Global surface net-radiation at 5 km from MODIS Terra

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dc.contributor.authorVerma, Manish
dc.contributor.authorFisher, Joshua
dc.contributor.authorMallick, Kaniska
dc.contributor.authorRyu, Youngryel
dc.contributor.authorKobayashi, Hideki
dc.contributor.authorGuillaume, Alexandre
dc.contributor.authorMoore, Gregory
dc.contributor.authorRamakrishnan, Lavanya
dc.contributor.authorHendrix, Valerie
dc.contributor.authorWolf, Sebastian
dc.contributor.authorSikka, Munish
dc.contributor.authorKiely, Gerard
dc.contributor.authorWohlfahrt, Georg
dc.contributor.authorGielen, Bert
dc.contributor.authorRoupsard, Olivier
dc.contributor.authorToscano, Piero
dc.contributor.authorArain, Altaf
dc.contributor.authorCescatti, Alessandro
dc.contributor.funderAustralian Research Council
dc.contributor.funderEuropean Commission
dc.date.accessioned2016-09-27T16:08:23Z
dc.date.available2016-09-27T16:08:23Z
dc.date.issued2016-09
dc.date.updated2016-09-27T16:00:47Z
dc.description.abstractReliable and fine resolution estimates of surface net-radiation are required for estimating latent and sensible heat fluxes between the land surface and the atmosphere. However, currently, fine resolution estimates of net-radiation are not available and consequently it is challenging to develop multi-year estimates of evapotranspiration at scales that can capture land surface heterogeneity and are relevant for policy and decision-making. We developed and evaluated a global net-radiation product at 5 km and 8-day resolution by combining mutually consistent atmosphere and land data from the Moderate Resolution Imaging Spectroradiometer (MODIS) on board Terra. Comparison with net-radiation measurements from 154 globally distributed sites (414 site-years) from the FLUXNET and Surface Radiation budget network (SURFRAD) showed that the net-radiation product agreed well with measurements across seasons and climate types in the extratropics (Wilmott’s index ranged from 0.74 for boreal to 0.63 for Mediterranean sites). Mean absolute deviation between the MODIS and measured net-radiation ranged from 38.0 ± 1.8 W∙m−2 in boreal to 72.0 ± 4.1 W∙m−2 in the tropical climates. The mean bias was small and constituted only 11%, 0.7%, 8.4%, 4.2%, 13.3%, and 5.4% of the mean absolute error in daytime net-radiation in boreal, Mediterranean, temperate-continental, temperate, semi-arid, and tropical climate, respectively. To assess the accuracy of the broader spatiotemporal patterns, we upscaled error-quantified MODIS net-radiation and compared it with the net-radiation estimates from the coarse spatial (1° × 1°) but high temporal resolution gridded net-radiation product from the Clouds and Earth’s Radiant Energy System (CERES). Our estimates agreed closely with the net-radiation estimates from the CERES. Difference between the two was less than 10 W•m−2 in 94% of the total land area. MODIS net-radiation product will be a valuable resource for the science community studying turbulent fluxes and energy budget at the Earth’s surface.en
dc.description.sponsorshipAustralian Research Council (DP0451247, DP0344744, DP0772981 and DP130101566); European Commission (Marie Curie International Outgoing Fellowship grant 300083)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationVERMA, M., FISHER, J., MALLICK, K., RYU, Y., KOBAYASHI, H., GUILLAUME, A., MOORE, G., RAMAKRISHNAN, L., HENDRIX, V., WOLF, S., SIKKA, M., KIELY, G., WOHLFAHRT, G., GIELEN, B., ROUPSARD, O., TOSCANO, P., ARAIN, A. & CESCATTI, A. 2016. Global Surface Net-Radiation at 5 km from MODIS Terra. Remote Sensing, 8 (9), 739. doi: 10.3390/rs8090739en
dc.identifier.doi10.3390/rs8090739
dc.identifier.issn2072-4292
dc.identifier.issued9en
dc.identifier.journaltitleRemote Sensingen
dc.identifier.startpage739en
dc.identifier.urihttps://hdl.handle.net/10468/3121
dc.identifier.volume8en
dc.language.isoenen
dc.publisherMDPIen
dc.relation.projectinfo:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/300083/EU/Evaluating the variability of ecosystem water vapour fluxes and spatiotemporal effects of extreme events/ECOWAX
dc.relation.projectinfo:eu-repo/grantAgreement/ARC/Discovery Projects/DP0451247/AU/Sustainable futures of Australian temperate forests: An investigation of coupled carbon, water and energy exchanges from hourly to centennial timescales/
dc.relation.projectinfo:eu-repo/grantAgreement/ARC/Discovery Projects/DP0344744/AU/Fire Scar Impacts on Surface Heat and Moisture Fluxes in Australia's Tropical Savanna and Feedbacks to Local and Regional Climate/
dc.relation.projectinfo:eu-repo/grantAgreement/ARC/Discovery Projects/DP0772981/AU/Patterns and processes of carbon and water budgets across northern Australian landscapes: From point to region/
dc.relation.projectinfo:eu-repo/grantAgreement/ARC/Discovery Projects/DP130101566/AU/Australian savannah landscapes: past, present and future/
dc.relation.urihttp://www.mdpi.com/2072-4292/8/9/739
dc.rights© 2016 by the authors; 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 (http://creativecommons.org/licenses/by/4.0/).en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectSurface net-radiationen
dc.subjectMODISen
dc.subjectFLUXNETen
dc.subjectSURFRADen
dc.subjectModelingen
dc.subjectValidationen
dc.titleGlobal surface net-radiation at 5 km from MODIS Terraen
dc.typeArticle (peer-reviewed)en
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