Estimating methane emissions from northern lakes using ice‐bubble surveys
The magnitude and variability in methane (CH 4 ) emissions from lakes are uncertain due to limitations in methods for quantifying the patchiness of ebullition (bubbling). We present a field method to estimate an important and highly uncertain source: ebullition from northern lakes. We defined four c...
Published in: | Limnology and Oceanography: Methods |
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crwiley:10.4319/lom.2010.8.0592 2024-09-15T18:41:30+00:00 Estimating methane emissions from northern lakes using ice‐bubble surveys Walter Anthony, Katey M. Vas, Dragos. A. Brosius, Laura Chapin, F. Stuart Zimov, Sergey A. Zhuang, Qianlai 2010 http://dx.doi.org/10.4319/lom.2010.8.0592 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flom.2010.8.0592 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lom.2010.8.0592 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography: Methods volume 8, issue 11, page 592-609 ISSN 1541-5856 1541-5856 journal-article 2010 crwiley https://doi.org/10.4319/lom.2010.8.0592 2024-07-18T04:27:05Z The magnitude and variability in methane (CH 4 ) emissions from lakes are uncertain due to limitations in methods for quantifying the patchiness of ebullition (bubbling). We present a field method to estimate an important and highly uncertain source: ebullition from northern lakes. We defined four classes of CH 4 bubble clusters trapped in lake ice representing distinct types of biogenic ebullition seeps that differed in flux rate. Mean annual ebullition determined through long‐term (up to 700 d) continuous flux measurements of 31 seeps in three Siberian and one Alaskan lake was (mean ± standard error, 4–10 seeps per class; g CH 4 seep −1 y −1 ): A, 6 ± 4; B, 48 ± 11; C, 354 ± 52; Hotspot, 1167 ± 177. Discrete‐seep ebullition comprised up to 87% of total emissions from Siberian lakes when diffusive flux and background and seep ebullition were considered together. Including seep ebullition increased previous estimates of lake CH 4 emissions based on traditional methods 5‐ to 8‐fold for Siberian and Alaskan lakes. Linking new ebullition estimates to an established biogeochemical model, the Terrestrial Ecosystem Model, increased previous estimates of regional terrestrial CH 4 emissions 3‐ to 7‐fold in Siberia. Assessment of the method revealed that ebullition seeps are an important component of the terrestrial CH 4 budget. They are identifiable by seep type by independent observers; they are consistent predictors of flux rate in both Siberia and Alaska; and they allow quantification of what was previously a large source of uncertainty in upscaling CH 4 emissions from lakes to regions. Article in Journal/Newspaper Alaska Siberia Wiley Online Library Limnology and Oceanography: Methods 8 11 592 609 |
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Wiley Online Library |
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English |
description |
The magnitude and variability in methane (CH 4 ) emissions from lakes are uncertain due to limitations in methods for quantifying the patchiness of ebullition (bubbling). We present a field method to estimate an important and highly uncertain source: ebullition from northern lakes. We defined four classes of CH 4 bubble clusters trapped in lake ice representing distinct types of biogenic ebullition seeps that differed in flux rate. Mean annual ebullition determined through long‐term (up to 700 d) continuous flux measurements of 31 seeps in three Siberian and one Alaskan lake was (mean ± standard error, 4–10 seeps per class; g CH 4 seep −1 y −1 ): A, 6 ± 4; B, 48 ± 11; C, 354 ± 52; Hotspot, 1167 ± 177. Discrete‐seep ebullition comprised up to 87% of total emissions from Siberian lakes when diffusive flux and background and seep ebullition were considered together. Including seep ebullition increased previous estimates of lake CH 4 emissions based on traditional methods 5‐ to 8‐fold for Siberian and Alaskan lakes. Linking new ebullition estimates to an established biogeochemical model, the Terrestrial Ecosystem Model, increased previous estimates of regional terrestrial CH 4 emissions 3‐ to 7‐fold in Siberia. Assessment of the method revealed that ebullition seeps are an important component of the terrestrial CH 4 budget. They are identifiable by seep type by independent observers; they are consistent predictors of flux rate in both Siberia and Alaska; and they allow quantification of what was previously a large source of uncertainty in upscaling CH 4 emissions from lakes to regions. |
format |
Article in Journal/Newspaper |
author |
Walter Anthony, Katey M. Vas, Dragos. A. Brosius, Laura Chapin, F. Stuart Zimov, Sergey A. Zhuang, Qianlai |
spellingShingle |
Walter Anthony, Katey M. Vas, Dragos. A. Brosius, Laura Chapin, F. Stuart Zimov, Sergey A. Zhuang, Qianlai Estimating methane emissions from northern lakes using ice‐bubble surveys |
author_facet |
Walter Anthony, Katey M. Vas, Dragos. A. Brosius, Laura Chapin, F. Stuart Zimov, Sergey A. Zhuang, Qianlai |
author_sort |
Walter Anthony, Katey M. |
title |
Estimating methane emissions from northern lakes using ice‐bubble surveys |
title_short |
Estimating methane emissions from northern lakes using ice‐bubble surveys |
title_full |
Estimating methane emissions from northern lakes using ice‐bubble surveys |
title_fullStr |
Estimating methane emissions from northern lakes using ice‐bubble surveys |
title_full_unstemmed |
Estimating methane emissions from northern lakes using ice‐bubble surveys |
title_sort |
estimating methane emissions from northern lakes using ice‐bubble surveys |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.4319/lom.2010.8.0592 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flom.2010.8.0592 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lom.2010.8.0592 |
genre |
Alaska Siberia |
genre_facet |
Alaska Siberia |
op_source |
Limnology and Oceanography: Methods volume 8, issue 11, page 592-609 ISSN 1541-5856 1541-5856 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lom.2010.8.0592 |
container_title |
Limnology and Oceanography: Methods |
container_volume |
8 |
container_issue |
11 |
container_start_page |
592 |
op_container_end_page |
609 |
_version_ |
1810485904558522368 |