John VanSickle nous illumina en ce 2008-09-13 23:30 -->
> Jim Holsenback wrote:
>> Howdy,
>>
>> Yikes ..... summer just didn't seem long enough. Last evening temp got 
>> down to 3.8C and the Canada geese are on the move. We've had a REALLY 
>> damp summer so maybe the fall colors will give us some extra eye candy.
> 
> You get extra fall colors from lots of sugar (glucose, really) in the 
> leaves just as they die for the winter.  You get lots of glucose in the 
> leaves from lots of sunlight.
> 
> If it's not sunny when the leaves start their annual change, they won't 
> be too colorful.
> 
> Regards,
> John
The fall leaves colour also depend on the mineral salts present in them.

-- 
Alain
-------------------------------------------------
Zen Buddhism: Shit is, and is not.

Post a reply to this message

Jim Holsenback wrote:
> Howdy,
> 
> Yikes ..... summer just didn't seem long enough. Last evening temp got down 
> to 3.8C and the Canada geese are on the move. We've had a REALLY damp summer 
> so maybe the fall colors will give us some extra eye candy.
> 
> Jim 
> 

We are in the funny temperature range as well...

for the past week we've had good weather

~80F

Then yesterday  92F & very very humid - likely the worst all summer - I 
felt like I was swimming.

Maybe it was the last stab of summer.



Tom

Post a reply to this message

Jim Holsenback wrote:
> 
> just about everyone i've talked to has been experiencing weather extremes 
> ..... went from shorts and sandals to jeans and a hoody literally overnight. 
> It was like flipping a light switch
> 


It looks like we actually will have a fall here - it's predicted to be 
mid 70'sF here for the next week.

In some years it has been just as you described.

I remember one year where it was ~85F and high humidity and then 
magically one day ~55F and very cold for the rest of the year.  I 
remember observing we skipped the 70F and 60F ranges entirely.



Tom

Post a reply to this message