Carbonaceous Aerosols in a Karst Plateau City of Southwest China: Interannual Variation, Source Apportionment and Regional Transport - Tianqin Cai; Peng Xu; Zirui Liu; Yunwu Li; Guangxuan Yan; Xuehai Fei; Aping Niu; Shouyang He; Bo Hu; Aijiang Yang (Water, Air, & Soil Pollution, 2026)