FLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands

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dc.creatorDelwiche, Kyle B.
dc.creatorKnox, Sara Helen
dc.creatorMalhotra, Avni
dc.creatorFluet-Chouinard, Etienne
dc.creatorMcNicol, Gavin
dc.creatorFeron, Sarah
dc.creatorOuyang, Zutao
dc.creatorPapale, Dario
dc.creatorTrotta, Carlo
dc.creatorCanfora, Eleonora
dc.creatorCheah, You-Wei
dc.creatorChristianson, Danielle
dc.creatorAlberto, Ma.Carmelita R.
dc.creatorAlekseychik, Pavel
dc.creatorAurela, Mika
dc.creatorBaldocchi, Dennis
dc.creatorBansal, Sheel
dc.creatorBillesbach, David P.
dc.creatorBohrer, Gil
dc.creatorBracho, Rosvel
dc.creatorBuchmann, Nina
dc.creatorCampbell, David I.
dc.creatorCelis, Gerardo
dc.creatorJiquan Chen
dc.creatorWeinan Chen
dc.creatorChu, Housen
dc.creatorDalmagro, Higo J.
dc.creatorDengel, Sigrid
dc.creatorDesai, Ankur R.
dc.creatorDetto, Matteo
dc.creatorDolman, Han
dc.creatorEichelmann, Elke
dc.creatorEuskirchen, Eugénie
dc.creatorFamulari, Daniela
dc.creatorFuchs, Kathrin
dc.creatorGoeckede, Mathias
dc.creatorGogo, Sébastien
dc.creatorGondwe, Mangaliso J.
dc.creatorGoodrich, Jordan P.
dc.creatorGottschalk, Pia
dc.creatorGraham, Scott L.
dc.creatorHeimann, Martin
dc.creatorHelbig, Manuel
dc.creatorHelfter, Carole
dc.creatorHemes, Kyle S.
dc.creatorHirano, Takashi
dc.creatorHollinger, David
dc.creatorHörtnagl, Lukas
dc.creatorIwata, Hiroki
dc.creatorJacotot, Adrien
dc.creatorJurasinski, Gerald
dc.creatorKang, Minseok
dc.creatorKasak, Kuno
dc.creatorKing, John
dc.creatorKlatt, Janina
dc.creatorKoebsch, Franziska
dc.creatorKrauss, Ken W.
dc.creatorLai, Derrick Y.F.
dc.creatorLohila, Annalea
dc.creatorMammarella, Ivan
dc.creatorBelelli Marchesini, Luca
dc.creatorManca, Giovanni
dc.creatorMatthes, Jaclyn Hatala
dc.creatorMaximov, Trofim
dc.creatorMerbold, Lutz
dc.creatorMitra, Bhaskar
dc.creatorMorin, Timothy H.
dc.creatorNemitz, Eiko
dc.creatorNilsson, Mats B.
dc.creatorNiu, Shuli
dc.creatorOechel, Walter C.
dc.creatorOikawa, Patricia Y.
dc.creatorOno, Keisuke
dc.creatorPeichl, Matthias
dc.creatorPeltola, Olli
dc.creatorReba, Michele L.
dc.creatorRichardson, Andrew D.
dc.creatorRiley, William
dc.creatorRunkle, Benjamin R.K.
dc.creatorRyu, Youngryel
dc.creatorSachs, Torsten
dc.creatorSakabe, Ayaka
dc.creatorSanchez, Camilo Rey
dc.creatorSchuur, Edward A.G.
dc.creatorSchäfer, Karina V.R.
dc.creatorSonnentag, Oliver
dc.creatorSparks, Jed P.
dc.creatorStuart-Haëntjens, Ellen
dc.creatorSturtevant, Cove
dc.creatorSullivan, Ryan C.
dc.creatorSzutu, Daphne J.
dc.creatorThom, Jonathan E.
dc.creatorTorn, Margaret S.
