Effects of Asian dust events on daily asthma patients in Seoul, Korea

2013 ◽  
Vol 21 (2) ◽  
pp. 202-209 ◽  
Author(s):  
Joong-Woo Lee ◽  
Ki-Kwang Lee
Keyword(s):  
Asian Dust ◽  
Asthma Patients ◽  
Dust Events

Investigation of airborne lead concentrations in relation to Asian Dust events and air mass transport pathways

2006 ◽  
Vol 37 (12) ◽  
pp. 1809-1825 ◽  
Author(s):  
Ki-Hyun Kim ◽  
Chang-Hee Kang ◽  
Jin-Hong Lee ◽  
Kum-Chan Choi ◽  
Yong-Hoon Youn ◽  
...  
Keyword(s):  
Mass Transport ◽  
Asian Dust ◽  
Transport Pathways ◽  
Air Mass ◽  
Dust Events ◽  
Airborne Lead

Contrasting synoptic weather patterns between non-dust high particulate matter events and Asian dust events in Seoul, South Korea

2019 ◽  
Vol 214 ◽  
pp. 116864 ◽  
Author(s):  
Myung-Il Jung ◽  
Seok-Woo Son ◽  
Hyun Cheol Kim ◽  
Sang-Woo Kim ◽  
Rokjin J. Park ◽  
...  
Keyword(s):  
Particulate Matter ◽  
South Korea ◽  
Asian Dust ◽  
Weather Patterns ◽  
Synoptic Weather ◽  
Dust Events

scholarly journals The value of satellite observations in the analysis and short-range prediction of Asian dust

2019 ◽  
Vol 19 (2) ◽  
pp. 987-998 ◽  
Author(s):  
Angela Benedetti ◽  
Francesca Di Giuseppe ◽  
Luke Jones ◽  
Vincent-Henri Peuch ◽  
Samuel Rémy ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Data Assimilation ◽  
Optical Depth ◽  
Short Range ◽  
Asian Dust ◽  
Satellite Observations ◽  
Global Model ◽  
Deep Blue ◽  
Dust Events

Abstract. Asian dust is a seasonal meteorological phenomenon which affects east Asia, and has severe consequences on the air quality of China, North and South Korea and Japan. Despite the continental extent, the prediction of severe episodes and the anticipation of their consequences is challenging. Three 1-year experiments were run to assess the skill of the model of the European Centre for Medium-Range Weather Forecasts (ECMWF) in monitoring Asian dust and understand its relative contribution to the aerosol load over China. Data used were the Moderate Resolution Imaging Spectroradiometer (MODIS) Dark Target and the Deep Blue aerosol optical depth (AOD). In particular the experiments aimed at understanding the added value of data assimilation runs over a model run without any aerosol data. The year 2013 was chosen as representative of the availability of independent AOD data from two established ground-based networks (AERONET, Aerosol Robotic Network, and CARSNET, China Aerosol Remote Sensing Network), which could be used to evaluate experiments. Particulate matter (PM) data from the China Environmental Protection Agency were also used in the evaluation. Results show that the assimilation of satellite AOD data is beneficial to predict the extent and magnitude of desert dust events and to improve the short-range forecast of such events. The availability of observations from the MODIS Deep Blue algorithm over bright surfaces is an asset, allowing for a better localization of the sources and definition of the dust events. In general both experiments constrained by data assimilation perform better than the unconstrained experiment, generally showing smaller normalized mean bias and fractional gross error with respect to the independent verification datasets. The impact of the assimilated satellite observations is larger at analysis time, but lasts into the forecast up to 48 h. The performance of the global model in terms of particulate matter does not show the same degree of skill as the performance in terms of optical depth. Despite this, the global model is able to capture some regional pollution patterns. This indicates that the global model analyses may be used as boundary conditions for regional air quality models at higher resolution, enhancing their performance in situations in which part of the pollution may have originated from large-scale mechanisms. While assimilation is not a substitute for model development and characterization of the emission sources, results indicate that it can play a role in delivering improved monitoring of Asian dust optical depth.

scholarly journals Performance of KMA-ADAM3 in Identifying Asian Dust Days over Northern China

Atmosphere ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 593
Author(s):  
Sang-Boom Ryoo ◽  
Jinwon Kim ◽  
Jeong Hoon Cho
Keyword(s):  
Dust Emission ◽  
Northern China ◽  
Asian Dust ◽  
Probability Of Detection ◽  
Soil Types ◽  
Dust Source ◽  
Aerosol Model ◽  
Dust Generation ◽  
Source Regions ◽  
Dust Events

