NASA NCA-LDAS Project

The National Climate Assessment - Land Data Assimilation System, or NCA-LDAS, is a terrestrial water reanalysis in support of the United States Global Change Research Program's NCA activities. NCA-LDAS features high resolution, gridded, daily time series data products of terrestrial water and energy balance stores, states, and fluxes over the continental U.S., derived from land surface hydrologic modeling with multivariate assimilation of satellite Environmental Data Records (EDRs). The overall goal is to provide the highest quality terrestrial hydrology products that enable improved scien...国家气候评估陆地数据同化系统（National Climate Assessment - Land Data Assimilation System，简称NCA-LDAS）是一套陆地水循环再分析数据集，旨在为美国全球变化研究计划（United States Global Change Research Program）的国家气候评估相关活动提供支撑。该系统提供覆盖美国本土的高分辨率、网格化逐日时间序列数据产品，包含陆地水与能量平衡的储量、状态量及通量，其数据基于陆面水文模拟，并结合了卫星环境数据记录（Environmental Data Records，简称EDRs）的多变量同化技术。其总体目标是提供最高质量的陆地水文学数据产品，以助力提升科学……