English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Tropospheric aerosol size distributions are simulated by three online global modelswhich employ exactly the sameaerosol microphysics module,but differ in many aspects such asmodel meteorology, natural aerosol emission, sulfur chemistry, anddeposition processes.The main purpose of this study is to identifythe influence of these differences on the aerosol simulation.Number concentrations of different aerosol size ranges are compared among thethree models and against observations. Overall all three models are able to capturethe basic features of the observed spatial distribution.The magnitude of number concentration is consistentamong the three models in all size ranges,although quantitative differences are also clearly detectable.For the soluble and insoluble coarse and accumulation modes,inter-model discrepancies result primarily fromthe different parameterization schemes for sea salt and dust emission,and are also linked to the different strengths of theconvective transport in the meteorological models.As for the nucleation mode and the soluble Aitken mode,the spread of model results appear largest in the tropics and in the middle andupper troposphere. Diagnostics and sensitivity experiments suggest thatthis large spread is directly related to the sulfur cycle in the models,which is strongly affected by the choice of sulfur chemistry scheme,its coupling with the convective transport and wet deposition calculation, andthe related meteorological fields such as cloud cover, cloud water content, and precipitation.Aerosol size distributions simulated by the three models arecompared against observations in the boundary layer. The characteristic shape andmagnitude of the distribution functions are reasonably reproducedin typical conditions of clean, polluted and transition areas

Tropospheric aerosol size distributions simulated by three online global aerosol models using the M7 microphysics module