Dr. D'Adamo states that the GT-6/Nomad is particularly "sensitive" to changes in barometric pressure. I confess I haven't understood what he means. But when I consider my tremendous zest for wind and fog, and penchant for weather others consider lugubrious (cf. my 7/20/06 blog: "Lugubreity"), I think I get it. "Sensitive" in a positive way! Boredom with long stretches of unchanging blue California skies. Give me a thunderstorm, by gum!

Here in the San Francisco Bay Area, the temperature is almost always between 50 and 70 degrees Fahrenheit. We have no snow, almost no thundershowers, very low humidity -- in short, few of what most consider "extremes". But within the spectrum we do experience, there are marvellous phenomena.

The first and my favorite is Fog. Great billowing clouds of it blasting eastward from the Pacific. To suffer a July or August 3-day heatwave (read: Temperature over 75F) is to look westward, scanning the low skies, the Bay surface, for a hint of that blessed sheet of downy whiteness sure to blanket the city with its chill. Talk about a pressure change!

The second is: Post-Rain: The dark slate-skyed backdrop to an afternoon sun-bathed ivory cityscape, when all is clear, sharp, and brisk: Perfect for rainbow watching: The Major Kind that arches over the entire city, sometimes double- or even triple- or (I kid you not) quadruple-arched. Another pressure change.

Sometimes we get hail, and sometimes a quake, but within our narrow temperature parameters, it's generally fog and rain that punctuate barometric shifts. Hence we learn to "be sensitive to" those shifts, and by "we", maybe I mean we Nomads! Most people aren't as soul-bound to the phenomena as I am, but I have met quite a few who fell under the spell of them while visiting and decided to relocate here.

The indigenous bloodtype maps show something I've often wondered about: The strange surge in the incidence of B bloodtype in Scotland, as opposed to England, Ireland and Scandinavia. Scots will confirm the greyness and drear of their homeland's climate, but also the thrill of the pounding surf on rocky crags, and the bracing gusty gales across the heath, and you wonder: Why the Nomad taste for such barometric drama? And why the little B outpost in Scotland?

And here's another conundrum for you: Dr. D'Adamo says that multiple sclerosis is more prevalent among those of bloodtype B. Anyone studying that disease locationally has been puzzled about the veritable MS hotbed in the Faeroe Islands (62N, 6-8E) way north of Scotland, north even of the Shetlands.

It may now be apposite for me to have a look at the barometric/weather patterns of the Eurasian steppe, Caucasus and Carpathians, whence My People migrated to America, and where B is customarily found.

B in Scotland?
MS in the Faeroes?
This B and the moody heath?
Melancholy weather, shrouded in mystery: And you thought this was just a diet.