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US-Uaf: University of Alaska, Fairbanks

Tower_team:
PI: Hiroki Iwata [email protected] - Shinshu University
PI: Masahito Ueyama [email protected] - Osaka Metropolitan University
PI: Yoshinobu Harazono [email protected] - Osaka Prefecture University
Technician: Naoki Kukuu [email protected] - Wood River Field Services (Contractor)
Lat, Long: 64.8663, -147.8555
Elevation(m): 155
Network Affiliations: AmeriFlux
Vegetation IGBP: ENF (Evergreen Needleleaf Forests: Lands dominated by woody vegetation with a percent cover >60% and height exceeding 2 meters. Almost all trees remain green all year. Canopy is never without green foliage.)
Climate Koeppen: Dwc (Subarctic: severe, dry winter, cool summer )
Mean Annual Temp (°C): -2.9
Mean Annual Precip. (mm): 263
Years Data Collected: 2002 - Present
Years Data Available:

FLUXNET-CH4 2011 - 2018   Data Citation
Description: This tower is located near Smith Lake, University of Alaska, Fairbanks. The open black spruce is dominated on discontinuous permafrost.
URL: http://atmenv.envi.osakafu-u.ac.jp/data/uaf_data/
Research Topics: Long-term monitoring energy & greenhouse gas fluxes under high-latitude climate change
Acknowledgment: Supported by Arctic Challenge for Sustainability (ArCS) project by the Ministry of Education, Culture, Sports, Science and Technology, Japan.

US-Uaf: University of Alaska, Fairbanks

Use the information below for citation of this site. See the Data Policy page for more details.

DOI(s) for citing US-Uaf data

Data Use Policy:

This site’s data can also be used under the more restrictive Tier 2 policy.
The Tier 2 Policy must be followed if US-Uaf data are combined with data from sites that require the Tier 2 Policy.

