North West Shelf Joint Environmental Management Study:InVitro Inputs- NCEP Winds

Wind-induced currents are among the strongest currents in the oceanic surface layer. Winds drive ocean currents by transferring momentum to this layer. The important quantity in this process is the wind stress, which is a quadratic function of wind speed. The data used in this project were produced by the NCEP/NCAR reanalysis project. NCEP and NCAR are cooperating in a project to produce a 40-year record of global analyses of atmospheric fields in support of the needs of the research and climate monitoring communities. The wind-stress dataset covers the period 1965 to 1997 and contains the following fields from which the velocity vector (speed and direction) were calculated: .zonal wind stress .meridional wind stress风致海流是海洋表层最为强劲的海流类型之一。风通过向海洋表层传递动量，驱动海流形成。该过程的核心物理量为风应力（wind stress），其与风速呈二次函数关系。本项目所使用的数据来自NCEP/NCAR再分析项目（NCEP/NCAR reanalysis project）。NCEP与NCAR正合作开展一项项目，以生成一套为期40年的全球大气场再分析记录，为科研与气候监测领域的需求提供支撑。该风应力数据集的时间跨度为1965年至1997年，包含用于计算速度矢量（含风速与风向）的两类场数据：纬向风应力（zonal wind stress）与经向风应力（meridional wind stress）。