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Characterizing Perf...
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Zhang, ZhenUniversity of Maryland,University of the Chinese Academy of Sciences
(author)
Characterizing Performance of Freshwater Wetland Methane Models Across Time Scales at FLUXNET-CH4 Sites Using Wavelet Analyses
- Article/chapterEnglish2023
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LIBRIS-ID:oai:lup.lub.lu.se:e080e147-a8d8-49b8-987b-2276f4ddf7f1
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https://lup.lub.lu.se/record/e080e147-a8d8-49b8-987b-2276f4ddf7f1URI
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https://doi.org/10.1029/2022JG007259DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Process-based land surface models are important tools for estimating global wetland methane (CH4) emissions and projecting their behavior across space and time. So far there are no performance assessments of model responses to drivers at multiple time scales. In this study, we apply wavelet analysis to identify the dominant time scales contributing to model uncertainty in the frequency domain. We evaluate seven wetland models at 23 eddy covariance tower sites. Our study first characterizes site-level patterns of freshwater wetland CH4 fluxes (FCH4) at different time scales. A Monte Carlo approach was developed to incorporate flux observation error to avoid misidentification of the time scales that dominate model error. Our results suggest that (a) significant model-observation disagreements are mainly at multi-day time scales (<15 days); (b) most of the models can capture the CH4 variability at monthly and seasonal time scales (>32 days) for the boreal and Arctic tundra wetland sites but have significant bias in variability at seasonal time scales for temperate and tropical/subtropical sites; (c) model errors exhibit increasing power spectrum as time scale increases, indicating that biases at time scales <5 days could contribute to persistent systematic biases on longer time scales; and (d) differences in error pattern are related to model structure (e.g., proxy of CH4 production). Our evaluation suggests the need to accurately replicate FCH4 variability, especially at short time scales, in future wetland CH4 model developments.
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Bansal, SheelUnited States Geological Survey, Reston
(author)
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Chang, Kuang YuLawrence Berkeley National Laboratory
(author)
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Fluet-Chouinard, EtienneETH Zürich
(author)
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Delwiche, KyleUniversity of California, Berkeley
(author)
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Goeckede, MathiasMax Planck Institute for Biogeochemistry
(author)
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Gustafson, AdrianLund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science(Swepub:lu)ad3021gu
(author)
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Knox, SaraUniversity of British Columbia
(author)
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Leppänen, AnttiFinnish Meteorological Institute
(author)
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Liu, LichengPurdue University
(author)
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Liu, JinxunUnited States Geological Survey Western Region
(author)
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Malhotra, AvniUniversity of Zurich
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Markkanen, TiinaFinnish Meteorological Institute
(author)
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McNicol, GavinUniversity of Illinois at Chicago
(author)
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Melton, Joe R.Environment Canada
(author)
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Miller, Paul A.Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,MERGE: ModElling the Regional and Global Earth system,Institutionen för naturgeografi och ekosystemvetenskap,LTH profilområde: Aerosoler,LTH profilområden,Lunds Tekniska Högskola,LU profilområde: Naturbaserade framtidslösningar,Lunds universitets profilområden,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,LU Profile Area: Nature-based future solutions,Lund University Profile areas(Swepub:lu)nate-pum
(author)
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Peng, ChanghuiUniversity Of Quebec In Montreal
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Raivonen, MaaritFinnish Meteorological Institute
(author)
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Riley, William J.Lawrence Berkeley National Laboratory
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Sonnentag, OliverUniversity of Montreal
(author)
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Aalto, TuulaFinnish Meteorological Institute
(author)
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Vargas, RodrigoUniversity of Delaware
(author)
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Zhang, WenxinLund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,MERGE: ModElling the Regional and Global Earth system,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science(Swepub:lu)we4544zh
(author)
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Zhu, QingLawrence Berkeley National Laboratory
(author)
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Zhu, QiuanHohai University
(author)
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Zhuang, QianlaiPurdue University
(author)
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Windham-Myers, LisamarieUnited States Geological Survey Western Region
(author)
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Jackson, Robert B.Stanford University
(author)
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Poulter, BenjaminNASA Goddard Space Flight Center
(author)
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University of MarylandUniversity of the Chinese Academy of Sciences
(creator_code:org_t)
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In:Journal of Geophysical Research: Biogeosciences128:112169-8953
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Zhang, Zhen
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Bansal, Sheel
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Chang, Kuang Yu
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Fluet-Chouinard, ...
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Delwiche, Kyle
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Goeckede, Mathia ...
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show more...
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Gustafson, Adria ...
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Knox, Sara
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Leppänen, Antti
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Liu, Licheng
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Liu, Jinxun
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Malhotra, Avni
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Markkanen, Tiina
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McNicol, Gavin
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Melton, Joe R.
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Miller, Paul A.
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Peng, Changhui
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Raivonen, Maarit
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Riley, William J ...
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Sonnentag, Olive ...
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Aalto, Tuula
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Vargas, Rodrigo
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Zhang, Wenxin
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Zhu, Qing
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Zhu, Qiuan
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Zhuang, Qianlai
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Windham-Myers, L ...
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Jackson, Robert ...
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Poulter, Benjami ...
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