Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Modeled Microbial Dynamics Explain the Apparent Temperature Sensitivity of Wetland Methane Emissions

Chadburn, S. E., Aalto, T., Aurela, M., Baldocchi, D., Biasi, C., Boike, J., Burke, E. J., Comyn‐Platt, E., Dolman, A. J., Duran‐Rojas, C., Fan, Y., Friborg, T., Gao, Y., Gedney, N., Göckede, M., Hayman, G. D., Holl, D., Hugelius, G., Kutzbach, L., Lee, H., Lohila, A., Parmentier, F. W., Sachs, T., Shurpali, N. J., Westermann, S. (2020): Modeled Microbial Dynamics Explain the Apparent Temperature Sensitivity of Wetland Methane Emissions. - Global Biogeochemical Cycles, 34, 11, e2020GB006678.
https://doi.org/10.1029/2020GB006678

Item is

Dateien

einblenden: Dateien
ausblenden: Dateien
:
5004026.pdf (Verlagsversion), 5MB
Name:
5004026.pdf
Beschreibung:
-
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
CC BY 4.0

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Chadburn, Sarah E.1, Autor
Aalto, Tuula1, Autor
Aurela, Mika1, Autor
Baldocchi, Dennis1, Autor
Biasi, Christina1, Autor
Boike, Julia1, Autor
Burke, Eleanor J.1, Autor
Comyn‐Platt, Edward1, Autor
Dolman, A. Johannes1, Autor
Duran‐Rojas, Carolina1, Autor
Fan, Yuanchao1, Autor
Friborg, Thomas1, Autor
Gao, Yao1, Autor
Gedney, Nicola1, Autor
Göckede, Mathias1, Autor
Hayman, Garry D.1, Autor
Holl, David1, Autor
Hugelius, Gustaf1, Autor
Kutzbach, Lars1, Autor
Lee, Hanna1, Autor
Lohila, Annalea1, AutorParmentier, Frans‐Jan W.1, AutorSachs, T.2, Autor              Shurpali, Narasinha J.1, AutorWestermann, Sebastian1, Autor mehr..
Affiliations:
1External Organizations, ou_persistent22              
21.4 Remote Sensing, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146028              

Inhalt

einblenden:
ausblenden:
Schlagwörter: methane, wetland methane, microbial modeling, global modeling, methanogens
 Zusammenfassung: Methane emissions from natural wetlands tend to increase with temperature and therefore may lead to a positive feedback under future climate change. However, their temperature response includes confounding factors and appears to differ on different time scales. Observed methane emissions depend strongly on temperature on a seasonal basis, but if the annual mean emissions are compared between sites, there is only a small temperature effect. We hypothesize that microbial dynamics are a major driver of the seasonal cycle and that they can explain this apparent discrepancy. We introduce a relatively simple model of methanogenic growth and dormancy into a wetland methane scheme that is used in an Earth system model. We show that this addition is sufficient to reproduce the observed seasonal dynamics of methane emissions in fully saturated wetland sites, at the same time as reproducing the annual mean emissions. We find that a more complex scheme used in recent Earth system models does not add predictive power. The sites used span a range of climatic conditions, with the majority in high latitudes. The difference in apparent temperature sensitivity seasonally versus spatially cannot be recreated by the non‐microbial schemes tested. We therefore conclude that microbial dynamics are a strong candidate to be driving the seasonal cycle of wetland methane emissions. We quantify longer‐term temperature sensitivity using this scheme and show that it gives approximately a 12% increase in emissions per degree of warming globally. This is in addition to any hydrological changes, which could also impact future methane emissions.

Details

einblenden:
ausblenden:
Sprache(n): eng - Englisch
 Datum: 2020-11-182020
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1029/2020GB006678
GFZPOF: p3 PT3 Earth Surface and Climate Interactions
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Global Biogeochemical Cycles
Genre der Quelle: Zeitschrift, SCI, Scopus
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 34 (11) Artikelnummer: e2020GB006678 Start- / Endseite: - Identifikator: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals191