Home About Browse Search
Svenska


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

Delwiche, Kyle B. and Knox, Sara Helen and Malhotra, Avni and Fluet-Chouinard, Etienne and McNicol, Gavin and Feron, Sarah and Ouyang, Zutao and Papale, Dario and Trotta, Carlo and Canfora, Eleonora and Cheah, You-Wei and Christianson, Danielle and Alberto, Ma Carmelita R. and Alekseychik, Pavel and Aurela, Mika and Baldocchi, Dennis and Bansal, Sheel and Billesbach, David P. and Bohrer, Gil and Bracho, Rosvel and Buchmann, Nina and Campbell, David I. and Celis, Gerardo and Chen, Jiquan and Chen, Weinan and Chu, Housen and Dalmagro, Higo J. and Dengel, Sigrid and Desai, Ankur R. and Detto, Matteo and Dolman, Han and Eichelmann, Elke and Euskirchen, Eugenie and Famulari, Daniela and Fuchs, Kathrin and Goeckede, Mathias and Gogo, Sebastien and Gondwe, Mangaliso J. and Goodrich, Jordan P. and Gottschalk, Pia and Graham, Scott L. and Heimann, Martin and Helbig, Manuel and Helfter, Carole and Hemes, Kyle S. and Hirano, Takashi and Hollinger, David and Hortnagl, Lukas and Iwata, Hiroki and Jacotot, Adrien and Jurasinski, Gerald and Kang, Minseok and Kasak, Kuno and King, John and Klatt, Janina and Koebsch, Franziska and Krauss, Ken W. and Lai, Derrick Y. F. and Lohila, Annalea and Mammarella, Ivan and Marchesini, Luca Belelli and Manca, Giovanni and Matthes, Jaclyn Hatala and Maximov, Trofim and Merbold, Lutz and Mitra, Bhaskar and Morin, Timothy H. and Nemitz, Eiko and Nilsson, Mats and Niu, Shuli and Oechel, Walter C. and Oikawa, Patricia Y. and Ono, Keisuke and Peichl, Matthias and Peltola, Olli and Reba, Michele L. and Richardson, Andrew D. and Riley, William and Runkle, Benjamin R. K. and Ryu, Youngryel and Sachs, Torsten and Sakabe, Ayaka and Sanchez, Camilo Rey and Schuur, Edward A. and Schäfer, Karina V. R. and Sonnentag, Oliver and Sparks, Jed P. and Stuart-Haentjens, Ellen and Sturtevant, Cove and Sullivan, Ryan C. and Szutu, Daphne J. and Thom, Jonathan E. and Torn, Margaret S. and Tuittila, Eeva-Stiina and Turner, Jessica and Ueyama, Masahito and Valach, Alex C. and Vargas, Rodrigo and Varlagin, Andrej and Vazquez-Lule, Alma and Verfaillie, Joseph G. and Vesala, Timo and Vourlitis, George L. and Ward, Eric J. and Wille, Christian and Wohlfahrt, Georg and Wong, Guan Xhuan and Zhang, Zhen and Zona, Donatella and Windham-Myers, Lisamarie and Poulter, Benjamin and 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
[Research article]

[img] PDF
4MB

Abstract

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 degrees S to 20 degrees 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.

Authors/Creators:Delwiche, Kyle B. and Knox, Sara Helen and Malhotra, Avni and Fluet-Chouinard, Etienne and McNicol, Gavin and Feron, Sarah and Ouyang, Zutao and Papale, Dario and Trotta, Carlo and Canfora, Eleonora and Cheah, You-Wei and Christianson, Danielle and Alberto, Ma Carmelita R. and Alekseychik, Pavel and Aurela, Mika and Baldocchi, Dennis and Bansal, Sheel and Billesbach, David P. and Bohrer, Gil and Bracho, Rosvel and Buchmann, Nina and Campbell, David I. and Celis, Gerardo and Chen, Jiquan and Chen, Weinan and Chu, Housen and Dalmagro, Higo J. and Dengel, Sigrid and Desai, Ankur R. and Detto, Matteo and Dolman, Han and Eichelmann, Elke and Euskirchen, Eugenie and Famulari, Daniela and Fuchs, Kathrin and Goeckede, Mathias and Gogo, Sebastien and Gondwe, Mangaliso J. and Goodrich, Jordan P. and Gottschalk, Pia and Graham, Scott L. and Heimann, Martin and Helbig, Manuel and Helfter, Carole and Hemes, Kyle S. and Hirano, Takashi and Hollinger, David and Hortnagl, Lukas and Iwata, Hiroki and Jacotot, Adrien and Jurasinski, Gerald and Kang, Minseok and Kasak, Kuno and King, John and Klatt, Janina and Koebsch, Franziska and Krauss, Ken W. and Lai, Derrick Y. F. and Lohila, Annalea and Mammarella, Ivan and Marchesini, Luca Belelli and Manca, Giovanni and Matthes, Jaclyn Hatala and Maximov, Trofim and Merbold, Lutz and Mitra, Bhaskar and Morin, Timothy H. and Nemitz, Eiko and Nilsson, Mats and Niu, Shuli and Oechel, Walter C. and Oikawa, Patricia Y. and Ono, Keisuke and Peichl, Matthias and Peltola, Olli and Reba, Michele L. and Richardson, Andrew D. and Riley, William and Runkle, Benjamin R. K. and Ryu, Youngryel and Sachs, Torsten and Sakabe, Ayaka and Sanchez, Camilo Rey and Schuur, Edward A. and Schäfer, Karina V. R. and Sonnentag, Oliver and Sparks, Jed P. and Stuart-Haentjens, Ellen and Sturtevant, Cove and Sullivan, Ryan C. and Szutu, Daphne J. and Thom, Jonathan E. and Torn, Margaret S. and Tuittila, Eeva-Stiina and Turner, Jessica and Ueyama, Masahito and Valach, Alex C. and Vargas, Rodrigo and Varlagin, Andrej and Vazquez-Lule, Alma and Verfaillie, Joseph G. and Vesala, Timo and Vourlitis, George L. and Ward, Eric J. and Wille, Christian and Wohlfahrt, Georg and Wong, Guan Xhuan and Zhang, Zhen and Zona, Donatella and Windham-Myers, Lisamarie and Poulter, Benjamin and Jackson, Robert B.
Title:FLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands
Series Name/Journal:Earth System Science Data
Year of publishing :2021
Volume:13
Page range:3607-3689
Number of Pages:83
Publisher:COPERNICUS GESELLSCHAFT MBH
ISSN:1866-3508
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Physical Geography
URN:NBN:urn:nbn:se:slu:epsilon-p-113426
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113426
Additional ID:
Type of IDID
DOI10.5194/essd-13-3607-2021
Web of Science (WoS)000679888800004
ID Code:25476
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Ecology and Management
Deposited By: SLUpub Connector
Deposited On:21 Sep 2021 10:25
Metadata Last Modified:21 Sep 2021 10:31

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits