Enhanced light absorptivity of black carbon with air pollution development in urban Beijing, China

Yuxuan Zhang, Max Planck Institute for Chemistry, Multiphase Chemistry Department, Mainz, Germany; Max Planck Institute for Chemistry, Mainz, Germany, Qiang Zhang, Tsinghua University, Department of Earth System Science, Beijing, China, Yafang Cheng, Max Planck Institute for Chemistry, Minerva Research Group, Mainz, Germany, Hang Su, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China and Kebin He, Collaborative Innovation Center for Regional Environmental Quality, Beijing, China