Antarctic Snowmelt

Antarctic satellite imageFrom NASA Goddard:

NASA researchers using data collected from 1987 to 2006 found snow melting in unlikely places in 2005: as far inland as 500 miles away from the Antarctic coast and as high as 1.2 miles above sea level in the Transantarctic Mountains. The 20-year data record was three times longer than previous studies and reaffirmed the extreme melting irregularity observed in 2005. During the same period, they also found that melting had increased on the Ross Ice Shelf, both in terms of the geographic area affected and the duration of increased melting across affected areas.

“Snow melting is very connected to surface temperature change, so it’s likely warmer temperatures are at the root of what we’ve observed in Antarctica,” said lead author Marco Tedesco, a research scientist at the Joint Center for Earth Systems Technology cooperatively managed by NASA’s Goddard Space Flight Center, Greenbelt, Md., and the University of Maryland at Baltimore County, Baltimore. The study will be published on Sept. 22 in the American Geophysical Union’s Geophysical Research Letters.