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

. This study presents an approach for the quantification ofcloud–aerosol transition-zone broadband longwave radiative effects at thetop of the atmosphere (TOA) during daytime over the ocean, based onsatellite observations and radiative transfer simulation. Specifically, weused several products from MODIS (MODerate Resolution ImagingSpectroradiometer) and CERES (Clouds and the Earth's Radiant Energy System)sensors for the identification and selection of CERES footprints with ahorizontally homogeneous transition-zone and clear-sky conditions. For theselected transition-zone footprints, radiative effect was calculated as thedifference between the instantaneous CERES TOA upwelling broadband longwaveradiance observations and corresponding clear-sky radiance simulations. Theclear-sky radiances were simulated using the Santa Barbara DISORT (DIScrete Ordinates Radiative Transfer program for a multi-Layered plane-parallel medium) Atmospheric Radiative Transfer model fed by the hourly ERA5 reanalysis(fifth generation ECMWF ReAnalysis) atmospheric and surface data. The CERESradiance observations corresponding to the clear-sky footprints detectedwere also used for validating the simulated clear-sky radiances. We testedthis approach using the radiative measurements made by the MODIS and CERESinstruments on board the Aqua platform over the southeastern Atlantic Oceanduring August 2010. For the studied period and domain, transition-zoneradiative effect (given in flux units) is on average equal to 8.0 ± 3.7 W m−2 (heating effect; median: 5.4 W m−2), although caseswith radiative effects as large as 50 W m−2 were found.

Longwave radiative effect of the cloud–aerosol transition zone based on CERES observations