Century-long record of black carbon in an ice core from the Eastern Pamirs: Estimated contributions from biomass burning

We analyzed refractory black carbon (rBC) in an ice core spanning 1875–2000 AD from Mt. Muztagh Ata, the Eastern Pamirs, using a Single Particle Soot Photometer (SP2). Additionally a pre-existing levoglucosan record from the same ice core was used to differentiate rBC that originated from open fires...

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Bibliographic Details
Published in:Atmospheric Environment
Main Authors: Wang, Mo, Xu, Baiqing, Kaspari, Susan D., Gleixner, Gerd, Schwab, Valérie F., Zhao, Huabiao, Wang, Hailong, Yao, Ping
Format: Text
Language:unknown
Published: ScholarWorks@CWU 2015
Subjects:
Pamirs
Ice core
Black carbon
Levoglucosan
Combustion sources
Atmospheric Sciences
Climate
Environmental Indicators and Impact Assessment
Environmental Monitoring
Glaciology
ice core
Online Access:https://digitalcommons.cwu.edu/geological_sciences/96
https://doi.org/10.1016/j.atmosenv.2015.05.034
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Summary:We analyzed refractory black carbon (rBC) in an ice core spanning 1875–2000 AD from Mt. Muztagh Ata, the Eastern Pamirs, using a Single Particle Soot Photometer (SP2). Additionally a pre-existing levoglucosan record from the same ice core was used to differentiate rBC that originated from open fires, energy-related combustion of biomass, and fossil fuel combustion. Mean rBC concentrations increased four-fold since the mid-1970s and reached maximum values at end of the 1980s. The observed decrease of the rBC concentrations during the 1990s was likely driven by the economic recession of former USSR countries in Central Asia. Levoglucosan concentrations showed a similar temporal trend to rBC concentrations, exhibiting a large increase around 1980 AD followed by a decrease in the 1990s that was likely due to a decrease in energy-related biomass combustion. The time evolution of levoglucosan/rBC ratios indicated stronger emissions from open fires during the 1940s–1950s, while the increase in rBC during the 1980s–1990s was caused from an increase in energy-related combustion of biomass and fossil fuels.

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