Global circulation of atmospheric mercury: a modelling study
Global circulation of atmospheric mercury: a modelling study
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DOI：
10.1016/j.atmosenv.2003.08.037
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发表时间：
2004-01-01
影响因子：
5
通讯作者：
Larocque, Y
中科院分区：
文献类型：
--
作者：
Dastoor, AP;Larocque, Y
本文介绍了一个综合的全球和区域大气汞模式及其描述汞的大气循环能力。这是一个在线模型（已纳入加拿大环境预报和数据同化业务系统），可用于了解气象学在汞循环（大气路径）中的作用、汞的年际变化，并可根据全球尺度的观测结果进行评估。这是因为该模型结合了实际观测到的和预测的高分辨率大气气象状态，以整合模型，而不是现有全球汞模型中使用的气候学方法。该模型在全球范围内进行了整合和评估，仅使用人为排放量。模式较好地模拟了汞浓度的南北梯度、季节变化、干湿沉降和垂直结构。该模式被用来解释观测到的大气汞循环的季节变化。这项研究的结果包括1997年全球地面空气中总气态汞浓度的动画。皇冠版权所有（C）2003由爱思唯尔有限公司出版。保留所有权利。
This paper presents a comprehensive atmospheric global and regional mercury model and its capability in describing the atmospheric cycling of mercury. This is an on-line model (integrated within the Canadian operational environmental forecasting and data assimilation system) which can be used to understand the role of meteorology in mercury cycling (atmospheric pathways), the inter-annual variability of mercury and can be evaluated against observations on global scales. This is due to the fact that the model uses a combination of actual observed and predicted meteorological state of the atmosphere at high resolution to integrate the model as opposed to the climatological approach used in existing global mercury models. The model was integrated and evaluated on global scale using only anthropogenic emissions. North to south gradients in mercury concentrations, seasonal variability, dry and wet deposition and vertical structure are well simulated by the model. The model was used to explain the observed seasonal variations in atmospheric mercury circulation. The results from this study include a global animation of surface air concentrations of total gaseous mercury for 1997. Crown Copyright (C) 2003 Published by Elsevier Ltd. All rights reserved.