Markedly enhanced absorption and direct radiative forcing of black carbon under polluted urban environments
Peking University · State Key Joint Laboratory of Environment Simulation and Pollution Control · +3 more institutions
Abstract
Black carbon (BC) exerts profound impacts on air quality and climate because of its high absorption cross-section over a broad range of electromagnetic spectra, but the current results on absorption enhancement of BC particles during atmospheric aging remain conflicting. Here, we quantified the aging and variation in the optical properties of BC particles under ambient conditions in Beijing, China, and Houston, United States, using a novel environmental chamber approach. BC aging exhibits two distinct stages, i.e., initial transformation from a fractal to spherical morphology with little absorption variation and subsequent growth of fully compact particles with a large absorption enhancement. The timescales to…
Citation impact
- FWCI
- 51.58
- Percentile
- 100%
- References
- 44
Authors
16- JPJianfei PengCorresponding
Peking University, State Key Joint Laboratory of Environment Simulation and Pollution Control
- MHMin Hu
Peking University, State Key Joint Laboratory of Environment Simulation and Pollution Control
- SGSong Guo
Peking University, State Key Joint Laboratory of Environment Simulation and Pollution Control, Texas A&M University
- ZDZhuofei Du
Peking University, State Key Joint Laboratory of Environment Simulation and Pollution Control
- JZJing Zheng
Peking University, State Key Joint Laboratory of Environment Simulation and Pollution Control, Texas A&M University
Topics & keywords
- Radiative forcing
- Forcing (mathematics)
- Environmental science
- Carbon black
- Atmospheric sciences
- Pollution
- Radiative transfer
- Air pollution