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Title: Micrometeorological measurements of CH[sub 4] and CO[sub 2] exchange between the atmosphere and subarctic tundra

Abstract

Eddy correlation flux measurements and concentration profiles of total hydrocarbons (THC) and CO[sub 2] were combined to provide a comprehensive record of atmosphere-biosphere exchange for these gases over a 30-day period in July-August 1988 in the Yukon-Kuskokwin River Delta of Alaska. Over 90 percent of net ecosystem exchanges of THC were due to methane. Lakes and wet meadow tundra provided the major sources of methane. The average fluxes from lake, dry tundra, and wet tundra were 11 +/- 3, 29 +/- 3, and 57 +/- 6 mg CH4/sq m/d, respectively. The mean remission rate for the site was 25 mg/sq m/d. Maximum uptake of CO[sub 2] by the tundra was 1.4 gC/sq m/d between 1000 and 1500 hrs, and nocturnal respiration averaged 0.73 gC/sq m/d. Net uptake of CO[sub 2] was 0.30 gC/sq m/d for the 30 days of measurement; methane flux accounted for 6 percent of CO2 net uptake. 53 refs.

Authors:
; ; ; ; ; ; ; ;  [1]
  1. Harvard Univ., Cambridge, MA (United States) Aerodyne Research, Inc., Center for Chemical and Environmental Physics, Billerica, MA (United States) New York State Univ., Albany (United States)
Publication Date:
OSTI Identifier:
7065763
Resource Type:
Journal Article
Journal Name:
Journal of Geophysical Research; (United States)
Additional Journal Information:
Journal Volume: 97; Journal ID: ISSN 0148-0227
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ARCTIC REGIONS; MONITORING; EARTH ATMOSPHERE; HYDROCARBONS; TROPOSPHERE; ATMOSPHERIC CHEMISTRY; CARBON DIOXIDE; METHANE; TUNDRA; ALKANES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMISTRY; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POLAR REGIONS; 540120* - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-)

Citation Formats

Fan, S M, Wofsy, S C, Bakwin, P S, Jacob, D J, Anderson, S M, Kebabian, P L, Mcmanus, J B, Kolb, C E, and Fitzjarrald, D R. Micrometeorological measurements of CH[sub 4] and CO[sub 2] exchange between the atmosphere and subarctic tundra. United States: N. p., 1992. Web. doi:10.1029/91JD02531.
Fan, S M, Wofsy, S C, Bakwin, P S, Jacob, D J, Anderson, S M, Kebabian, P L, Mcmanus, J B, Kolb, C E, & Fitzjarrald, D R. Micrometeorological measurements of CH[sub 4] and CO[sub 2] exchange between the atmosphere and subarctic tundra. United States. https://doi.org/10.1029/91JD02531
Fan, S M, Wofsy, S C, Bakwin, P S, Jacob, D J, Anderson, S M, Kebabian, P L, Mcmanus, J B, Kolb, C E, and Fitzjarrald, D R. 1992. "Micrometeorological measurements of CH[sub 4] and CO[sub 2] exchange between the atmosphere and subarctic tundra". United States. https://doi.org/10.1029/91JD02531.
@article{osti_7065763,
title = {Micrometeorological measurements of CH[sub 4] and CO[sub 2] exchange between the atmosphere and subarctic tundra},
author = {Fan, S M and Wofsy, S C and Bakwin, P S and Jacob, D J and Anderson, S M and Kebabian, P L and Mcmanus, J B and Kolb, C E and Fitzjarrald, D R},
abstractNote = {Eddy correlation flux measurements and concentration profiles of total hydrocarbons (THC) and CO[sub 2] were combined to provide a comprehensive record of atmosphere-biosphere exchange for these gases over a 30-day period in July-August 1988 in the Yukon-Kuskokwin River Delta of Alaska. Over 90 percent of net ecosystem exchanges of THC were due to methane. Lakes and wet meadow tundra provided the major sources of methane. The average fluxes from lake, dry tundra, and wet tundra were 11 +/- 3, 29 +/- 3, and 57 +/- 6 mg CH4/sq m/d, respectively. The mean remission rate for the site was 25 mg/sq m/d. Maximum uptake of CO[sub 2] by the tundra was 1.4 gC/sq m/d between 1000 and 1500 hrs, and nocturnal respiration averaged 0.73 gC/sq m/d. Net uptake of CO[sub 2] was 0.30 gC/sq m/d for the 30 days of measurement; methane flux accounted for 6 percent of CO2 net uptake. 53 refs.},
doi = {10.1029/91JD02531},
url = {https://www.osti.gov/biblio/7065763}, journal = {Journal of Geophysical Research; (United States)},
issn = {0148-0227},
number = ,
volume = 97,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 1992},
month = {Thu Oct 01 00:00:00 EDT 1992}
}