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Dust phenomena recorded in ancient Korean literature |
 The first record of a dust phenomenon in Korea was found in the reign of the Silla Dynasty's King Ahdalla (174 A.D.). It was called "To-Woo (÷Ïéë)" At that time. the people believed that the god in the heaven became so angry that he lashed down dirt instead of rain or snow. This frightened the King and his subjects
considerably whenever they observed a dust
phenomenon.
During the Joseon Dynasty, there was the following record in March 22, 1549.
"Dust fell in Seoul. At Jeonju and Namwon in the Jeolla province, located in the southwestern part of Korea, there was fog that looked like smoke creeping into every corner in all directions. The tiles on the house roofs, grass on the fields, and leaves on the trees were entirely covered by yellow-brown and white dust. When the dust was swept, it wiped away like dirt, and when it was shaken
it dispersed as well. This weather condition lasted for four days.
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| The Asian dust events were most frequently observed in spring time from February to May with the maximum peak on April. In the rainy period affected by sub-tropical North Pacific high pressure, dust events seldom observed from July to September. However, wintertime had dust events as unusual. More recorded events were found in Joseon Dynasty.
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| The record shows that there was a peak during late 1930's ~ early 1940's, and increasing tendency in recent years. From 1910 to 1945, the recorded dust events were done by Japanese with some symbols "üÜÞã"(so called Hwangsa in Korean) and "∞" during the Japan Occupation Period. During the Korean War between 1950 and 1953, the records could not be made as well. In recent decades, the dust event has been recorded according to the WMO regulation by Korea Meteorological Administration (KMA). |
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| Hwangsa Monitoring and Prediction |
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| * Asian Dust Monitoring Towers in Source Regions |
| - To study on the dust outbreak mechanism in source regions |
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| * Seoul SDS(Sand and Dust Storm) monitoring Center |
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| * Intensive Field Observation Experiment of Asian Dust |
- To figure out 4-D structure of Asian dust
- To quantify the remote sensing data for the data assimilation of Asian dust |
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| * Development of Asian Dust Prediction Model |
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| * KMA monitors Asian Dust events as follows. |
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First, observation with naked eyes for occurrence of Asian dust event and Monitoring PM10 concentration with Korea-China Hwangsa Monitoring Network are performed.
Second, meteorological information through the Global Telecommunication System (GTS) with three hour-interval and satellite images obtained from MTSAT, NOAA, TERRA and SeaWiFs are used to check the location and intensity of Asian dust.
Third, the Asian dust Aerosol Model (ADAM) results simulated in super computer (CRAY X1E) are provided to the KMA intranet, and used for Asian dust prediction
Finally, PM10 concentration data of 28 sites and Lidar measurement at four sites are utilized to understand the path and vertical distribution of Asian dust.
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