David M. H. Sexton, et al.From:Atmospheric Chemistry and Physics (Vol. 18, Issue 17) Peer-Reviewed

  Sept. 11, 2018369 words Author abstract, Bri...

  Observational constraint of simulated aerosol and cloud properties is an essential part of building trustworthy climate models for calculating aerosol radiative forcing. Models are usually tuned to achieve good...

• Comparing the impact of environmental conditions and microphysics on the forecast uncertainty of deep convective clouds and hail

  Authors:Constanze Wellmann, Andrew I. Barrett, Jill S. Johnson, Michael Kunz, Bernhard Vogel, Ken S. Carslaw, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 4) Peer-Reviewed

  Feb. 26, 2020264 words Brief article Severe hailstorms have the potential to damage buildings and crops. However, important processes for the prediction of hailstorms are insufficiently represented in operational weather forecast models. Therefore, our...

• Robust observational constraint of uncertain aerosol processes and emissions in a climate model and the effect on aerosol radiative forcing.

  Authors:Jill S. Johnson, Leighton A. Regayre, Masaru Yoshioka, Kirsty J. Pringle, Steven T. Turnock, Jo Browse, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 15) Peer-Reviewed

  Aug. 13, 2020371 words Brief article The effect of observational constraint on the ranges of uncertain physical and chemical process parameters was explored in a global aerosol-climate model. The study uses 1 million variants of the Hadley Centre General...