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Measurements of cloud radiative effect across the Southern Ocean (43 S79 S, 63 E158 W)


Wang, H and Klekociuk, AR and French, WJR and Alexander, SP and Warner, TA, Measurements of cloud radiative effect across the Southern Ocean (43 S-79 S, 63 E-158 W), Atmosphere, 11, (9) Article 949. ISSN 2073-4433 (2020) [Refereed Article]


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Copyright 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (

DOI: doi:10.3390/atmos11090949


The surface radiation environment over the Southern Ocean within the region bound by 42.8 S to 78.7 S and 62.6 E to 157.7 W is summarised for three austral summers. This is done using ship-based measurements with the combination of downwelling radiation sensors and a cloud imager. We focus on characterising the cloud radiative effect (CRE) under a variety of conditions, comparing observations in the open ocean with those in the sea ice zone. For comparison with our observed data, we obtained surface data from the European Centre for Medium-Range Weather Forecasts fifth reanalysis (ERA5). We found that the daily average cloud fraction was slightly lower in ERA5 compared with the observations (0.71 and 0.75, respectively). ERA5 also showed positive biases in the shortwave radiation effect and a negative bias in the longwave radiation effect. The observed mean surface CRE of −164 100 Wm−2 was more negative than the mean surface CRE for ERA5 of −101 W m−2.

Item Details

Item Type:Refereed Article
Keywords:clouds, cloud radiative effect, Southern Ocean, Ross Sea, shortwave radiation, longwave radiation
Research Division:Earth Sciences
Research Group:Atmospheric sciences
Research Field:Atmospheric radiation
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Antarctic and Southern Ocean oceanic processes
UTAS Author:Wang, H (Mr Haoran Wang)
UTAS Author:Klekociuk, AR (Dr Andrew Klekociuk)
UTAS Author:French, WJR (Dr John French)
UTAS Author:Alexander, SP (Dr Simon Alexander)
ID Code:142726
Year Published:2020
Web of Science® Times Cited:4
Deposited By:Oceans and Cryosphere
Deposited On:2021-02-09
Last Modified:2021-03-30
Downloads:17 View Download Statistics

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