06 Aug '11, 11pm

今週も暑そうですね。涼しげな写真を1枚。北極海の海氷の上にできた池。「海の上の池」という英語の標題が面白い。海水が凍っても塩分を取り込まないので,池の水が淡水というのも,当然とはいえ面白いです。

If you have never been north of the Arctic Circle, it is easy to imagine that the “ice cap” at the top of the world is a uniform sheet of white. The reality, particularly during the spring and summer melt, is a mottled landscape of white, teal, slate gray, green, and navy. The sea ice atop the Arctic Ocean can—as shown in this photograph from July 12, 2011—look more like swiss cheese or a bright coastal wetland. As ice melts, the liquid water collects in depressions on the surface and deepens them, forming melt ponds. These fresh water ponds are separated from the salty sea below and around it, until breaks in the ice merge the two. Researchers on the NASA-funded ICESCAPE mission —Impacts of Climate on Ecosystems and Chemistry of the Arctic Pacific Environment—have been examining melt ponds, the ice around them, and the waters below for three weeks, with three more to go. ...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=51335

Tweets

Eastmain Reservoir, Quebec [image] #NASA

earthobservatory.nasa.gov 06 Aug '11, 10pm

On May 19, 2011, the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite observed a work in progress i...

No Makeup Day -- Do you have one?

michellephan.com 11 Aug '11, 3pm

Hi everyone, When’s the last time you went an entire day without wearing makeup? If you’re like most women these days, it ...