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Hailstorms Cause Worse Damage Every Year: Experts

A May 2017 hailstorm in the Denver area caused $2.3 billion in insurance losses. Last week, hail injured 14 people in Colorado Springs and killed at least five animals at the city zoo.

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A girl with a scooter drives through a hailstorm in Munich, Germany
A girl with a scooter drives through a hailstorm in Munich, Germany

Hailstorms inflict billions of dollars’ worth of damage yearly in North America alone, and the cost will rise as the growing population builds more homes, offices and factories, climate and weather experts said Tuesday.

The role of climate change in hailstorms is harder to assess, the experts said at a conference at the National Center for Atmospheric Research in Boulder, Colorado.

Climate change will most likely make large hailstorms worse, but population growth is more of a certainty, said Andreas Prein, a climate modeling scientist at the atmospheric research center.

“We know pretty certain that we will have more people in the future, and they will have more stuff, and this stuff can be damaged,” Prein said. “I think this component is more certain than what we can say about climate change at the moment.”

This year is expected to be the 11th in a row in which the damage from severe storms exceeds $10 billion in the United States, and 70 percent of that cost comes from hail, said Ian Giammanco, a research meteorologist for the Insurance Institute for Business and Home Safety.

“It’s such a huge driver of the dollar loss each year,” he said.

population growth , climate , hailstorms
Population growth is more of a certainty,than Climate. Wikimedia Commons

Bigger homes, closer together

Costs are rising in the U.S. because homes are getting bigger, from about 1,700 square feet (139 square meters) in the early 1980s to 2,500 square feet (232 square meters) in 2015, he said. New subdivisions also pack homes in more tightly, Giammanco said.

“So it’s a bigger target for hailstorms to hit,” he said.

The effects of climate change on hail and the resulting damage are harder to calculate because hailstorms require distinct ingredients, and global warming affects them in different ways, Prein said.

To form, hailstorms require moisture, an updraft, variable winds and freezing temperatures at lower levels of the storm cloud, he said.

Updrafts lift water droplets into the clouds, where they attract other droplets and freeze together, scientists say. Winds of varying speed and direction keep the droplets suspended in the cloud long enough to grow into hailstones. When they eventually fall, freezing temperatures in the cloud keep them from melting before they hit warmer air closer to the ground.

Climate change will most likely increase updrafts, helping hailstones form, Prein said.

But it will inhibit two hail-producing conditions, he said. Warmer temperatures will expand higher into the atmosphere, so falling hailstones have more time to melt before hitting the ground. And differences in wind speed and direction will subside, he said.

Climate change will make the atmosphere more moist, but the effect that will have on hailstones isn’t clear, he said.

the number of weaker storms but increase the number of severe ones.
The number of weaker storms decrease but increase the number of severe ones. Flickr

More storms that are severe

Kristen Rasmussen, an assistant professor at Colorado State University, said the combined effects of climate change will probably inhibit the number of weaker storms but increase the number of severe ones.

“So we actually think that’s why we’re seeing a decrease in the number of weak to moderate storms and an increase in the most severe storms,” she said. “If those storms are able to break through this inhibition, they … have the potential to be more severe, and they can tap into more energy when they do so.”

The researchers said they need more data to understand the relationship between climate change and hailstorms. Improved science could also help predict hailstorms and calculate risks better, they said.

The Rocky Mountains of Colorado, the Andes in South America and the Himalayas all have conditions that make them hot spots for hail, Rasmussen said.

Also Read: Climate Change Changes The Cost of Eating Veggies

A May 2017 hailstorm in the Denver area caused $2.3 billion in insurance losses. Last week, hail injured 14 people in Colorado Springs and killed at least five animals at the city zoo. Damage estimates were still being compiled.(VOA)

Next Story

The Flamboyant Plastic Waste Boat Reminds The Global Policy-Makers The Urgency To Address Impact Of Plastics on The World’s Marine Environment

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plastic waste
The plastic waste was melted, shaped and carved by the team of traditional dhow builders exactly as they would do with wood. Pixabay

This flamboyant nine-metre-long dhow, made from 10 tonnes of plastic waste collected from Kenyan beaches and roadsides, sailed more than 500 km from the idyllic island of Lamu to Zanzibar this year with a message to eliminate single-use plastics.

