Satellite-based mapping of dust erodibility in northeast Asia
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Abstract
Windblown dust originating in China and Mongolia causes health effects and agricultural damage in its source areas and causes Asian dust events in Japan. An early warning system that could be combined with weather forecasts would be helpful in preventing serious damage. However, it is difficult to specify source areas of dust with current dust modeling systems because land surface information, including vegetation coverage and land surface soil water content, is inadequate. To find and monitor dust source regions, a semi-real-time dust erodibility map was developed based on MODIS satellite data that focuses particularly on the threshold wind speed in a target area of northeast Asia including China and Mongolia (35°–50°N, 75°–120°E). The mapping system incorporates satellite data on snow cover, areas of frozen soil, surface soil water content, and vegetation cover.
Keywords
Arid regions Asian dust Remote sensing GIS MODISNotes
Acknowledgments
This research was supported by KAKENHI Grant 25304037 and 25220201 of the Japan Ministry of Education, Culture, Sports, Science, and Technology (MEXT) and the MEXT Project for Integrated Research on Asian Dust.
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