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* Meteorological and flux data measured at a mature black spruce forest in UAF
*
* by Dr. M. Ueyama (Osaka Prefecture University),
* Dr. H. Iwata (Shinshu University),and
* Dr. Y. Harazono (International Arctic Research Center, UAF) .
*
* 2015.05.28
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Overview

In order to understand long-term variabilities in carbon and water exchanges in sub-arctic forests under changing climate, carbon, water, and energy fluxes have been measured by the eddy covariance method from October 2002. Other micrometeorological and soil environmental data has also been continuously measured. This dataset provides the flux and environmental data from 2003 to 2011. Details, such as the measurements, data processing, and site descriptions, were documented in papers listed below. This project was supported by NSF, IARC-JAXA Information system, and KAKENHI.

Data

Current weather data

Meteorlogical data from 2003 to 2013 uploaded at 2015.05.28

Gap-filled meteorlogical data from 2003 to 2012 uploaded at 2015.08.24

Flux data from 2003 to 2011 uploaded at 2015.05.28

Meta Data uploaded at 2015.05.28

Read me uploaded at 2015.05.28

real time browser of meteorological data

We would like to know about the type of research for which our data will be used, and to check for a possible overlapping with our current on-going research. In such cases we may request some coordination of the publications. We may point out potential basis for new collaborations. When your work is published using the data we provided, please notify us and send us a copy of the publication. If you need additional supporting data for this site, please let me know the following address.

Masahito UEYAMA : miyabi-flux (at) muh.biglobe.ne.jp
Hiroki IWATA : hiwata (at) shinshu-u.ac.jp

Site Description

Location : 64°51’58.57″N, 147°51’19.91″W

Elevataion : 158 m

Vegetation : Open black spruce forest on the permafrost

AmeriFlux : US-Uaf

Citations
CO₂ flux : Ueyama, M., Iwata, H., and Harazono, Y. 2014. Autumn warming reduces the CO₂ sink of a black spruce forest in interior Alaska based on a nine-year eddy covariance measurement. Global Change Biol., 20, 1161-1173, doi: 10.1111/gcb.12434.

Energy Flux : 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.

References
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., 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.

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.

Ueyama, M. and Harazono, Y. 2007b. Continuous observation at a sub-arctic black spruce forest in interior Alaska. AsiaFlux Newsletter 22, 25-33.

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.

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, 171-183.

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, 47-60.

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, 582-602.

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, 391-405.

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. Earth Interactions, 14, 1-27.

Iwata, H., Ueyama, M., Harazono, Y., Tsuyuzaki, S., Kondo, M., and Uchida, M. 2011. Quick recovery of carbon dioxide exchanges in a burned black spruce forest in interior Alaska. SOLA, 7, 105-108.

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.

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, 175-181.

Ueyama, M., Iwata, H., Harazono, Y., Euskirchen, E. S., Oechel, W. C., and Zona, D. 2013. Growing season and spatial variations of carbon fluxes of arctic and boreal ecosystems in Alaska. Ecological Applications, 28, 1798-1816.

Ueyama, M., Iwata, H., and Harazono, Y. 2014. Autumn warming reduces the CO₂ sink of a black spruce forest in interior Alaska based on a nine-year eddy covariance measurement. Global Change Biol., 20, 1161-1173, doi: 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, 52-59.

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., in press.

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, in press.

Kobayashi, H., Yunus, A. P., Nagai, S., Dam, B. V., Harazono, Y., Bret-Harte, D., Ichii, K., Ikawa, H., Iwata, H., Kim, Y., Nagano, H., Oechel, W. C., Sugiura, K., Ueyama, M., Zona, D., and Suzuki, R. 2016. Latitudinal gradient of forest understory and tundra phenology in Alaska as observed from satellite and ground-based data. Remote Sens. Environ., 177, 160-170.

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, 98-111.

Ueyama M., Tahara, N., Nagano, H., Makita, N., Iwata, H., and Harazono, Y. 2018. Leaf- and ecosystem-scale photosynthetic parameters for the overstory and understory of boreal forests in interior Alaska, Journal of Agricultural Meteorology, in press.