Thursday, August 25, 2005
Geog 316 journal - The Fog and The Drought
So there was some talk in the first meeting about fog and fog dynamics and I couldn't help but start to think about what a cool summer it's been on the coast. I regularly check the NRL satellite for fog at the coast and this summer seems the coast seems to have had more foggy days that "normal" (n=15yrs of amatuer observations). Now this is just a feeling, no hard data, but it got me wondering why. Given that bay area fog is generally driven by central valley warming and thus the creation of localized low pressure - (warm air rising in the valley creates a vacuum and thus the marine layer is sucked eastward) - I couldn't help but wonder if the midwestern drought has anything to do with our more than "normal" foggy days at the coast - particularly since they've lasted well into August which is generally clear. My simple thinking is this, the mid and pacific northwest are likely to be warmer than average thus creating this vacuum effect but at a little larger scale than just the bay area / central valley dynamic. Strictly anecdotal science at this point but maybe an idea worth pursuing.
Posted by Matt Merrifield at 11:09 AM