dc.creatorTuittila, Eeva-Stiina
dc.creatorTurner, Jessica
dc.creatorUeyama, Masahito
dc.creatorValach, Alex C.
dc.creatorVargas, Rodrigo
dc.creatorVarlagin, Andrej
dc.creatorVazquez-Lule, Alma
dc.creatorVerfaillie, Joseph G.
dc.creatorVesala, Timo
dc.creatorVourlitis, George L.
dc.creatorWard, Eric J.
dc.creatorWille, Christian
dc.creatorWohlfahrt, Georg
dc.creatorWong, Guan Xhuan
dc.creatorZhang, Zhen
dc.creatorZona, Donatella
dc.creatorWindham-Myers, Lisamarie
dc.creatorPoulter, Benjamin
dc.creatorJackson, Robert B.
dc.date2021-07-29
dc.date2023-03-10T14:33:18Z
dc.date2023-03-10T14:33:18Z
dc.date.accessioned2026-06-27T04:16:18Z
dc.descriptionAbstract. Methane (CH4) emissions from natural landscapes constitute roughly half of global CH4 contributions to the atmosphere, yet large uncertainties remain in the absolute magnitude and the seasonality of emission quantities and drivers. Eddy covariance (EC) measurements of CH4 flux are ideal for constraining ecosystem-scale CH4 emissions due to quasi-continuous and high-temporal-resolution CH4 flux measurements, coincident carbon dioxide, water, and energy flux measurements, lack of ecosystem disturbance, and increased availability of datasets over the last decade. Here, we (1) describe the newly published dataset, FLUXNET-CH4 Version 1.0, the first open-source global dataset of CH4 EC measurements (available at https://fluxnet.org/data/fluxnet-ch4-community-product/, last access: 7 April 2021). FLUXNET-CH4 includes half-hourly and daily gap-filled and non-gap-filled aggregated CH4 fluxes and meteorological data from 79 sites globally: 42 freshwater wetlands, 6 brackish and saline wetlands, 7 formerly drained ecosystems, 7 rice paddy sites, 2 lakes, and 15 uplands. Then, we (2) evaluate FLUXNET-CH4 representativeness for freshwater wetland coverage globally because the majority of sites in FLUXNET-CH4 Version 1.0 are freshwater wetlands which are a substantial source of total atmospheric CH4 emissions; and (3) we provide the first global estimates of the seasonal variability and seasonality predictors of freshwater wetland CH4 fluxes. Our representativeness analysis suggests that the freshwater wetland sites in the dataset cover global wetland bioclimatic attributes (encompassing energy, moisture, and vegetation-related parameters) in arctic, boreal, and temperate regions but only sparsely cover humid tropical regions. Seasonality metrics of wetland CH4 emissions vary considerably across latitudinal bands. In freshwater wetlands (except those between 20∘ S to 20∘ N) the spring onset of elevated CH4 emissions starts 3 d earlier, and the CH4 emission season lasts 4 d longer, for each degree Celsius increase in mean annual air temperature. On average, the spring onset of increasing CH4 emissions lags behind soil warming by 1 month, with very few sites experiencing increased CH4 emissions prior to the onset of soil warming. In contrast, roughly half of these sites experience the spring onset of rising CH4 emissions prior to the spring increase in gross primary productivity (GPP). The timing of peak summer CH4 emissions does not correlate with the timing for either peak summer temperature or peak GPP. Our results provide seasonality parameters for CH4 modeling and highlight seasonality metrics that cannot be predicted by temperature or GPP (i.e., seasonality of CH4 peak). FLUXNET-CH4 is a powerful new resource for diagnosing and understanding the role of terrestrial ecosystems and climate drivers in the global CH4 cycle, and future additions of sites in tropical ecosystems and site years of data collection will provide added value to this database. All seasonality parameters are available at https://doi.org/10.5281/zenodo.4672601 (Delwiche et al., 2021). Additionally, raw FLUXNET-CH4 data used to extract seasonality parameters can be downloaded from https://fluxnet.org/data/fluxnet-ch4-community-product/ (last access: 7 April 2021), and a complete list of the 79 individual site data DOIs is provided in Table 2 of this paper.
