NASAのインスタグラム(nasagoddard) - 6月21日 09時53分

Smoke Engulfs Singapore -- On June 19, 2013, NASA’s Aqua satellite captured a striking image of smoke billowing from illegal wildfires on the Indonesian island of Sumatra. The smoke blew east toward southern Malaysia and Singapore, and news media reported that thick clouds of haze had descended on Singapore, pushing pollution levels to record levels.

Singapore’s primary measure of pollution, the Pollutant Standards Index (PSI)—a uniform measure of key pollutants similar to the Air Quality Index (AQI) used by the U.S. Environmental Protection Agency—spiked to 371 on the afternoon of June 20, 2013, the highest level ever recorded. The previous record occurred in 1997, when the index hit 226. Health experts consider any level above 300 to be “hazardous” to human health. Levels above 200 are considered “very unhealthy.” #nasa #nasagoddard #wildfire

[BIHAKUEN]UVシールド(UVShield)

>> 飲む日焼け止め！「UVシールド」を購入する