Continental export efficiencies and delineation of sources for trace gases and black carbon in North-East India: Seasonal variability

摘要: Abstract The Indo Gangetic Plain (IGP) has been identified from back-trajectory analyses, as one of the most potential region affecting species transport to Northeastern India (NER). continental export efficiency (ee) BC, NO x and SO 2 within boundary layer is estimated in order examine how efficiently these chemical are transported towards NER. For this measurements carried out at Dibrugarh, a wet tropical location NER during 2012–2013 have used references estimation enhancements above their background. CO passive tracer due its longer lifetime atmosphere. emission estimates , IGP adopted inventories REAS INTEX-B. highest winter (DJF) for BC whereas shows maximum monsoon (JJAS). efficient transportation/removal exhibits ee values compared other species. on hand get transformed shortly after into atmosphere hence less study region. CO, expected supplement NER, which further studied through annual variability distribution Dibrugarh. Pearson correlation analyses with similarity or dissimilarity among sources.