One hundred observations

1
One hundred observations of Asian dust events
in KoreaYoungsin Chun (???) Meteorological
Research Institute
2
Vis. 1.2 km
Vis. 6.7 km
10 LST March 23, 2002
10 LST March 21, 2002
Vis. 5 km
SEOUL
1430 LST April 8, 2002
The tallest building with 63 stairs was
gone with the dust again.
3
Dust trajectory forecasting (2 times/day)
GMS 21 March 2002
4
PM 10 Monitoring

• Kwanak Mountain
• Baekryung Island
• Global Atmosphere Watch Observatory
  (Anmyondo )
• Ministry of Environment (city)

5
2122 March 2002
3000 ug/m3
??
Warning
21 hour
Advisory
6
Asian Dust Warning (forecasting) System in Korea
Watch 300 ?/?
Advisory 500 ?/?
Warning 1,000 ?/?
since 10 Apr. 2002
7
Forecasting of Asian Dust
Analysis
8
Floating Dust (Whangsa) days in Seoul
( Chun et al., 2001 )
9
Japan Occupation period ( 1910-1945 Seoul )
10

Korea - dust code
174? 1915? 1922? 1956?
?? ?? 8
11
Floating dust days in Seoul (1915-2002)
12
Month
1915
Seoul 1930s1940s
2002
13
Observation
42 sites
14
Floating dust days in 5 cities
1915 2002
Yearly variation of Asian dust events observed in
Seoul, Mokpo, Busan, Daegu, Gangneung in Korea
during 1915 to 2002.
15
1930s 1940s
China Temperature Anomaly Quin et al., 2001
16
Asian dust Days in Spring
19611990
19712000
34 days
23 days
17

?? Blowing Sand in springtime
1993
1994
40N 100110E
1995
Chun et al., 2001
18

Blowing sand in spring 2002
40N, 100110125E
19
Summary

• 20 century dusty period 1930s 1940s
• Severe dust year 1941
• 41 days (Seoul), 21
  days (Mokpo)
• Average dust day 5 days
• Recent Source region Eastward
• Severe dust year 2002
• 
  124 days

20
Joint Monitoring network of dust storms
between CMA KMA

• Period 20032004
• Budget 600,000
• (KOICA)
• Sharing of data
• information
• Exchange of Experts
• Joint workshop
• web site

21
Asian Dust Web site
http//yellow.metri.re.kr