On 8/13/2014 10:45 PM, sf wrote:
> On Wed, 13 Aug 2014 22:26:34 -0600, Mayo > wrote:
>
>> On 8/13/2014 5:58 PM, sf wrote:
>>> On Wed, 13 Aug 2014 16:30:49 -0600, Mayo > wrote:
>>>
>>>> On 8/13/2014 4:11 PM, sf wrote:
>>>>>
>>>>> There is a new place near us that has a cute bee hive shaped brick
>>>>> oven, but it's fired by gas not wood. The only wood or mesquite coal
>>>>> fires we have in city restaurants these days have been grandfathered
>>>>> in. http://imgur.com/43X7uIY
>>>>>
>>>>>
>>>> How is that possible in a city where you have so much fresh sea air?
>>>>
>>>> Do you even get bad air quality days there?
>>>
>>> We have loads of fresh sea air and it blows our yucky air inland. We
>>> participate in Spare the Air days because although our air quality may
>>> not affect us directly, it does affect other parts of the Bay Area.
>>> Our attitude is that we're all in it together and we try to do our
>>> part to help them have fewer bad air days.
>>
>> Very cool, so there is an inversion of sorts I presume, makes sense.
>
> Yes. Topography has a lot to do with microclimate temperatures. The
> warmer it is inland, the colder it is here. Just think about mountain
> ranges and why it's wet on one side and dry (often desert-like) on the
> other. That's what we have here but it's fog and not rain. The
> hotter it is inland the colder it is here. The cold comes in over the
> ocean and the heat comes from the Valley and the collide over a
> mountain range.
>
> For the most part, fog is kept West of Twin Peaks - but during a
> severe El Niño August (extra cold ocean air), it can creep as far
> inland as the Altamont Pass and you know you're going to be hit by a
> blast of 100°+ hot air when you get to Pleasanton/Livermore area on
> those days.
>
>
That's a superb description, I took out my road map to see where the
features are.

It's like you have competing walls of temperature regime with little mixing.

I'm thinking of it a bit like a horizontal discontinuity/inversion.