Posts in category: The Earth

Experts explained that climate change played a significant role in the rapid intensification of extreme weather events. Hurricanes, wildfires and prolonged drought can significantly impact human lives and environments.

Rapid intensification of hurricanes due to climate change

(Photo : by Mario Tama/Getty Images)
Recent Tropical Storm Hilary in Southern California. Hurricane Idalia hit parts of Florida’s Gulf Coast, Eastern Carolinas and the Big Bend Region in August and early September. Meanwhile, tropical storm Hilary unloaded heavy rain conditions in Southern California

As September begins, active hurricanes are most likely to emerge. Hurricanes and tropical storms can unleash severe weather conditions:

• Landslides
• Flooding
• Torrential Rain
• Mudslides
• Evacuations
• Flash flooding

Recently, Hurricane Idalia hit parts of Florida’s Gulf Coast, Eastern Carolinas and the Big Bend Region in August and early September. Meanwhile, tropical storm Hilary unloaded heavy rain conditions in Southern California.

According to an expert, Andrew Grigg, the Gulf of Mexico experienced a noticeable increase in hurricanes’ frequency and rapid intensification in recent years.

Grigg is a weather historian and an MA student in Environmental Science.

Grigg added that the trend of hurricanes can be attributed to the climate change effects. Grigg also began a blog called Climate Conduit that provides perspectives and articles about climate, environment and weather conditions.

“The key factors driving this phenomenon include warmer sea surface temperatures, which provide more energy for hurricanes to intensify and rising sea levels that exacerbate storm surge impacts,” according to Grigg.

The recent Communications Earth and Environment report showed climate change could fuel back-to-back or shift from flooding to drought conditions. The frequency of shift could make it more challenging for communities to prepare.

Grigg added that climate change could help shift atmospheric circulation patterns. It can allow hurricane development to intensify due to favorable conditions.

The ocean’s role in climate change

As global warming unleashes more heat, the ocean plays a crucial role in absorbing the heat and greenhouse gas emissions. It could likely influence the intensification of possible storms or hurricanes.

“Warmer ocean waters supply the fuel that hurricanes require to thrive,” according to Abner Miller, who is also an environmental scientist at starlinkhow.

Miller explained that warm waters and global temperature rise could likely accelerate hurricane formation. He mentioned that “every 1°C increase in sea surface temperatures, storm intensity increases by 5% to 10%.

Climate change has a crucial role in sudden or unprecedented excessive rainfall.

According to Miller, the warmer air has more moisture, which can unload stronger storms and rain. The result can cause dangerous flooding and damage to infrastructures.

People near the coast or flooded-prone areas can become at risk of hurricane impacts, especially in poorer countries.

As a result, weather forecasting and improved warning systems can help anticipate the impacts of intense weather events.

Also Read: Climate Change Threatens Sea Urchin Survival That Can Devastatingly Affect Coral Reef 

Climate change linked to wildfires

(Photo : by SAKIS MITROLIDIS/AFP via Getty Images)
Wildfire in Greece on September 3, 2023. Climate change is linked to the global impacts of drought, wildfires and powerful hurricanes. Extreme weather events can rapidly intensify, causing damage to wildlife and humans.

Climate change is also a key driver in prolonged drought and extreme wildfires. The human-caused activities has caused all-time greenhouse gas emissions.

Grigg explained that wildfire frequency in parts of Canada and the Western US is linked to climate change. The role of rising temperatures and prolonged droughts are conducive conditions to wildfires, including dry vegetation.

“Climate change can lead to altered precipitation patterns, reducing rainfall in certain regions and contributing to drier conditions that increase the risk of wildfires, ” Grigg said.

In a study in Environmental Research Letters, researchers warned of the unusual autumn wildfire in California that caused widespread power outages and safety concerns. The favorable conditions could unleash unprecedented fires.

On the other hand, Miller noted the the infernos in the making or the increasing wildfires in parts of the Western United States and Australia.

“Long periods of high temperatures and drought produce tinderbox landscapes. The changing climate exacerbates these conditions, increasing the likelihood of wildfires erupting and spreading quickly,” Miller added.

According to a report in Ecosphere, researchers warned that fire frequency could result in potential ecosystem collapse, affecting animals sensitive to heat.