Recently, the Korea Meteorological Administration developed Asian Dust Aerosol Model version 3 (ADAM3) by incorporating additional parameters into ADAM2, including anthropogenic particulate matter (PM) emissions, modification of dust generation by considering real-time surface vegetation, and assimilations of surface PM observations and satellite-measured aerosol optical depth. This study evaluates the performance of ADAM3 in identifying Asian dust days over the dust source regions in Northern China and their variations according to regions and soil types by comparing its performance with ADAM2 (from January to June of 2017). In all regions the performance of ADAM3 was markedly improved, especially for Northwestern China, where the threat score (TS) and the probability of detection (POD) improved from 5.4% and 5.5% to 30.4% and 34.4%, respectively. ADAM3 outperforms ADAM2 for all soil types, especially for the sand-type soil for which TS and POD are improved from 39.2.0% and 50.7% to 48.9% and 68.2%, respectively. Despite these improvements in regions and surface soil types, Asian dust emission formulas in ADAM3 need improvement for the loess-type soils to modulate the overestimation of Asian dust events related to anthropogenic emissions in the Huabei Plain and Manchuria.

scholarly journals Characterization of atmospheric bioaerosols along the transport pathway of Asian dust during the Dust-Bioaerosol 2016 Campaign

2017 ◽  
Author(s):  
Kai Tang ◽  
Zhongwei Huang ◽  
Jianping Huang ◽  
Teruya Maki ◽  
Shuang Zhang ◽  
...  
Keyword(s):  
Climate Change ◽  
Bacterial Communities ◽  
Northern China ◽  
Asian Dust ◽  
Sequencing Analysis ◽  
Dapi Staining ◽  
Transport Pathway ◽  
Dust Clouds ◽  
Airborne Microbes ◽  
Dust Events

Abstract. Previous studies have shown that bioaerosols are injected into the atmosphere during dust events. These bioaerosols may affect leeward ecosystems, human health and agricultural productivity and may even induce climate change. However, bioaerosol dynamics have rarely been investigated along the transport pathway of Asian dust, especially in China, where dust events affect huge areas and massive numbers of people. Given this situation, the Dust-Bioaerosol (DuBi) Campaign was carried out over northern China, and the effects of dust events on the amount and diversity of bioaerosols were investigated. The results indicate that the number of bacteria showed remarkable increases during the dust events, and the diversity of the bacterial communities also increased significantly, as determined by means of microscopic observations with 4,6-diamidino-2-phenylindole (DAPI) staining and MiSeq sequencing analysis. These results indicate that dust clouds can carry many bacteria of various types into downwind regions and may have potentially important impacts on ecological environments and climate change. The abundances of DAPI-stained bacteria in the dust samples were one to two orders of magnitude greater than those in the non-dust samples and reached 105 ~ 106 particles m−3. Moreover, the charge capacity of yellow fluorescent particles associated with the DAPI-stained bacteria increased from 5.1 % ± 6.3 % (non-dust samples) to 9.8 % ± 6.3 % (dust samples). A beta diversity analysis of the bacterial communities demonstrated the distinct clustering of separate prokaryotic communities in the dust and non-dust samples. Actinobacteria, Bacteroidetes, Proteobacteria remained the dominant phyla in all samples. As for Erenhot, the relative amounts of Acidobacteria and Chloroflexi have a remarkable rise in dust events. Alphaproteobacteria made the major contribution of the increasing relative amounts of the phylum proteobacteria in all dust samples. In the future, the viability and activity of airborne microbes, the interactions between bioaerosols and other gaseous and solid components in the air, and the effects of bioaerosols on animals and plants, ecological environments and the climate system must be studied in depth to help us understand the behavior of bioaerosols in the air and dust clouds in greater detail.

scholarly journals Associations Between Subjective Symptoms and Serum Immunoglobulin E Levels During Asian Dust Events

2014 ◽  
Vol 11 (8) ◽  
pp. 7636-7641 ◽  
Author(s):  
Shinji Otani ◽  
Kazunari Onishi ◽  
Haosheng Mu ◽  
Takenobu Hosoda ◽  
Youichi Kurozawa ◽  
...  
Keyword(s):  
Immunoglobulin E ◽  
Asian Dust ◽  
Serum Immunoglobulin ◽  
Subjective Symptoms ◽  
Dust Events

Effects of Asian Dust Events on Daily Mortality in Nagasaki, Japan

Epidemiology ◽  
2011 ◽  
Vol 22 ◽  
pp. S130 ◽  
Author(s):  
Masahiro Hashizume ◽  
Yuji Nishiwaki ◽  
Takehiro Michikawa ◽  
Kayo Ueda ◽  
Daisuke Onozuka ◽  
...  
Keyword(s):  
Asian Dust ◽  
Daily Mortality ◽  
Dust Events
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