Publications

Publications Found: 1437

Biases In Regional Carbon Budgets From Covariation Of Surface Fluxes And Weather In Transport Model Inversions
Williams, I. N., Riley, W. J., Torn, M. S., Biraud, S. C., Fischer, M. L.

Recent advances in atmospheric transport model inversions could significantly reduce uncertainties in land carbon uptake through the assimilation of CO2 concentration measurements at weekly and shorter timescales. The potential of these measurements for reducing biases in estimated land carbon sinks depends on the strength of covariation …


Journal: Atmospheric Chemistry And Physics, Volume 14 (3): 1571-1585 (2014). DOI: http://doi.org/10.5194/acp-14-1571-2014 Sites: US-ARM

Eight Years Of Forest-Floor Co2 Exchange In A Boreal Black Spruce Forest: Spatial Integration And Long-Term Temporal Trends
Gaumont-Guay, D., Black, T., Barr, A., Griffis, T., Jassal, R., Krishnan, P., Grant, N., Nesic, Z.

Automated measurements of the net forestfloor
CO2 exchange (NFFE) were made in a mature (130yearold)
boreal black spruce forest over an 8year
period (2002–2009) with the objectives of (1) quantifying
the spatial and temporal (seasonal and interannual) patterns in NFFE, soil respiration (SR) and gross forestfloor
photosynthesis …


Journal: Agricultural And Forest Meteorology, Volume 184: 25-35 (2014). DOI: 10.1016/j.agrformet.2013.08.010 Sites: CA-Obs

Impact Of Mountain Pine Beetle Induced Mortality On Forest Carbon And Water Fluxes
E Reed, D., Ewers, B. E., Pendall, E.

Quantifying impacts of ecological disturbance on ecosystem carbon and water fluxes will improve predictive understanding of biosphere—atmosphere feedbacks. Tree mortality caused by mountain pine bark beetles (Dendroctonus ponderosae) is hypothesized to decrease photosynthesis and water flux to the atmosphere while increasing respiration …


Journal: Environmental Research Letters, Volume 9 (10): 105004 (2014). DOI: 10.1088/1748-9326/9/10/105004 Sites: US-CPk

Measuring Fluxes of Trace Gases and Energy between Ecosystems and the Atmosphere—the State and Future of the Eddy Covariance Method
Baldocchi, D.

The application of the eddy covariance flux method to measure fluxes of trace gas and energy between ecosystems and the atmosphere has exploded over the past 25 years. This opinion paper provides a perspective on the contributions and future opportunities of the eddy covariance method. First, the paper discusses the pros and cons …


Journal: Global Change Biology, Volume n/a: 1-10 (2014). DOI: 10.1111/gcb.12649 Sites:

Estimating Landscape Net Ecosystem Exchange At High Spatial–Temporal Resolution Based On Landsat Data, An Improved Upscaling Model Framework, And Eddy Covariance Flux Measurements
Fu, D., Chen, B., Zhang, H., Wang, J., Black, T. A., Amiro, B. D., Bohrer, G., Bolstad, P., Coulter, R., Rahman, A. F., Dunn, A., McCaughey, J. H., Meyers, T., Verma, S.


Journal: Remote Sensing Of Environment, Volume 141: 90-104 (2014). DOI: 10.1016/j.rse.2013.10.029 Sites: US-UMB

Annual patterns and budget of CO2 flux in an Arctic tussock tundra ecosystem
Oechel, Walter. C., Cheryl. A. Laskowski, George. Burba, Beniamino. Gioli, Aram. A. M. Kalhori

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 on the role, patterns, and vulnerabilities of CO2 fluxes during the nonsummer seasons in Arctic ecosystems. Presented here is …


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

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

The seasonal and diurnal dynamics of methane flux at a created urban wetland
Morin, T.H. Bohrer, G. Naor-Azrieli, L. Mesi, S. Kenny, W.T. Mitsch, W.J. Schäfer, K.V.R.

Wetlands provide important ecosystem services and store carbon dioxide but are also an important global source of methane – a potent greenhouse gas. In order to understand the dynamics of methane emissions from a temperate reconstructed wetland, methane fluxes were measured continuously over 2 years using the eddy covariance method …


Journal: Ecological Engineering, Volume 72: 74-83 (2014). DOI: 10.1016/j.ecoleng.2014.02.002 Sites: US-ORv

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