In Australia, low-intensity fires harm the habitats of riparian birds, causing a significant impact on the rare and threatened population of Purple-Crowned fairy-wrens.

In the US and Canada, the greenhouse gas emissions contributed by 40% to deadly wildfires in US and Canada.

Also Read: Summer Reaches Hottest On Record; Warmer Temperatures Become Unusually Frequent, Reports Warn

Climate change can prolong drought conditions and heatwaves

Grigg explained that prolonged drought conditions and heatwaves are also linked to climate change, especially the extreme heat waves in the Pacific Northwest in 2022.

“In various parts of the world, climate change is associated with an increased likelihood and severity of droughts, ” Grigg said. He noted that higher temperatures can likely lead to reduced soil moisture and water scarcity, impacting water resources and ecosystems.

In addition, Miller explained that the rising temperatures would result in high temperatures that cause the water supply to dry up, leading to problems in food security.

In the US, the American Red Cross warned of the health impacts of extreme heatwaves, bringing more risks to people without cooling conditions and vulnerable sectors.

Intense heat can kill more people than other natural weather events.

In Europe, a recent study in Nature Medicine showed that 61, 672 deaths were linked to heat illnesses due to challenging heatwaves in 2022 based on the record between May 30 and September 4.

Meanwhile, soaring temperatures can harm coral reefs and aquatic animals, making survival challenging amidst the heat. The rising global temperatures impact human health and food security without mitigation efforts.

Extreme weather event significant damages

Extreme weather events can result in a devastating aftermath, especially to biodiversity and ecosystems.

In the US, NOAA records showed the country suffered from heavy losses due to billion-dollar weather disasters.

• Since 1980, the US has experienced about 363 weather disasters. The disaster cost reached $2.590 trillion.
• This year (2023), at least 15 weather disasters occurred in the country, of which 13 refer to severe storm events.
• Yearly, at least 3.3 million adults in the US are forced to relocate or displaced due to extreme weather and natural disasters.

Climate change is a societal and environmental problem, together with global warming. The increasing burning of fossil fuels, the greenhouse effect, and deforestation can worsen the impacts of climate change.  

Preparing for extreme weather events 

As extreme weather events become more frequent, preparations and disaster management are essential to prevent devastating impacts. Widespread loss of infrastructures and lives could happen without efficient weather forecasting.

Countries are advised to invest in disaster-resilient plans and improved weather-predicting tools to mitigate the possible effects of human-induced hurricanes or heat waves.

Better forecasting can efficiently warn and suggest to communities to anticipate the shift from drought to extreme rainfall.  

Moreover, coordination with local, regional and national forecasting agencies is essential to inform communities about possible weather events.

Homeowners can also prepare by turning on their mobile disaster alerts or checking the weather outlook. Keeping home emergency kits is also vital during evacuations.

Related Article: Fire Frequency Can Cause Ecosystem Collapse, Research Shows

For more similar stories, don’t forget to follow Nature World News.

(Photo : Michaela Filipcikova / Unsplash)
The feral cat problem in Australia is restricting pet owners to a curfew.

Officials in Australia are tackling the feral cat problem with new regulations, which may require pet owners to adhere to a rigorous curfew for their feline pets.

Pet Owners vs. Feral Cat Problem

According to new regulations that the federal government is considering, cat owners may not be allowed to let their pets outside.

This Monday, Tanya Plibersek, the environment minister, presented new regulations to safeguard native wildlife, which are gravely threatened by both domestic and wild cats.

On Thursday, the government made its suggested strategy to deal with the cat issue available for public comment. It involves granting authority to councils across Australia to forbid cats from going outside altogether or to put nighttime curfews on them.

New Restrictions and Fines

If people break the regulations or reside close to conservation areas, local governments may even completely ban cat ownership in addition to enforcing the rules with steep fines.

One of the main causes of the extinction of 20 of the 29 native mammal species in Australia since settlement, according to Professor Sarah Legge, who participated in the plan, cats are one of the biggest risks to the country’s native biodiversity.

Although local governments all around the country currently have their pet ownership regulations, the national government’s proposed proposal would aim to standardize them rather than create a “patchwork” of different rules.

In the study, the Australian government will also discuss approaches to managing the threat posed by feral cats.

