scholarly journals Changes in Aerosol Optical and Micro-Physical Properties over Northeast Asia from a Severe Dust Storm in April 2014

2016 ◽  
Vol 8 (5) ◽  
pp. 394 ◽  
Author(s):  
Li Fang ◽  
Shupeng Wang ◽  
Tao Yu ◽  
Xingfa Gu ◽  
Xingying Zhang ◽  
...  
Keyword(s):  
Physical Properties ◽  
Dust Storm ◽  
Northeast Asia ◽  
Severe Dust Storm

scholarly journals Measurements and modelling of particulate matter building ingress during a severe dust storm event

2020 ◽  
Vol 167 ◽  
pp. 106441 ◽  
Author(s):  
Christos D. Argyropoulos ◽  
Hala Hassan ◽  
Prashant Kumar ◽  
Konstantinos E. Kakosimos
Keyword(s):  
Particulate Matter ◽  
Dust Storm ◽  
Storm Event ◽  
Dust Storm Event ◽  
Severe Dust Storm

scholarly journals An Ensemble Kalman Filter for severe dust storm data assimilation over China

2008 ◽  
Vol 8 (11) ◽  
pp. 2975-2983 ◽  
Author(s):  
C. Lin ◽  
Z. Wang ◽  
J. Zhu
Keyword(s):  
Kalman Filter ◽  
Data Assimilation ◽  
Dust Storm ◽  
Ensemble Kalman Filter ◽  
Deposition Velocity ◽  
Dust Storms ◽  
Initial Time ◽  
Model Errors ◽  
The Impact ◽  
Severe Dust Storm

Abstract. An Ensemble Kalman Filter (EnKF) data assimilation system was developed for a regional dust transport model. This paper applied the EnKF method to investigate modeling of severe dust storm episodes occurring in March 2002 over China based on surface observations of dust concentrations to explore the impact of the EnKF data assimilation systems on forecast improvement. A series of sensitivity experiments using our system demonstrates the ability of the advanced EnKF assimilation method using surface observed PM10 in North China to correct initial conditions, which leads to improved forecasts of dust storms. However, large errors in the forecast may arise from model errors (uncertainties in meteorological fields, dust emissions, dry deposition velocity, etc.). This result illustrates that the EnKF requires identification and correction model errors during the assimilation procedure in order to significantly improve forecasts. Results also show that the EnKF should use a large inflation parameter to obtain better model performance and forecast potential. Furthermore, the ensemble perturbations generated at the initial time should include enough ensemble spreads to represent the background error after several assimilation cycles.

Analysis on the chemical and physical properties of particles in a dust storm in spring in Beijing

2003 ◽  
Vol 137 (1-2) ◽  
pp. 77-82 ◽  
Author(s):  
Renjian Zhang ◽  
Mingxing Wang ◽  
Xiaoye Zhang ◽  
Guanghua Zhu
Keyword(s):  
Physical Properties ◽  
Dust Storm

scholarly journals Sand/dust storm processes in Northeast Asia and associated large-scale circulations

2008 ◽  
Vol 8 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Y. Q. Yang ◽  
Q. Hou ◽  
C. H. Zhou ◽  
H. L. Liu ◽  
Y. Q. Wang ◽  
...  
Keyword(s):  
Dust Storm ◽  
General Circulation ◽  
Large Scale ◽  
Transition Period ◽  
Northeast Asia ◽  
Lower Troposphere ◽  
Northern China ◽  
Wind Anomaly ◽  
Cold Air ◽  
Sand Dust

Abstract. This paper introduces a definition of sand/dust storm process as a new standard and idea of sand/dust storm (SDS) groups a number of SDS-events in Northeast Asia. Based on the meteorological data from WMO/GOS network, 2456 Chinese surface stations and NCEP-NCAR reanalysis, the sand/dust storm processes in Northeast Asia in spring 2000–2006 are investigated. And the evolutions of anomalies of general circulation in the troposphere are analyzed by comparing the spring having most and least occurrences of SDS in year 2006 and 2003. Associated with the noticeably increased occurrence of SDS processes in spring 2006, the anomalies in 3-D structure of general circulation especially in the mid-and high latitudes of the Northen Hemisphere (NH) are revealed. The transition period from the winter of 2005 to spring 2006 has witnessed a fast-developed high center over the circumpolar vortex area in the upper troposphere, which pushes the polar vortex more southwards to mid-latitudes with a more extensive area over the east NH. In spring 2006, there are the significant circulation anomalies in the middle troposphere from the Baikal Lake to northern China with a stronger southward wind anomaly over Northeast Asia. Compared with a normal year, stronger meridional wind with a southward wind anomaly also in the lower troposphere prevail over the arid and semiarid regions in Mongolia and northern China during spring 2006. The positive anomalies of surface high pressure registered an abnormal high of 4–10 hPa in the Tamil Peninsular make a stronger cold air source for the repeated cold air outbreak across the desert areas in spring 2006 resulting in the most frequent SDS seasons in the last 10 years in Northeast Asia.

scholarly journals Studies on a Severe Dust Storm in East Asia and Its Impact on the Air Quality of Nanjing, China

2013 ◽  
Vol 13 (1) ◽  
pp. 179-193 ◽  
Author(s):  
Xiao-Xian Huang ◽  
Ti-Jian Wang ◽  
Fei Jiang ◽  
Jing-Biao Liao ◽  
Yan-Feng Cai ◽  
...  
Keyword(s):  
Air Quality ◽  
East Asia ◽  
Dust Storm ◽  
Severe Dust Storm

Investigation of aerosol optical, physical, and radiative characteristics of a severe dust storm observed over UAE

2015 ◽  
Vol 169 ◽  
pp. 404-417 ◽  
Author(s):  
Ghouse Basha ◽  
D.V. Phanikumar ◽  
K. Niranjan Kumar ◽  
T.B.M.J. Ouarda ◽  
P.R. Marpu
Keyword(s):  
Dust Storm ◽  
Radiative Characteristics ◽  
Severe Dust Storm
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