ASCAT Level 1 SZO Climate Data Record Release 2 - Metop

Reprocessed L1B data from the Advanced Scatterometer (ASCAT) on METOP-A, resampled at 25 km Swath Grid (SZO). Normalized radar cross section (NRCS) triplets of the Earth surface together with measurement time, location (latitude and longitude) and geometrical information (incidence and azimuth angles). The prime objective of the Advanced SCATterometer (ASCAT) is to measure wind speed and direction over the oceans, and the main operational application is the assimilation of ocean winds in NWP models. Other operational applications, based on the use of measurements of the backscattering coefficient, are sea ice edge detection and monitoring, monitoring sea ice, snow cover, soil moisture and surface parameters. This product is also available at full resolution and at 12.5 km Swath Grid. This is a Fundamental Climate Data Record (FCDR).

本数据集为METOP-A卫星搭载的高级散射计（Advanced Scatterometer，ASCAT）的L1B级重处理数据，已重采样至25千米幅宽网格（Swath Grid，SZO）。数据集包含地球表面的归一化雷达散射截面（Normalized Radar Cross Section，NRCS）三元组，并附带测量时间、位置（纬度与经度）以及几何信息（入射角与方位角）。高级散射计（ASCAT）的核心目标为测量海洋上空的风速与风向，其主要业务应用为将海洋风场数据同化至数值天气预报（Numerical Weather Prediction，NWP）模型。基于后向散射系数测量的其他业务应用还包括海冰边缘检测与监测、海冰、积雪、土壤湿度及地表参数监测。该产品同时支持全分辨率与12.5千米幅宽网格两种数据格式，属于基础气候数据记录（Fundamental Climate Data Record，FCDR）。