date: 2024-04-19T07:41:38Z
pdf:PDFVersion: 1.7
pdf:docinfo:title: An Update of the NeQuick-Corr Topside Ionosphere Modeling Based on New Datasets
xmp:CreatorTool: LaTeX with hyperref
Keywords: Ionospheric topside; NeQuick; IRI model; LEO satellites
access_permission:modify_annotations: true
access_permission:can_print_degraded: true
subject: A new analytical formula for H0, one of the three parameters (H0, g, and r) on which the NeQuick model is based to describe the altitude profile of the electron density above the F2-layer peak height hmF2, has recently been proposed. This new analytical representation of H0, called H0,corr, relies on numerical grids based on two different types of datasets. On one side, electron density observations by the Swarm satellites over Europe from December 2013 to September 2018, and on the other side, IRI UP (International Reference Ionosphere UPdate) maps over Europe of the critical frequency of the ordinary mode of propagation associated with the F2 layer, foF2, and hmF2, at 15 min cadence for the same period. The new NeQuick topside representation based on H0,corr, hereafter referred to as NeQuick-corr, improved the original NeQuick topside representation. This work updates the numerical grids of H0,corr by extending the underlying Swarm and IRI UP datasets until December 2021, thus allowing coverage of low solar activity levels, as well. Moreover, concerning Swarm, besides the original dataset, the calibrated one is considered, and corresponding grids of H0,corr calculated. At the same time, the role of g is investigated, by considering values different from the reference one, equal to 0.125, currently adopted. To understand what are the best H0,corr grids to be considered for the NeQuick-corr topside representation, vertical total electron content data for low, middle, and high latitudes, recorded from five low-Earth-orbit satellite missions (COSMIC/FORMOSAT-3, GRACE, METOP, TerraSAR-X, and Swarm) have been analyzed. The updated H0,corr grids based on the original Swarm dataset with a value for g = 0.15, and the updated H0,corr grids based on the calibrated Swarm dataset with a value for g = 0.14, are those for which the best results are obtained. The results show that the performance of the different NeQuick-corr models is reliable also for low latitudes, even though these are outside the spatial domain for which the H0,corr grids were obtained, and are dependent on solar activity.
dc:creator: Michael Pezzopane, Alessio Pignalberi, Marco Pietrella, Haris Haralambous, Fabricio Prol, Bruno Nava, Artem Smirnov and Chao Xiong
dcterms:created: 2024-04-19T07:30:14Z
Last-Modified: 2024-04-19T07:41:38Z
dcterms:modified: 2024-04-19T07:41:38Z
dc:format: application/pdf; version=1.7
title: An Update of the NeQuick-Corr Topside Ionosphere Modeling Based on New Datasets
Last-Save-Date: 2024-04-19T07:41:38Z
pdf:docinfo:creator_tool: LaTeX with hyperref
access_permission:fill_in_form: true
pdf:docinfo:keywords: Ionospheric topside; NeQuick; IRI model; LEO satellites
pdf:docinfo:modified: 2024-04-19T07:41:38Z
meta:save-date: 2024-04-19T07:41:38Z
pdf:encrypted: false
dc:title: An Update of the NeQuick-Corr Topside Ionosphere Modeling Based on New Datasets
modified: 2024-04-19T07:41:38Z
cp:subject: A new analytical formula for H0, one of the three parameters (H0, g, and r) on which the NeQuick model is based to describe the altitude profile of the electron density above the F2-layer peak height hmF2, has recently been proposed. This new analytical representation of H0, called H0,corr, relies on numerical grids based on two different types of datasets. On one side, electron density observations by the Swarm satellites over Europe from December 2013 to September 2018, and on the other side, IRI UP (International Reference Ionosphere UPdate) maps over Europe of the critical frequency of the ordinary mode of propagation associated with the F2 layer, foF2, and hmF2, at 15 min cadence for the same period. The new NeQuick topside representation based on H0,corr, hereafter referred to as NeQuick-corr, improved the original NeQuick topside representation. This work updates the numerical grids of H0,corr by extending the underlying Swarm and IRI UP datasets until December 2021, thus allowing coverage of low solar activity levels, as well. Moreover, concerning Swarm, besides the original dataset, the calibrated one is considered, and corresponding grids of H0,corr calculated. At the same time, the role of g is investigated, by considering values different from the reference one, equal to 0.125, currently adopted. To understand what are the best H0,corr grids to be considered for the NeQuick-corr topside representation, vertical total electron content data for low, middle, and high latitudes, recorded from five low-Earth-orbit satellite missions (COSMIC/FORMOSAT-3, GRACE, METOP, TerraSAR-X, and Swarm) have been analyzed. The updated H0,corr grids based on the original Swarm dataset with a value for g = 0.15, and the updated H0,corr grids based on the calibrated Swarm dataset with a value for g = 0.14, are those for which the best results are obtained. The results show that the performance of the different NeQuick-corr models is reliable also for low latitudes, even though these are outside the spatial domain for which the H0,corr grids were obtained, and are dependent on solar activity.