And it also reminds the global policy-makers the urgency to address and lessen the growing impact of plastics on the world’s marine environment.

The Flipflopi dhow was positioned right at the entrance of the conference venue in the UN Environment headquarters in Nairobi where over 4,700 delegates from 170 countries gathered for the week-long UN Environment Assembly, the world’s highest-level decision-making body on the environment.

“Marine plastic litter pollution is already affecting more than 800 marine species through ingestion, entanglement and habitat change,” UN Environment’s coral reef unit head Jerker Tamelander said.

“Waste continues to leak from land and coral reefs are at the receiving end. They also trap a lot of fishing gear as well as plastic lost from aquaculture. With the impacts of climate change on coral reef ecosystems already significant, the additional threat of plastics must be taken seriously.”

pollution
“Marine plastic litter pollution is already affecting more than 800 marine species through ingestion, entanglement and habitat change,” UN Environment’s coral reef unit head Jerker Tamelander said.
Pixabay

The majority of marine litter – between 60-80 per cent – is composed of plastic.

Only nine per cent of the nine billion tonnes of plastic the world has so far produced has been recycled.

The overwhelming majority of plastics – comprising drinking bottles, bottle caps, food wrappers, grocery bags, lids and straws – are designed to be thrown away after a single use, ultimately ending up in landfills and polluting the environment.

“The first leg of the journey is over, but the journey continues,” Kenyan entrepreneur and Flipflopi project leader Dipesh Pabari told reporters here.

“When you are on the boat and you come to know that it’s made from your toothbrushes and Pet bottles. You will ask how and that is the real story,” he said.

Coming from a family of carpenters and dhow builders in Lamu, an island off the North Coast of Kenya, Ali Skanda is intimately familiar with what goes into building a dhow – a sailboat that has been used in East Africa for more than a thousand years.

On its maiden 500-km-long sojourn, supported by the UN Environment’s Clean Seas campaign, the Flipflopi stopped at towns and cities to sensitize the communities on ways to cut down use of single-use plastics.

A report, Plastics and Shallow Water Coral Reefs, released at this UN Environment Assembly, which focus on innovative solutions for environmental challenges, identifies a number of knowledge gaps that must be addressed to strengthen the scientific evidence base for action on marine plastics that impact coral reefs.

Inspired by 15-year-old Swedish climate activist Greta Thunberg, activist Rebecca Freitag, 26, a UN delegate for sustainable development from Germany, told IANS that the youth should be given participation in environment talks as they comprised 25 per cent of the global population.

Before coming to the UN summit, she collected the plastic waste from roadsides of Kenya, which introduced the world’s toughest laws on single-use plastic bags two years ago, and got her dress stitched to spotlight solutions for the growing impact of plastics on the world’s marine environment.

plastic
“Waste continues to leak from land and coral reefs are at the receiving end. They also trap a lot of fishing gear as well as plastic lost from aquaculture. With the impacts of climate change on coral reef ecosystems already significant, the additional threat of plastics must be taken seriously.” Pixabay

The Flipflopi is now ready for a voyage next month for a greater political and social awareness of the issue of plastic pollution.

“Now we want to build a 20-m long boat that is capable of sailing to South Africa and beyond,” Pabari said.

For this, $1.5 million is required.

The Flipflopi team has had to pioneer new techniques to craft the dhow’s various components.

Also Read: Biotechnology Can Meet The Growing Energy Needs Of Rural India

The plastic waste was melted, shaped and carved by the team of traditional dhow builders exactly as they would do with wood.

Every single element of the boat has been constructed by hand and the whole boat has been clad in colourful sheets of recycled flipflops.

These flipflops have been collected on beach cleanups on Lamu’s beaches, where they are among the most prolific items found. (IANS)