TomBear said:
Barca, I think you got mixed up.......artificial surfaces reflect, not absorb, the heat. That's one of the reasons they're so miserable. I THINK you meant to say that but just got mixed up while you were typing?
Your last paragraph does provoke some thought though. Many of the SEC schools have ripped up their artificial surfaces and installed the new generation of natural grass surfaces. Among those schools are South Carolina, Alabama, Ole Miss, Tennessee, Texas (soon to be SEC), Oklahoma (soon to be SEC), Arkansas and Texas A&M. Interestingly Mizzou and Kentucky switched from grass to artificial, but I talked to someone the other day who says he thinks Kentucky may be having second thoughts. LSU and Georgia never switched away from natural grass.
sorry, but artificial surfaces absorb heat. synthetic materials retain heat. if its 100+ degrees outside I would choose to lay down on grass over plastic fibres any day. Grass releases water vapor in heat, and as we know, evaporation helps cooling as long as the ambient humidity level is not high. There is the potential danger with high humidity and extreme heat (what is referred to as wet bulb temperatures). But absent triple digit heat and high humidity, natural grass will cool itself naturally.
If you don't believe me, don't take my word for it, check out
Penn State Center for Sports Surface Research(on a complete nerd thing, how cool is it that Penn State has this research center!)
From research of there's I read a few years back, iirc, the hottest they ever recorded was like 20 years ago in Utah where a field got to 200 degrees.
Traditional, non filled astroturf back in the 1970's would create surface temperatures on average 50 degrees hotter than grass/dirt.
The synthetic material can't transfer the heat to the soil beneath to help disperse the heat. They also don't absorb water. It just traps the heat. That means that they begin to release intense amounts of heat while the ambient air is also getting hotter. That is why astroturf fields get blazing hot between ground level and knee height. Now, as far as I know, rubber infill is no longer an option.
The response to the heat dangers of sythnetic materials has been for companies to use infills that are usually made of highly absorbent natural fibres like hemp or something, so when they spray water on the field the fibres absorb a lot of water allowing for evaporation which aids in cooling, and helps reduce the heat, but they still don't compare to the ability of grass and dirt in reducing heat. a synthetic blade of grass retains more heat than a natural blade of grass