Columnar aerosol loading and surface level atmospheric black carbon (BC) concentration over the Antarctic are examined using the measurements carried out at the Indian Antarctic stations, Bharati and Maitri, as part of the 36th Indian Scientific Expedition (2016–17) to Antarctica (ISEA). The mean aerosol optical depth (AOD) at wavelength 500 nm at Bharati is observed to be 0.101 ± 0.01, whereas that at Maitri is 0.047 ± 0.003. Columnar aerosol loading at Bharati is found to be more than two times that measured at Maitri. The daily mean surface level atmospheric BC concentration at Bharati in the Austral summer from December 2016 to February 2017 is 24 ± 16.5 ngm⁻³. Comparison of this measurement with earlier reported values over the same region indicates an increase in surface-level atmospheric BC concentration. Long-term (1997–2017) trend analysis carried out using MERRA-2 aerosol reanalysis data also corroborates the increasing trend in AOD and BC concentration with 0.005 (0.007) yr⁻¹ and 0.3 (0.27) ngm⁻³ yr⁻¹ over Bharati (Maitri) respectively. Spectral variations of aerosol absorption coefficients show absorption angstrom exponent values (AAE) close to unity (1.096 ± 0.029), which indicates that fossil fuel emission is the primary source of absorbing aerosols over this region. During the study period, air mass back trajectory analysis indicates that the sources are from the Antarctic, coastal, and southern ocean regions with no long-range transport from other continents in the southern hemisphere.

作为第 36 次印度南极洲科学考察 (2016-17) 的一部分，使用印度南极站 Bharati 和 Maitri 进行的测量来检查南极上空的柱状气溶胶负荷和表面大气黑碳 (BC) 浓度 (ISEA) ）。在 Bharati 观测到波长 500 nm 处的平均气溶胶光学深度 (AOD) 为 0.101 ± 0.01，而在 Maitri 为 0.047 ± 0.003。巴拉蒂的柱状气溶胶含量被发现是迈特里测量的两倍多。2016年12月至2017年2月的澳大利亚夏季，巴拉蒂地表大气BC浓度日平均为24±16.5ngm ^-3。将该测量值与同一地区先前报告的值进行比较表明，地表大气中的BC浓度有所增加。使用 MERRA-2 气溶胶再分析数据进行的长期（1997-2017）趋势分析也证实了Bharati 上^{AOD 和 BC 浓度的增加趋势，分别为 0.005 (0.007) yr -1}和 0.3 (0.27) ngm ^-3 yr ^-1 （迈特里）分别。气溶胶吸收系数的光谱变化显示吸收埃指数值（AAE）接近于1（1.096±0.029），这表明化石燃料排放是该地区吸收气溶胶的主要来源。研究期间，气团回程分析表明，其来源来自南极、沿海和南洋地区，没有来自南半球其他大陆的长距离输送。