Please revise your manuscript according to the reviewers' recommendations.

I still notice several issues with the language usage in the current version and ask for additional effort to improve its readability. Below are a few examples.
Abstract, 1st line, the phrase is awkward “Air stagnation is an important meteorological measurement”. Change “measurement” to “measure” or “reflection”.
The next sentence “We conducted a comprehensive investigation of air stagnation in China, based on sounding and surface observations of 81 stations, from January 1985 to December 2014.” to “We conducted a comprehensive investigation of air stagnation in China from January 1985 to December 2014, based on sounding and surface observations of 81 stations”.
Change “The stagnation criteria were revised to be topographically dependent for the great physical diversity in this country” to “The stagnation criteria were revised to account for the large topographical diversity in this country”.
The phrase “Dependence degrees” is confusing.
Page 3, line 18, please avoid using the progressive tense “Our focus in the current study is investigating”.
Also, I believe that it is important to include some discussion on the possible effects of the aerosol indirect effect on air stagnation in China. It has been clearly shown that long-term cloud properties and precipitation have been significantly modified by highly elevated aerosols in China, as evident by suppressed light rainfall but intensified heavy rainfall (Wang et al., Long-term impacts of aerosols on precipitation and lightning over the Pearl River Delta megacity area in China, Atmos. Chem. Phys. 11, 12421, 2011).