Database Maintenance, Data Sharing Policy, Collaboration

Papale, Dario; Agarwal, Deborah; Baldocchi, Dennis; Cook, Robert B.; Fisher, Joshua B.; Ingen, Catharine van

doi:10.1007/978-94-007-2351-1_17

Cited by 19 publications

(17 citation statements)

References 14 publications

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“…Databases, like FLUXNET (http://www.fluxdata.org), contain over 1000 site years of data, representing more than 8 million hours of flux measurements (Stoy et al, 2013); this database is expected to double in size with a new release of data being processed as this article is being written. So operating at the terabyte to petabyte scales requires coordinated use of distributed data exchange systems to submit, ingest, store, vet, track version and provenance, manipulate, distribute, and discover data (Agarwal et al, 2010;Papale et al, 2012). So operating at the terabyte to petabyte scales requires coordinated use of distributed data exchange systems to submit, ingest, store, vet, track version and provenance, manipulate, distribute, and discover data (Agarwal et al, 2010;Papale et al, 2012).…”

Section: Where Is the Field Going?mentioning

confidence: 99%

Measuring fluxes of trace gases and energy between ecosystems and the atmosphere – the state and future of the eddy covariance method

Baldocchi

2014

Global Change Biology

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453

302

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The application of the eddy covariance flux method to measure fluxes of trace gas and energy between ecosystems and the atmosphere has exploded over the past 25 years. This opinion paper provides a perspective on the contributions and future opportunities of the eddy covariance method. First, the paper discusses the pros and cons of this method relative to other methods used to measure the exchange of trace gases between ecosystems and the atmosphere. Second, it discusses how the use of eddy covariance method has grown and evolved. Today, more than 400 flux measurement sites are operating world-wide and the duration of the time series exceed a decade at dozens of sites. Networks of tower sites now enable scientists to ask scientific questions related to climatic and ecological gradients, disturbance, changes in land use, and management. The paper ends with discussions on where the field of flux measurement is heading. Topics discussed include role of open access data sharing and data mining, in this new era of big data, and opportunities new sensors that measure a variety of trace gases, like volatile organic carbon compounds, methane and nitrous oxide, and aerosols, may yield.

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Section: Where Is the Field Going?mentioning

confidence: 99%

Measuring fluxes of trace gases and energy between ecosystems and the atmosphere – the state and future of the eddy covariance method

Baldocchi

2014

Global Change Biology

Self Cite

453

302

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“…The flux tower data used in this work are a composite of daily values from the FLUXNET 2015 tier 1 (FN) and LaThuile 2007 (LT) free fair use databases Baldocchi et al, 2001;Papale et al, 2012;FluxData, 2016). We applied quality control and filtering to the site data as follows:…”

Section: Flux Tower Datamentioning

confidence: 99%

Derived Optimal Linear Combination Evapotranspiration (DOLCE): a global gridded synthesis ET estimate

Hobeichi¹,

Abramowitz²,

Evans³

et al. 2018

Hydrol. Earth Syst. Sci.

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Abstract. Accurate global gridded estimates of evapotranspiration (ET) are key to understanding water and energy budgets, in addition to being required for model evaluation. Several gridded ET products have already been developed which differ in their data requirements, the approaches used to derive them and their estimates, yet it is not clear which provides the most reliable estimates. This paper presents a new global ET dataset and associated uncertainty with monthly temporal resolution for 2000-2009. Six existing gridded ET products are combined using a weighting approach trained by observational datasets from 159 FLUXNET sites. The weighting method is based on a technique that provides an analytically optimal linear combination of ET products compared to site data and accounts for both the performance differences and error covariance between the participating ET products. We examine the performance of the weighting approach in several in-sample and out-of-sample tests that confirm that point-based estimates of flux towers provide information on the grid scale of these products. We also provide evidence that the weighted product performs better than its six constituent ET product members in four common metrics. Uncertainty in the ET estimate is derived by rescaling the spread of participating ET products so that their spread reflects the ability of the weighted mean estimate to match flux tower data. While issues in observational data and any common biases in participating ET datasets are limitations to the success of this approach, future datasets can easily be incorporated and enhance the derived product.

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“…Standard meteorological measurements are collected as at most stations. The most comprehensive compilation of these flux-tower measurements is available from the "La Thuile 2007" database (Papale et al, 2012).…”

Section: Fluxnet Datamentioning

confidence: 99%

High-resolution land surface fluxes from satellite and reanalysis data (HOLAPS v1.0): evaluation and uncertainty assessment

2016

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Abstract. Surface water and energy fluxes are essential components of the Earth system. Surface latent heat fluxes provide major energy input to the atmosphere. Despite the importance of these fluxes, state-of-the-art data sets of surface energy and water fluxes largely differ. The present paper introduces a new framework for the estimation of surface energy and water fluxes at the land surface, which allows for temporally and spatially high-resolved flux estimates at the quasi-global scale (50 • S, 50 • N) (High resOlution Land Atmosphere Parameters from Space -HO-LAPS v1.0). The framework makes use of existing long-term satellite and reanalysis data records and ensures internally consistent estimates of the surface radiation and water fluxes. The manuscript introduces the technical details of the developed framework and provides results of a comprehensive sensitivity and evaluation study. Overall the root mean square difference (RMSD) was found to be 51.2 (30.7) W m −2 for hourly (daily) latent heat flux, and 84 (38) W m −2 for sensible heat flux when compared against 48 FLUXNET stations worldwide. The largest uncertainties of latent heat flux and net radiation were found to result from uncertainties in the solar radiation flux obtained from satellite data products.

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Database Maintenance, Data Sharing Policy, Collaboration

Cited by 19 publications

References 14 publications

Measuring fluxes of trace gases and energy between ecosystems and the atmosphere – the state and future of the eddy covariance method

Measuring fluxes of trace gases and energy between ecosystems and the atmosphere – the state and future of the eddy covariance method

Derived Optimal Linear Combination Evapotranspiration (DOLCE): a global gridded synthesis ET estimate

High-resolution land surface fluxes from satellite and reanalysis data (HOLAPS v1.0): evaluation and uncertainty assessment

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