The present study reports on the variability of atmospheric carbon dioxide (CO₂) and methane (CH₄) concentrations over Antarctica using data collected during the 2015–2016 and 2016–2017 as part of the Indian Scientific Expedition to Antarctica (ISEA). During the austral summer (January–March), this study examined the spatio-temporal variability in atmospheric CO₂ and CH₄ concentrations at the Indian Antarctic Stations (IAS). An average atmospheric CO₂ concentration was observed to be 396.25 ± 4.20 ppm at Bharati station during 2015-16 austral summer period, whereas CO₂ (CH₄) concentrations were 398.7 ± 0.46 ppm (1780 ± 2 ppb) and 399.1 ± 0.41 ppm (1780 ± 3 ppb) at Bharati and Maitri stations, respectively during 2016–17. During the study period, the Orbiting Carbon Observatory-2 (OCO-2) based column averaged CO₂ concentration shows similar values against records. At Bharati and Maitri, the diurnal amplitudes of CO₂ (CH₄) are varied from 0.11 ppm (0.37 ppb) to 8.90 ppm (11.44 ppb) and 0.54 ppm (1.96 ppb) to 7.30 ppm (16 ppb), respectively. In the austral summer, dominant winds at the IAS are from the east, northeast, and southeast.

本研究使用 2015-2016 年和 2016-2017 年印度南极洲科学考察 (ISEA) 期间收集的数据报告了南极洲大气二氧化碳 (CO ₂ ) 和甲烷 (CH _{4 ) 浓度的变化。}在南半球夏季（1 月至 3 月），本研究检查了印度南极站 (IAS)大气 CO ₂和 CH _4浓度的时空变化。2015-16 年夏季期间，巴拉蒂站观测到的平均大气 CO ₂浓度为 396.25 ± 4.20 ppm，而 CO ₂ (CH ₄ ) 浓度为 398.7 ± 0.46 ppm (1780 ± 2 ppb) 和 399.1 ± 0.41 ppm ( 2016-17 年期间，Bharati 和 Maitri 站分别为 1780 ± 3 ppb)。在研究期间，基于轨道碳观测站-2 (OCO-2) 的柱平均 CO ₂浓度显示与记录相似的值。_{在 Bharati 和 Maitri，CO 2} (CH ₄ )的日振幅变化范围分别为 0.11 ppm (0.37 ppb) 至 8.90 ppm (11.44 ppb) 和 0.54 ppm (1.96 ppb) 至 7.30 ppm (16 ppb)。在南半球夏季，IAS 的主导风来自东风、东北风和东南风。