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2nd Workshop on Mineral Dust, 10-12 Sep. 2003, Paris. 131. InterNet FAX. Forecasting. Eye. PM 10. Lidar. Satellite. Synoptic. Baengnyeongdo(102). Gwanaksan(116). Inchon(112). Anmyeondo(132). Gunsan(144). Asian dust analysis team. Heuksando(169). Hwangsa Trajectory model. RDAPS. - PowerPoint PPT Presentation
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Asian Dust Forecasting in KoreaAsian Dust Forecasting in Korea
Meteorological Research Institute, Seoul, KOREA 1) School of Earth and Environmental Sciences, Seoul National University, Seoul, KOREA
2) Department of Geosciences, University of Houston, USA
1. Introduction
3. Hwangsa Concentration Model
2. Monitoring, Warning and Forecasting System of KMA
Sang-Sam Lee, Youngsin Chun, Soon-Ung, Park1), Hee-Jin, In2)
Regional Data Assimilation and Prediction System(RDAPS) of KMA
RDAPS Domain
30 km x 30km 191 x 171 x 33 3 hr interval
Longitude (E )
Latit
ude
(N)
120110 130 140
90 100 110 120 130 140 150
50
40
30
40
30
20
Species Threshold velocity
Threshold rel. hum. Areas
Sand 7.5 m s-1 35 % 670,000 km2
Gobi 9.5 m s-1 60 % 640,000 km2
Loess 6.0 m s-1 30 % 840,000 km2
Mixed 9.2 m s-1 40 % 850,000 km2
Model Domain
30 km x 30 km 151 x 121 x 25 3 hr interval
Concentrations and number of Asian Dust events have been on the rise in recent decades(Chun et al., 2001). The Asian Dust concentrations were calculated using HCM (Hwangsa Concentration Model; a three-dimensional eulerian transport model) in spring 2003 in Korea. Meteorological dataset as input data into the HCM were obtained from the Regional Data Assimilation and Prediction System of KMA. In and Park(2002) simulated and verified the HCM in case of severe Asian dust events in 1998. The HCM produced 48 hours forecasting concentration and deposition of Asian Dust twice a day with 30km spatial resolution and 25 layers from March to May 2003. At the same periods Asian Dust intensive observation was carried out in METRI, KMA.
00UTC 12 APR 2003
Spatial distribution of vertically integrated TSP concentration with the wind vectors at the height of 1500 m using HCM.
Time-height cross sections of PM10 Concentration using HCM from00UTC 11 April to 12UTC 13 April 2003.
PM10 Concentration ( ㎍ m-3) in Urban region
12UTC 12 APR 2003
Baengnyeongdo(102)
Inchon(112)Gwanaksan(116)
Anmyeondo(132)
Gunsan(144)
Heuksando(169)
Gosan(185)
Monitoring System
Asian dust analysis
team
Forecasting
Hwangsa Trajectory model
RDAPS
131InterNet
FAX
Eye PM10 Lidar Satellite Synoptic
Forecasting SystemWarning System
PM10 Concentration ( ㎍ m-3) in west islands
ContactSang-Sam Lee : [email protected], KOREA
4. Summary a. KMA observes and monitors Asian dust events in following ways: 1) Observation with naked eyes for occurrence of Asian Dust event 2) PM10 in 7 sites (Baengnyeongdo, Inchon, Gwanaksan, Anmyeondo, Gunsan, Heuksando, Gosan)
3) Lidar measurement at the GAW observatory (Anmyeondo) for the vertical distribution 4) International meteorological information through the Global Telecommunication System with 3 hours interval 5) Satellite images obtained from NOAA, TERRA and SeaWiFs to check the location and intensity of Asian dust 6) Ministry of Environment informations obtained from 177 automatic air pollution-monitoring stations in real time
b. KMA put a Asian dust warning system in 3 steps(Alarm, Advisory and Warning) based on PM10
c. The Hwangsa Concentration Model (HCM) results are provided to the KMA intranet, and utilized for Asian dust prediction during the spring of 2003.
PM10 network in KMA.
PM10 concentrations observed byKMA at 7 stations on 12~13 April 2003.
PM10 concentrations observed on00KST 13 April 2003 byMinistry of Environment, KOREA.
HCM results (Spatial and vertical distributions)
2nd Workshop on Mineral Dust, 10-12 Sep. 2003, Paris
