Abstract
The ground-based ozone observation instrument, Brewer spectrophotometer (Brewer), was used to evaluate the quality of the total ozone column (TOC) produced by multiple polar-orbit satellite measurements at three stations in Antarctica (King Sejong, Jang Bogo, and Zhongshan stations). While all satellite TOCs showed high correlations with Brewer TOCs (R = ~0.8 to 0.9), there are some TOC differences among satellite data in austral spring, which is mainly attributed to the bias of Atmospheric Infrared Sounder (AIRS) TOC. The quality of satellite TOCs is consistent between Level 2 and 3 data, implying that “which satellite TOC is used” can induce larger uncertainty than “which spatial resolution is used” for the investigation of the Antarctic TOC pattern. Additionally, the quality of satellite TOC is regionally different (e.g., OMI TOC is a little higher at the King Sejong station, but lower at the Zhongshan station than the Brewer TOC). Thus, it seems necessary to consider the difference of multiple satellite data for better assessing the spatiotemporal pattern of Antarctic TOC.
Highlights
Since the early 1980s, when ozone depletion in the Antarctic stratosphere was first detected [1], the Antarctic stratospheric ozone hole has been continuously monitored and has emerged as a global environmental problem
We examined the pattern of scatterplots and the extent of linear correlations (R) among the Brewer and the satellite Level 2 and Level 3 total ozone column (TOC) values at the King Sejong (Figure 3), Jang Bogo (Figure 4), and Zhongshan station (Figure 5)
Lower correlations were found at the Jang Bogo and Zhongshan stations compared to the King Sejong station, indicating that TOCs retrieved from the Atmospheric Infrared Sounder (AIRS)
Summary
Since the early 1980s, when ozone depletion in the Antarctic stratosphere was first detected [1], the Antarctic stratospheric ozone hole has been continuously monitored and has emerged as a global environmental problem. Several studies revealed that the stratospheric ozone variation is a major factor influencing the Southern Annular Mode (SAM), a type of large-scale atmospheric circulation in the southern hemisphere [4,5]. Changes in the SAM cause the variation in the mid-latitude jet flow, which influences the tropospheric–stratospheric mass exchange [6,7] and the Antarctic sea ice distribution [8] and even temperature and precipitation in Australia [9,10]. It is very important to continuously monitor the stratospheric ozone pattern as its depletion affects both the Antarctic stratosphere and the lower atmosphere in Antarctica, Australia, and the southern hemisphere [11]
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