Lecture 2: Introduction to humidity - part I - mixing ratio and dew point
UPDATE: I'm making materials available for all of my lectures on my website (melstrong.org) for either those bored folks stuck at home due to the virus or teachers looking for online content. For this lecture I have some practice problems regarding mixing ratio and dew point with answer keys.
First lecture on humidity. Covers mixing ratio and dew point, plus a little about atmospheric composition. The next lecture after this covers relative humidity.
This was originally part of the Blue Planet lecture series at the University of New Mexico. If you are interested in weather, this lecture is now part of my "weather short course" playlist, where there are another ~15 videos similar to this one.