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The Detection of Yellow Sand with Satellite Infrared bands
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  • The Detection of Yellow Sand with Satellite Infrared bands
  • The Detection of Yellow Sand with Satellite Infrared bands
저자명
Ha. Jong-Sung,Kim. Jae-Hwan,Lee. Hyun-Jin
간행물명
大韓遠隔探査學會誌
권/호정보
2006년|22권 5호|pp.403-406 (4 pages)
발행정보
대한원격탐사학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

An algorithm for detection of yellow sand aerosols has been developed with infrared bands. This algorithm is a hybrid algorithm that has used two methods combined. The first method used the differential absorption in brightness temperature difference between $11{mu}m;and;12{mu}m;(BTD1)$. The radiation at $11{mu}m$ is absorbed more than at $12{mu}m$ when yellow sand is loaded in the atmosphere, whereas it will be the other way around when cloud is present. The second method uses the brightness temperature difference between $3.7{mu}m;and;11{mu}m(BTD2)$. This technique is sensitive to dust loading, which the BTD2 is enhanced by reflection of $3.7{mu}m$ solar radiation. First the Principle Component Analysis (PCA), a form of eigenvector statistical analysis from the two methods, is performed and the aerosol pixel with the lowest 10% of the eigenvalue is eliminated. Then the aerosol index (AI) from the combination of BTD 1 and 2 is derived. We applied this method to Multi-functional Transport Satellite-l Replacement (MTSAT-1R) data and obtained that the derived AI showed remarkably good agreements with Ozone Mapping Instrument (OMI) AI and Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth.