[pct-l] Umbrellas and desert hear

[Greg Kesselring]

It's a huge difference.  When your hat is exposed to direct sunlight, it 
gets HOT.  A hat also doesn't allow air circulation around your head.

Your head will feel a lot cooler without at hat if you're standing in 
the shade than with a hat standing in direct sunlight.  Ditto for any 
other part of your body that is in direct sunlight and is covered with 
clothing.



Patrick Beggan wrote:
> Right but how is that different from a wide-brimmed hat? As long as 
> your skin is covered, there's no major difference.
>
> And trust me, I know all about the desert. :P I'm just wondering why a 
> hat is inferior enough to warrant the extra weight of an umbrella to 
> people who slice up their maps into funny shapes to save a quarter 
> ounce. :P
>
>
> On Jan 22, 2008, at 2:35 PM, Greg Kesselring wrote:
>
>> I'm sure there is a lot of heat given off by the desert ground.
>> However, the radiant heat from direct sunlight adds to that. Having
>> spent lots of time in the open alpine of the North Cascades, my guess is
>> that hiking under direct sunlight adds 20 or 30 degrees to the ambient
>> temp just in terms of how it feels.
>>
>> If you're in the hot desert, try standing out in the sunlight.  Then try
>> standing in the shade.  Which do you think will feel warmer.
>>
>> The umbrella fellas are just trying to take that shade with them, all
>> day long.
>>
>>
>>