Naturally, feral cats pose the biggest hazard, but domestic cats must also be carefully controlled, according to Plibersek.

Pets, Ferals, Invasives, and Natives

The Invasive Species Council estimates that Australia has 5 million domestic cats, which kill 500 million indigenous creatures annually.

Feral cats typically kill 1.5 billion native mammals, birds, and reptiles annually, while their numbers can vary from 1.4 million to 5.6 million depending on rainfall.

According to the Australian government, feral cats are a significant factor in the demise of numerous land-based endangered species, including the bilby, bandicoot, bettong, and numbat.

To create the regulations and local councils responsible for their enforcement, the federal government would need to collaborate with the State and Territory governments.

Plibersek emphasized that this consultation document would address very significant issues including whether or not there should be a curfew for cats and whether or not local governments should have the authority to impose cat ownership restrictions in their communities.

The need for improved management was also mentioned by Plibersek, who added that most responsible cat owners who genuinely love their pets already practice many of these measures, such as keeping their pets indoors, especially over the course of the night.

Also Read: Utah Coyotes Kill 4 Pet Cats in Sandy Neighborhood 

Policy Draft

The document is aiming for an increase of 30% in suburbs where the number of cats is controlled, either by prohibiting cat ownership or by forbidding them from going outside.

The government’s paper is up for public comment until December 11th. To guarantee the long-term survival of indigenous species and ecological communities, the plans outline research, management, and other activities stakeholders across Australia can take.

Related Article: Australia Takes Out Feral Cats via Solar-Powered Lasers Rigged with Toxic Gel 

A new study shows that shark tourism, in which people pay to swim with and interact with sharks, may be hampering the species’ capacity to hunt and reproduce.

In a paper published in Scientific Reports, researchers noted that whale sharks (Rhincodon typus) exhibit aberrant behavior patterns in the presence of human tourists, such as quick and zigzag motions consistent with fleeing predators.

They added that ecotourism increases the likelihood of sharks being in a disturbed behavioral state, which likely increases energetic expenditure and may have downstream ecological consequences.

Read Also: Great White Shark Tourism in Guadalupe Island Banned by Mexico

Disturbed behavior patterns

The researchers examined 39 overhead recordings of whale sharks in Bay of La Paz, Mexico.

Their goal was to see if shark behavior changed in the presence of a swimmer emulating tourist behavior versus sharks swimming in isolation.

When the swimmer was present, the researchers found an increase in disturbed behavior patterns, resulting in the sharks consuming more energy than when swimming alone.

The researchers believe this behavior will make it more difficult for whale sharks to scavenge for food and may potentially harm reproductive success.

“At this stage it is difficult to say exactly how concerning the findings are. The shifts in behavior observed in the presence of humans mean that these sharks are going to be using more energy, and spend less time performing natural foraging behaviors,” study author Joel Gayford of Imperial College London, in the U.K, said in an interview.

Shark tourism poorly understood

While earlier research into the effects of tourism on the species has been conducted, the study concluded that the ecological consequences are not entirely known.

Prior research has discovered that in regions where there is a lot of shark ecotourism, there is sometimes a drop in the number of species found. According to the authors, more research is needed based on these new findings.

The researchers proposed first assessing the shark’s behavioral patterns before allowing swimmers into the water with the creatures.

The study also suggests that regulated distances between tourists and sharks be investigated in order to give animals enough room.

The researchers clarified that they are not saying that ecotourism is harmful to sharks or that it should be prohibited.

They also recognized that ecotourism is vital to shark conservation and will continue to be so in the future.

This also drives the economy as the global shark diving industry is estimated to produce more than $300 million USD per year.

“We are suggesting that the rules and regulations surrounding shark ecotourism should be reviewed regularly, taking into account scientific studies such as this one. Many more studies are required before we will fully understand the ecological implications of shark ecotourism,” Gayford said.

Whale sharks are considered one of the most amazing creatures in the ocean.

They are members of the carpet shark family, and despite their enormous size, they are reputed to be peaceful and pose no harm to humans.

The IUCN has classed the whale shark as endangered. Human-caused hazards to whale sharks include accidental capture in fishing gear, boat strikes, and targeted killing for their fins, skin, and flesh.

Related Article: Whale Shark Sight: How Rhodopsin Evolved for Them To See Through the Years?

Related Video: