两种再分析资料对我国西北地区沙尘模拟的影响

付旭东; 李龙燕; 王金艳; 谭子渊; 常伟; 王明

doi:10.16803/j.cnki.issn.1004-6216.2019.02.012

环境保护科学

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付旭东, 李龙燕, 王金艳, 谭子渊, 常伟, 王明. 两种再分析资料对我国西北地区沙尘模拟的影响[J]. 环境保护科学, 2019, (2): 64-73. doi: 10.16803/j.cnki.issn.1004-6216.2019.02.012

引用本文:

FU Xudong, LI Longyan, WANG Jinyan, TAN Ziyuan, CHANG Wei, WANG Ming. Influence of Two Kinds of Reanalysis Data on Dust Simulation in Northwest China[J]. Environmental Protection Science, 2019, (2): 64-73. doi: 10.16803/j.cnki.issn.1004-6216.2019.02.012

Citation:

FU Xudong, LI Longyan, WANG Jinyan, TAN Ziyuan, CHANG Wei, WANG Ming. Influence of Two Kinds of Reanalysis Data on Dust Simulation in Northwest China[J]. Environmental Protection Science, 2019, (2): 64-73. doi: 10.16803/j.cnki.issn.1004-6216.2019.02.012

两种再分析资料对我国西北地区沙尘模拟的影响

1. 兰州大学大气科学学院半干旱气候变化教育部重点实验室, 甘肃兰州 730000;
2. 中国人民解放军 95994 部队, 甘肃酒泉 735000

作者简介: 付旭东(1993-),男,硕士研究生。研究方向:沙尘天气的数值模拟与预报。E-mail:fuxd17@lzu.edu.cn

基金项目:
国家自然科学基金面上项目(41575138,41505083)

甘肃省自然科学基金(1506RJZA208)

兰州大学中央高校基本科研业务费专项资金(lzujbky-2017-68)资助
中图分类号: X51

Influence of Two Kinds of Reanalysis Data on Dust Simulation in Northwest China

1. Key Laboratory of Semi-arid Climate Changes of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China;
2. 95994 Troops of PLA, Jiuquan 735000, China
Fund Project:

摘要: 利用耦合了Shao04起沙参数化方案的WRF/Chem模式对2014年4月22~25日发生在我国西北地区的一次沙尘天气进行了模拟,基于ERA-Interim和NECP-FNL两种再分析资料,探究了WRF/Chem在不同再分析资料提供初始场和边界条件时对沙尘天气的模拟能力,并分析了两种再分析资料对模拟结果影响的主要原因。总体来看,WRF/Chem在两种再分析资料提供初始场和边界条件时,均能较合理的模拟出主要的起沙区域、沙尘强度及其时空变化特征,沙源地附近和下游地区各个站点模拟的PM₁₀浓度时间变化特征与观测结果也较为吻合。但相比较而言,对西北地区此次沙尘天气过程,从沙尘的空间分布、沙尘浓度、垂直沙通量和地面各代表站点PM₁₀浓度变化等方面的模拟结果来看,NECP-FNL数据为模式提供初始场和边界条件时要优于ERA-Interim数据的结果,这主要与NECP-FNL数据在WRF/Chem模式中能相对较好的描述起沙过程中摩擦速度的量值有关,从而使得模拟的沙尘区域、强度和垂直沙通量更为合理。
- 再分析资料 /
- 沙尘天气 /
- WRF/Chem 模式 /
- 数值模拟 /
- 摩擦速度
Abstract: A dust event during April 22-25, 2014 over Northwest China was simulated by using the Weather Research and Forecasting with Chemistry (WRF/Chem) model, which coupled with Shao04 dust emission schemes. The influence of WRF/Chem to simulate dust event was investigated with the different reanalysis data of initial field and boundary conditions provided. A comparison with observational data shows that the main observed dust emission regions and the temporal variation of dust emission intensity are all quite well reproduced. Both near the dust source and in its downstream regions, the model-simulated temporal variation in surface PM 10 concentration agrees closely with station observations. But in comparison, when the NECP-FNL reanalysis data provides initial and boundary conditions for the model, the dust emission regions, surface dust concentration, dust emission fluxes and surface PM 10 concentration of each representative station were better than ERA-Interim reanalysis simulated date. The WRF/Chem model uses NECP-FNL reanalysis data to simulate, which can be relatively well described on friction velocity related to the dust emission process, thus making the simulation dust emission regions, intensity and emission fluxes more reasonable.
- Reanalysis Data /
- Dust Weather /
- WRF/Chem /
- Numerical Simulation /
- Friction Speed

