Disclosure: Ad. The wrap, top and capris are samples from Coolibar. They did not endorse this post. I wrote it entirely myself and it represents my 100% honest opinion.
- Once upon a time in the Provence
- Shade is no sun protection
- Shade provides thermal comfort
- Why can you get sunburned in the shade?
- Harmful UV rays don’t take a winter break
- Top of the World Style linkup party No. 222
Once upon a time in the Provence
In the 80s, my friends and I spent our spring semester break in the Provence for flying sailing planes. There the Sun was already strong enough to heat the ground providing excellent updrafts that we used to spiral up high. But actually we were there hoping for a low in the Gulf of Genoa. This weather situation would pull air down the Rhone valley causing excellent lee waves. The challenge was to get thru the then very turbulent – read bumpy – first 0.6 to 1.2 miles (1-2 km) of the lower atmosphere and then find the upward part of the wave. That could lift you over 3.1 miles (5 km) high.
Shade is no sun protection
On the first day upon arrival, the non-pilot gals spent their days browsing and/or “window shopping” the little streets of the surrounding cities. When you never have been in southern France, in the downtown areas the streets are very small to provide shade all the time. When they came back, they all had a terrible sunburn most of them even under the light-weight tops with airy weave, while we pilots had none. They were pretty upset. “We were in the shade all time even when we had ice cream on the deck of a cafe.” one of them said.
Shade provides thermal comfort
“Shade doesn’t protect you from the Sun, it’s just mitigates the heat stress.” I responded. “Yes, the temperature was very comfortable.” she admitted. “We wondered how you guys would do in the heat in your little planes with your leather bomber jackets, gloves and hats.” “Temperature decreases with height” I replied. Then one of the ladies realized that none of the pilots had a sunburn. “You just didn’t get a sunburn because the rays don’t go thru the glass.” “No, they pass glass. You can get a terrible burn in your car and especially in a sailing plane when you up high. We all wore sun cream with SPF 50 on our face and neck. And we were bundled up in several layers of clothes.”
Why can you get sunburned in the shade?
The Sun’s rays get reflected on the walls of buildings, by leaves, the ground, etc. They can even bounce back and forth between these surfaces. Thus, while an umbrella protects you from the direct Sun light, it can’t protect you from rays that have been reflect. When you are in a small street the houses along the street provide shadow. However, the rays reach walls or roofs at higher levels on one side of the street. These rays are partially bounce back (some of the rays heat the surface the fell on) hitting the wall on the other side of the street at a lower height. They again reflect back and so on. This means that when you walk in the small street you are exposed to very diffuse sunlight. Unfortunately, this diffuse radiation also encompasses harmful UV rays. These rays are the ones that cause sunburn.
Harmful UV rays don’t take a winter break
Sun burns can happen at all times of the year especially when you are in an environment with high reflective surfaces like snow, water, mirrors, white walls or the glass windows of a street mall. Therefore, in the name of your skin health you should use skin care products with sun screen all the time. When you spend a lot of time outside even in the shadow protect your skin with UPF rated clothing like the ones in my OOTD. Today sun-protective clothing comes in very chic cuts that don’t read sparse time, great outdoors or vacation. Check the post at the link for a glam and an office appropriate example.
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Mölders, N. (2019) Outdoor Universal Thermal Comfort Index Climatology for Alaska. Atmospheric and Climate Sciences, 9, 558-582. doi: 10.4236/acs.2019.94036.
Top of the World Style Linkup party No. 222
Welcome to the 222nd Top of the World Style linkup party! Tanks for coming. Let’s first see who are the awardees from last week.
Congrats Ladies! Grab your buttons for your awards page or sidebar.See these awesome outfit ideas at the Top of the World Style #linkup party. #OOTD Click To Tweet I just joined the Top of the World Style #linkup party. #timelessstyle Click To Tweet
Photos of me: G. Kramm
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