Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Measuring wind patterns

22.04.2004


On hearing the word, “radar”, we usually think of speed controls or air traffic control systems. In fact, there are many kinds of radar and applications thereof.



At Punta Galea in Getxo the Climatology and Meteorology Office of the Basque Government has installed a very special kind of radar: a radar that indicates the patterns of winds; wind patterns at up to 3,000 metres altitude indicating its direction and speed. This is what is special about the radar at Punta Galea.

In normal operation mode, the average wind patterns are obtained every 25 minutes and, moreover, the temperature is measured every 30 minutes. In order to obtain data about winds, the radar sends microwave pulses towards the sky in five directions by means of a multidirectional broadcasting aerial. One of these microwave beams is directed vertically, to the zenith; the other four towards the four cardinal points. Small variations in the atmosphere produce echoes and some of the pulses are reflected back to the radar antenna, where they are detected. The differences in frequency between the waves received and the waves emitted are processed and analysed by the computer and we obtain a representation of the wind pattern with its speed and direction at different altitudes. The interpretation of these results is the job of the researchers and technicians.


Normally wind data is obtained up to 3,000 metres altitude but this altitude varies according to atmospheric conditions. The temperature, on the other hand, measured combining the radar echoes with the emission of acoustic signals, has a lower limit, between 700 and 1,000 metres altitude.

All this data is received both in the Climatology and Meteorology Office and in the Atmosphere Environment Group at the School of Engineering on the Bilbao campus of the University of the Basque Country. Amongst the studies carried out by this research group are those relating to the presence of high-altitude ozone pockets above the Bilbao area, in concentrations that could not be due, in principle, to local emissions. Combining the data obtained from the wind pattern radar device with meteorological models for studying the conditions of ozone movement and direction models, it has been possible to demonstrate the transport of ozone over long distances. Thus, it has been confirmed that, in certain meteorological conditions, the ozone registered over the Basque Country, apart from being produced locally, may come from two other sources: one directly from Britanny and the other from the Ebro river valley, to the south, after passing over the south-west of France and Tarragona respectively, and picking up more ozone precursors.

It should be remembered that ozone is fundamental to life when it is at higher levels of the atmosphere but is dangerous to the health when found at lower levels. This is why it is important to know its patterns of movement and transport.

Eneko Imaz | Basque research
Further information:
http://www.basqueresearch.com/berria_irakurri.asp?Gelaxka=1_1&Berri_Kod=453&hizk=I

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: It’s All in the Mix: Jülich Researchers are Developing Fast-Charging Solid-State Batteries

There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.

The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...

Im Focus: Color effects from transparent 3D-printed nanostructures

New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference

Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

LaserForum 2018 deals with 3D production of components

17.08.2018 | Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

 
Latest News

Quantum bugs, meet your new swatter

20.08.2018 | Information Technology

A novel synthetic antibody enables conditional “protein knockdown” in vertebrates

20.08.2018 | Life Sciences

Metamolds: Molding a mold

20.08.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>