G
Gareth Roberts
Researcher at University of Southampton
Publications - 57
Citations - 5484
Gareth Roberts is an academic researcher from University of Southampton. The author has contributed to research in topics: Moderate-resolution imaging spectroradiometer & Land cover. The author has an hindex of 24, co-authored 57 publications receiving 4699 citations. Previous affiliations of Gareth Roberts include University College London & University Hospital Southampton NHS Foundation Trust.
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Journal ArticleDOI
First operational BRDF, albedo nadir reflectance products from MODIS
Crystal B. Schaaf,Feng Gao,Alan H. Strahler,Wolfgang Lucht,Xiaowen Li,Trevor Tsang,Nicholas C. Strugnell,Xiaoyang Zhang,Yufang Jin,Jan-Peter Muller,Philip Lewis,M. J. Barnsley,P. Hobson,Mathias Disney,Gareth Roberts,Michael Dunderdale,Christopher N.H. Doll,Robert P. d'Entremont,Baoxin Hu,Shunlin Liang,Jeffrey L. Privette,David P. Roy +21 more
TL;DR: The MODIS BRDF/Albedo algorithm makes use of a semi-empirical kernel-driven bidirectional reflectance model and multidate, multispectral data to provide global 1-km gridded and tiled products of the land surface every 16 days.
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Retrieval of biomass combustion rates and totals from fire radiative power observations: FRP derivation and calibration relationships between biomass consumption and fire radiative energy release
TL;DR: In this paper, the authors present results from a sensitivity analysis and from experimental fires conducted to investigate the relationship between fire radiative energy (FRE) and fuel mass combusted, and they conclude that FRE assessment offers a powerful tool for supplementing existing burned-area based fuel consumption measures.
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Annual and diurnal african biomass burning temporal dynamics
TL;DR: In this paper, the first analysis of one full year of geostationary active fire detections and fire radiative power data recorded over Africa at 15-min temporal interval and a 3 km sub-satellite spatial resolution by the Spinning Enhanced Visible and Infrared Imager (SEVIRI) imaging radiometer onboard the Meteosat-8 satellite was conducted.
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Southern African Fire Regimes as Revealed by Remote Sensing
Sally Archibald,Sally Archibald,Robert J. Scholes,Robert J. Scholes,David P. Roy,Gareth Roberts,Luigi Boschetti +6 more
TL;DR: In this paper, the authors integrated spatial information on annual burnt area, fire frequency, fire seasonality, fire radiative power and fire size distributions to produce an integrated picture of fire regimes in southern Africa.
Journal ArticleDOI
Retrieval of biomass combustion rates and totals from fire radiative power observations: Application to southern Africa using geostationary SEVIRI imagery
Gareth Roberts,Martin J. Wooster,George L. W. Perry,George L. W. Perry,Nick Drake,Lisa-Maria Rebelo,Frederick M. Dipotso +6 more
TL;DR: In this article, the authors present the first retrievals from SEVIRI and compare them to those derived from near-coincident MODIS overpasses. But the results are limited to the case of fire pixels with FRP < ∼100 MW.