When buying an in-ground safety cover, you may be asked what your preferred weight is. The types of covers referred to are LightWeight, HyperLight or HeavyWeight covers. A lightning strike is a lightning strike in which an electrical discharge takes place between the atmosphere and the ground. Most of them originate in a cloud of accumulonimbus clouds and end up on the ground, which is called cloud-to-ground lightning (CG).
A less common type of impact, the ground-to-cloud (GC) ray, consists of a beam that propagates upwards and that starts from a tall object placed on the ground and reaches the clouds. Approximately 25% of the lightning that occurs worldwide occurs between the atmosphere and terrestrial objects. Most of them are intracloud (IC) and cloud-to-cloud (CC) lightning, where discharges only occur high in the atmosphere. Lightning strikes an average commercial aircraft at least once a year, but modern engineering and design make this rarely a problem.
The movement of aircraft through the clouds can even cause lightning to fall.
Solid pool covers
don't last as long as stronger mesh ones, since they're heavier and harder to store, and they usually last a little more than 10 years at best. According to the United States Department of Energy (DOE), using a pool cover is also the most effective way to reduce pool heating costs. However, to ensure that the drain or pump continues to work properly, solid pool covers require more maintenance during the winter.While the weather helps determine the best way to cover pools during the winter, both overhead and in-ground pools should be covered, especially in areas where snowfall is often abundant in winter. They roll and unroll the cap around a cylinder much like how a standard fishing reel works. The DOE cites that transparent bubble covers reduce solar energy absorption by 5 to 15%, while covers with opaque bubbles reduce this absorption by 20 to 40%. If you live in a warm climate and have a round, above ground pool, this thinner 8mm solar cover is enough to increase the temperature of the pool water.
For pools that use solar covers or other malleable covers, a system of reels to roll and unroll a cover can be useful, especially for those with larger pools. In colder climates, using pool covers in winter helps prevent ice and snow from altering pool chemistry, while preventing contaminants from entering the water. For example, if you live in a windy climate, you should opt for a thicker and more durable cover, 16 mm and made of vinyl, which is more rigid; in a warm, sunny climate, an 8 mm polyethylene cover may be sufficient. That's why the best winter covers for in-ground and elevated pools should be made of more durable materials if they need to withstand the harshest winter environments.
Dark blue, black and opaque solar pool covers control chemical consumption and are better at retaining heat, so they're a good option if your goal is to keep your pool warm during the night. Thicker pool covers (14 to 16 miles) offer better insulation in colder, windier climates, Dobrica says. This rectangular sun cover is extra thick and comes in silver, which means it's great for absorbing and retaining heat and protecting against any chemical imbalances.
