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首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >Climate variability at Marion Island, Southern Ocean, since 1960
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Climate variability at Marion Island, Southern Ocean, since 1960

机译:自1960年以来,南大洋马里恩岛的气候多变性

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摘要

In recent decades, instrumental data recorded at the South African Weather Service station on Marion Island (46°54′S and 37°51′E) in the Southern Ocean shows that the local climate of this island has undergone significant changes since the 1960s, mostly in austral summer. These include a decrease in rainfall, an increase in nonrainy days, changes in wind speed and direction, and an increase in maximum and minimum local air temperature and in nearshore sea surface temperature. This study analyzes surface temperature, pressure, sea surface temperature, and rainfall recorded daily at Marion Island together with NCEP reanalyses to explore the mechanisms potentially associated with these changes. It is suggested that the changes to the local climate of Marion Island are linked to the well-documented shift in phase of the semiannual oscillation in the Southern Hemisphere after about 1980.
机译:近几十年来,在南大洋马里恩岛(46°54′S和37°51′E)的南非气象服务站记录的仪器数据表明,自1960年代以来,该岛的当地气候发生了重大变化,主要在南方夏季。其中包括降雨减少,非雨天增加,风速和风向变化以及最大和最小局部气温以及近海海表温度的升高。这项研究分析了马里恩岛(Marion Island)每天记录的地表温度,压力,海表温度和降雨量,并进行了NCEP重新分析,以探索与这些变化潜在相关的机制。有人认为,马里恩岛当地气候的变化与1980年前后南半球半年振荡的相位变化有据可查。

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