本文選題：海洋數(shù)值模擬　切入點(diǎn)：海洋-海冰耦合數(shù)值模式　出處：《海洋科學(xué)進(jìn)展》2016年02期 　論文類型：期刊論文

【摘要】：基于全球海洋-海冰耦合數(shù)值模式,研究了不同時(shí)間和空間分辨率的海表驅(qū)動場對大西洋經(jīng)向翻轉(zhuǎn)環(huán)流(Atlantic Meridional Overturning Circulation,AMOC)和海表面溫度(Sea Surface Temperature,SST)模擬的影響。敏感性數(shù)值實(shí)驗(yàn)結(jié)果表明,海表驅(qū)動場時(shí)間和空間分辨率的不同不僅會影響SST的模擬,而且會顯著影響AMOC強(qiáng)度的模擬。相比高時(shí)間分辨率的海表驅(qū)動場,時(shí)間和空間分辨率的降低會造成AMOC模擬強(qiáng)度的減弱和SST的升高。月平均驅(qū)動場驅(qū)動的AMOC比6h分辨率驅(qū)動場驅(qū)動的控制實(shí)驗(yàn)減少6.7Sv,降低了34%;同為6h分辨率,粗空間分辨率大氣驅(qū)動場模擬的AMOC比高空間分辨率實(shí)驗(yàn)減少1.4Sv,降低了7%。對海洋上層流場和海表熱通量進(jìn)一步分析表明,低時(shí)間和空間分辨率的海表風(fēng)場的減弱是導(dǎo)致AMOC減弱和SST升高的主要原因。
[Abstract]:Based on the coupled global ocean-sea ice numerical model, the effects of the surface driving field with different temporal and spatial resolutions on the simulation of Atlantic Meridional Overturning Circulation (AMOC) and Sea Surface temperature (SST) are studied. The difference of time and spatial resolution of sea surface driving field will not only affect the simulation of SST, but also significantly affect the simulation of AMOC intensity. The decrease of time and spatial resolution will result in the weakening of AMOC simulation intensity and the increase of SST. The average monthly driving field driven AMOC is 6.7Sv less than the 6h resolution driving field control experiment, which is 34% lower than that of 6h resolution. The AMOC of coarse spatial resolution atmospheric driving field simulation is 1. 4 Sv less than that of high spatial resolution experiment, and it is reduced by 7. The further analysis of ocean upper current field and sea surface heat flux shows that, The decrease of sea surface wind field with low temporal and spatial resolution is the main reason for the decrease of AMOC and the increase of SST.
【作者單位】： 中國海洋大學(xué)海洋與大氣學(xué)院;國家海洋局第一海洋研究所;海洋環(huán)境科學(xué)和數(shù)值模擬國家海洋局重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金委員會-山東省人民政府聯(lián)合資助海洋科學(xué)研究中心項(xiàng)目——海洋環(huán)境動力學(xué)和數(shù)值(U1406404) 全球變化與海氣相互作用專項(xiàng)——海洋動力系統(tǒng)和多運(yùn)動形態(tài)相互作用(GASI-03-IPOVAI-05) 南北極環(huán)境綜合考察與評估專項(xiàng)——極地對全球和我國氣候變化影響的綜合評價(jià)項(xiàng)目(CHINARE2016-04-04)
【分類號】：P731.27
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本文編號：1569158