News & Events

Noon seminar - Late Holocene variability in soot deposition to Antarctica

Monday, April 12, 2010, 12:00PM - 1:00PM

Speaker

Ross Edwards

Desert Research Institute

Location:

RL-3 620

Fire emissions of black carbon (soot) in the Southern Hemisphere (SH) are dominated by dry season burning in savannas of Southern Africa, Northern and Central Australia and the grasslands of South America. These emissions perturb the SH radiation budget, atmospheric chemistry and the hydrologic cycle. Transported in the atmosphere on a hemispheric scale, soot from these fires is deposited onto the Antarctic ice cap, preserving a history of SH fire emissions. We will present high temporal resolution soot ice core records from West Antarctica, South Pole and East Antarctica, which reveal large scale changes in SH soot over the past ~2400 years.