Overall complications involved in the instrument caused an estimated 50% final cost overrun, so ESA had to come up with additional funding for the project.[10]. For more details, please visit ESA Earth Online Portal. The mission will thus improve the knowledge of all sorts of weather phenomena, from global warming to the effects of air pollution. ESA scientists asked NASA for support; however, NASA has minimal experience with lidar of this design. This page is the gateway to access and download the free and open Aeolus science data products. For further details about the data quality improvements, please see ESA Earth Online Portal. The main goal of this mission is to further develop the knowledge of Earth's atmosphere and weather systems. [13] One year of usage has resulted in reduced power from the primary laser. It includes tools for studying various atmospheric parameters, in space and time, measured by the Aeolus satellite. Aeolus is seen as a mission that will pave the way for future operational meteorological satellites dedicated to study Earth's wind profiles. In 2014 integration of ALADIN instrument was completed and vacuum along with vibration testing begun. Read more. [10] A €32.57 million launch contract with Arianespace was signed on 7 September 2016. Aeolus, or, in full, Atmospheric Dynamics Mission Aeolus (ADM-Aeolus), is an Earth observation satellite operated by the European Space Agency (ESA). Aeolus was launched in August 2018 to test the usefulness of direct wind profile observations from space for numerical weather prediction. [3] Aeolus is the first satellite capable of observing what the winds are doing on Earth, from the surface of the planet and into the stratosphere 30 km high. [1] ADM-Aeolus is the first satellite with equipment capable of performing global wind-component-profile observation and will provide much-needed information to improve weather forecasting. The satellite completes an orbit around Earth every 90 minutes. [11] The launch finally took place on 22 August 2018 on a Vega rocket from French Guiana at 18:20 local time. [15] The Rayleigh receiver employs a dual-filter Fabry–Pérot interferometer with a 2 GHz resolution and 5 GHz spacing. The spacecraft was built by Airbus Defence and Space. It analyzes the wings of the Rayleigh spectrum with a CCD; the etalon is split into two zones, which are imaged separately on the detector. As from 8 October 2020 Aeolus Near Real Time (NRT) data products are openly available in the latest production baseline 11. It was built by Airbus Defence and Space and launched on 22 August 2018. ESA then decided to switch to a backup laser that had not been used, offering the opportunity to complete the expected 3 year life of the satellite. The wind-component profiles will be measured by the Atmospheric LAser Doppler INstrument (ALADIN). From Tromsø, the data are sent for further processing to the European Centre for Medium-Range Weather Forecasts in Reading, UK, and to ESA’s centre of Earth observation, ESRIN, in Frascati, Italy. Although there are several ways of measuring wind from a satellite, Aeolus will utilise the active Doppler Wind Lidars (DWL) method. Detailed information on the ESA's Wind Earth Explorer Mission, on the relevant Product Format Specifications and data processing algorithms, as well as on data unavailability periods and blacklisted data can be found on the ESA Earth Online Portal.

This dataset continues to be available in production baseline 10.

The orbiter was named after Aeolus, a god from the Greek mythology, the ruler of the winds. For further details about the data quality improvements, please see ESA Earth Online Portal. 2020-09-30. 2. [15] The transmitter architecture is based on a 150 mJ pulsed diode-pumped Nd:YAG laser, frequency-tripled to provide 60 mJ pulses of ultraviolet light at 355 nm. In mid-2019, ESA determined that the UV laser was losing power: it started with pulses of 65 millijoules once it reached orbit, but that energy declined 20 to 30 percent in the first nine months, and was losing one millijoule per week in May. Its altitude is a low 320 km (200 mi)[2] for enough backscattered light sensibility, inducing a short 3.25 years life expectancy.[5]. From Tromsø, the data are sent for further processing to the European Centre for Medium-Range Weather Forecasts in Reading, UK, and to ESA’s centre of Earth observation, ESRIN, in Frascati, Italy. Wind information in thin cloud or at the tops of thick clouds is also attainable; from the data processing, information on other elements like clouds and aerosols can also be extracted. These predictions will be useful in the short-term, since they can be applied to numerical weather prediction in order to make forecasts more accurate. ECMWF started assimilating wind data from the European Space Agency's ground-breaking Aeolus satellite operationally on 9 January 2020 after tests showed that they significantly improve weather forecasts. Launches are separated by dashes ( – ), payloads by dots (. [7]:70, Aeolus was designed to be compatible with many small-capacity launch vehicles such as Vega, Rockot or Dnepr. Access to other products are limited to dedicated expert groups. The Aeolus satellite downlinks its scientific data to the ground station in Svalbard, Norway. Level-0 data are raw data as measured by the Aeolus satellite, Level-1 data are time-series of preliminary science data along the satellite’s orbit where basic calibration has been applied, Level-2A data are time-series of aerosol and cloud layer information along the satellite’s orbit, Level-2B data are time-series of fully processed profiles of wind along the satellite orbit, which are used for weather forecasting at the European Centre for Medium-Range Weather Forecasts, Level-2C data are time series of 3D wind vector profiles along the satellite track, which have been produced by the European Centre for Medium-Range Weather Forecasts model after ingestion of Aeolus Level-2B data.

