ENVIRSC 1C03 Lecture Notes - Lecture 7: Vapor Pressure, Fluid Parcel, Humidity

• School: McMaster University
• Department: Environmental Science
• Course: ENVIRSC 1C03
• Professor: Luc Bernier

Document Summary

Humidity: is the amount of water vapour in the air; refers to the vapour in the air not the solid or liquid states of water like ice, snow or rain. Lower amounts of water vapour in the atmosphere. Higher amounts of water vapour in the atmosphere. Absolute humidity: is the mass of water vapour/volume of air; not commonly used because air volume changes frequently. A change in absolute humidity doesn"t necessarily mean that the amount of moisture in the atmosphere has changed. An increase in the volume results in the decrease of absolute humidity. A decrease in the volume results in the increase of absolute humidity. Specific humidity: represents a given mass of water vapour in a given mass of air; does not change as air expands or contracts; provides a more reliable estimate (cid:1845)(cid:1857)(cid:1855)(cid:1858)(cid:1855) (cid:1834)(cid:1873)(cid:1865)(cid:1856)(cid:1872)=(cid:1839)(cid:1845)(cid:1845) (cid:1841)(cid:1832) (cid:1849)(cid:1846)(cid:1831)(cid:1844) (cid:1848)(cid:1842)(cid:1841)(cid:1847)(cid:1844) (cid:4666)(cid:1859)(cid:4667) (cid:1839)(cid:1845)(cid:1845) (cid:1841)(cid:1832) (cid:1846)(cid:1841)(cid:1846)(cid:1838) (cid:1835)(cid:1844) (cid:4666)(cid:1863)(cid:1859)(cid:4667)