| SWAN2.0系统的设计与实现 |
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| 引用本文： | 韩丰,沃伟峰.SWAN2.0系统的设计与实现[J].应用气象学报,2018,29(1):25-34. |
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| 作者姓名： | 韩丰 沃伟峰 |
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| 作者单位： | 1.国家气象中心, 北京 100081 |
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| 基金项目： | 中国气象局“2015年山洪地质灾害防治气象保障工程建设” |
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| 摘 要： | 强对流天气短时临近预报系统（Severe Weather Automatic Nowcasting，SWAN）是面向短时临近监测、分析、预报、预警制作等功能为一体的业务平台。SWAN2.0基于MICAPS4（Meteorological Information Comprehensive Analysis and Processing System Version 4.0，人机交互气象信息处理和天气预报制作系统）二次开发框架，采用C/S架构，服务器部署在省级，负责收集数据，运算SWAN产品；客户端部署在气象台站，实现具体的预报业务，并形成算法二次开发接口。SWAN2.0新增了三维变分风场反演、基于分雨团技术的雷达降水估测、冰雹识别等方法，实现了算法管理、产品生成、分析处理、资料检索显示、实时监控报警、预警产品制作等功能。SWAN2.0业务系统已在全国试用，在强对流天气监测、分析和短时临近预报预警中发挥了重要作用。
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| 关 键 词： | 强对流天气短时临近预报系统 多源数据 综合监测 预报预警 |
| 收稿时间： | 2017/7/25 0:00:00 |
| 修稿时间： | 2017/12/1 0:00:00 |
Design and Implementation of SWAN2.0 Platform |
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| Han Feng and Wo Weifeng.Design and Implementation of SWAN2.0 Platform[J].Quarterly Journal of Applied Meteorology,2018,29(1):25-34. |
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| Authors: | Han Feng and Wo Weifeng |
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| Institution: | 1.National Meteorological Center, Beijing 1000812.Ningbo Meteorological Observatory of Zhejiang Province, Ningbo 315012 |
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| Abstract: | Severe Weather Automatic Nowcasting System 2.0(SWAN2.0) is a short-term nowcasting operational platform of CMA, providing nowcasting products and an early warning product generation tool. SWAN2.0 includes three types of meteorological products. Observation products, mainly composed of radar puzzles and automatic weather station(AWS) observations. Alarm products, including AWS elements alarms and radar echo alarms. Nowcasting products, providing 0-1 h radar echo forecast by COTREC movement vector and the tracking and forecasting of convection storm by SCIT (Storm Cell Identification and Tracking) or TITAN(Thunderstorm Identification, Tracking, Analysis and Nowcasting). SWAN2.0 is based on MICAPS4(Meteorological Information Comprehensive Analysis and Processing System Version 4) development framework, using C/S architecture. The server of SWAN2.0 is a scheduling platform of meteorological algorithm, which is deployed at the provincial meteorological administration, in charge of collecting data, running algorithm, and generating SWAN products. The client of SWAN2.0 is a complete working platform for weather forecasters deployed in national, provincial, and municipal meteorological observatories, which are used to display SWAN products, make analysis and produce weather forecast products. SWAN2.0 adopts new nowcasting technologies, such as three-dimensional variation assimilation retrieval of wind field, QPE(quantity precipitation estimation) by rain cluster, hail identification and meso-scale numerical model application, supporting weather forecasters to extend from traditional short-term weather forecasts and services to short-range and nowcasting forecasts of classified strong convective weather.SWAN2.0 integrates computer technology and forecasting technology to solve short-term forecasting problems. It uses the message queue to decouple business modules to enhance the flexibility and scalability of the platform, and can generate early warning produces automatically from alarm products. The hierarchical structure is adopted to optimize the design of the alarm module, and the alarm module efficiency is improved with pipeline filter model and asynchronous technology.In addition, SWAN2.0 adds two common data models, grid data model and feature data model, creating easy access to local products.In short, SWAN2.0 is not only a operational platform for forecaster but also a set of open data platform and development environment. It provides data services of real-time radar, automatic station and basic short-term nowcasting data, open operating environment and display terminal for the station, and provides support for station localization algorithm development.SWAN2.0 is released in July 2016, and popularized in nationwide. It provides an important foundation and reference for routine nowcasting operation. |
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| Keywords: | Severe Weather Automatic Nowcasting System(SWAN) multi-source data integrated monitoring forecasting and warning |
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