{"title":"ZJU-AERO V0.5:专为 CMA-GFS/MESO 设计的精确高效雷达操作器,可模拟非球形流体","authors":"Hejun Xie, Lei Bi, Wei Han","doi":"10.5194/gmd-17-5657-2024","DOIUrl":null,"url":null,"abstract":"Abstract. In this study, we present a new forward polarimetric radar operator called the Accurate and Efficient Radar Operator designed by ZheJiang University (ZJU-AERO). This operator was designed to interface with the numerical weather prediction (NWP) model of the global forecast system/regional mesoscale model of the China Meteorological Administration (CMA-GFS/MESO). The main objective of developing this observation operator was to assimilate observations from the precipitation measurement radar (PMR). It is also capable of simulating the ground-based radar's polarimetric radar variables, excluding the Doppler variables such as radial velocity and spectrum width. To calculate the hydrometeor optical properties of ZJU-AERO, we utilize the invariant-imbedding T-matrix (IITM) method, which can handle non-spherical and inhomogeneous hydrometeor particles in the atmosphere. The optical database of ZJU-AERO was designed with a multi-layered architecture to ensure the flexibility in hydrometeor morphology and orientation specifications while maintaining operational efficiency. Specifically, three levels of databases are created that store the single-scattering properties for different shapes at discrete sizes for various fixed orientations, integrated single-scattering properties over shapes and orientations, and bulk-scattering properties incorporating the size average, respectively. In this work, we elaborate on the design concepts, physical basis, and hydrometeor specifications of ZJU-AERO. Additionally, we present a case study demonstrating the application of ZJU-AERO in simulating the radar observations of Typhoon Haishen.\n","PeriodicalId":509138,"journal":{"name":"Geoscientific Model Development","volume":"15 11","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"ZJU-AERO V0.5: an Accurate and Efficient Radar Operator designed for CMA-GFS/MESO with the capability to simulate non-spherical hydrometeors\",\"authors\":\"Hejun Xie, Lei Bi, Wei Han\",\"doi\":\"10.5194/gmd-17-5657-2024\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract. In this study, we present a new forward polarimetric radar operator called the Accurate and Efficient Radar Operator designed by ZheJiang University (ZJU-AERO). 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引用次数: 0
摘要
摘要在本研究中,我们提出了一种新的前向偏振雷达算子,即浙江大学设计的精确高效雷达算子(ZJU-AERO)。该算子旨在与中国气象局全球预报系统/区域中尺度模式(CMA-GFS/MESO)的数值天气预报(NWP)模式对接。开发该观测运算器的主要目的是同化降水测量雷达(PMR)的观测数据。它还能模拟地面雷达的偏振雷达变量,但不包括径向速度和频谱宽度等多普勒变量。为了计算 ZJU-AERO 的水文流星光学特性,我们采用了不变量-镶嵌 T 矩阵(IITM)方法,该方法可以处理大气中的非球形和不均匀水文流星粒子。ZJU-AERO 的光学数据库采用多层结构设计,以确保水文气象形态和方位规格的灵活性,同时保持运行效率。具体来说,我们创建了三个层次的数据库,分别存储不同形状、不同尺寸、不同固定方向的单散射特性,形状和方向的综合单散射特性,以及包含尺寸平均值的体散射特性。在这项工作中,我们阐述了 ZJU-AERO 的设计理念、物理基础和水文流星规格。此外,我们还介绍了一个案例研究,展示了 ZJU-AERO 在模拟台风海神雷达观测中的应用。
ZJU-AERO V0.5: an Accurate and Efficient Radar Operator designed for CMA-GFS/MESO with the capability to simulate non-spherical hydrometeors
Abstract. In this study, we present a new forward polarimetric radar operator called the Accurate and Efficient Radar Operator designed by ZheJiang University (ZJU-AERO). This operator was designed to interface with the numerical weather prediction (NWP) model of the global forecast system/regional mesoscale model of the China Meteorological Administration (CMA-GFS/MESO). The main objective of developing this observation operator was to assimilate observations from the precipitation measurement radar (PMR). It is also capable of simulating the ground-based radar's polarimetric radar variables, excluding the Doppler variables such as radial velocity and spectrum width. To calculate the hydrometeor optical properties of ZJU-AERO, we utilize the invariant-imbedding T-matrix (IITM) method, which can handle non-spherical and inhomogeneous hydrometeor particles in the atmosphere. The optical database of ZJU-AERO was designed with a multi-layered architecture to ensure the flexibility in hydrometeor morphology and orientation specifications while maintaining operational efficiency. Specifically, three levels of databases are created that store the single-scattering properties for different shapes at discrete sizes for various fixed orientations, integrated single-scattering properties over shapes and orientations, and bulk-scattering properties incorporating the size average, respectively. In this work, we elaborate on the design concepts, physical basis, and hydrometeor specifications of ZJU-AERO. Additionally, we present a case study demonstrating the application of ZJU-AERO in simulating the radar observations of Typhoon Haishen.