Posts Tagged ‘ china ’

2 to 7 million tons of yellow sand from China blow over Japan every year

Researchers at the National Institute for Environment Studies have determined the amount of yellow sand that blows over to Japan from China:

Yellow sand storms occur mainly in the Gobi desert in China, with winds carrying the sand to Japan and South Korea. The three countries have worked together to improve sand observation systems, which now can spot a source in a 40-kilometer radius, improved from the previous 80 to 100-km radius.

According to recent data, 100 million tons of yellow sand blows from the Gobi desert every year. About 2 to 7 million tons come to Japan, of which about 1.8 million tons on average (around 1 to 5 tons per 1 square kilometer) land on the country every year. Peak months are between February and April.

The number of occurrences of yellow sand falling in the country has continued to rise since 1988, frequently exceeding 300 days per year. The quantity is also increasing, according to 85 meteorological observatories in the country.

As mentioned in an earlier post on Japan Probe, clouds of air pollution drifting towards Japan from the continent can be viewed on this site (yellow sand is the orange map on the upper left).

how it is in China