Interpretation of the Tropospheric Gradients Estimated With GPS During Hurricane Harvey

During the last decade Global Positioning System (GPS) Continuous Operating Reference Stations networks have become a new important data source for meteorology. This has dramatically improved the ability to remotely sense the atmosphere under the influence of severe mesoscale and synoptic systems. T...

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Detalles Bibliográficos
Autores principales:	Graffigna, Victoria, Hernández Pajares, Manuel, Gende, Mauricio Alfredo, Azpilicueta, Francisco Javier, Antico, Pablo
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2019
Materias:	Ciencias Astronómicas Tropospheric gradients Zenith tropospheric delay Hurricane Aabsolute positioning Relative positioning GNSS
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/119112
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-119112
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Astronómicas Tropospheric gradients Zenith tropospheric delay Hurricane Aabsolute positioning Relative positioning GNSS
spellingShingle	Ciencias Astronómicas Tropospheric gradients Zenith tropospheric delay Hurricane Aabsolute positioning Relative positioning GNSS Graffigna, Victoria Hernández Pajares, Manuel Gende, Mauricio Alfredo Azpilicueta, Francisco Javier Antico, Pablo Interpretation of the Tropospheric Gradients Estimated With GPS During Hurricane Harvey
topic_facet	Ciencias Astronómicas Tropospheric gradients Zenith tropospheric delay Hurricane Aabsolute positioning Relative positioning GNSS
description	During the last decade Global Positioning System (GPS) Continuous Operating Reference Stations networks have become a new important data source for meteorology. This has dramatically improved the ability to remotely sense the atmosphere under the influence of severe mesoscale and synoptic systems. The zenith tropospheric delay (ZTD) is one of the atmospheric variables continuously observed, and its horizontal variations, the horizontal tropospheric gradients, are routinely computed nowadays within the dual-frequency GPS processing, but their interpretation and relationship with the weather is still an open question. The purpose of this paper is to contribute in this direction by studying the effect that Hurricane Harvey had on the spatial and temporal behavior of the ZTDs and gradients, when it reached Texas coast, during 18–31 August 2017. The results show that ZTD time series present a clear and rapid increase larger than 10 cm in a few hours when the hurricane reached the area. Gradients behaviors show that the hurricane also produced significant changes on them, since the magnitude and predominant directions before and after the hurricane arrived are completely different. Noticeably, the gradient vectors before the landing are consistently related to the horizontal winds and pressure fields. In this manuscript we demonstrate that the ZTD gradients can show a consistent signature under severe weather events, strongly suggesting their potential application for short-term weather forecasting.
format	Articulo Articulo
author	Graffigna, Victoria Hernández Pajares, Manuel Gende, Mauricio Alfredo Azpilicueta, Francisco Javier Antico, Pablo
author_facet	Graffigna, Victoria Hernández Pajares, Manuel Gende, Mauricio Alfredo Azpilicueta, Francisco Javier Antico, Pablo
author_sort	Graffigna, Victoria
title	Interpretation of the Tropospheric Gradients Estimated With GPS During Hurricane Harvey
title_short	Interpretation of the Tropospheric Gradients Estimated With GPS During Hurricane Harvey
title_full	Interpretation of the Tropospheric Gradients Estimated With GPS During Hurricane Harvey
title_fullStr	Interpretation of the Tropospheric Gradients Estimated With GPS During Hurricane Harvey
title_full_unstemmed	Interpretation of the Tropospheric Gradients Estimated With GPS During Hurricane Harvey
title_sort	interpretation of the tropospheric gradients estimated with gps during hurricane harvey
publishDate	2019
url	http://sedici.unlp.edu.ar/handle/10915/119112
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bdutipo_str	Repositorios
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Interpretation of the Tropospheric Gradients Estimated With GPS During Hurricane Harvey

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