HYPERNETS: a network of automated hyperspectral radiometers to validate water and land surface reflectance (380–1680 nm) from all satellite missions
Satellites are now routinely used for measuring water and land surface reflectance and hence environmentally relevant parameters such as aquatic chlorophyll a concentration and terrestrial vegetation indices. For each satellite mission, radiometric validation is needed at bottom of atmosphere for al...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-04-01
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| Series: | Frontiers in Remote Sensing |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/frsen.2024.1372085/full |
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| author | Kevin G. Ruddick Agnieszka Bialek Vittorio E. Brando Pieter De Vis Ana I. Dogliotti David Doxaran Philippe Goryl Clémence Goyens Joel Kuusk Daniel Spengler Kevin R. Turpie Quinten Vanhellemont |
| author_facet | Kevin G. Ruddick Agnieszka Bialek Vittorio E. Brando Pieter De Vis Ana I. Dogliotti David Doxaran Philippe Goryl Clémence Goyens Joel Kuusk Daniel Spengler Kevin R. Turpie Quinten Vanhellemont |
| author_sort | Kevin G. Ruddick |
| collection | DOAJ |
| description | Satellites are now routinely used for measuring water and land surface reflectance and hence environmentally relevant parameters such as aquatic chlorophyll a concentration and terrestrial vegetation indices. For each satellite mission, radiometric validation is needed at bottom of atmosphere for all spectral bands and covering all typical conditions where the satellite data will be used. Existing networks such as AERONET-OC for water and RadCalNet for land provide vital information for validation, but (AERONET-OC) do not cover all spectral bands or (RadCalNet) do not cover all surface types and viewing angles. In this Perspective Article we discuss recent advances in instrumentation, measurement methods and uncertainty estimation in the field of optical radiometry and put forward the viewpoint that a new network of automated hyperspectral radiometers is needed for multi-mission radiometric validation of water and land surface reflectance. The HYPERNETS federated network concept is described, providing a context for research papers on specific aspects of the network. This network is unique in its common approach to both land and water surfaces. The common aspects and the differences between land and water measurements are explained. Based on early enthusiasm for HYPERNETS data from validation-oriented workshops, it is our viewpoint that this new network of automated hyperspectral radiometers will be useful for multi-mission radiometric validation of water and multi-angle land surface reflectance. The HYPERNETS network has strong synergy with other measurement networks (AERONET, AERONET-OC, RadCalNet, FLUXNET, ICOS, skycam, etc.) and with optional supplementary measurements, e.g., water turbidity and fluorescence, land surface temperature and soil moisture, etc. |
| first_indexed | 2024-04-24T11:36:48Z |
| format | Article |
| id | doaj.art-ebbc6848d79e48b5b0f477e251600b5e |
| institution | Directory Open Access Journal |
| issn | 2673-6187 |
| language | English |
| last_indexed | 2024-04-24T11:36:48Z |
| publishDate | 2024-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Remote Sensing |
| spelling | doaj.art-ebbc6848d79e48b5b0f477e251600b5e2024-04-10T05:02:14ZengFrontiers Media S.A.Frontiers in Remote Sensing2673-61872024-04-01510.3389/frsen.2024.13720851372085HYPERNETS: a network of automated hyperspectral radiometers to validate water and land surface reflectance (380–1680 nm) from all satellite missionsKevin G. Ruddick0Agnieszka Bialek1Vittorio E. Brando2Pieter De Vis3Ana I. Dogliotti4David Doxaran5Philippe Goryl6Clémence Goyens7Joel Kuusk8Daniel Spengler9Kevin R. Turpie10Quinten Vanhellemont11Royal Belgian Institute of Natural Sciences (RBINS), Brussels, BelgiumNational Physical Laboratory (NPL), Teddington, United KingdomCNR-ISMAR, Istituto di Scienze Marine, Consiglio Nazionale delle Ricerche, Rome, ItalyNational Physical Laboratory (NPL), Teddington, United KingdomInstituto de Astronomía y Física del Espacio, Consejo Nacional de Investigaciones Científicas