About关于MEIC

Multi-resolution Emission Inventory (MEIC) is a technology-based bottom up air pollutant and greenhouse gas inventories from anthropogenic sources, which is developed and maintained on the basis of cloud computing platform by Tsinghua University. Designed to provide uniform, précis, and up-to-date data for scientific research, policy assessment and air quality management, MEIC is capable of offering a rich emission data from 1990 to the present with high spatial resolution.

中国多尺度排放清单模型 (Multi-resolution Emission Inventory for China,简称MEIC)是一套基于云计算平台开发的中国大气污染物和温室气体人为源排放清单模型,旨在为科学研究、政策评估和空气质量管理等工作提供规范、准确、更新及时的高分辨率动态排放清单数据产品,由清华大学开发和维护。

Objective发展目标

Anthropogenic emissions in China are continuously rising in recent years, positioning negatively impacts on environment and climate. How to quantify emission fluxes and explore its relationship with human activities is of great interests in both scientific research and policy management. Accurate, complete and timely-updated emission inventories are essential to identify emission sources and necessary for policy making and air quality management.

近年来中国人类活动导致的大气污染物排放持续增加,对环境和气候产生重要影响。如何准确估算这些污染物的排放量和时空分布,表征排放的时空变化趋势,探究人类活动对排放的影响机理,一直是科学界关注的热点。而在支持空气质量管理决策的技术体系中,构建准确、完整、更新及时的大气污染物排放清单是识别污染来源的基础环节,也是制订污染控制策略的根本依据。

With the fast industrialization and urbanization, the air pollutants in China have been changing rapidly in terms of spatial and temporal dimensions, which pose a great challenge on the quantification work. Such complex emissions call for a higher technic to accurately reflect the emission fluxes. However, the unified emission inventory technology in China has not been established yet. Existing inventories applied diversity of technologies and are limited to large uncertainties, low resolution, and low efficiency in data update, which is hard to satisfy the policy making and scientific research requirement.

因快速工业化和城市化,我国目前的大气污染排放源体系在世界上技术构成最复杂、时空变化最迅速,对排放清单技术在准确定量、及时更新和高分辨率方面提出了难度极高的科技要求。而中国尚未建立官方的排放清单技术体系,已有的排放清单普遍存在源分类体系和计算方法不同、排放计算结果不确定性大、清单时空分辨率不足、数据更新不及时等一系列问题,难以有效支撑相关领域的科学研究和决策制订过程。

To solve these problems, we developed MEIC model on the basis of Tsinghua University’s rich practical experiences in emission source quantification and modern computer science and network technologies. The MEIC model is composed of source categorization, technology turnover model, emission factor database and high-resolution emission processing system. MEIC is fully integrated on the cloud-computing platform, which allows users to conveniently access all customized emission products online.

为了解决上述问题,我们依托清华大学在大气排放源定量表征领域的雄厚技术积累,以构建规范、准确、实用且具备动态更新功能的高分辨率大气污染物排放清单技术体系及数据集产品为目标,通过建立源分类分级体系和排放因子数据库,研发基于技术和动态过程的排放清单技术,开发多尺度高分辨率排放源模式,并在此基础上基于云计算平台技术进行集成,建立中国多尺度排放清单模型(MEIC),为科学研究、政策评估和空气质量管理等工作提供规范、准确、更新及时的高分辨率动态排放清单数据产品。

In future, our team will devote full effort to development of the MEIC into an open and world-class emission model and provide high quality technical support for scientific research and policy-making.

未来,我们将整合多方力量,将MEIC模型打造成开放的、世界一流的排放清单模型平台,为科学研究和管理决策持续提供高质量的技术支持。

Features模型特色

  • Include ten pollutants and greenhouse gases (i.e., SO2, NOx, CO, NMVOC, NH3, CO2, PM2.5, PM10, BC, and OC) from more than 700 sources.
  • Use unified methodology and dataset to assure of transparency and comparability. Version management for code and data.
  • Integrate the up-to-date dynamic methodology and local emission factor database.
  • Provide model-ready emission input for air quality models with high spatial and temporal resolutions.
  • Build data interfaces to local emission inventories.
  • Provide gridded emissions online on the cloud computing platform.
  • 涵盖10种主要大气污染物和温室气体(SO2、NOx、CO、NMVOC、NH3、CO2、PM2.5、PM10、BC和OC)和700多种人为排放源;
  • 基于统一的方法学和基础数据建立,版本化管理,方法和数据透明且易于比较;
  • 集成了最新的动态排放清单方法和本地化的排放因子数据库;
  • 与空气质量模型无缝链接,提供可供模型直接使用的多层嵌套高时空分辨率排放清单;
  • 提供数据接口,实现与本地排放清单的对接;
  • 基于云计算技术,提供网格化排放清单在线计算和数据下载。

Histories发展历程

The MEIC model was developed since 2010. We finished MEIC version 1.0 and brought it online in 2012. In the beginning of 2015, we updated and released MEIC version 1.2.

依托大气污染物排放清单领域多年的技术积累,我们于2010年启动了MEIC模型开发工作。经过两年左右的研发,于2012年完成并发布v.1.0版本,同时MEIC模型网站上线试运行,提供网格化排放清单的在线计算和下载。2015年初正式发布v1.2版本。

Until now, the MEIC model has been used by more than 100 institutions worldwide. In China, it has been widely used for air pollution cause analysis, air pollution forecast and warning, and air pollution control plans development. The MEIC model also supports several international research projects such as MICS and HTAP. Tens of relevant papers have been published until 2014.

目前,基于MEIC模型开发的排放清单数据已被国内外超过100家研究机构和业务单位广泛使用,在国际上支持了MICS、HTAP等多个大型研究计划,在国内被广泛用于污染成因分析、空气质量预报预警、空气污染达标规划等方面的工作。截至2014年底,与MEIC模型相关的研究已在国际学术期刊上发表文章数十篇。

Sponsorship支持机构

The development and maintenance of MEIC model are sponsored by:

  • National Natural Science Foundation of China, grant no. 41222036
  • China’s National Basic Research Program, grant no. 2010CB951803
  • China’s National High Technology Research and Development Program, grant no. 2006AA06A305
  • Tsinghua University Initiative Research Program, grant no. 2011Z01026
  • Energy Foundation China
  • State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex
  • Ministry of Education Key Laboratory for Earth System Modeling

MEIC模型的开发和维护受到以下机构和项目的支持:

  • 环境保护部
  • 中国国家自然科学基金(41222036)
  • 国家重点基础研究发展计划(2010CB951803)
  • 国家高技术研究发展计划(863计划,2006AA06A305)
  • 清华大学自主科研计划(2011Z01026)
  • 能源基金会中国可持续能源项目
  • 国家环境保护大气复合污染来源与控制重点实验室
  • 地球系统数值模拟教育部重点实验室