Publications

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Publications Found: 24

Modeling Three-Dimensional Forest Structures To Drive Canopy Radiative Transfer Simulations Of Bidirectional Reflectance Factor
Yang, W., Kobayashi, H., Chen, X., Nasahara, K. N., Suzuki, R., Kondoh, A.


Journal: International Journal Of Digital Earth, Volume : 1-20 (2017), ISBN . DOI: 10.1080/17538947.2017.1353146 Sites: US-Prr

Trapped Greenhouse Gases In The Permafrost Active Layer: Preliminary Results For Methane Peaks In Vertical Profiles Of Frozen Alaskan Soil Cores
Byun, E., Yang, J., Kim, Y., Ahn, J.

Copyright © 2016 John Wiley & Sons, Ltd.Degradation of organic carbon stored in permafrost may represent an additional source of atmospheric greenhouse gases (GHGs) in a warming climate. However, there is no clear understanding of how seasonal freeze–thaw affects gas permeability and emission of methane in permafrost soils, …


Journal: Permafrost And Periglacial Processes, Volume 28 (2): 477-484 (2017), ISBN . DOI: 10.1002/ppp.1935 Sites: US-Prr

Trapped Greenhouse Gases In The Permafrost Active Layer: Preliminary Results For Methane Peaks In Vertical Profiles Of Frozen Alaskan Soil Cores
Byun, E., Yang, J., Kim, Y., Ahn, J.

Copyright © 2016 John Wiley & Sons, Ltd.Degradation of organic carbon stored in permafrost may represent an additional source of atmospheric greenhouse gases (GHGs) in a warming climate. However, there is no clear understanding of how seasonal freeze–thaw affects gas permeability and emission of methane in permafrost soils, …


Journal: Permafrost And Periglacial Processes, Volume 28 (2): 477-484 (2017), ISBN . DOI: 10.1002/ppp.1935 Sites: US-Prr

Optimization of a biochemical model with eddy covariance measurements in black spruce forests of Alaska for estimating CO2 fertilization effects
Ueyama, M., Tahara, N., Iwata, H., Euskirchen, E. S., Ikawa, H., Kobayashi, H., Nagano, H., Nakai, T., and Harazono, Y.


Journal: Agric. Forest Meteorol., Volume 222: 98-111 (2016), ISBN . DOI: Sites: US-Prr, US-Uaf

Optimization Of A Biochemical Model With Eddy Covariance Measurements In Black Spruce Forests Of Alaska For Estimating Co 2 Fertilization Effects
Ueyama, M., Tahara, N., Iwata, H., Euskirchen, E. S., Ikawa, H., Kobayashi, H., Nagano, H., Nakai, T., Harazono, Y.


Journal: Agricultural And Forest Meteorology, Volume 222: 98-111 (2016), ISBN . DOI: 10.1016/j.agrformet.2016.03.007 Sites: US-Bn1, US-Prr

Optimization Of A Biochemical Model With Eddy Covariance Measurements In Black Spruce Forests Of Alaska For Estimating Co 2 Fertilization Effects
Ueyama, M., Tahara, N., Iwata, H., Euskirchen, E. S., Ikawa, H., Kobayashi, H., Nagano, H., Nakai, T., Harazono, Y.

Understanding how high-latitude terrestrial productivity and evapotranspiration change in association with rising atmospheric CO2 concentration ([CO2]), also known as ‘CO2 fertilization’, is important for predicting future climate change. To quantify the magnitude of this fertilization effect, we have devel- oped a …


Journal: Agricultural And Forest Meteorology, Volume 222: 98-111 (2016), ISBN . DOI: 10.1016/j.agrformet.2016.03.007 Sites: US-Bn1, US-Bn2, US-Bn3, US-Prr

Latitudinal Gradient Of Spruce Forest Understory And Tundra Phenology In Alaska As Observed From Satellite And Ground-Based Data
Kobayashi, H., Yunus, A. P., Nagai, S., Sugiura, K., Kim, Y., Van Dam, B., Nagano, H., Zona, D., Harazono, Y., Bret-Harte, M. S., Ichii, K., Ikawa, H., Iwata, H., Oechel, W. C., Ueyama, M., Suzuki, R.

The latitudinal gradient of the start of the growing season (SOS) and the end of the growing season (EOS) were quantified in Alaska (61°N to 71°N) using satellite-based and ground-based datasets. The Alaskan evergreen needleleaf forests are sparse and the understory vegetation has a substantial impact on the satellite signal. We …


Journal: Remote Sensing Of Environment, Volume 177: 160-170 (2016), ISBN . DOI: 10.1016/j.rse.2016.02.020 Sites: US-Prr

Understory Co 2 , Sensible Heat, And Latent Heat Fluxes In A Black Spruce Forest In Interior Alaska
Ikawa, H., Nakai, T., Busey, R. C., Kim, Y., Kobayashi, H., Nagai, S., Ueyama, M., Saito, K., Nagano, H., Suzuki, R., Hinzman, L.

An open black spruce forest, the most common ecosystem in interior Alaska, is characterized by patchy canopy gaps where the forest understory is exposed. This study measured CO2, sensible heat, and latent heat fluxes with eddy covariance (EC) in one of those large canopy gaps, and estimated understory fluxes in a black spruce forest …


Journal: Agricultural And Forest Meteorology, Volume 214-215: 80-90 (2015), ISBN . DOI: 10.1016/j.agrformet.2015.08.247 Sites: US-Prr

Understory CO2, Sensible Heat, and Latent Heat Fluxes in a Black Spruce Forest in Interior Alaska


Journal: Agricultural And Forest Meteorology, Volume 214-215: 80-90 (2015), ISBN . DOI: 10.1016/j.agrformet.2015.08.247 Sites: US-Prr

Does summer warming reduce black spruce productivity in interior Alaska?
Ueyama, M., Kudo, S., Iwama, C., Nagano, H., Kobayashi, H., Harazono, Y. and Yoshikawa, K.


Journal: J. Forest Res., Volume 20: 52-59 (2014), ISBN . DOI: Sites: US-Prr, US-Uaf