In what ways does atmosphere assist in weathering?

Atmosphere assists in weathering due to its various elements that participate in disintegration of rocks. The factors of atmosphere that affect weathering are:

1. Temperature - The diurnal and seasonal variation of temperature weakens the rocks and finally leads to their weathering by peeling.
2. Air(wind) - Winds as source of weathering are more effective in arid areas. The sand particles strike the soft rocks and slowly erode them.
3. Rain and flowing water - Water and frost are also important agents of mechanical weathering. The atmosphere contains oxides of sulphur and nitrogen that result in acid rain. Rain water dissolves some of minerals and cause chemical weathering.