Investigating Alaskan Methane and Carbon Dioxide Fluxes Using Measurements from the CARVE Tower
Northern high-latitude carbon sources and sinks, including those resulting from degrading permafrost, are thought to be sensitive to the rapidly warming climate. Because the near-surface atmosphere integrates surface fluxes over large ( ∼ 500–1000 km) scales, atmospheric monitoring of carbon dioxide...
Published in: | Atmospheric Chemistry and Physics |
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Technological University Dublin
2016
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Online Access: | https://arrow.tudublin.ie/scschbioart/243 https://doi.org/10.5194/acp-16-5383-2016 https://arrow.tudublin.ie/context/scschbioart/article/1254/viewcontent/Investigating_Alaskan_methane_and_carbon_dioxide_fluxes_using_measurements_from_the_CARVE_tower.pdf |
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ftdublininstt:oai:arrow.tudublin.ie:scschbioart-1254 2023-09-26T15:15:24+02:00 Investigating Alaskan Methane and Carbon Dioxide Fluxes Using Measurements from the CARVE Tower Karion, Anna Colm Sweeney, Colm Sweeney John B. Miller, John B. Miller Andrews, Arlyn E. Commane, Roisin Dinardo, Steven Henderson, John M. Lindaas, Jacob Lin, John C. Luus, Kristina Newberger, Tim Pieter Tans, Pieter Tans Wofsy, Steven C. Wolter, Sonja Miller, Charles E. 2016-01-01T08:00:00Z application/pdf https://arrow.tudublin.ie/scschbioart/243 https://doi.org/10.5194/acp-16-5383-2016 https://arrow.tudublin.ie/context/scschbioart/article/1254/viewcontent/Investigating_Alaskan_methane_and_carbon_dioxide_fluxes_using_measurements_from_the_CARVE_tower.pdf unknown Technological University Dublin https://arrow.tudublin.ie/scschbioart/243 doi:10.5194/acp-16-5383-2016 https://arrow.tudublin.ie/context/scschbioart/article/1254/viewcontent/Investigating_Alaskan_methane_and_carbon_dioxide_fluxes_using_measurements_from_the_CARVE_tower.pdf Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence Articles Alaskan methane carbon dioxide fluxes CARVE tower Chemistry Physics article 2016 ftdublininstt https://doi.org/10.5194/acp-16-5383-2016 2023-08-27T20:51:59Z Northern high-latitude carbon sources and sinks, including those resulting from degrading permafrost, are thought to be sensitive to the rapidly warming climate. Because the near-surface atmosphere integrates surface fluxes over large ( ∼ 500–1000 km) scales, atmospheric monitoring of carbon dioxide (CO2) and methane (CH4) mole fractions in the daytime mixed layer is a promising method for detecting change in the carbon cycle throughout boreal Alaska. Here we use CO2 and CH4 measurements from a NOAA tower 17 km north of Fairbanks, AK, established as part of NASA's Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE), to investigate regional fluxes of CO2 and CH4 for 2012–2014. CARVE was designed to use aircraft and surface observations to better understand and quantify the sensitivity of Alaskan carbon fluxes to climate variability. We use high-resolution meteorological fields from the Polar Weather Research and Forecasting (WRF) model coupled with the Stochastic Time-Inverted Lagrangian Transport model (hereafter, WRF-STILT), along with the Polar Vegetation Photosynthesis and Respiration Model (PolarVPRM), to investigate fluxes of CO2 in boreal Alaska using the tower observations, which are sensitive to large areas of central Alaska. We show that simulated PolarVPRM–WRF-STILT CO2 mole fractions show remarkably good agreement with tower observations, suggesting that the WRF-STILT model represents the meteorology of the region quite well, and that the PolarVPRM flux magnitudes and spatial distribution are generally consistent with CO2 mole fractions observed at the CARVE tower. One exception to this good agreement is that during the fall of all 3 years, PolarVPRM cannot reproduce the observed CO2 respiration. Using the WRF-STILT model, we find that average CH4 fluxes in boreal Alaska are somewhat lower than flux estimates by Chang et al. (2014) over all of Alaska for May–September 2012; we also find that enhancements appear to persist during some wintertime periods, augmenting those observed during the ... Article in Journal/Newspaper Arctic permafrost Alaska Dublin Institute of Technology: ARROW@DIT (Archiving Research Resources on he Web) Arctic Fairbanks Atmospheric Chemistry and Physics 16 8 5383 5398 |
institution |
Open Polar |
collection |
Dublin Institute of Technology: ARROW@DIT (Archiving Research Resources on he Web) |
op_collection_id |
ftdublininstt |
language |
unknown |
topic |
Alaskan methane carbon dioxide fluxes CARVE tower Chemistry Physics |
spellingShingle |
Alaskan methane carbon dioxide fluxes CARVE tower Chemistry Physics Karion, Anna Colm Sweeney, Colm Sweeney John B. Miller, John B. Miller Andrews, Arlyn E. Commane, Roisin Dinardo, Steven Henderson, John M. Lindaas, Jacob Lin, John C. Luus, Kristina Newberger, Tim Pieter Tans, Pieter Tans Wofsy, Steven C. Wolter, Sonja Miller, Charles E. Investigating Alaskan Methane and Carbon Dioxide Fluxes Using Measurements from the CARVE Tower |
topic_facet |
Alaskan methane carbon dioxide fluxes CARVE tower Chemistry Physics |
description |
Northern high-latitude carbon sources and sinks, including those resulting from degrading permafrost, are thought to be sensitive to the rapidly warming climate. Because the near-surface atmosphere integrates surface fluxes over large ( ∼ 500–1000 km) scales, atmospheric monitoring of carbon dioxide (CO2) and methane (CH4) mole fractions in the daytime mixed layer is a promising method for detecting change in the carbon cycle throughout boreal Alaska. Here we use CO2 and CH4 measurements from a NOAA tower 17 km north of Fairbanks, AK, established as part of NASA's Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE), to investigate regional fluxes of CO2 and CH4 for 2012–2014. CARVE was designed to use aircraft and surface observations to better understand and quantify the sensitivity of Alaskan carbon fluxes to climate variability. We use high-resolution meteorological fields from the Polar Weather Research and Forecasting (WRF) model coupled with the Stochastic Time-Inverted Lagrangian Transport model (hereafter, WRF-STILT), along with the Polar Vegetation Photosynthesis and Respiration Model (PolarVPRM), to investigate fluxes of CO2 in boreal Alaska using the tower observations, which are sensitive to large areas of central Alaska. We show that simulated PolarVPRM–WRF-STILT CO2 mole fractions show remarkably good agreement with tower observations, suggesting that the WRF-STILT model represents the meteorology of the region quite well, and that the PolarVPRM flux magnitudes and spatial distribution are generally consistent with CO2 mole fractions observed at the CARVE tower. One exception to this good agreement is that during the fall of all 3 years, PolarVPRM cannot reproduce the observed CO2 respiration. Using the WRF-STILT model, we find that average CH4 fluxes in boreal Alaska are somewhat lower than flux estimates by Chang et al. (2014) over all of Alaska for May–September 2012; we also find that enhancements appear to persist during some wintertime periods, augmenting those observed during the ... |
format |
Article in Journal/Newspaper |
author |
Karion, Anna Colm Sweeney, Colm Sweeney John B. Miller, John B. Miller Andrews, Arlyn E. Commane, Roisin Dinardo, Steven Henderson, John M. Lindaas, Jacob Lin, John C. Luus, Kristina Newberger, Tim Pieter Tans, Pieter Tans Wofsy, Steven C. Wolter, Sonja Miller, Charles E. |
author_facet |
Karion, Anna Colm Sweeney, Colm Sweeney John B. Miller, John B. Miller Andrews, Arlyn E. Commane, Roisin Dinardo, Steven Henderson, John M. Lindaas, Jacob Lin, John C. Luus, Kristina Newberger, Tim Pieter Tans, Pieter Tans Wofsy, Steven C. Wolter, Sonja Miller, Charles E. |
author_sort |
Karion, Anna |
title |
Investigating Alaskan Methane and Carbon Dioxide Fluxes Using Measurements from the CARVE Tower |
title_short |
Investigating Alaskan Methane and Carbon Dioxide Fluxes Using Measurements from the CARVE Tower |
title_full |
Investigating Alaskan Methane and Carbon Dioxide Fluxes Using Measurements from the CARVE Tower |
title_fullStr |
Investigating Alaskan Methane and Carbon Dioxide Fluxes Using Measurements from the CARVE Tower |
title_full_unstemmed |
Investigating Alaskan Methane and Carbon Dioxide Fluxes Using Measurements from the CARVE Tower |
title_sort |
investigating alaskan methane and carbon dioxide fluxes using measurements from the carve tower |
publisher |
Technological University Dublin |
publishDate |
2016 |
url |
https://arrow.tudublin.ie/scschbioart/243 https://doi.org/10.5194/acp-16-5383-2016 https://arrow.tudublin.ie/context/scschbioart/article/1254/viewcontent/Investigating_Alaskan_methane_and_carbon_dioxide_fluxes_using_measurements_from_the_CARVE_tower.pdf |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic permafrost Alaska |
genre_facet |
Arctic permafrost Alaska |
op_source |
Articles |
op_relation |
https://arrow.tudublin.ie/scschbioart/243 doi:10.5194/acp-16-5383-2016 https://arrow.tudublin.ie/context/scschbioart/article/1254/viewcontent/Investigating_Alaskan_methane_and_carbon_dioxide_fluxes_using_measurements_from_the_CARVE_tower.pdf |
op_rights |
Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence |
op_doi |
https://doi.org/10.5194/acp-16-5383-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
8 |
container_start_page |
5383 |
op_container_end_page |
5398 |
_version_ |
1778136339616628736 |