Extreme climate response to marine cloud brightening in the arid Sahara-Sahel-Arabian Peninsula zone
Beijing Normal University
University of Bedfordshire
marine cloud brightening scheme
Sahara-Sahel-Arabian Peninsula zone
Subject Categories::F851 Applied Environmental Sciences
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AbstractPurpose Climatic extreme events are predicted to occur more frequently and intensely and will significantly threat the living of residents in arid and semi-arid regions. Therefore, this study aims to assess climatic extremes’ response to the emerging climate change mitigation strategy using a marine cloud brightening (MCB) scheme. Design/methodology/approach Based on Hadley Centre Global Environmental Model version 2-Earth System model simulations of a MCB scheme, this study used six climatic extreme indices [i.e. the hottest days (TXx), the coolest nights (TNn), the warm spell duration (WSDI), the cold spell duration (CSDI), the consecutive dry days (CDD) and wettest consecutive five days (RX5day)] to analyze spatiotemporal evolution of climate extreme events in the arid Sahara-Sahel-Arabian Peninsula Zone with and without MCB implementation. Findings Compared with a Representative Concentration Pathways 4.5 scenario, from 2030 to 2059, implementation of MCB is predicted to decrease the mean annual TXx and TNn indices by 0.4–1.7 and 0.3–2.1°C, respectively, for most of the Sahara-Sahel-Arabian Peninsula zone. It would also shorten the mean annual WSDI index by 118–183 days and the mean annual CSDI index by only 1–3 days, especially in the southern Sahara-Sahel-Arabian Peninsula zone. In terms of extreme precipitation, MCB could also decrease the mean annual CDD index by 5–25 days in the whole Sahara and Sahel belt and increase the mean annual RX5day index by approximately 10 mm in the east part of the Sahel belt during 2030–2059. Originality/value The results provide the first insights into the impacts of MCB on extreme climate in the arid Sahara-Sahel-Arabian Peninsula zone.
CitationZhu Y, Zhang Z, Crabbe MJC (2021) 'Extreme climate response to marine cloud brightening in the arid Sahara-Sahel-Arabian Peninsula zone', International Journal of Climate Change Strategies and Management, (), pp.-.
SponsorsThis research was partially supported by the Second Tibetan Plateau Scientific Expedition and Research No 2019QZKK0906; European Commission Horizon2020 Flagship Project “ePIcenter”; Taishan Distinguished Professorship Fund.
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