The ozone low varies with the season, and changes strongest in winter and weakest in summer.

Based on the data sets from TOMS and SAGE II, the anomaly of ozone low center over the Tibetan Plateau in 1998 has been analyzed both in its variation process and in its vertical distribution.

Nitrous oxide exists at low levels in the atmosphere, yet is thought to be responsible for 6 percent of climate warming and also contributes to stratospheric ozone destruction.