Blar i Bergen Open Research Archive på forfatter "Renfrew, Ian A."
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Characteristics of Cold-Air Outbreak Events and Associated Polar Mesoscale Cyclogenesis over the North Atlantic Region
Terpstra, Annick; Renfrew, Ian A.; Sergeev, Denis (Journal article; Peer reviewed, 2021)Equatorward excursions of cold polar air masses into ice-free regions, so-called Cold Air Outbreaks (CAO), are frequently accompanied by the development of severe mesoscale weather features. Focusing on two key regions, ... -
Coupled atmosphere–ocean observations of a cold-air outbreak and its impact on the Iceland Sea
Renfrew, Ian A.; Huang, Jie; Semper, Stefanie; Barrell, Christopher; Terpstra, Annick; Pickart, Robert S.; Våge, Kjetil; Elvidge, Andrew D.; Spengler, Thomas; Strehl, Anna-Marie; Weiss, Alexandra (Journal article; Peer reviewed, 2023)Marine cold-air outbreaks (CAOs) are vigorous equatorward excursions of cold air over the ocean, responsible for the majority of wintertime oceanic heat loss from the subpolar seas of the North Atlantic. However, the impact ... -
Decreasing intensity of open-ocean convection in the Greenland and Iceland seas
Moore, George William Kent; Våge, Kjetil; Pickart, Robert S.; Renfrew, Ian A. (Peer reviewed; Journal article, 2015)The air–sea transfer of heat and fresh water plays a critical role in the global climate system1. This is particularly true for the Greenland and Iceland seas, where these fluxes drive ocean convection that contributes to ... -
An evaluation of surface meteorology and fluxes over the Iceland and Greenland Seas in ERA5 reanalysis: The impact of sea ice distribution
Renfrew, Ian A.; Barrell, C.; Elvidge, A.D.; Brooke, J.K.; Duscha, Christiane; King, J.C.; Kristiansen, Jørn; Cope, T. Lachlan; Moore, George William Kent; Pickart, Robert S.; Reuder, Joachim; Sandu, I.; Sergeev, Denis; Terpstra, Annick; Våge, Kjetil; Weiss, A. (Journal article; Peer reviewed, 2021)The Iceland and Greenland Seas are a crucial region for the climate system, being the headwaters of the lower limb of the Atlantic Meridional Overturning Circulation. Investigating the atmosphere–ocean–ice processes in ... -
A Ship-Based Characterization of Coherent Boundary-Layer Structures Over the Lifecycle of a Marine Cold-Air Outbreak
Duscha, Christiane Anabell; Barrell, Christopher; Renfrew, Ian A.; Brooks, Ian M.; Sodemann, Harald; Reuder, Joachim (Journal article; Peer reviewed, 2022)Convective coherent structures shape the atmospheric boundary layer over the lifecycle of marine cold-air outbreaks (CAOs). Aircraft measurements have been used to characterize such structures in past CAOs. Yet, aircraft ... -
Warm air intrusions reaching the MOSAiC expedition in April 2020- The YOPP targeted observing period (TOP)
Svensson, Gunilla; Murto, Sonja; Shupe, Matthew D.; Pithan, Felix; Magnusson, Linus; Day, Jonathan J.; Doyle, James D.; Renfrew, Ian A.; Spengler, Thomas; Vihma, Timo (Journal article; Peer reviewed, 2023)In the spring period of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition, an initiative was in place to increase the radiosounding frequency during warm air intrusions in the ...