Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Air-Sea Surface Science

02.05.2007
First-of-its-kind observation and modeling of the air-sea interaction
before, during, and after hurricanes

Aided by new observations from the Coupled Boundary Layer Air-Sea Transfer (CBLAST) – Hurricane field program, scientists at the Rosenstiel School of Marine and Atmospheric Science have helped to develop and test a new, high-resolution computer model to better understand how air-sea interactions directly affect hurricane intensity, a factor not yet possible in the current operational forecast models.

The research, which is featured in the March 2007 issue of the Bulletin of the American Meteorological Society (BAMS), explains that current predictive models used in forecasting hurricane formation and intensity have difficulty accurately representing data such as ocean temperature, surface wind, rain and waves, and pressure and wind-speed relationships. A new fully coupled atmosphere-wave-ocean modeling system is capable of forecasting detailed hurricane inner-core structure, as well as surface temperature and wind, ocean currents, and surface waves that are crucial for improving hurricane intensity forecasts.

The CBLAST – Hurricane field program was conducted from 2002 to 2004 using NOAA's “Hurricane Hunter” aircraft, as well as drifting buoys and subsurface floats deployed ahead of Hurricanes Fabian in 2003, and Frances in 2004. Dr. William Drennan, associate professor of applied marine physics and one of the scientists who participated in the fieldwork, has helped to provide an unprecedented amount of information about how variations in ocean and sea surface conditions can accelerate or inhibit the intensification of hurricanes.

“Measuring processes near the sea-surface in hurricanes is a challenge! The CBLAST field program which brought together many new ideas and techniques has provided a wealth of new data that will help us to improve our understanding of how hurricanes gain and lose energy,” Drennan said

Rosenstiel scientist Dr. Shuyi Chen, a professor of meteorology and physical oceanography, led CBLAST's Hurricane modeling effort. She and other scientists have developed a fully coupled atmosphere-wave-ocean, high-resolution model able to predict the structure of a hurricane eye and eyewall at nearly a 1-km resolution, which is well within the recommendation for next-generation hurricane-prediction models set by the NOAA Science Advisory Board Hurricane Intensity Research Working Group.

“Extreme high winds, intense rainfall, large surface waves, strong ocean currents, and copious sea spray in hurricanes are all difficult to measure, limiting our capability in predicting their effects on hurricane intensity. The new coupled model takes into account the fully interactive nature of the atmosphere and ocean in tropical storms and represents an important first step toward developing the next-generation hurricane prediction models,” Chen said.

The effect of air-sea interactions on hurricane structure and intensity change is the main focus of the CBLAST – Hurricane program. The new, high-resolution model for hurricane research and prediction is a fully integrative modeling system, taking advantage of the new observations from the CBLAST field program to account for data from three important aspects of hurricane modeling. The overall modeling system is comprised of an atmospheric model, a surface wave model, and an ocean circulation model, all of which combine to form an innovative way of modeling storms.

CBLAST – Hurricane modeling and observation efforts were sponsored by the Office of Naval Research (ONR), and involved many scientists from numerous universities as well as from the National Oceanic and Atmospheric Administration (NOAA). “It is one of the most comprehensive studies ever of the way the ocean and atmosphere interact in hurricanes, offering the scientific community new pathways in modeling and observation that will lead to further predictive modeling progress. Improved weather forecasting will have global impacts; helping every nation affected by hurricanes and typhoons,” said Dr. Linwood Vincent, Acting Head of the Ocean, Atmosphere and Space Research Division of ONR.

The 2005 Hurricane season highlighted the urgent need for better understanding of the factors that contribute to hurricane formation and intensity change, and for developing future predictive models to improve intensity forecasts. Scientists are hoping that with improved predictive science will come better preparation and warning for areas affected by tropical storms.

Rosenstiel School is part of the University of Miami and, since its founding in the 1940s, has grown into one of the world's premier marine and atmospheric research institutions. See http://www.rsmas.miami.edu.

Media Contacts:
Ivy Kupec, Communications Director, University of Miami
Rosenstiel School of Marine & Atmospheric Science
305/421-4704 (o) 305/984-7107 (m)
E-mail: ikupec@miami.edu

Ivy F. Kupec | EurekAlert!
Further information:
http://www.miami.edu

More articles from Earth Sciences:

nachricht New Study Will Help Find the Best Locations for Thermal Power Stations in Iceland
19.01.2017 | University of Gothenburg

nachricht Water - as the underlying driver of the Earth’s carbon cycle
17.01.2017 | Max-Planck-Institut für Biogeochemie

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>