Layered Atlantic Smoke Interactions with Clouds (LASIC) Science Plan

作者: J Redemann , SE Yuter , DM Romps , JM Haywood , SJ Ghan

DOI:

关键词: SubtropicsMagnitude (mathematics)ClimatologyGeographyBoundary layerForcing (mathematics)High variabilitySmokeShortwave radiationAerosolAtmospheric sciences

摘要: Southern Africa is the world’s largest emitter of biomass-burning (BB) aerosols. Their westward transport over remote southeast Atlantic Ocean colocates some atmospheric loadings absorbing aerosol with least examined Earth’s major subtropical stratocumulus decks. Global model results highlight that positive top-of-atmosphere forcing in world occurs Atlantic, but this region exhibits large differences magnitude and sign between reputable models, part because high variability underlying cloud distributions. Many uncertainties contribute to highly variable radiation fields: aging shortwave-absorbing during transport, how much mixes into cloudy boundary layer, low clouds adjust smoke-radiation smoke-cloud interactions. In addition, ability BB absorb shortwave known vary seasonally as fuel type on land changes.

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