y Técnicas (IAFE, CONICET/UBA, University of Buenos Aires), Buenos Aires, ArgentinaLaboratoire d’Océanographie de Villefranche (LOV), Sorbonne Université/CNRS, Villefranche-sur-Mer, FranceEuropean Space Agency (ESA), Frascati, ItalyRoyal Belgian Institute of Natural Sciences (RBINS), Brussels, BelgiumTartu Observatory, University of Tartu (UT), Tartu, EstoniaDeutsches GeoForschungsZentrum (GFZ), Potsdam, GermanyUniversity of Maryland Baltimore County (UMBC), Baltimore, MD, United StatesRoyal Belgian Institute of Natural Sciences (RBINS), Brussels, BelgiumSatellites are now routinely used for measuring water and land surface reflectance and hence environmentally relevant parameters such as aquatic chlorophyll a concentration and terrestrial vegetation indices. For each satellite mission, radiometric validation is needed at bottom of atmosphere for all spectral bands and covering all typical conditions where the satellite data will be used. Existing networks such as AERONET-OC for water and RadCalNet for land provide vital information for validation, but (AERONET-OC) do not cover all spectral bands or (RadCalNet) do not cover all surface types and viewing angles. In this Perspective Article we discuss recent advances in instrumentation, measurement methods and uncertainty estimation in the field of optical radiometry and put forward the viewpoint that a new network of automated hyperspectral radiometers is needed for multi-mission radiometric validation of water and land surface reflectance. The HYPERNETS federated network concept is described, providing a context for research papers on specific aspects of the network. This network is unique in its common approach to both land and water surfaces. The common aspects and the differences between land and water measurements are explained. Based on early enthusiasm for HYPERNETS data from validation-oriented workshops, it is our viewpoint that this new network of automated hyperspectral radiometers will be useful for multi-mission radiometric validation of water and multi-angle land surface reflectance. The HYPERNETS network has strong synergy with other measurement networks (AERONET, AERONET-OC, RadCalNet, FLUXNET, ICOS, skycam, etc.) and with optional supplementary measurements, e.g., water turbidity and fluorescence, land surface temperature and soil moisture, etc.https://www.frontiersin.org/articles/10.3389/frsen.2024.1372085/fullsatellite validationhyperspectral reflectancein situ measurementsautomated networkradiometry |
| spellingShingle | Kevin G. Ruddick Agnieszka Bialek Vittorio E. Brando Pieter De Vis Ana I. Dogliotti David Doxaran Philippe Goryl Clémence Goyens Joel Kuusk Daniel Spengler Kevin R. Turpie Quinten Vanhellemont HYPERNETS: a network of automated hyperspectral radiometers to validate water and land surface reflectance (380–1680 nm) from all satellite missions Frontiers in Remote Sensing satellite validation hyperspectral reflectance in situ measurements automated network radiometry |
| title | HYPERNETS: a network of automated hyperspectral radiometers to validate water and land surface reflectance (380–1680 nm) from all satellite missions |
| title_full | HYPERNETS: a network of automated hyperspectral radiometers to validate water and land surface reflectance (380–1680 nm) from all satellite missions |
| title_fullStr | HYPERNETS: a network of automated hyperspectral radiometers to validate water and land surface reflectance (380–1680 nm) from all satellite missions |
| title_full_unstemmed | HYPERNETS: a network of automated hyperspectral radiometers to validate water and land surface reflectance (380–1680 nm) from all satellite missions |
| title_short | HYPERNETS: a network of automated hyperspectral radiometers to validate water and land surface reflectance (380–1680 nm) from all satellite missions |
| title_sort | hypernets a network of automated hyperspectral radiometers to validate water and land surface reflectance 380 1680 nm from all satellite missions |
| topic | satellite validation hyperspectral reflectance in situ measurements automated network radiometry |
| url | https://www.frontiersin.org/articles/10.3389/frsen.2024.1372085/full |
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