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Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data †

This paper contains results from a study where numerical weather product (NWP) data provided by MET Norway were used to estimate the differential zenith tropospheric delay (dZTD) for an area including Scandinavia, Finland and the Baltic countries. The NWP data have a high spatial resolution of [Form...

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Autores principales: Håkegård, Jan Erik, Sokolova, Nadezda, Morrison, Aiden
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9919711/
https://www.ncbi.nlm.nih.gov/pubmed/36772277
http://dx.doi.org/10.3390/s23031237
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author Håkegård, Jan Erik
Sokolova, Nadezda
Morrison, Aiden
author_facet Håkegård, Jan Erik
Sokolova, Nadezda
Morrison, Aiden
author_sort Håkegård, Jan Erik
collection PubMed
description This paper contains results from a study where numerical weather product (NWP) data provided by MET Norway were used to estimate the differential zenith tropospheric delay (dZTD) for an area including Scandinavia, Finland and the Baltic countries. The NWP data have a high spatial resolution of [Formula: see text] km, and the estimated dZTD for the grid positions allows for calculation of the tropospheric gradient on short baselines. The results give an indication of how large dZTD values for baselines of up to 20 km can be, and of where the largest events are located within the coverage area. One year of data were processed, and dZTD values up to 18 cm with baselines were detected. Preliminary results comparing the NWP-based results with GNSS-based results are included. The motivation for this investigation was to better understand the characteristics of this phenomenon as a preamble to a later investigation of how it might impact GNSS-based navigation systems with integrity support in these regions.
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spelling pubmed-99197112023-02-12 Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data † Håkegård, Jan Erik Sokolova, Nadezda Morrison, Aiden Sensors (Basel) Article This paper contains results from a study where numerical weather product (NWP) data provided by MET Norway were used to estimate the differential zenith tropospheric delay (dZTD) for an area including Scandinavia, Finland and the Baltic countries. The NWP data have a high spatial resolution of [Formula: see text] km, and the estimated dZTD for the grid positions allows for calculation of the tropospheric gradient on short baselines. The results give an indication of how large dZTD values for baselines of up to 20 km can be, and of where the largest events are located within the coverage area. One year of data were processed, and dZTD values up to 18 cm with baselines were detected. Preliminary results comparing the NWP-based results with GNSS-based results are included. The motivation for this investigation was to better understand the characteristics of this phenomenon as a preamble to a later investigation of how it might impact GNSS-based navigation systems with integrity support in these regions. MDPI 2023-01-21 /pmc/articles/PMC9919711/ /pubmed/36772277 http://dx.doi.org/10.3390/s23031237 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Håkegård, Jan Erik
Sokolova, Nadezda
Morrison, Aiden
Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data †
title Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data †
title_full Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data †
title_fullStr Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data †
title_full_unstemmed Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data †
title_short Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data †
title_sort analysis of spatial decorrelation of small-scale tropospheric delay using high-resolution nwp data †
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9919711/
https://www.ncbi.nlm.nih.gov/pubmed/36772277
http://dx.doi.org/10.3390/s23031237
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