The ultraviolet laser was causing damage to the optical surfaces in a vacuum.

All rights reserved. The data will be disseminated to the main numerical weather prediction centres in near-real time. The ALADIN instrument (Atmospheric Laser Doppler Instrument) is a direct detection ultraviolet laser lidar consisting of three major elements: a transmitter, a combined Mie and Rayleigh backscattering receiver assembly, and a Cassegrain telescope with a 1.5 metres (4.9 ft) diameter. Technology required for the satellite was pushing the technology envelope; therefore, after problematic development, ESA asked Airbus to perform additional full-model tests in a vacuum before continuing mission development. The Aeolus satellite downlinks its scientific data to the ground station in Svalbard, Norway. Additionally, the Aeolus Level-2C data product is now openly accessible, which provides the ECMWF model wind vectors at the geolocations of assimilated Aeolus L2B winds.

Should you need access to such products, please fill the Data Access request form and send it by e-mail to EOHelp@esa.int. FTP Access: ftps://aeolus-ds.eo.esa.int, i.e. Introducing Aeolus Science in focus Earth's winds Measuring wind Forecasting weather Understanding climate About the mission Facts and figures Aeolus satellite Lasers in space About the launch Operations and data Data flow Data products Multimedia Image gallery Video gallery Documents & … For an estimated €481 million ($568 million) program cost, it should provide 64,000 daily profiles from March or April 2019. Copyright @ ESA European Space Agency.

By recording and monitoring the weather in different parts of the world, Aeolus will allow scientists to build complex weather models, which can then be used to help predict how that environment will behave in the future. As from 8 October 2020 Aeolus Near Real Time (NRT) data products are openly available in the latest production baseline 11. The spacecraft was built by Airbus Defence and Space.

VirES for Aeolus is a highly interactive data manipulation and retrieval interface for ESA's Aeolus mission products. Development of the ALADIN instrument has been problematic. by using explicit FTPS (FTP over SSL/TLS and using passive mode), with your own EO-SSO credentials. Aeolus is the fifth planned satellite in the Living Planet Programme (LPP) of the European Space Agency (ESA). [15][16] The Mie receiver consists of a Fizeau interferometer with a resolution of 100 MHz (equivalent to 18 m/s). You have already liked this page, you can only like it once. The scientific data, however, are downlinked from the satellite to the ground station in Svalbard, Norway. The report[17] also said that the satellite’s orbit at 320 km required re-boosting every week, limiting the satellite's life to the available propellant. © ESA.

The data are then sent to Tromsø for processing to Level-1 and Level-2. [6] In 2014 integration of ALADIN instrument was completed and vacuum along with vibration testing begun. The received backscatter signal produces a linear fringe whose position is directly linked to the wind velocity; the wind speed is determined by the fringe centroid position to better than a tenth of the resolution (1.8 m/s). CODA and HARP. Note that the full collections of Aeolus products can be searched and browsed but currently only wind products (Baseline B10, B11) are publicly available for downloading. Figure 7: Aeolus data flow.

For more details please refer to the online Help Page.

After switching to the second laser, the instrument is meeting mission objectives.[14]. The space laser's data … [8] In November 2013 ESA scheduled the launch on a VEGA in one of the five flights of the VERTA Programme,[6][9] but in 2015 launch was postponed to August 2018 due to problems with their lidar development. In order to download any products of interest, please login with your own ESA EO-SSO account or create one beforehand (Start registration process). [12], The satellite was launched on 22 August 2018. This is the only method that has the potential to provide the required data globally, from direct wind observations. [15] The lidar is aimed 35° from nadir and 90° to the satellite track (on the side away from the Sun).[15]. The data are then sent to Tromsø for processing to Level-1 and Level-2. Additionally, the Aeolus Level-2C data product is now openly accessible, which provides the ECMWF model wind vectors at the geolocations of assimilated Aeolus L2B winds. Artwork: Aeolus circles the Earth at an altitude of 320km Europe's novel wind-measuring satellite, Aeolus, has reached a key milestone in its mission. The access and use of Aeolus products are regulated by the ESA's Data Policy and subject to the acceptance of the specific Terms & Conditions.Users accessing Aeolus products are intrinsically acknowledging and accepting the above. Three months of testing was conducted before including data in weather models. The previous baseline 09 has been reprocessed in baseline 10, which provides users access to a fully homogeneous dataset from 20 April to 8 October 2020. Moreover, the dataset of baseline 10 is now further complemented by the reprocessed L1B and L2B products from 28 June to 31 December 2019. [15] This frequency was chosen because of the increased Rayleigh scattering in the ultraviolet region of the spectrum, and because it is eye-safe at distances greater than several hundred metres. [4]

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