|
|
Dust Over Japan
| Title |
Dust Over Japan |
| Description |
Something more than clouds hovered over Japan on April 18, 2006. Dust filled the skies as well. The dust traveled to the island nation from the Gobi Desert. The Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov/ ] flying onboard the Terra [ http://terra.nasa.gov/ ] satellite took this picture on April 18. In this image, the eastward-moving, tan dust mingles with white clouds. An especially thick plume of dust heads toward the Korean Peninsula and the island of Japan from the west coast of China. The same day this picture was taken, Japan's Meteorological Agency announced that the dust storm reached Tokyo, the first such weather event in that city in six years. The agency predicted reduced visibility but no health hazards. Research results published in 2005, however, suggested that dust storms may carry bacteria from China to Japan. If the Japanese hoped others could understand the frustrations this dust storm caused, they needed to look no further than Beijing. Spring is the season for Gobi Dust storms, but this storm appeared to be unusually hard on China's citizens. According to news reports, it was the worst in five years, dumping some 300,000 tons of dust on Beijing. It was also the second dust storm to hit that city in a week. According to some reports, Chinese officials planned to seed clouds in hopes of bringing some relief. In 2005, a Nature paper examined China's changing environment. Partially worsened by human actions such as overgrazing and grassland degradation, dust storms began to increase in the 20th century. Between AD 300 and 1949, northwestern China saw a dust storm on average every 31 years. After 1990, the average jumped to one such storm per year. According to news reports, at the time this storm hit, the average rate of dust storms for the Beijing region (in northeastern China) was five or six a year. This storm was the eighth to hit the region in 2006. NASA image created by Jesse Allen, Earth Observatory, using data obtained from the Goddard Earth Sciences DAAC. [ http://daac.gsfc.nasa.gov/ ] |
|
Smog and Sand over Beijing
| Title |
Smog and Sand over Beijing |
| Description |
Pollution blanketed Beijing on March 5, 2006. The Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov/ ] flying onboard the Aqua [ http://aqua.nasa.gov/ ] satellite captured this image the same day. In this image, pollution tints nearly the entire area a uniform shade of brownish gray. Thick sediment likewise clouds the waters of Bo Hai, immediately to the southeast of the city. Only a band of white clouds contrasts with the rest of the image. A report in Nature in 2005 indicated that 75 percent of the people in China's urban areas lived below the country's air-quality standard. In Beijing, this problem was exacerbated by the city's sheer size. As of 2003, it was one of the world's megacities, home to more than 10 million residents. As of early 2006, however, the Chinese government expressed a desire to address the problem of unrestrained growth. According to news reports, the Chinese government called for slower growth through 2011, partly in hopes of fostering a cleaner environment. NASA image courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
|
|
