Validation of Aeolus L2B wind product at Porto Velho - Brazil
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2024
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WORKSHOP ON LIDAR MEASUREMENTS IN LATIN AMERICA, 12th
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The Atmospheric Dynamics Mission ADM-Aeolus was successfully launched in August 2018 by the
European Space Agency (ESA). The Aeolus mission carried a single instrument, the first-ever Doppler
Wind Lidar (DWL) in space, called Atmospheric LAser Doppler INstrument (ALADIN). Circling the Earth
in a polar sun-synchronous orbit at about 320 km altitude and a repeat cycle of 7 days, ALADIN
operated at an ultraviolet (UV) wavelength of 355 nm, at a frequency of 50 Hz, providing vertical
profiles of horizontal line-of-sight (HLOS) winds on a global scale. Aeolus's mission exceeded scientific
expectations, initially designed for a 3-year lifetime, providing global coverage of wind profiles for
almost five years. At the end of April 2023, the satellite initiated the assisted reentry process, and on
July 28, 2023, it safely burned up upon reentering the Earth's atmosphere over Antarctica. In this
study, we assessed the accuracy of the L2B wind products by collecting radiosonde data from the
Porto Velho station in the North Region of Brazil (8.76 S, 63.91 W). The Aeolus satellite passed over the
station twice weekly in two different orbits: the descending orbit at 10:04 UTC on Thursdays and the
ascending orbit at 22:25 UTC on Saturdays. In this long-term validation, we focus on the descending
orbit overpasses, comparing Aeolus L2B wind products and radiosondes launched daily at 12:00 UTC.
Statistical validation was performed from October 2018 to March 2023, encompassing the entire
period of the Aeolus mission.
Como referenciar
YOSHIDA, ALEXANDRE C.; LOPES, FABIO J.S.; VENTURINI, PATRICIA C.; CACHEFFO, ALEXANDRE; LANDULFO, EDUARDO. Validation of Aeolus L2B wind product at Porto Velho - Brazil. In: BARJA, BORIS (ed.); LANDULFO, EDUARDO (ed.); LOPES, FABIO J. da S. (ed.). In: WORKSHOP ON LIDAR MEASUREMENTS IN LATIN AMERICA, 12th, April 7-12, 2024, São Paulo, SP. Abstract... p. 50-50. Disponível em: https://repositorio.ipen.br/handle/123456789/48895. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.