Application of DARLAM to Regional Haze Modeling

Air Quality ◽  
2003 ◽  
pp. 189-204
Author(s):  
Lawrence C. C. Koe ◽  
Avelion F. Arellano ◽  
John L. McGregor
Keyword(s):  
Regional Haze

scholarly journals A 3D study on the amplification of regional haze and particle growth by local emissions

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Wei Du ◽  
Lubna Dada ◽  
Jian Zhao ◽  
Xueshun Chen ◽  
Kaspar R. Daellenbach ◽  
...  
Keyword(s):  
Atmospheric Stability ◽  
Ground Level ◽  
Particle Growth ◽  
Chemical Compositions ◽  
Size Distributions ◽  
Aerosol Composition ◽  
Regional Haze ◽  
Haze Formation ◽  
Beijing China

AbstractThe role of new particle formation (NPF) events and their contribution to haze formation through subsequent growth in polluted megacities is still controversial. To improve the understanding of the sources, meteorological conditions, and chemistry behind air pollution, we performed simultaneous measurements of aerosol composition and particle number size distributions at ground level and at 260 m in central Beijing, China, during a total of 4 months in 2015–2017. Our measurements show a pronounced decoupling of gas-to-particle conversion between the two heights, leading to different haze processes in terms of particle size distributions and chemical compositions. The development of haze was initiated by the growth of freshly formed particles at both heights, whereas the more severe haze at ground level was connected directly to local primary particles and gaseous precursors leading to higher particle growth rates. The particle growth creates a feedback loop, in which a further development of haze increases the atmospheric stability, which in turn strengthens the persisting apparent decoupling between the two heights and increases the severity of haze at ground level. Moreover, we complemented our field observations with model analyses, which suggest that the growth of NPF-originated particles accounted up to ∼60% of the accumulation mode particles in the Beijing–Tianjin–Hebei area during haze conditions. The results suggest that a reduction in anthropogenic gaseous precursors, suppressing particle growth, is a critical step for alleviating haze although the number concentration of freshly formed particles (3–40 nm) via NPF does not reduce after emission controls.

scholarly journals The Effect of Manufacturing Agglomeration on Haze Pollution in China

2018 ◽  
Vol 15 (11) ◽  
pp. 2490 ◽  
Author(s):  
Jun Liu ◽  
Yuhui Zhao ◽  
Zhonghua Cheng ◽  
Huiming Zhang
Keyword(s):  
Industrial Structure ◽  
Spillover Effects ◽  
Eastern Region ◽  
Spatial Panel ◽  
Panel Model ◽  
Specific Analysis ◽  
Haze Pollution ◽  
Regional Haze ◽  
Spatial Panel Model ◽  
Development Levels

Based on panel data on 285 Chinese cities from 2003 to 2012, we use a dynamic spatial panel model to empirically analyze the effect of manufacturing agglomeration on haze pollution. The results show that when economic development levels, population, technological levels, industrial structure, transportation, foreign direct investment, and greening levels are stable, manufacturing agglomeration significantly aggravates haze pollution. However, region-specific analysis reveals that the effects of manufacturing agglomeration on inter-regional haze pollution depends on the region: the effect of manufacturing agglomeration on haze pollution is the largest in the Western region, followed by the Central region, and is the least in the Eastern region. Based on the above conclusions, we put forward several specific suggestions, such as giving full play to the technology and knowledge spillover effects of manufacturing agglomeration, guiding manufacturing agglomerations in a scientific and rational way, accelerating the transformation and upgrading of manufacturing industries in agglomeration regions.

scholarly journals Formation and evolution mechanism of regional haze: a case study in the megacity Beijing, China

2012 ◽  
Vol 12 (7) ◽  
pp. 16259-16292 ◽  
Author(s):  
X. Liu ◽  
J. Li ◽  
Y. Qu ◽  
T. Han ◽  
L. Hou ◽  
...  
Keyword(s):  
Wind Speed ◽  
Mass Concentration ◽  
Empirical Relationship ◽  
Surface Wind ◽  
Atmospheric Environment ◽  
Evolution Mechanism ◽  
Regional Haze ◽  
Formation And Evolution ◽  
The Government

Abstract. The main objective of this study is to investigate the formation and evolution mechanism of the regional haze in megacity Beijing by analyzing the process of a severe haze that occurred 20–27 September 2011. Mass concentration and size distribution of aerosol particles as well as aerosol optical properties were concurrently measured at the Beijing urban atmospheric environment monitoring station. Gaseous pollutants (SO2, NO-NO2-NOx, O3, CO) and meteorological parameters (wind speed, wind direction, and relative humidity (RH)) were simultaneously monitored. Meanwhile, aerosol spatial distribution and the height of planetary boundary layer (PBL) were retrieved from the signal of satellite and LIDAR (light detection and ranging). Results showed that high intensity of local pollutants from Beijing urban source is the fundamental cause that led to the regional haze. Meteorological factors such as higher RH, weak surface wind speed, and decreasing height of PBL played an important role on the deterioration of air quality. New particle formation was considered to be the most important factor contributing the formation of haze. In order to improve the atmospheric visibility and reduce the occurrence of the haze, the mass concentration of PM2.5 at dry condition should be less than 60 µg m−3 in Beijing according to the empirical relationship of visibility, PM2.5 mass concentration and RH. This case study may provide valuable information for the public to recognize the formation mechanism of the regional haze event over the megacity, which is also useful for the government to adopt scientific approach to forecast and eliminate the occurrence of regional haze in China.

