Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-17387-2018 |
The impact of multi-species surface chemical observation assimilation on air quality forecasts in China | |
Peng, Zhen1; Lei, Lili1,2; Liu, Zhiquan3; Su, Jianning1,4; Ding, Aijun1,4; Ban, Junmei3; Chen, Dan5; Kou, Xingxia5; Chu, Kekuan1,2 | |
2018-12-07 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:23 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | An ensemble Kalman filter data assimilation (DA) system has been developed to improve air quality forecasts using surface measurements of PM10, PM2.5, SO2, NO2, O-3, and CO together with an online regional chemical transport model, WRF-Chem (Weather Research and Forecasting with Chemistry). This DA system was applied to simultaneously adjust the chemical initial conditions (ICs) and emission inputs of the species affecting PM10, PM2.5, SO2, NO2, O-3, and CO concentrations during an extreme haze episode that occurred in early October 2014 over East Asia. Numerical experimental results indicate that ICs played key roles in PM2.5, PM10 and CO forecasts during the severe haze episode over the North China Plain. The 72h verification forecasts with the optimized ICs and emissions performed very similarly to the verification forecasts with only optimized ICs and the prescribed emissions. For the first-day forecast, near-perfect verification forecasts results were achieved. However, with longer-range forecasts, the DA impacts decayed quickly. For the SO(2 )verification forecasts, it was efficient to improve the SO2 forecast via the joint adjustment of SO2 ICs and emissions. Large improvements were achieved for SO2 forecasts with both the optimized ICs and emissions for the whole 72 h forecast range. Similar improvements were achieved for SO2 forecasts with optimized ICs only for the first 3 h, and then the impact of the ICs decayed quickly. For the NO2 verification forecasts, both forecasts performed much worse than the control run without DA. Plus, the 72 h O-3 verification forecasts performed worse than the control run during the daytime, due to the worse performance of the NO2 forecasts, even though they performed better at night. However, relatively favorable NO2 and O-3 forecast results were achieved for the Yangtze River delta and Pearl River delta regions. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452384100003 |
WOS关键词 | ENSEMBLE KALMAN FILTER ; VARIATIONAL DATA ASSIMILATION ; PRECURSOR EMISSIONS ; INITIAL CONDITIONS ; SULFUR-DIOXIDE ; NOX EMISSIONS ; JANUARY 2013 ; NORTH CHINA ; WRF-CHEM ; MODEL |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30822 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ, Sch Atmospher Sci, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ, Key Lab Mesoscale Severe Weather, Minist Educ, Nanjing, Jiangsu, Peoples R China; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 4.Jiangsu Prov Collaborat Innovat Ctr Climate Chang, Nanjing, Jiangsu, Peoples R China; 5.CMA, Inst Urban Meteorol, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Peng, Zhen,Lei, Lili,Liu, Zhiquan,et al. The impact of multi-species surface chemical observation assimilation on air quality forecasts in China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(23). |
APA | Peng, Zhen.,Lei, Lili.,Liu, Zhiquan.,Su, Jianning.,Ding, Aijun.,...&Chu, Kekuan.(2018).The impact of multi-species surface chemical observation assimilation on air quality forecasts in China.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(23). |
MLA | Peng, Zhen,et al."The impact of multi-species surface chemical observation assimilation on air quality forecasts in China".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.23(2018). |
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