Subscribe to our free daily newsletters
. Earth Science News .




Subscribe to our free daily newsletters



SHAKE AND BLOW
Study targets warm water rings that fuel hurricane intensification
by Staff Writers
Miami FL (SPX) Feb 28, 2017


Ocean survey flight path and instrument deployment points over shaded ocean heat content (OHC) that was calculated from survey data. High areas of OHC indicate warm, deep water. Vectors indicate observed surface currents. Black line indicates flight path. Black circles indicate Airborne eXpendable BathyThermographs (AXBT). Names of specific instruments are indicated as follows: CP for Airborne eXpendable Current Profilers (AXCP), CTD for Aircraft eXpendable Current-Temperature-Depth (AXCTD) profilers, and D for dropwindsondes (lower atmospheric profilers). Two names and symbols indicate two instruments were dropped at that same location. Image courtesy Rudzin, Jaimes, et.al.

Last year's devastating category-5 hurricane - Matthew - may be one of many past examples of a tropical storm fueled by massive rings of warm water that exist in the upper reaches of the Caribbean Sea.

In a study conducted in the region two years prior to when Matthew's trekked across the Caribbean Sea, the research team in the Upper Ocean Dynamics Laboratory at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science deployed 55 aircraft ocean instruments from the National Oceanographic Atmospheric Administration's WP-3D aircraft. The purpose of the scientific mission was to measure ocean temperature, salinity, and currents to understand the structure of these warm-water eddies.

The science team obtained vital information about the physical characteristics within one large warm-water eddy, which likely originated from the North Brazil Current, and analyzed its potential influence on sub-surface ocean conditions during the passage of tropical cyclones.

When analyzing the data, they found a barrier layer, an upper ocean feature created by the Amazon-Orinoco freshwater river outflow, that makes mixing in the upper ocean waters less efficient during wind events. This feature, and the fact that warm ocean eddies are known to assist in the intensification of hurricanes due to deep warm thermal layers, lead the researchers to theorize that the barrier layer within a warm ocean eddy may result in an even more favorable upper ocean environment for hurricane intensification.

"Our study is important because tropical cyclone intensity forecasts for several past hurricanes over the Caribbean Sea have under-predicted rapid intensification events over warm oceanic features," said Johna Rudzin, a PhD student at the UM Rosenstiel School and lead author of the study.

Tropical storms receive energy from their surrounding ocean waters. As a storm moves across the water, it may interact with rings of warm water known as eddies. As the storm moves forward over these eddies, the warm ocean waters below help fuel the storm's intensity through enhanced and sustained heat and moisture fluxes.

Similar warm ocean eddies exist in the Gulf of Mexico, a result of their separation from the warm-water Loop Current, are also of interest to the research team involved in this study.

Last year, Hurricane Matthew rapidly intensified from a tropical storm to hurricane status as it moved over the Caribbean Sea in the location where a warm ocean eddy exists, and in close proximity to where these measurements were taken for this study two years prior. Matthew continued to intensify to a category-5 storm and into one of the strongest in Atlantic basin history, which made landfall and devastated portions of Haiti, Cuba, and the eastern United States.

According to the researchers, to better understand if Matthew's intensification was aided by the warm-water eddies and the residing barrier layer in the Caribbean Sea's upper ocean, more ambient and in-storm upper ocean observations in this basin are needed to improve forecast models for the region.

"Upper Ocean Observations in Eastern Caribbean Sea Reveal Barrier Layer within a Warm Core Eddy," as published Feb. 10 in Journal of Geophysical Research: Oceans, DOI: 10.1002/2016JC012339. The study's authors include: Johna E. Rudzin, Lynn "Nick" Shay, Benjamin Jaimes, and Jodi K. Brewster of the UM Rosenstiel School.

SHAKE AND BLOW
Cyclone Dineo batters southern Mozambique, killing 7
Maputo (AFP) Feb 17, 2017
Cyclone Dineo killed seven people, injured 55 and displaced more than 100,000 as it battered southern Mozambique, natural disasters agencies said Friday. The National Institute of Disaster Management said that among the 55 people injured, four were in critical condition. More than 650,000 people in the southeastern African country were also affected since the storm made landfall late Wed ... read more

Related Links
University of Miami Rosenstiel School of Marine and Atmospheric Science
Bringing Order To A World Of Disasters
When the Earth Quakes
A world of storm and tempest


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment on this article using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

SHAKE AND BLOW
Haitians' ire over carnival spending amid hurricane's ruins

Carnival helps Rio put crime, recession on back burner

Study shows parks, greenways may help reduce crime in Chicago

Canada conservationist warns of 'cyber poaching

SHAKE AND BLOW
When Rocket Science Meets X-ray Science

York Space partners with Metropolitan State for Denver satellite facility

NASA team develops modular avionics systems for small missions

Keeping Our Cool in Space

SHAKE AND BLOW
Calculating recharge of groundwater more precisely

New urgency in fight to restore Florida Everglades

Saab to provide support for Swedish navy underwater systems

First direct measurements of Pacific seabed sediments reveal strong methane source

SHAKE AND BLOW
Air pollution may have masked mid-20th Century sea ice loss

International team reports ocean acidification spreading rapidly in Arctic Ocean

Arctic sea ice decline influences European weather

Simple rule predicts when an ice age ends

SHAKE AND BLOW
Widely accepted vision for agriculture may be inaccurate, misleading

'Our daily bread' has hidden climate costs

What's the buzz on bee parasites?

Brexit sows seeds of doubt for British farmers

SHAKE AND BLOW
Study targets warm water rings that fuel hurricane intensification

An insight into a physical phenomenon that leads to earthquakes

Water slowly restored in Chile capital after deadly floods

California requests $440 mn for flood control after dam crisis

SHAKE AND BLOW
France sends backup to Niger after 16 troops killed

UN airstrikes in C.Africa target 'heavily armed' militia

16 killed in three days of DR Congo clashes

I.Coast hosting bid to save its last chimpanzees

SHAKE AND BLOW
Newfound primate teeth take a big bite out of the evolutionary tree of life

Study shows ancient humans arrived in South America in multiple waves

Will naming the Anthropocene lead to acceptance of our planet-level impact

Tiny fibers open new windows into the brain




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement