You may believe the "atmosphere is undeniably cooling for the past 7 years", but you need to define some kind of statistical calculation to define cooling, in scientific, mathematical terms, considering the year to year fluctuations in the data, in order to determine whether your statement has any truth or meaning.
Methinks 'cooling' over recent years is as well substantiated as the earlier 'warming'.
The definition of both as regards scientific, mathematical terms is equally lacking given the deficiencies of our sensors and methods.
There was clearly some warming and now some cooling but the assessment of the amount of each is highly debatable. Use of words such as 'unprecedented' has never been justified.
Causation is wide open and hardly 'settled'.