Mapping the Antarctic Polar Front: Weekly realizations from 2002 to 2014, links to NetCDF file and MPEG4 movie
Mapping the Antarctic Polar Front: Weekly realizations from 2002 to 2014, links to NetCDF file and MPEG4 movie
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绘制南极极锋地图：2002 年至 2014 年每周实现情况，NetCDF 文件和 MPEG4 电影的链接
DOI：
10.1594/pangaea.855640
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发表时间：
2016
影响因子：
11.4
通讯作者：
N. Lovenduski
中科院分区：
文献类型：
--
作者：
N. M. Freeman;N. Lovenduski
我们绘制了12年（2002-2014年）内南极极锋（PF）在南大洋的每周位置，使用卫星海洋表面温度（SST）从透云微波辐射计估计。我们的研究推进了以前的努力，利用水文和卫星数据绘制PF，并提供了一个独特的实现PF在所有的地区（doi：10.1594/PANGAEA.855640）每周分辨率。太平洋暖流的平均路径是不对称的，它的纬度位置沿其绕极路径横跨44至64南沿着。太平洋暖流的海温范围为0.6至6.9 C，反映了其纬度位置的大幅度扩展。锋面的平均强度为每100公里1.7摄氏度，强度范围为每100公里1.4至2.3摄氏度。锋面强度与海底地形的深度显著相关，表明锋面在浅水深上增强。PF的实现是一致的PF估计使用消耗性深海温度计数据在德雷克海峡和澳大利亚和非洲部门的相应的表面表达式。PF的气候平均位置与先前公布的估计相似，但不完全相同。由于PF是南大洋物理环流、表层营养盐浓度和海洋学的一个关键指标，因此该区域未来的物理和海洋地球化学海洋学研究将受益于所提供的数据集。
We map the weekly position of the Antarctic Polar Front (PF) in the Southern Ocean over a 12-year period (2002–2014) using satellite sea surface temperature (SST) estimated from cloud-penetrating microwave radiometers. Our study advances previous efforts to map the PF using hydrographic and satellite data and provides a unique realization of the PF at weekly resolution across all longitudes (doi:10.1594/PANGAEA.855640). The mean path of the PF is asymmetric; its latitudinal position spans from 44 to 64 S along its circumpolar path. SST at the PF ranges from 0.6 to 6.9 C, reflecting the large spread in latitudinal position. The average intensity of the front is 1.7 C per 100 km, with intensity ranging from 1.4 to 2.3 C per 100 km. Front intensity is significantly correlated with the depth of bottom topography, suggesting that the front intensifies over shallow bathymetry. Realizations of the PF are consistent with the corresponding surface expressions of the PF estimated using expendable bathythermograph data in the Drake Passage and Australian and African sectors. The climatological mean position of the PF is similar, though not identical, to previously published estimates. As the PF is a key indicator of physical circulation, surface nutrient concentration, and biogeography in the Southern Ocean, future studies of physical and biogeochemical oceanography in this region will benefit from the provided data set.