Characterization of south central Pacific Ocean wind regimes in present and future climate for pearl farming application

MARINE POLLUTION BULLETIN

卷:160

Article

Dutheil, Cyril^1,2,5  Andrefouet, S.¹  Jullien, S.³  Le Gendre, R.⁴  Aucan, J.¹  Menkes, C.¹ 

[1] Univ Nouvelle Caledonie, Inst Rech Dev, UMR 9220 ENTROPIE Inst Rech Dev, Univ Reunion,Ifremer,Ctr Natl Rech Sci, BP A5, Noumea 98848, New Caledonia

[2] LOCEAN UMR 7159, IRD, BP A5, Noumea 98848, New Caledonia

[3] Univ Brest, IFREMER, CNRS, IRD,Lab Oceanog Phys & Spatiale LOPS,IUEM, Plouzane, France

[4] IFREMER, Unite Rech Lagons Ecosyst & Aquaculture Durable, ENTROPIE UMR 9220, BP 32078, Noumea 98897, New Caledonia

[5] Leibniz Inst Balt Sea Res Warnemunde, Dept Phys Oceanog & Instrumentat, Rostock, Germany

关键词: South Central Pacific atolls;    Weather regime;    Surface wind conditions;    Pearl farming;    Climate change;   

DOI  :  10.1016/j.marpolbul.2020.111584

来源: Elsevier

【 摘 要 】

In the South Pacific (SP) pearl farming atolls, wind is the main driver of lagoon water circulation, affecting dispersal and survival of pearl oyster larvae. To characterize typical wind conditions in the SP, wind regime classifications are performed from regional climate simulations using the WRF model, for present-day and for the end of the 21st century under RCP8.5 scenario conditions. At the daily time-scale, 4 regimes are identified: a trade-wind, a north-easterly, and two easterly regimes. Their characteristics are driven by large-scale circulation and climate modes of variability. In future projection, all regimes are characterized by a similar to 15% wind speed increase, while directions and occurrence frequencies undergo marginal changes. At the monthly time-scale that corresponds to pearl oyster pelagic larval duration, nine wind regimes are determined including three regimes with wind reversals. These regimes can be used to model typical lagoon conditions during larval dispersal.

【 授权许可】

Free