• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Continental Shelf Research: A Companion Journal to Deep-Sea Research and Progress in Oceanography >Temporal and spatial variability of Chl-a and SST on the South Atlantic Bight: Revisiting with cloud-free reconstructions of MODIS satellite imagery
【24h】

Temporal and spatial variability of Chl-a and SST on the South Atlantic Bight: Revisiting with cloud-free reconstructions of MODIS satellite imagery

机译：南大西洋海岸线上Chl-a和SST的时空变化：重新利用MODIS卫星图像的无云重建

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Daily, cloud-free data interpolating empirical orthogonal function (DINEOF) reconstructions of sea-surface temperature (SST) and chlorophyll (Chl-a) satellite imagery are compiled into monthly mean images for a six-year period (2003-2008) and used to identify their spatial and temporal variability on the South Atlantic Bight. Monthly-mean SST has the highest variability on the inner-shelf, decreasing seaward approaching the more stable temperatures of the Gulf Stream (GS). Monthly-mean Chl-a concentrations are similarly highest on the inner shelf throughout the year and decrease cross-shelf toward the nutrient depleted open ocean. Empirical orthogonal function (EOF) analyses on SST and Chl-a show a clear seasonal cycle in their 1st mode of variability, with SST lagging behind Chl-a by approximately one month. The 1st EOF modes account for 95.8% and 46.4% variance of SST and Chl-a, respectively. Chl-a EOF mode 1 in particular shows a highly regionalized spatial pattern with values on the central SAB clearly out of phase with the southern and northern SAB. This regional difference is likely a result of shelf geometry and stratification, which modulate GS influence on the shelf. SST EOF mode 2 exhibits a seasonal cycle as well, which previous studies have shown to be a function of local wind. Chl-a EOF mode 2 is well correlated with the cumulative river transport onto the SAB, but accounts for a relatively small 10.8% of Chl-a variability.
机译：将每日无云数据插值的经验正交函数（DINEOF）重建海面温度（SST）和叶绿素（Chl-a）卫星图像的数据转换为六年期（2003-2008）的每月平均图像并使用以确定它们在南大西洋海岸线上的时空变化。每月平均值的海表温度在内层架中具有最大的变化性，向海逐渐减少，接近墨西哥湾流（GS）的更稳定温度。全年平均月平均Chl-a浓度在内陆架上最高，并减少了对营养耗尽的开放海洋的交叉货架。对SST和Chl-a进行的经验正交函数（EOF）分析显示，在第一种变异模式下，季节周期明显，SST落后Chl-a约一个月。第一种EOF模式分别占SST和Chl-a的95.8％和46.4％的方差。 Chl-a EOF模式1特别显示了高度区域化的空间格局，中央SAB上的值与南部和北部SAB明显不同。这种区域差异可能是货架几何形状和分层的结果，这调节了GS对货架的影响。 SST EOF模式2也表现出一个季节性周期，以前的研究表明这是局部风的函数。 Chl-a EOF模式2与河流流向SAB的累积量有很好的相关性，但占Chl-a变异性的10.8％相对较小。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号