Ozonesonde data between February 2016 and July 2019 from the Indian Antarctic station ‘Bharati’ were used for validation of total ozone columns (TCOs) and vertical profiles from satellite-based Ozone Monitoring Instrument (OMI) and Microwave Limb Sounder (MLS) instruments. Bharati falls in and out of the ‘ozone hole’ over Antarctica due to the dynamics of the polar vortex, which results in drastic variability. Results show that while both the satellites captured the annual variability in the TCOs, OMI overestimates it by 66.3 DU, i.e. approximately 33% (range: 2.4 to 189.7 DU), while MLS overestimates it by 33.8 DU, i.e. approximately 16% (range: 95.9 to 8.6 DU) compared to the ozonesondes. MLS reproduced the vertical profile variation and peak heights of the ozone layer but overestimated the concentrations compared to the ozonesondes. The overestimation varied with season, with the largest difference during the ozone depletion season in September-October-November (SON: ~40%). MLS and ozonesondes linear fits showed that although the datasets showed good correlation (R² = 0.97, P < 0.001), there was a significant positive bias in the MLS observations (slope = 1.32 ± 0.38; intercept = 0.55 ± 0.05). This overestimation by MLS also results in an overestimation in the heating rates over Bharati, with the difference peaking in SON at 0.4 ± 0.2 K day⁻¹.

2016年2月至2019年7月间，印度南极``巴拉蒂''站的臭氧探空仪数据用于验证总臭氧柱（TCO）和卫星臭氧监测仪（OMI）和微波探空仪（MLS）仪器的垂直剖面。由于极地涡旋的动力学，巴拉蒂（Bharati）掉入南极的“臭氧洞”，并导致剧烈的变化。结果表明，虽然两颗卫星都捕获了TCO的年度变化，但OMI高估了66.3 DU，即约33％（范围：2.4至189.7 DU），而MLS高估了33.8 DU，即约16％（范围： 95.9至8.6 DU）。MLS再现了臭氧层的垂直剖面变化和峰高，但与臭氧探空仪相比，高估了浓度。高估随季节而变化，在9月至10月至11月的臭氧消耗季节中，差异最大（SON：〜40％）。MLS和臭氧探空仪线性拟合表明，尽管数据集显示出良好的相关性（R²  = 0.97，P <0.001），在MLS观测中存在明显的正偏差（斜率= 1.32±0.38；截距= 0.55±0.05）。MLS的这种高估也会导致Bharati上的升温速率被高估，SON的差异在0.4±0.2 K day ^-1达到峰值。