dc.identifierhttps://hdl.handle.net/10568/129326
dc.identifier.urihttp://hdl.handle.net/123456789/27245
dc.languageen
dc.publisherCopernicus GmbH
dc.rightsOpen Access
dc.sourceDelwiche, Kyle B.; Knox, Sara Helen; Malhotra, Avni; Fluet-Chouinard, Etienne; McNicol, Gavin; Feron, Sarah; Ouyang, Zutao; Papale, Dario; Trotta, Carlo; Canfora, Eleonora; Cheah, You-Wei; Christianson, Danielle; Alberto, Ma.Carmelita R.; Alekseychik, Pavel; Aurela, Mika; Baldocchi, Dennis; Bansal, Sheel; Billesbach, David P.; Bohrer, Gil; Bracho, Rosvel; Buchmann, Nina; Campbell, David I.; Celis, Gerardo; Chen, Jiquan; Chen, Weinan; Chu, Housen; Dalmagro, Higo J.; Dengel, Sigrid; Desai, Ankur R.; Detto, Matteo; Dolman, Han; Eichelmann, Elke; Euskirchen, Eugénie; Famulari, Daniela; Fuchs, Kathrin; Goeckede, Mathias; Gogo, Sébastien; Gondwe, Mangaliso J.; Goodrich, Jordan P.; Gottschalk, Pia; Graham, Scott L.; Heimann, Martin; Helbig, Manuel; Helfter, Carole; Hemes, Kyle S.; Hirano, Takashi; Hollinger, David; Hörtnagl, Lukas; Iwata, Hiroki; Jacotot, Adrien; Jurasinski, Gerald; Kang, Minseok; Kasak, Kuno; King, John; Klatt, Janina; Koebsch, Franziska; Krauss, Ken W.; Lai, Derrick Y.F.; Lohila, Annalea; Mammarella, Ivan; Belelli Marchesini, Luca; Manca, Giovanni; Matthes, Jaclyn Hatala; Maximov, Trofim; Merbold, Lutz; Mitra, Bhaskar; Morin, Timothy H.; Nemitz, Eiko; Nilsson, Mats B.; Niu, Shuli; Oechel, Walter C.; Oikawa, Patricia Y.; Ono, Keisuke; Peichl, Matthias; Peltola, Olli; Reba, Michele L.; Richardson, Andrew D.; Riley, William; Runkle, Benjamin R.K.; Ryu, Youngryel; Sachs, Torsten; Sakabe, Ayaka; Sanchez, Camilo Rey; Schuur, Edward A.G.; Schäfer, Karina V.R.; Sonnentag, Oliver; Sparks, Jed P.; Stuart-Haí«ntjens, Ellen; Sturtevant, Cove; Sullivan, Ryan C.; Szutu, Daphne J.; Thom, Jonathan E.; Torn, Margaret S.; Tuittila, Eeva-Stiina; Turner, Jessica; Ueyama, Masahito; Valach, Alex C.; Vargas, Rodrigo; Varlagin, Andrej; Vazquez-Lule, Alma; Verfaillie, Joseph G.; Vesala, Timo; Vourlitis, George L.; Ward, Eric J.; Wille, Christian; Wohlfahrt, Georg; Wong, Guan Xhuan; Zhang, Zhen; Zona, Donatella; Windham-Myers, Lisamarie; Poulter, Benjamin; Jackson, Robert B. 2021. FLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands. Earth System Science Data 13: 3607-3689
dc.subjectwetlands
dc.subjectanalysis
dc.subjectmethane
dc.subjectfreshwater
dc.subjectseasonality
dc.titleFLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)