Monday 21 January 2019 ,
Monday 21 January 2019 ,
Latest News
  • Work for uprooting corruption, drug, militancy: PM
  • Rohingya crisis: Bangladesh seeks Singapore's support
  • Ruling party men turned reckless with ‘diabolic joy’: BNP
  • Gulshan café attack accused ‘militant’ held
19 August, 2018 03:34:24 PM
Print

First satellite to measure global winds set for launch

Independent Online Desk
First satellite to measure global winds set for launch
Once in orbit, Aeolus can retrieve data from anywhere on the planet, including remote regions that lack ground-based weather stations. (European Space Agency)

A satellite designed to measure Earth’s global wind patterns is set to be hoisted into orbit Tuesday from the Arianespace launch site in French Guiana.

The European Space Agency’s (ESA) Aeolus mission — named for the guardian of wind in Greek mythology — promises to improve short-term weather forecasting and our understanding of manmade climate change.

“Meteorologists urgently need reliable wind-profile data to improve accuracy,” the ESA said in a statement.

Tropical winds in particular are very poorly mapped because of the almost complete absence of direct observations. Once in orbit, Aeolus can retrieve data from anywhere on the planet, include remote regions lacking ground-based weather stations.

The satellite will carry a large telescope measuring 1.5 metres (five feet) across, an ultra-sensitive receiver, and a Doppler wind lidar, nicknamed Aladin.

The Doppler lidar transmits short, powerful pulses of laser light toward Earth in the ultraviolet spectrum. Particles in the air — moisture, dust, gases — scatter a small fraction of that light energy back to the transceiver, where it is collected and recorded.

The delay between the outgoing pulse and the so-called “backscattered” signal reveals the wind’s direction, speed and distance travelled.

Once per orbit, data is downloaded to a ground station in Svalbard, Norway.

The 1,260-kilo (3,000-pound) payload will be hoisted into a 320-kilometre (200-mile) orbit on a Vega rocket, with lift-off scheduled for Tuesday at 21:00 GMT.

Aeolus will be the fifth of the ESA’s planned Earth Explorer missions.

Others already completed or in operation have measured Earth’s gravity and geomagnetic fields, soil moisture, ocean salinity and frozen expanses collectively known as the cryosphere.

The new mission will be Arianespace’s 50th launch for the European Space Agency.AFP.

KK

Comments

Poll
Today's Question »
State minister for power Nasrul Hamid yesterday said everyone to have access to electricity by June. Do you think the feat achievable by the timeframe?
 Yes
 No
 No Comment
Yes 30.3%
No 64.2%
No Comment 5.6%
Video
More Science & Tech Stories
Nasa, China collaborate on Moon exploration The space agencies of the United States and China are coordinating efforts on Moon exploration, Nasa said on Friday (Jan 18), as it navigates a strict legal framework aimed at protecting national security and preventing technology…

Copyright © All right reserved.

Editor : M. Shamsur Rahman

Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Editor : M. Shamsur Rahman
Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Disclaimer & Privacy Policy
....................................................
About Us
....................................................
Contact Us
....................................................
Advertisement
....................................................
Subscription

Powered by : Frog Hosting