"We found that Wellington playgrounds have insufficient shade available. Increased shade is urgently needed to protect children from harmful ultraviolet radiation [UVR] exposure, by planting trees with heavy foliage and building structures with large, protective roofing."
The researchers used a Solarmeter to calculate the amount of UVR blocked by each built structure and tree.
"Our study shows that many children in playgrounds are in full exposure to the sun. This puts them at risk of sunburn and skin cancer if they are not wearing sunscreen and or protective clothing.
"Providing effective shade in summer recreation spaces may help to reduce children's risk of skin cancer," said Gage.
New Zealanders are at the highest risk of melanoma skin cancer in the world. Each year, nearly 70,000 skin cancers are diagnosed and 500 Kiwis die from skin cancer.
The researchers stress the importance for people to follow the SunSmart advice: "slip on a shirt with long sleeves, slop on some sunscreen - about 1 teaspoon to each arm and leg - slap on a wide-brim hat and wrap on close-fitting sunglasses," when outdoors this summer, and to seek shade when it is available.
"Approximately 90 per cent of skin cancers are linked with excessive sun exposure. Forming lifelong sun protection habits is crucial for preventing skin cancer," Gage said.
The research was published in the journal Photochemistry and Photobiology.