Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Recent Increase In Black Carbon Concentrations From A Mt. Everest Ice Core Spanning 1860–2000 Ad, S. D. Kaspari, M. Schwikowski, M. Gysel, M. G. Flanner, Kang Shichang, S. Hou, Paul A. Mayewski
Recent Increase In Black Carbon Concentrations From A Mt. Everest Ice Core Spanning 1860–2000 Ad, S. D. Kaspari, M. Schwikowski, M. Gysel, M. G. Flanner, Kang Shichang, S. Hou, Paul A. Mayewski
Climate Change Institute Faculty Scholarship
A Mt. Everest ice core spanning 1860–2000 AD and analyzed at high resolution for black carbon (BC) using a Single Particle Soot Photometer (SP2) demonstrates strong seasonality, with peak concentrations during the winter-spring, and low concentrations during the summer monsoon season. BC concentrations from 1975–2000 relative to 1860–1975 have increased approximately threefold, indicating that BC from anthropogenic sources is being transported to high elevation regions of the Himalaya. The timing of the increase in BC is consistent with BC emission inventory data from South Asia and the Middle East, however since 1990 the ice core BC record does not indicate …
Atmospheric Soluble Dust Records From A Tibetan Ice Core: Possible Climate Proxies And Teleconnection With The Pacific Decadal Oscillation, B. Grigholm, Paul A. Mayewski, Kang Shichang, Y. Zang, S. Kaspari, Sharon B. Sneed, Q. Zhang
Atmospheric Soluble Dust Records From A Tibetan Ice Core: Possible Climate Proxies And Teleconnection With The Pacific Decadal Oscillation, B. Grigholm, Paul A. Mayewski, Kang Shichang, Y. Zang, S. Kaspari, Sharon B. Sneed, Q. Zhang
Climate Change Institute Faculty Scholarship
In autumn 2005, a joint expedition between the University of Maine and the Institute of Tibetan Plateau Research recovered three ice cores from Guoqu Glacier (33°34′37.8″N, 91°10′35.3″E, 5720 m above sea level) on the northern side of Mt. Geladaindong, central Tibetan Plateau. Isotopes (δ18O), major soluble ions (Na+, K+, Mg2+, Ca2+, Cl−, NO3−, SO42−), and radionuclide (β-activity) measurements from one of the cores revealed a 70-year record (1935–2005). Statistical analysis of major ion time series suggests that atmospheric soluble …