CMA高分辨率陆面数据同化系统（HRCLDAS-V1.0）研发及进展
Development and Progress of High Resolution CMA Land Surface Data Assimilation System
中文摘要：
回顾了中国气象局高分辨率陆面数据同化系统（High Resolution China Meteorological Administration Land DataAssimilation System，HRCLDAS）的研发历程，重点介绍了HRCLDAS研发过程中的重要进展和突破，概要阐述了这些进展对HRCLDAS业务化的贡献。主要包括：引入1 km分辨率地形数据，采用多重网格变分分析技术制作1 km分辨率气象驱动数据；基于FY-2卫星1 km可见光通道、高分辨率地形及地表反照率等数据，改善地面入射太阳辐射产品质量与空间分辨率，利用辐射计算模型（Hybrid）模型与地面站日照时数、气温等观测资料模拟地面太阳辐射，并利用多重网格变分分析技术实现二者融合；实现东亚多卫星集成降水产品（EMSIP）与4万余自动站观测降水融合，并实时生成格点融合产品，针对陆面模拟分辨率高、数据量大的特点，设计了分块并行与模式并行结合的计算方案，建立了高效的土壤湿度模拟产品业务系统，有效地推动各级气象部门开展相关业务应用工作。
中文关键词：
HRCLDAS，驱动数据，陆面模式，业务系统
KeyWords：
HRCLDAS, forcing data, land model, operation
Abstract：
This paper reviews the development of HRCLDAS, a high-resolution land data assimilation system, focuses on the important progress and breakthroughs in HRCLDAS research and development, and summarizes the contribution of these developments to the HRCLDAS operation. These include the 1 km resolution of meteorological data by using multi-grid variation analysis technique; The ground Radiation product quality and spatial resolution based on the data of 1-km visible channel, highresolution terrain and surface albedo of FY-2 satellite; Simulation of ground solar radiation using hybrid model and ground station sunshine hours, air temperature and other elements; Achieving the integration of the these information by using multiple grid variation analysis technology; Achieving integration of the East Asia satellite precipitation products (EMSIP) and observational data at 40-thousand automatic stations. A parallel calculation scheme combining the block parallel and mode is designed to realize efficient soil moisture simulation based on the characteristics of high terrestrial simulation resolution and large data volume. The HRCLDAS did promote all meteorological departments at varous levels to carry out related operation applications