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Publications Found: 1437

Spatial Scale And Landscape Heterogeneity Effects On Fapar In An Open-Canopy Black Spruce Forest In Interior Alaska
Kobayashi, H., Suzuki, R., Nagai, S., Nakai, T., Kim, Y.

Black spruce forests dominate the land cover in interior Alaska. In this region, satellite remote sensing of ecosys- tem productivity is useful for evaluating black spruce for- est status and recovery processes. The fraction of absorbed photosynthetically active radiation (FAPAR) by green leaves is a particularly important input …


Journal: Ieee Geoscience And Remote Sensing Letters, Volume 11 (2): 564-568 (2014). DOI: 10.1109/LGRS.2013.2278426 Sites: US-Prr

Energy Budget Closure Observed In Paired Eddy Covariance Towers With Increased And Continuous Daily Turbulence
Anderson, R. G., Wang, D.

The lack of energy closure has been a longstanding issue with Eddy Covariance (EC). Multiple mechanisms have been proposed to explain the discrepancies in energy balance including diurnal energy storage changes, advection of energy, and larger scale turbulent processes that cannot be resolved by field EC. To investigate the energy …


Journal: Agricultural And Forest Meteorology, Volume 184: 204-209 (2014). DOI: 10.1016/j.agrformet.2013.09.012 Sites: US-SuS, US-SuW

Ecological Processes Dominate The13c Land Disequilibrium In A Rocky Mountain Subalpine Forest
Bowling, D. R., Ballantyne, A. P., Miller, J. B., Burns, S. P., Conway, T. J., Menzer, O., Stephens, B. B., Vaughn, B. H.


Journal: Global Biogeochemical Cycles, Volume 28 (4): 352-370 (2014). DOI: 10.1002/2013GB004686 Sites: US-NR1

Annual Patterns And Budget Of CO2 Flux In An Arctic Tussock Tundra Ecosystem
Oechel, W. C., Laskowski, C. A., Burba, G., Gioli, B., Kalhori, A. A.

The functioning of Arctic ecosystems is not only critically affected by climate change, but it also has the potential for major positive feedback on climate. There is, however, relatively little information …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 119 (3): 323-339 (2014). DOI: 10.1002/2013JG002431 Sites: US-Atq

Data-Based Perfect-Deficit Approach To Understanding Climate Extremes And Forest Carbon Assimilation Capacity
Wei, S., Yi, C., Hendrey, G., Eaton, T., Rustic, G., Wang, S., Liu, H., Krakauer, N. Y., Wang, W., Desai, A. R., Montagnani, L., Tha Paw U, K., Falk, M., Black, A., Bernhofer, C., Grünwald, T., Laurila, T., Cescatti, A., Moors, E., Bracho, R., Valentini, R.

Several lines of evidence suggest that the warming climate plays a vital role in driving certain types of extreme weather. The impact of warming and of extreme weather on forest carbon assimilation capacity is poorly known. Filling this knowledge gap is critical towards understanding …


Journal: Environmental Research Letters, Volume 9 (6): 065002-n/a (2014). DOI: 10.1088/1748-9326/9/6/065002 Sites: BR-Ma2

An improved approach for remotely sensing water stress impacts on forest C uptake
Sims, D.A., Brzostek, E.R., Dragoni, D., Rahman, A.F., Phillips, R.P.

Given that forests represent the primary terrestrial sink for atmospheric CO2, projections of future carbon (C) storage hinge on forest responses to climate variation. Models of gross primary production (GPP) responses to water stress are commonly based on remotely sensed changes in canopy ‘greenness’ (e.g., normalized difference …


Journal: Global Change Biology, Volume 20 (9): 2856-2866 (2014). DOI: 10.1111 Sites: US-MMS

Two Bogs In The Canadian Hudson Bay Lowlands And A Temperate Bog Reveal Similar Annual Net Ecosystem Exchange Of Co2
Humphreys, E. R., Charron, C., Brown, M., Jones, R.


Journal: Arctic, Antarctic, And Alpine Research, Volume 46 (1): 103-113 (2014). DOI: 10.1657/1938-4246.46.1.103 Sites: CA-ARB, CA-KLP, CA-Mer

CO2, CO, And CH4 Measurements From Tall Towers In The NOAA Earth System Research Laboratory's Global Greenhouse Gas Reference Network: Instrumentation, Uncertainty Analysis, And Recommendations For Future High-Accuracy Greenhouse Gas Monitoring Efforts
Andrews, A.E., Kofler, J.D., Trudeau, M.E., Williams, J.C., Neff, D.H., Masarie, K.A., Chao, D.Y., Kitzis, D.R., Novelli, P.C., Zhao, C.L., Dlugokencky, E.J., Lang, P.M., Crotwell, M.J., Fischer, M.L., Parker, M.J., Lee, J.T., Baumann, D.D., Desai, A.R., Stanier, C.O., de Wekker, S.F.J., Wolfe, D.E., Munger, J.W., Tans, P.P.

A reliable and precise in situ CO2 and CO analysis system has been developed and deployed at eight sites in the NOAA Earth System Research Laboratory’s (ESRL) Global Greenhouse Gas Reference Network. The network uses very tall (> 300 m) television and radio transmitter towers that provide a convenient platform for mid-boundary-layer …


Journal: Atmospheric Measurement Techniques, Volume 7 (2): 647-687 (2014). DOI: 10.5194/amt-7-647-2014 Sites: US-PFa

When Vegetation Change Alters Ecosystem Water Availability
Scott, R. L., Huxman, T. E., Barron-Gafford, G. A., Darrel Jenerette, G., Young, J. M., Hamerlynck, E. P.

The combined effects of vegetation and climate change on biosphere–atmosphere water vapor (H2O) and carbon dioxide (CO2) exchanges are expected to vary depending, in part, on how biotic activity is controlled by and alters water availability. This is particularly important when a change in ecosystem composition alters the fractional …


Journal: Global Change Biology, Volume 20 (7): 2198-2210 (2014). DOI: 10.1111/gcb.12511 Sites: US-CMW

Autumn Warming Reduces The Co2sink Of A Black Spruce Forest In Interior Alaska Based On A Nine-Year Eddy Covariance Measurement
Ueyama, M., Iwata, H., Harazono, Y.


Journal: Global Change Biology, Volume 20 (4): 1161-1173 (2014). DOI: doi:10.1111/gcb.12434 Sites: US-Uaf

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