Publication(s) for citing site characterization

  • Chu, H., Luo, X., Ouyang, Z., Chan, W. S., Dengel, S., Biraud, S. C., Torn, M. S., Metzger, S., Kumar, J., Arain, M. A., Arkebauer, T. J., Baldocchi, D., Bernacchi, C., Billesbach, D., Black, T. A., Blanken, P. D., Bohrer, G., Bracho, R., Brown, S., Brunsell, N. A., Chen, J., Chen, X., Clark, K., Desai, A. R., Duman, T., Durden, D., Fares, S., Forbrich, I., Gamon, J. A., Gough, C. M., Griffis, T., Helbig, M., Hollinger, D., Humphreys, E., Ikawa, H., Iwata, H., Ju, Y., Knowles, J. F., Knox, S. H., Kobayashi, H., Kolb, T., Law, B., Lee, X., Litvak, M., Liu, H., Munger, J. W., Noormets, A., Novick, K., Oberbauer, S. F., Oechel, W., Oikawa, P., Papuga, S. A., Pendall, E., Prajapati, P., Prueger, J., Quinton, W. L., Richardson, A. D., Russell, E. S., Scott, R. L., Starr, G., Staebler, R., Stoy, P. C., Stuart-Haëntjens, E., Sonnentag, O., Sullivan, R. C., Suyker, A., Ueyama, M., Vargas, R., Wood, J. D., Zona, D. (2021) Representativeness Of Eddy-Covariance Flux Footprints For Areas Surrounding Ameriflux Sites, Agricultural And Forest Meteorology, 301-302(18), 108350. https://doi.org/10.1016/J.AGRFORMET.2021.108350
  • Date, T., Ueyama. M., Harazono, Y., Ota, Y., Iwata, T. and Yamamoto, S. (2009) Satellite observations of decadal scale CO2 fluxes over black spruce forests in Alaska associated with climate variability., J. Agric. Meteorol., 65(107-115), 47-60.
  • Harazono, Y., Iwata, H., Sakabe, A., Ueyama, M., Takahashi, K., Nagano, H., Nakai, T., and Kosugi, Y. (2015) Effects of water vapor dilution on trace gas flux, and practical correction methods, J. Agric. Meteorol., 71(4), 65-76.
  • Iwata, H., Harazono, Y., and Ueyama, M. (2010) Influence of source/sink distributions on flux-gradient relationships in the roughtness sublayer over an open forest canopy under unstable conditions, Boundary Layer Meteorol., 136(107-115), 391-405.
  • Iwata, H., Harazono, Y., and Ueyama, M. (2012) Sensitivity and offset changes of a fast-response open-path infrared gas analyzer during long-term observations in an Arctic environment, J. Agric. Meteorol., 68(107-115), 175-181.
  • Iwata, H., Harazono, Y., and Ueyama, M. (2012) The role of permafrost on water exchange of a black spruce forest in Interior Alaska, Agric. Forest Meteorol., 161(107-115), 223-233.
  • Iwata, H., Harazono, Y., Ueyama, M., Sakabe, A., Nagano H., Kosugi, Y., Takahashi, K., and Kim, Y. (2015) Methane exchange in a poorly-drained black spruce forest over permafrost observed using the eddy covariance technique, Agric. Forest Meteorol., 214-215(4), 157-168.
  • Kim, Y., Ueyama, M., Nakagawa, F., Tsunogai, U., Harazono, Y. and Tanaka, N. (2007) Assessment of winter fluxes of CO2 and CH4 in boreal forest soils of central Alaska estimated by the profile method and the chamber method: A diagnosis of methane emission and implications for the regional carbon budget, Tellus, 59B(), 223-233.
  • Kim, Y., Ueyama, M., Nakagawa, F., Tsunogai, U., Harazono, Y. and Tanaka, N. (2007) Assessment of winter fluxes of CO2 and CH4 in boreal forest soils of central Alaska estimated by the profile method and the chamber method: A diagnosis of methane emission and implications for the regional carbon budget, Tellus, 59B(18), 223-233.
  • Kitamoto, T., Ueyama, M., Harazono, Y., Iwata, T. and Yamamoto, S. (2007) Applications of NOAA/AVHRR and observed fluxes to estimate regional carbon fluxes over black spruce forests in Alaska., J. Agric. Meteorol., 63(107-115), 171-183.
  • Masahito UEYAMA, Narumi TAHARA, Hirohiko NAGANO, Naoki MAKITA, Hiroki IWATA, Yoshinobu HARAZONO (2018) Leaf- and ecosystem-scale photosynthetic parameters for the overstory and understory of boreal forests in interior Alaska, journal of Agricultural Meteorology, 74(2), 79-86.
  • Ueyama, M., Harazaono, Y., Okada, R., Nojiri, A., Ohtaki, E. and Miyata, A. (2006) Micrometeorological measurements of methane flux at a boreal forest in central Alaska, Mem. Natl Inst. Polar Res., Spec. Issue, 59(), 156-167.
  • Ueyama, M., Harazaono, Y., Okada, R., Nojiri, A., Ohtaki, E. and Miyata, A. (2006) Micrometeorological measurements of methane flux at a boreal forest in central Alaska, Mem. Natl Inst. Polar Res., Spec. Issue, 59(18), 156-167.
  • Ueyama, M., Harazono, Y., and Ichii, K. (2010) Satellite-based modeling of the carbon fluxes in mature black spruce forests in Alaska: a synthesis of the eddy covariance data and satellite remote sensing data, 2010, 14(107-115), 1-27.
  • Ueyama, M., Harazono, Y., Kim, Y. and Tanaka, N. (2009) Response of the carbon cycle in sub-arctic black spruce forests to climate change: Reduction of a carbon sink related to the sensitivity of heterotrophic respiration., Agric. Forest Meteorol., 149(107-115), 582-602.
  • Ueyama, M., Harazono, Y., Okada, R., Nojiri, A., Ohataki, E. and Miyata, A. (2006) Controlling factors on the inter-annual CO2 budget at a sub-arctic black spruce forest in interior Alaska, Tellus, 58B(), 491-501.
  • Ueyama, M., Harazono, Y., Okada, R., Nojiri, A., Ohataki, E. and Miyata, A. (2006) Controlling factors on the inter-annual CO2 budget at a sub-arctic black spruce forest in interior Alaska, Tellus, 58B(18), 491-501.
  • Ueyama, M., Iwata, H., Harazono, Y. (2014) Autumn Warming Reduces The Co2sink Of A Black Spruce Forest In Interior Alaska Based On A Nine-Year Eddy Covariance Measurement, Global Change Biology, 20(4), 1161-1173. https://doi.org/10.1111/GCB.12434
  • Ueyama, M., Kudo, S., Iwama, C., Nagano, H., Kobayashi, H., Harazono, Y. and Yoshikawa, K. (2014) Does summer warming reduce black spruce productivity in interior Alaska?, J. Forest Res., 20(4), 52-59.
  • Ueyama, M., Tahara, N., Iwata, H., Euskirchen, E. S., Ikawa, H., Kobayashi, H., Nagano, H., Nakai, T., and Harazono, Y. (2016) Optimization of a biochemical model with eddy covariance measurements in black spruce forests of Alaska for estimating CO2 fertilization effects, Agric. Forest Meteorol., 222(4), 98-111.
  • Ueyama, M., Yamamori, T., Iwata, H., Harazono, Y. (2020) Cooling And Moistening Of The Planetary Boundary Layer In Interior Alaska Due To A Postfire Change In Surface Energy Exchange, Journal Of Geophysical Research: Atmospheres, 125(18), 79-86. https://doi.org/10.1029/2020JD032968

Acknowledgments

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US-Uaf: University of Alaska, Fairbanks

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