Asian Dust Forecasting in Korea

1. 2nd Workshop on Mineral Dust, 10-12 Sep. 2003, Paris 131 InterNet FAX Forecasting Eye PM10 Lidar Satellite Synoptic Baengnyeongdo(102) Gwanaksan(116) Inchon(112) Anmyeondo(132) Gunsan(144) Asian dust analysis team Heuksando(169) Hwangsa Trajectory model RDAPS Gosan(185) PM10 Concentration (㎍ m-3) in west islands PM10 Concentration (㎍ m-3) in Urban region Asian Dust Forecasting in Korea Sang-Sam Lee, Youngsin Chun, Soon-Ung, Park1), Hee-Jin, In2) 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 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. 2. Monitoring, Warning and Forecasting System of KMA Monitoring System Warning System Forecasting System PM10 concentrations observed by KMA at 7 stations on 12~13 April 2003. PM10 concentrations observed on00KST 13 April 2003 byMinistry of Environment, KOREA. PM10 network in KMA. 3. Hwangsa Concentration Model Regional Data Assimilation and Prediction System(RDAPS) of KMA HCM results (Spatial and vertical distributions) 00UTC 12 APR 2003 12UTC 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. 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. RDAPS Domain 30 km x 30km 191 x 171 x 33 3 hr interval Model Domain 30 km x 30 km 151 x 121 x 25 3 hr interval Contact Sang-Sam Lee : leess@metri.re.kr, KOREA