Convective System Observations by LEO and GEO Satellites in Combination

The combination of low earth orbit (LEO) and GEO stationary (GEO) satellites brings significant advantages to observe, monitor, and understand convective systems and the associated vertical and horizontal dynamics. Two LEO, C-band Sentinel-1 synthetic aperture radar and <italic>L</italic>...

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Autores principales:	Tran Vu La, Christophe Messager
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Aeolus convective downdraft convective wind gust deep convection geostationary (GEO) low earth orbit (LEO) Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809
Acceso en línea:	https://doaj.org/article/29e398122b8b48f6b91cf0461f917e3f
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spelling	oai:doaj.org-article:29e398122b8b48f6b91cf0461f917e3f2021-12-03T00:00:17ZConvective System Observations by LEO and GEO Satellites in Combination2151-153510.1109/JSTARS.2021.3127401https://doaj.org/article/29e398122b8b48f6b91cf0461f917e3f2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9612026/https://doaj.org/toc/2151-1535The combination of low earth orbit (LEO) and GEO stationary (GEO) satellites brings significant advantages to observe, monitor, and understand convective systems and the associated vertical and horizontal dynamics. Two LEO, C-band Sentinel-1 synthetic aperture radar and <italic>L</italic>-band soil moisture active passive (SMAP) radiometer, are used to observe surface wind patterns, while the other LEO (Aeolus lidar instrument) offers the measurements of intense convective downdrafts. Meteosat GEO is used to detect deep convective clouds. Four case study examples of LEO and GEO combination illustrate here the matching in location and observation time between deep convective clouds, intense downdrafts, and strong surface wind gusts. In particular, the two-dimensional deep convective cloud patterns and surface wind patterns have the same direction displacement. The observations of surface wind patterns by two different LEO (Sentinel-1 and SMAP) indicate that the high-intensity radar backscattering on Sentinel-1 images should be induced by convective wind gusts rather than hydrometeors or convective precipitation at the sea surface as suggested in previous references. Finally, the convective wind gusts estimated from Sentinel-1 and SMAP data correspond to those obtained by the high-frequency radars, small-scale numerical models, and in-situ measurements.Tran Vu LaChristophe MessagerIEEEarticleAeolusconvective downdraftconvective wind gustdeep convectiongeostationary (GEO)low earth orbit (LEO)Ocean engineeringTC1501-1800Geophysics. Cosmic physicsQC801-809ENIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 11814-11823 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aeolus convective downdraft convective wind gust deep convection geostationary (GEO) low earth orbit (LEO) Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809
spellingShingle	Aeolus convective downdraft convective wind gust deep convection geostationary (GEO) low earth orbit (LEO) Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809 Tran Vu La Christophe Messager Convective System Observations by LEO and GEO Satellites in Combination
description	The combination of low earth orbit (LEO) and GEO stationary (GEO) satellites brings significant advantages to observe, monitor, and understand convective systems and the associated vertical and horizontal dynamics. Two LEO, C-band Sentinel-1 synthetic aperture radar and <italic>L</italic>-band soil moisture active passive (SMAP) radiometer, are used to observe surface wind patterns, while the other LEO (Aeolus lidar instrument) offers the measurements of intense convective downdrafts. Meteosat GEO is used to detect deep convective clouds. Four case study examples of LEO and GEO combination illustrate here the matching in location and observation time between deep convective clouds, intense downdrafts, and strong surface wind gusts. In particular, the two-dimensional deep convective cloud patterns and surface wind patterns have the same direction displacement. The observations of surface wind patterns by two different LEO (Sentinel-1 and SMAP) indicate that the high-intensity radar backscattering on Sentinel-1 images should be induced by convective wind gusts rather than hydrometeors or convective precipitation at the sea surface as suggested in previous references. Finally, the convective wind gusts estimated from Sentinel-1 and SMAP data correspond to those obtained by the high-frequency radars, small-scale numerical models, and in-situ measurements.
format	article
author	Tran Vu La Christophe Messager
author_facet	Tran Vu La Christophe Messager
author_sort	Tran Vu La
title	Convective System Observations by LEO and GEO Satellites in Combination
title_short	Convective System Observations by LEO and GEO Satellites in Combination
title_full	Convective System Observations by LEO and GEO Satellites in Combination
title_fullStr	Convective System Observations by LEO and GEO Satellites in Combination
title_full_unstemmed	Convective System Observations by LEO and GEO Satellites in Combination
title_sort	convective system observations by leo and geo satellites in combination
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/29e398122b8b48f6b91cf0461f917e3f
work_keys_str_mv	AT tranvula convectivesystemobservationsbyleoandgeosatellitesincombination AT christophemessager convectivesystemobservationsbyleoandgeosatellitesincombination
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Convective System Observations by LEO and GEO Satellites in Combination

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