Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


NASA analyzed the winds of Tropical Storm Ana


In mid-May 2015, Ana became the first named tropical storm of the North Atlantic hurricane season. May is early to see large storms in the Atlantic; the season begins in earnest on June 1. But on May 10, Tropical Storm Ana made landfall along the Carolina coast and carried maximum sustained winds of 74 kilometers per hour (46 miles per hour).

Scientists took the opportunity to observe Ana's wind dynamics with the International Space Station-Rapid Scatterometer (ISS-RapidScat). The instrument, which joined NASA's Earth observing fleet in September 2015, measures ocean surface wind speed and direction from orbit on the International Space Station.

In this RapidScat wind data image from May 8, 2015 arrows represent the direction of near-surface winds. Shades of blue indicate the range of wind speeds (lighter blue and green represent faster-moving winds).

Credits: NASA Earth Observatory/Joshua Stevens/JPL

An image of Ana's winds was produced at NASA's Goddard Space Flight Center in Greenbelt, Maryland using data acquired by RapidScat as Ana approached the coast on the afternoon of May 8, 2015.

Arrows represent the direction of near-surface winds. Shades of blue indicate the range of wind speeds (lighter blue and green represent faster-moving winds).

RapidScat does not measure storms' wind speed and direction directly. Instead, microwave pulses from the instrument reflect off the ocean surface and back toward the sensor.

Rough waters--those disturbed more by wind--return a stronger signal than smooth waters. From that information, scientists can derive wind speed, as well as its direction based on the position of the waves.

The nature of this measurement method means that RapidScat is describing the winds close to the ocean's surface--useful information for weather forecasting and climate studies.

Higher up in a storm, winds can be even faster. At altitudes above about 500-1,000 meters (1,600-3,300 feet), winds no longer feel the effects of friction from the surface.

For more information:

Rob Gutro | EurekAlert!

Further reports about: Goddard Space Flight Center NASA Space measure ocean surface wind speed wind speeds winds

More articles from Earth Sciences:

nachricht UCI and NASA document accelerated glacier melting in West Antarctica
26.10.2016 | University of California - Irvine

nachricht Ice shelf vibrations cause unusual waves in Antarctic atmosphere
25.10.2016 | American Geophysical Union

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Novel light sources made of 2D materials

Physicists from the University of Würzburg have designed a light source that emits photon pairs. Two-photon sources are particularly well suited for tap-proof data encryption. The experiment's key ingredients: a semiconductor crystal and some sticky tape.

So-called monolayers are at the heart of the research activities. These "super materials" (as the prestigious science magazine "Nature" puts it) have been...

Im Focus: Etching Microstructures with Lasers

Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.

This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Prototype device for measuring graphene-based electromagnetic radiation created

28.10.2016 | Power and Electrical Engineering

Gamma ray camera offers new view on ultra-high energy electrons in plasma

28.10.2016 | Physics and Astronomy

When fat cells change their colour

28.10.2016 | Life Sciences

More VideoLinks >>>