pdf:docinfo:subject: A new analytical formula for H0, one of the three parameters (H0, g, and r) on which the NeQuick model is based to describe the altitude profile of the electron density above the F2-layer peak height hmF2, has recently been proposed. This new analytical representation of H0, called H0,corr, relies on numerical grids based on two different types of datasets. On one side, electron density observations by the Swarm satellites over Europe from December 2013 to September 2018, and on the other side, IRI UP (International Reference Ionosphere UPdate) maps over Europe of the critical frequency of the ordinary mode of propagation associated with the F2 layer, foF2, and hmF2, at 15 min cadence for the same period. The new NeQuick topside representation based on H0,corr, hereafter referred to as NeQuick-corr, improved the original NeQuick topside representation. This work updates the numerical grids of H0,corr by extending the underlying Swarm and IRI UP datasets until December 2021, thus allowing coverage of low solar activity levels, as well. Moreover, concerning Swarm, besides the original dataset, the calibrated one is considered, and corresponding grids of H0,corr calculated. At the same time, the role of g is investigated, by considering values different from the reference one, equal to 0.125, currently adopted. To understand what are the best H0,corr grids to be considered for the NeQuick-corr topside representation, vertical total electron content data for low, middle, and high latitudes, recorded from five low-Earth-orbit satellite missions (COSMIC/FORMOSAT-3, GRACE, METOP, TerraSAR-X, and Swarm) have been analyzed. The updated H0,corr grids based on the original Swarm dataset with a value for g = 0.15, and the updated H0,corr grids based on the calibrated Swarm dataset with a value for g = 0.14, are those for which the best results are obtained. The results show that the performance of the different NeQuick-corr models is reliable also for low latitudes, even though these are outside the spatial domain for which the H0,corr grids were obtained, and are dependent on solar activity.
Content-Type: application/pdf
pdf:docinfo:creator: Michael Pezzopane, Alessio Pignalberi, Marco Pietrella, Haris Haralambous, Fabricio Prol, Bruno Nava, Artem Smirnov and Chao Xiong
X-Parsed-By: org.apache.tika.parser.DefaultParser
creator: Michael Pezzopane, Alessio Pignalberi, Marco Pietrella, Haris Haralambous, Fabricio Prol, Bruno Nava, Artem Smirnov and Chao Xiong
meta:author: Michael Pezzopane, Alessio Pignalberi, Marco Pietrella, Haris Haralambous, Fabricio Prol, Bruno Nava, Artem Smirnov and Chao Xiong
dc:subject: Ionospheric topside; NeQuick; IRI model; LEO satellites
meta:creation-date: 2024-04-19T07:30:14Z
created: Fri Apr 19 09:30:14 CEST 2024
access_permission:extract_for_accessibility: true
access_permission:assemble_document: true
xmpTPg:NPages: 25
Creation-Date: 2024-04-19T07:30:14Z
access_permission:extract_content: true
access_permission:can_print: true
meta:keyword: Ionospheric topside; NeQuick; IRI model; LEO satellites
Author: Michael Pezzopane, Alessio Pignalberi, Marco Pietrella, Haris Haralambous, Fabricio Prol, Bruno Nava, Artem Smirnov and Chao Xiong
producer: pdfTeX-1.40.25
access_permission:can_modify: true
pdf:docinfo:producer: pdfTeX-1.40.25
pdf:docinfo:created: 2024-04-19T07:30:14Z