Preprints
https://doi.org/10.5194/gmd-2023-225
https://doi.org/10.5194/gmd-2023-225
Submitted as: development and technical paper
 | 
02 Jan 2024
Submitted as: development and technical paper |  | 02 Jan 2024
Status: a revised version of this preprint was accepted for the journal GMD and is expected to appear here in due course.

ZJU-AERO V0.5: An Accurate and Efficient Radar Operator Designed for CMA-GFS/MESO with Capability of Simulating Non-spherical Hydrometeors

Hejun Xie, Lei Bi, and Wei Han

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 Meteorology Administration (CMA-GFS/MESO). The main objective of developing this observation operator was to assimilate observations from the Precipitation Measurement Radar (PMR) and ground-based radar’s polarimetric radar variables, excluding the Doppler variables. To calculate the hydrometeor optical properties of ZJU-AERO, we utilized 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. 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 radar observations of Typhoon Haishen.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Hejun Xie, Lei Bi, and Wei Han

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2023-225', Anonymous Referee #1, 01 Feb 2024
    • AC1: 'Reply on RC1', Lei Bi, 17 Mar 2024
  • RC2: 'Comment on gmd-2023-225', Anonymous Referee #2, 14 Feb 2024
    • AC2: 'Reply on RC2', Lei Bi, 17 Mar 2024

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2023-225', Anonymous Referee #1, 01 Feb 2024
    • AC1: 'Reply on RC1', Lei Bi, 17 Mar 2024
  • RC2: 'Comment on gmd-2023-225', Anonymous Referee #2, 14 Feb 2024
    • AC2: 'Reply on RC2', Lei Bi, 17 Mar 2024
Hejun Xie, Lei Bi, and Wei Han

Data sets

Example Case Data of Forward Radar Operator ZJU-AERO Release V0.5.0 Hejun Xie, Lei Bi, and Wei Han https://doi.org/10.5281/zenodo.10058324

Model code and software

An Accurate and Efficient Radar Operator Designed for CMA-GFS / MESO with Capability of Simulating Non-spherical Hydrometeors Hejun Xie, Lei Bi, and Wei Han https://doi.org/10.5281/zenodo.10058181

Hejun Xie, Lei Bi, and Wei Han

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Short summary
A radar operator plays a crucial role in utilizing Radar observations to enhance numerical weather forecasts. However, developing an advanced radar operator is challenging due to various complexities associated with the wave scattering by non-spherical hydrometeors, radar beam propagation, and multiple platforms. In this study, we introduce a novel radar operator named the Accurate and Efficient Radar Operator developed by Zhejiang University (ZJU-AERO), which boasts several unique features.