This is a supplemental view of the work at my previous post.   Until I viewed the same data in this hemispherical approach, I wasn’t aware of the apparent spiral flavor to the waves of atmospheric moisture for the full atmosphere on a monthly resolution.  Picture the tilted Earth as the seasons advance, and one can more easily understand the blue sub equatorial moisture reaching the mid latitude westerlies of the Northern Hemisphere by summer, upon which that moisture collides and passes across the Pacific Coast of North America.  The sharp and deep blue line of that encounter is clear in this animation.  Moreover, as the fall advances to winter, the subequatorial moisture band retreats to the south and the westerly flows of atmospheric moisture accordingly diminish.  This also is clear from the southern migration and fading of the Pacific coastal blue band just mentioned.

I happen to think that everything one can observe from this animation fits with overall moisture circulation characterizations.  But longer time scales for averaging almost always prove enlightening as well.  For example as many others, I often review an annual scale and thereby filter out the seasons.  This is helpful to my work but appears to cause problems with other researchers.

The annual flow of atmospheric moisture around the Southern Hemisphere provide an example.  I have found in past posts of mine under the Ozone Category, that ozone hole researchers persistently disregard moisture.   Here is an excerpt of an ozone monitoring effort over roughly 17 years across the Southern Hemisphere.*

The path of ozone correlates with the path of atmospheric moisture, as the animation below proves (qualitatively for now).  Perhaps as I speculated in a recent post, the bulk of circulating ozone derives from the lightning that is associated with the high precipitation.

click to animate

Few appear to realize that ozone researchers point exclusively to other causes and effects, while wholly disregarding the high correlations of ozone to moisture.   I would be curious to know, if the southern hemisphere connection is apparent to any reader, why is it not apparent to any ozone climate scientist?  Readers are encouraged to ask that of their local or other subject matter experts.

*the original source of the ozone animation will not open at and so I have linked to my informal CSIM site where I have captured the asset.

Acknowledgments:  Many thanks to Bob Endlich, Bernie McCune, and David Tofsted as well as the other fine members of the Las Cruces Atmospheric Forum.  Their patient mentoring and many additional climate observations helped to make these geostrophic maps become visible, even when we can often disagree.

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