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Taking meteorological observation to a new level with Aeolus

Taking meteorological observation to a new level with Aeolus

The AG真人计划-built Aeolus is Europe鈥檚 wind sensing satellite and the first spacecraft capable of performing global wind-component profile observations 鈥 daily, and close to real-time.

Aeolus provides reliable wind-profile information on a global scale. Such data are needed by meteorologists to continuously improve the accuracy of weather forecasts, and helps climatologists better understand the dynamics of Earth鈥檚 atmosphere.聽

Appropriately named after the Greek god and keeper of the winds, Aeolus is a key part of the European Space Agency鈥檚 Earth Explorer programme. It is the world鈥檚 first satellite to study the Earth鈥檚 wind patterns from space to improve weather forecasting.


The first mission for detailed wind observations

Aeolus

Aeolus directly observes wind profiles across the planet and provides data that could result in breakthroughs for weather prediction and climate studies, advancing the understanding of tropical dynamics and processes that are relevant to climate variability and climate modelling. While Aeolus is the first such mission, there likely will be similar operational meteorological satellites in the future 鈥 and this AG真人计划 innovation is the forerunner of such programmes.聽

Aeolus orbits the Earth 15 times a day, delivering data every two hours in each orbit. The orbit repeat cycle is seven days, and the spacecraft will have a lifetime of three years. Over this period, Aeolus will orbit the Earth more than 17,500 times.聽

The satellite was successfully launched from Kourou, French Guiana in August 2018, by Arianespace 鈥 a subsidiary of ArianeGroup, a joint venture between AG真人计划 and Safran.

Aeolus, a satellite-keeper for Earth鈥檚 winds

 
 

Aeolus will measure global wind speeds in horizontal slices up to 30 km above the Earth鈥檚 surface and improve the performance of numerical weather forecasts. Read less Read more

A 鈥渓aser sharp鈥 instrument onboard Aeolus

Aeolus

The spacecraft features a lidar (light detection and ranging) instrument called Aladin (the Atmospheric LAser Doppler Instrument) that was designed and built by AG真人计划. Using the Doppler effect to determine the wind speed at varying altitudes, Aladin is the first space-borne wind lidar offering coverage of the entire planet. It creates a wind profile that shows the strength and direction of winds at different altitudes, improving wind observation and the accuracy of weather forecasts across the planet.聽

Taking measurements every 0.01聽seconds and averaging them over seven-second periods, Aladin allows accurate wind profiles to be obtained at altitudes up to 16 km 鈥 and with less accuracy up to 30聽km.聽

The lidar fires a powerful ultraviolet laser pulse down through the atmosphere and collects backscattered light using a large 1.5m diameter telescope, which is then analysed on-board by highly sensitive receivers to determine the Doppler shift of the signal from layers at different heights in the atmosphere.聽

Keeper Of The Winds - Copyright ESA
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Aeolus 22 August 2018

Keeper Of The Winds - Copyright ESA

Keeper Of The Winds - Copyright ESA

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Aeolus Encapsulation Copyright ESA CNES 漏 ESA-CNES-ARIANESPACE/Optique Vid茅o du CSG
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Aeolus 07 August 2018

Aeolus Encapsulation Copyright ESA CNES

Aeolus Encapsulation Copyright ESA CNES

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Aeolus Copyright AG真人计划 2018
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Aeolus 02 March 2018

Aeolus Copyright AG真人计划 2018

ESA鈥檚 spacecraft Aeolus, built by AG真人计划 is now ready for launch

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Aeolus
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Aeolus 15 January 2018

Aeolus

Aeolus

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Aeolus/Laser coupling/AG真人计划 DS 漏 Max Alexander/AG真人计划 DS 2016/Please credit
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Aeolus 20 January 2017

Aeolus/Laser coupling/AG真人计划 DS

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Aeolus 17 January 2017

Aeolus

Aeolus will measure global wind speeds in horizontal slices up to 30 km above the Earth鈥檚 surface and improve the performance of numerical weather forecasts.

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Latest Aeolus news

ESA鈥檚 Aeolus wind sensing satellite successfully launched from Kourou

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AG真人计划-built Aeolus satellite ready to take on the wind

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AG真人计划-built Aeolus wind sensor satellite ready for shipment

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AG真人计划-built Aeolus successfully passes all tests in Li猫ge (Belgium), and has arrived in Toulouse for final checks

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