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引用本文:

Citation:

两种再分析资料对我国西北地区沙尘模拟的影响

作者简介: 付旭东(1993-),男,硕士研究生。研究方向:沙尘天气的数值模拟与预报。E-mail:fuxd17@lzu.edu.cn
1. 兰州大学大气科学学院半干旱气候变化教育部重点实验室, 甘肃兰州 730000;

2. 中国人民解放军 95994 部队, 甘肃酒泉 735000

收稿日期: 2018-11-20

基金项目:

国家自然科学基金面上项目(41575138,41505083)

甘肃省自然科学基金(1506RJZA208)

兰州大学中央高校基本科研业务费专项资金(lzujbky-2017-68)资助

关键词:

摘要: 利用耦合了Shao04起沙参数化方案的WRF/Chem模式对2014年4月22~25日发生在我国西北地区的一次沙尘天气进行了模拟,基于ERA-Interim和NECP-FNL两种再分析资料,探究了WRF/Chem在不同再分析资料提供初始场和边界条件时对沙尘天气的模拟能力,并分析了两种再分析资料对模拟结果影响的主要原因。总体来看,WRF/Chem在两种再分析资料提供初始场和边界条件时,均能较合理的模拟出主要的起沙区域、沙尘强度及其时空变化特征,沙源地附近和下游地区各个站点模拟的PM₁₀浓度时间变化特征与观测结果也较为吻合。但相比较而言,对西北地区此次沙尘天气过程,从沙尘的空间分布、沙尘浓度、垂直沙通量和地面各代表站点PM₁₀浓度变化等方面的模拟结果来看,NECP-FNL数据为模式提供初始场和边界条件时要优于ERA-Interim数据的结果,这主要与NECP-FNL数据在WRF/Chem模式中能相对较好的描述起沙过程中摩擦速度的量值有关,从而使得模拟的沙尘区域、强度和垂直沙通量更为合理。

English Abstract

Influence of Two Kinds of Reanalysis Data on Dust Simulation in Northwest China

1. Key Laboratory of Semi-arid Climate Changes of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China;
2. 95994 Troops of PLA, Jiuquan 735000, China

Received Date: 2018-11-20

Fund Project:

Keywords:

Abstract: A dust event during April 22-25, 2014 over Northwest China was simulated by using the Weather Research and Forecasting with Chemistry (WRF/Chem) model, which coupled with Shao04 dust emission schemes. The influence of WRF/Chem to simulate dust event was investigated with the different reanalysis data of initial field and boundary conditions provided. A comparison with observational data shows that the main observed dust emission regions and the temporal variation of dust emission intensity are all quite well reproduced. Both near the dust source and in its downstream regions, the model-simulated temporal variation in surface PM 10 concentration agrees closely with station observations. But in comparison, when the NECP-FNL reanalysis data provides initial and boundary conditions for the model, the dust emission regions, surface dust concentration, dust emission fluxes and surface PM 10 concentration of each representative station were better than ERA-Interim reanalysis simulated date. The WRF/Chem model uses NECP-FNL reanalysis data to simulate, which can be relatively well described on friction velocity related to the dust emission process, thus making the simulation dust emission regions, intensity and emission fluxes more reasonable.