Decadal variability of net water flux at the Mediterranean Sea Gibraltar Strait

Decadal variability of net water flux at the Mediterranean Sea Gibraltar Strait
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地中海直布罗陀海峡净水通量的年代际变化

DOI:
10.1016/j.gloplacha.2012.08.007
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发表时间:
2013
影响因子:
3.9
通讯作者:
M.V. Struglia
M.V. Struglia
中科院分区:
地球科学1区
文献类型:
--
作者:
Fenoglio-Marc L;A. Mariotti;G. Sannino;B. Meyssignac;A. Carillo;M.V. Struglia

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基于多个观测数据集和区域气候模式模拟结果相结合的方法,探讨了1960-2009年期间直布罗陀海峡流入地中海的净水通量的长期变率。这一方法包括应用地中海水收支方程,利用基于观测的质量变化、蒸发、降水和模拟河流流量及博斯普鲁斯海峡水通量的估计数,得出直布罗陀净流入量。这一推导进行了比较,从模拟使用PROTHEUS区域海洋-大气耦合模式,考虑到个人的水循环条款和整体直布罗陀水通量的结果。两种方法的结果都表明,1970-2009年期间,直布罗陀的净水通量有所增加(根据观测方法,每年增加0.8+/-0.2毫米/月)。模拟的直布罗陀净水通量显示1960-2009年期间的十年变化,包括1960-1970年期间净直布罗陀水通量减少,1970-2009年增加。海面净蒸发量的十年变化,如1970-2009年期间的增加,似乎是造成直布罗陀净流入量变化的原因,而博斯普鲁斯海峡的河川径流和净流入量则具有调节作用。据认为,与海面的水质量通量相比,地中海的质量变化相对较小,并且在1970-2009年期间没有显示出长期趋势。大西洋多年代际涛动(AMO)和北大西洋涛动(NAO)通过影响区域蒸发、降水和径流,间接影响直布罗陀净水通量。
Long-term variability of the net water flux into the Mediterranean Sea at the Gibraltar Strait over the period 1960–2009 is explored based on an approach combining multiple observational datasets and results from a regional climate model simulation. The approach includes deriving Gibraltar net inflow from the application of the Mediterranean Sea water budget equation using observationally based estimates of mass variation, evaporation, precipitation and simulated river discharge and Bosphorus Strait water fluxes. This derivation is compared with results from a simulation using the PROTHEUS regional ocean–atmosphere coupled model considering both individual water cycle terms and overall Gibraltar water flux. Results from both methodologies point to an increase in net water flux at Gibraltar over the period 1970–2009 (0.8+/−0.2mm/mo per year based on the observational approach). Simulated Gibraltar net water flux shows decadal variability during 1960–2009 including a net Gibraltar water flux decrease during 1960–1970 before the 1970–2009 increase. Decadal variations in net evaporation at the sea-surface, such as the increase during 1970–2009, appear to drive the changes in net inflow at Gibraltar, while river runoff and net inflow at the Bosphorus Strait have a modulating effect. Mediterranean Sea mass changes are seen to be relatively small compared to water mass fluxes at the sea surface and do not show a long-term trend over 1970–2009. The Atlantic Multi-decadal Oscillation (AMO) and the North Atlantic Oscillation (NAO) are relevant indirect influences on net water flux at Gibraltar via the influence they bear on regional evaporation, precipitation and runoff.
DOI: 10.1175/jcli-3225.1
发表时间: 2004-12
期刊: Journal of Climate
影响因子: 4.9
作者:
M. Struglia;A. Mariotti;A. Filograsso
通讯作者: M. Struglia;A. Mariotti;A. Filograsso
DOI: --
发表时间: 2007
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DOI: --
发表时间: 2007
期刊:
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DOI: --
发表时间: 2012
期刊: Climate Dynamics
影响因子: 4.6
作者:
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DOI: --
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