Quantifying Spatial Heterogeneities of Surface Heat Budget and Methane Emissions over West-Siberian Peatland: Highlights from the Mukhrino 2022 Campaign
The study presents the first results from the multi-platform observational campaign carried out at the Mukhrino peatland in June 2022. The focus of the study is the quantification of spatial contrasts of the surface heat budget terms and methane emissions across the peatland, which arise due to the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/15/1/102 |
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| author | Dmitry G. Chechin Irina A. Repina Arseniy Yu. Artamonov Ilya D. Drozd Egor A. Dyukarev Vladimir S. Kazantsev Liudmila A. Krivenok Arina V. Larina Artem D. Pashkin Kirill N. Shmonin Victor M. Stepanenko Mikhail I. Varentsov |
| author_facet | Dmitry G. Chechin Irina A. Repina Arseniy Yu. Artamonov Ilya D. Drozd Egor A. Dyukarev Vladimir S. Kazantsev Liudmila A. Krivenok Arina V. Larina Artem D. Pashkin Kirill N. Shmonin Victor M. Stepanenko Mikhail I. Varentsov |
| author_sort | Dmitry G. Chechin |
| collection | DOAJ |
| description | The study presents the first results from the multi-platform observational campaign carried out at the Mukhrino peatland in June 2022. The focus of the study is the quantification of spatial contrasts of the surface heat budget terms and methane emissions across the peatland, which arise due to the presence of microlandscape heterogeneities. It is found that surface temperature contrasts across the peatland exceeded 10 °C for clear-sky conditions both during day and night. Diurnal variation of surface temperature was strongest over ridges and drier hollows and was smallest over the waterlogged hollows and shallow lakes. This resulted in strong spatial variations of sensible heat flux (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>H</mi></mrow></semantics></math></inline-formula>) and Bowen ratio, while the latent heat varied much less. During the clear-sky days, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>H</mi></mrow></semantics></math></inline-formula> over ryam exceeded the one over the waterlogged hollow by more than a factor of two. The Bowen ratio amounted to about unity over ryam, which is similar to values over forests. Methane emissions estimated using the static-chamber method also strongly varied between various microlandscapes, being largest at a hollow within a ridge-hollow complex and smallest at a ridge. A strong nocturnal increase in methane mixing ratio was observed and was used in the framework of the atmospheric boundary layer budget method to estimate nocturnal methane emissions, which were found to be in the same order of magnitude as daytime emissions. Finally, the directions for further research are outlined, including the verification of flux-aggregation techniques, parameterizations of surface roughness and turbulent exchange, and land-surface model evaluation and development. |
| first_indexed | 2024-03-08T10:56:17Z |
| format | Article |
| id | doaj.art-6e43ced6c53149f085199f78182d1b18 |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-08T10:56:17Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-6e43ced6c53149f085199f78182d1b182024-01-26T16:32:42ZengMDPI AGForests1999-49072024-01-0115110210.3390/f15010102Quantifying Spatial Heterogeneities of Surface Heat Budget and Methane Emissions over West-Siberian Peatland: Highlights from the Mukhrino 2022 CampaignDmitry G. Chechin0Irina A. Repina1Arseniy Yu. Artamonov2Ilya D. Drozd3Egor A. Dyukarev4Vladimir S. Kazantsev5Liudmila A. Krivenok6Arina V. Larina7Artem D. Pashkin8Kirill N. Shmonin9Victor M. Stepanenko10Mikhail I. Varentsov11A.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaResearch Computing Center, Lomonosov Moscow State University, 119991 Moscow, RussiaA.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, 119017 Moscow, RussiaThe study presents the first results from the multi-platform observational campaign carried out at the Mukhrino peatland in June 2022. The focus of the study is the quantification of spatial contrasts of the surface heat budget terms and methane emissions across the peatland, which arise due to the presence of microlandscape heterogeneities. It is found that surface temperature contrasts across the peatland exceeded 10 °C for clear-sky conditions both during day and night. Diurnal variation of surface temperature was strongest over ridges and drier hollows and was smallest over the waterlogged hollows and shallow lakes. This resulted in strong spatial variations of sensible heat flux (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>H</mi></mrow></semantics></math></inline-formula>) and Bowen ratio, while the latent heat varied much less. During the clear-sky days, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>H</mi></mrow></semantics></math></inline-formula> over ryam exceeded the one over the waterlogged hollow by more than a factor of two. The Bowen ratio amounted to about unity over ryam, which is similar to values over forests. Methane emissions estimated using the static-chamber method also strongly varied between various microlandscapes, being largest at a hollow within a ridge-hollow complex and smallest at a ridge. A strong nocturnal increase in methane mixing ratio was observed and was used in the framework of the atmospheric boundary layer budget method to estimate nocturnal methane emissions, which were found to be in the same order of magnitude as daytime emissions. Finally, the directions for further research are outlined, including the verification of flux-aggregation techniques, parameterizations of surface roughness and turbulent exchange, and land-surface model evaluation and development.https://www.mdpi.com/1999-4907/15/1/102peatlandscarbon cyclemethane emissionssurface heat budgetatmospheric boundary layer |
| spellingShingle | Dmitry G. Chechin Irina A. Repina Arseniy Yu. Artamonov Ilya D. Drozd Egor A. Dyukarev Vladimir S. Kazantsev Liudmila A. Krivenok Arina V. Larina Artem D. Pashkin Kirill N. Shmonin Victor M. Stepanenko Mikhail I. Varentsov Quantifying Spatial Heterogeneities of Surface Heat Budget and Methane Emissions over West-Siberian Peatland: Highlights from the Mukhrino 2022 Campaign Forests peatlands carbon cycle methane emissions surface heat budget atmospheric boundary layer |
| title | Quantifying Spatial Heterogeneities of Surface Heat Budget and Methane Emissions over West-Siberian Peatland: Highlights from the Mukhrino 2022 Campaign |
| title_full | Quantifying Spatial Heterogeneities of Surface Heat Budget and Methane Emissions over West-Siberian Peatland: Highlights from the Mukhrino 2022 Campaign |
| title_fullStr | Quantifying Spatial Heterogeneities of Surface Heat Budget and Methane Emissions over West-Siberian Peatland: Highlights from the Mukhrino 2022 Campaign |
| title_full_unstemmed | Quantifying Spatial Heterogeneities of Surface Heat Budget and Methane Emissions over West-Siberian Peatland: Highlights from the Mukhrino 2022 Campaign |
| title_short | Quantifying Spatial Heterogeneities of Surface Heat Budget and Methane Emissions over West-Siberian Peatland: Highlights from the Mukhrino 2022 Campaign |
| title_sort | quantifying spatial heterogeneities of surface heat budget and methane emissions over west siberian peatland highlights from the mukhrino 2022 campaign |
| topic | peatlands carbon cycle methane emissions surface heat budget atmospheric boundary layer |
| url | https://www.mdpi.com/1999-4907/15/1/102 |
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