Editing Humidity (section)

=== Specific humidity ===
<!-- This section is linked from [[Relative humidity]] -->
''Specific humidity'' (or moisture content) is the ratio of the mass of water vapor to the total mass of the air parcel.<ref>{{cite web|last1=Seidel|first1=Dian|title=What is atmospheric humidity and how is it measured?|url=http://www.arl.noaa.gov/faq_c1.php|website=National Oceanic and Atmospheric Administration|access-date=3 March 2017|archive-url=https://web.archive.org/web/20171018232823/http://www.arl.noaa.gov/faq_c1.php|archive-date=18 October 2017|url-status=dead}}</ref> Specific humidity is approximately equal to the [[mixing ratio]], which is defined as the ratio of the mass of water vapor in an air parcel to the mass of ''dry'' air for the same parcel.  It is typically represented with the symbol ω, and is commonly used in [[HVAC]] system design.{{cn|date=December 2024}}