Implications of the Regional Haze Rule on Renewable and Wind Energy Development on Native American Lands in the West

Wind Energy ◽  
10.1002/we.88 ◽  
2003 ◽  
Vol 6 (4) ◽  
pp. 347-354
Author(s):  
Thomas L. Acker ◽  
William M. Auberle ◽  
Earl P. N. Duque ◽  
William D. Jeffery ◽  
David R. LaRoche ◽  
...  
Keyword(s):  
Native American ◽  
Wind Energy ◽  
Energy Development ◽  
The West ◽  
Regional Haze ◽  
Wind Energy Development

scholarly journals Modeling regional haze during the BRAVO study using CMAQ-MADRID: 2. Source region attribution of particulate sulfate compounds

2006 ◽  
Vol 111 (D6) ◽  
Author(s):  
Eladio M. Knipping ◽  
Naresh Kumar ◽  
Betty K. Pun ◽  
Christian Seigneur ◽  
Shiang-Yuh Wu ◽  
...  
Keyword(s):  
Source Region ◽  
Regional Haze

scholarly journals Effects of Agricultural Biomass Burning on Regional Haze in China: A Review

Atmosphere ◽  
2017 ◽  
Vol 8 (12) ◽  
pp. 88 ◽  
Author(s):  
Hongmei Zhao ◽  
Xuelei Zhang ◽  
Shichun Zhang ◽  
Weiwei Chen ◽  
Daniel Tong ◽  
...  
Keyword(s):  
Biomass Burning ◽  
Agricultural Biomass ◽  
Regional Haze

scholarly journals Exploring wintertime regional haze in Northeast China: role of coal and biomass burning

2020 ◽  
Author(s):  
Jian Zhang ◽  
Lei Liu ◽  
Liang Xu ◽  
Qiuhan Lin ◽  
Hujia Zhao ◽  
...  
Keyword(s):  
Biomass Burning ◽  
Northeast China ◽  
Climate Models ◽  
Inorganic Ions ◽  
Heterogeneous Reactions ◽  
Urban Site ◽  
Particle Analysis ◽  
Aerosol Formation ◽  
Mountain Site ◽  
Regional Haze

Abstract. As one of the intense anthropogenic emission regions across the relatively high latitude (> 40° N) areas on the Earth, Northeast China faces serious problem on regional haze during long winter with half a year. Aerosols in polluted haze in Northeast China are poorly understood compared with the haze in other regions of China such as North China Plain. Here, we for the first time integrated bulk chemical measurements with single particle analysis from transmission electron microscopy (TEM), nanoscale secondary ion mass spectrometer (NanoSIMS), and atomic force microscopy (AFM) to obtain morphology, size, composition, aging process, and sources of aerosol particles collected during two contrasting regional haze events (Haze-I and Haze-II) at an urban site and a mountain site in Northeast China, and further investigated the causes of regional haze formation. Haze-I evolved from moderate (average PM2.5: 76–108 μg/m3) to heavy pollution (151–154 μg/m3), with the dominant PM2.5 component changing from organic matter (OM) (39–45 μg/m3) to secondary inorganic ions (94–101 μg/m3). Similarly, TEM observations showed that S-OM particles elevated from 29 % to 60 % by number at urban site and 64 % to 74 % at mountain site and 75–96 % of Haze-I particles included primary OM. Change of wind direction induced that Haze-I rapidly turned into Haze-II (185–223 μg/m3) with the predominant OM (98–133 μg/m3) and unexpectedly high K+ (3.8 μg/m3). TEM also showed that K-OM particles increased from 4–5 % by number to 50–52 %. Our study revealed a contrasting formation mechanism of these two haze events: Haze-I was induced by accumulation of primary OM emitted from residential coal burning and further deteriorated by secondary aerosol formation via heterogeneous reactions; Haze-II was caused by long-range transport of agricultural biomass burning emissions. Moreover, we found that 75–97 % of haze particles contained tarballs, but only 4–23 % contained black carbon and its concentrations were low at 2.7–4.3 μg/m3. The results highlight that abundant tarballs are important light-absorbing brown carbon in Northeast China during winter haze and further considered in climate models.

Sign in / Sign up

Export Citation Format

Share Document