Published: Sat, June 09, 2018
Sci-tech | By Jackie Newman

Season's 1st tropical storm forms in eastern Pacific

Season's 1st tropical storm forms in eastern Pacific

The study was published Wednesday in the peer-reviewed British journal Nature.

The unusually slow-moving Hurricane Harvey was a recent example.

Kossin said the findings were of great importance to society. Yet tropical cyclones, which include hurricanes, have grown more sluggish since the mid-20th century, researchers say. But one scientist with the U.S. National Oceanic and Atmospheric Administration chose to look back in time, to see what happened in the past.

Kossin's research discovered the slowdown in both the Northern and Southern hemispheres and in every ocean basin except the North Indian Ocean. It's 20 percent when storms reached land.

Is Hurricane Harvey a preview?

Hurricanes are slowing down worldwide, a new study reports.

In addition to slower atmospheric circulations possibly causing the storms to move slower, the amount of rainfall that the storms are able to dump is increasing as global temperatures climb.

Roland Garros: Simona Halep overcomes Angelique Kerber
Muguruza isn't giving he opponent many chances to breathe, and that's the reason for her quick success in these recent matches. On Court Suzanne Lenglen, Marin Cilic and Juan Martin del Potro were locked in a first-set tiebreak when play was called off.

That means a storm that may already hold more moisture will have time to drop more of it in each spot.

If Harvey is any indication of what hurricanes will look like in the future, this will create a considerable strain on countries' ability to respond financially to storms.

Why are storms slowing down?

Global weather research has revealed Australia has some of the slackest tropical cyclones. "And that has effects on circulation - typically slows it down". But he says there's good evidence that the warming planet could weaken the global winds that push storms around.

Therefore, it would make sense that if the flow around the hurricanes and typhoons is moving slowly, the storms will also be moving slower, which Kossin believes is what he is observing in the data.

To understand the relationship between climate change and hurricane speeds, Kossin analyzed the paths of 7,585 tropical cyclones from 1949 to 2016. However, scientists have struggled to isolate the impacts of climate change on the characteristics of extreme weather events. Wind speeds within the storm remain high, but the whole system itself moves slower across the landscape, allowing punishing rains to linger longer over communities. So it isn't clear just how much of the change that Kossin found is actually attributable to human-induced climate change. "We'll need more formal attribution studies to disentangle these factors".

Like this: