FLUXNET-CH4: a global, multi-ecosystem datasetand analysis of methane seasonalityfrom freshwater wetlands - Archive ouverte HAL Access content directly
Journal Articles Earth System Science Data Year : 2021

FLUXNET-CH4: a global, multi-ecosystem datasetand analysis of methane seasonalityfrom freshwater wetlands

, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , (1, 2) , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
1
2
Sara Helen Knox
  • Function : Author
Ma Carmelita R Alberto
  • Function : Author
Jaclyn Hatala Matthes
  • Function : Author
Camilo Rey Sanchez
  • Function : Author
Guan Xhuan Wong
  • Function : Author
Kyle B Delwiche
  • Function : Author
Sara Helen Knox
  • Function : Author
Avni Malhotra
  • Function : Author
Etienne Fluet-Chouinard
  • Function : Author
Gavin Mcnicol
  • Function : Author
Sarah Feron
  • Function : Author
Zutao Ouyang
  • Function : Author
Dario Papale
Carlo Trotta
  • Function : Author
Eleonora Canfora
  • Function : Author
You-Wei Cheah
  • Function : Author
Danielle Christianson
  • Function : Author
Ma. Carmelita R. Alberto
  • Function : Author
Pavel Alekseychik
  • Function : Author
Mika Aurela
Dennis Baldocchi
Sheel Bansal
  • Function : Author
David P Billesbach
  • Function : Author
Gil Bohrer
  • Function : Author
Rosvel Bracho
  • Function : Author
Nina Buchmann
David I Campbell
  • Function : Author
Gerardo Celis
  • Function : Author
Jiquan Chen
Weinan Chen
  • Function : Author
Housen Chu
Higo J Dalmagro
  • Function : Author
Sigrid Dengel
  • Function : Author
Ankur R Desai
  • Function : Author
Matteo Detto
  • Function : Author
Han Dolman
  • Function : Author
Elke Eichelmann
  • Function : Author
Eugenie Euskirchen
Daniela Famulari
  • Function : Author
Kathrin Fuchs
  • Function : Author
Mathias Goeckede
  • Function : Author
Mangaliso J Gondwe
  • Function : Author
Jordan P Goodrich
  • Function : Author
Pia Gottschalk
  • Function : Author
Scott L Graham
  • Function : Author
Martin Heimann
  • Function : Author
Manuel Helbig
  • Function : Author
Carole Helfter
  • Function : Author
Kyle S Hemes
  • Function : Author
Takashi Hirano
  • Function : Author
David Hollinger
  • Function : Author
Lukas Hörtnagl
  • Function : Author
Hiroki Iwata
  • Function : Author
Adrien Jacotot
Gerald Jurasinski
  • Function : Author
Minseok Kang
  • Function : Author
Kuno Kasak
  • Function : Author
John King
  • Function : Author
Janina Klatt
  • Function : Author
Franziska Koebsch
  • Function : Author
Ken W Krauss
  • Function : Author
Derrick y F Lai
  • Function : Author
Annalea Lohila
Ivan Mammarella
Luca Belelli Marchesini
  • Function : Author
Giovanni Manca
  • Function : Author
Jaclyn Hatala Matthes
  • Function : Author
Trofim Maximov
  • Function : Author
Lutz Merbold
Bhaskar Mitra
  • Function : Author
Timothy H Morin
  • Function : Author
Eiko Nemitz
  • Function : Author
Mats B Nilsson
Shuli Niu
  • Function : Author
Walter C Oechel
  • Function : Author
Patricia y Oikawa
  • Function : Author
Keisuke Ono
  • Function : Author
Matthias Peichl
Olli Peltola
  • Function : Author
Michele L Reba
  • Function : Author
Andrew D Richardson
  • Function : Author
William Riley
  • Function : Author
Benjamin R K Runkle
  • Function : Author
Youngryel Ryu
Torsten Sachs
Ayaka Sakabe
  • Function : Author
Camilo Rey Sanchez
  • Function : Author
Edward A Schuur
  • Function : Author
Karina V R Schäfer
  • Function : Author
Oliver Sonnentag
  • Function : Author
Jed P Sparks
  • Function : Author
Ellen Stuart-Haëntjens
  • Function : Author
Cove Sturtevant
  • Function : Author
Ryan C Sullivan
  • Function : Author
Daphne J Szutu
  • Function : Author
Jonathan E Thom
  • Function : Author
Margaret S Torn
  • Function : Author
Eeva-Stiina Tuittila
  • Function : Author
Jessica Turner
  • Function : Author
Masahito Ueyama
  • Function : Author
Alex C Valach
  • Function : Author
Rodrigo Vargas
  • Function : Author
Andrej Varlagin
Alma Vazquez-Lule
  • Function : Author
Joseph G Verfaillie
  • Function : Author
Timo Vesala
  • Function : Author
George L Vourlitis
  • Function : Author
Eric J Ward
  • Function : Author
Christian Wille
  • Function : Author
Georg Wohlfahrt
Guan Xhuan Wong
  • Function : Author
Zhen Zhang
Donatella Zona
  • Function : Author
Lisamarie Windham-Myers
  • Function : Author
Benjamin Poulter
Robert B Jackson
  • Function : Author

Abstract

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∘ 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.
Fichier principal
Vignette du fichier
essd-13-3607-2021.pdf (4.3 Mo) Télécharger le fichier
Origin : Publication funded by an institution

Dates and versions

insu-03335685 , version 1 (06-09-2021)

Licence

Attribution - CC BY 4.0

Identifiers

Cite

Sara Helen Knox, Ma Carmelita R Alberto, Jaclyn Hatala Matthes, Camilo Rey Sanchez, Guan Xhuan Wong, et al.. FLUXNET-CH4: a global, multi-ecosystem datasetand analysis of methane seasonalityfrom freshwater wetlands. Earth System Science Data, 2021, 13 (7), pp.3607-3689. ⟨10.5194/essd-13-3607-2021⟩. ⟨insu-03335685⟩
265 View
66 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More