Publications

Publications Found: 1437

Empirical assessment of uncertainties of meteorological parameters and turbulent fluxes in the AmeriFlux network
Andres Schmidt,, Chad Hanson, Stephen Chan, Beverly Law

Terrestrial ecosystem-atmosphere exchange of carbon, water vapor, and energy has been measured for over a decade at many sites globally. To minimize measurement and analysis errors, quality assurance data have been collected over short periods along-side tower instruments at AmeriFlux research sites. Theoretical and empirical error …


Journal: Journal of Geophysical Research - Biogeoscience, Volume 117 (G4): 1-15 (2012). DOI: 10.1029/2012JG002100 Sites:

Using Sonic Anemometer Temperature To Measure Sensible Heat Flux In Strong Winds
Burns, S. P., Horst, T. W., Jacobsen, L., Blanken, P. D., Monson, R. K.

Sonic anemometers simultaneously measure the turbulent fluctuations of vertical wind (w’) and sonic temperature (Ts’), and are commonly used to measure sensible heat flux (H). Our study examines 30-min heat fluxes measured with a Campbell Scientific CSAT3 sonic anemometer above a subalpine forest. We compared H calculated with Ts …


Journal: Atmospheric Measurement Techniques, Volume 5 (9): 2095-2111 (2012). DOI: 10.5194/amt-5-2095-2012 Sites: US-NR1


Terrestrial Biosphere Models Need Better Representation Of Vegetation Phenology: Results From The North American Carbon Program Site Synthesis
Richardson, A. D., Anderson, R. S., Arain, M. A., Barr, A. G., Bohrer, G., Chen, G., Chen, J. M., Ciais, P., Davis, K. J., Desai, A. R., Dietze, M. C., Dragoni, D., Garrity, S. R., Gough, C. M., Grant, R., Hollinger, D. Y., Margolis, H. A., McCaughey, H., Migliavacca, M., Monson, R. K., Munger, J. W., Poulter, B., Raczka, B. M., Ricciuto, D. M., Sahoo, A. K., Schaefer, K., Tian, H., Vargas, R., Verbeeck, H., Xiao, J., Xue, Y.


Journal: Global Change Biology, Volume 18 (2): 566-584 (2012). DOI: 10.1111/j.1365-2486.2011.02562.x Sites: CA-Oas, CA-Obs, CA-Ojp, CA-Qfo, US-Ha1, US-Ho1, US-MMS, US-NR1, US-UMB, US-WCr

The Impact Of Induced Drought On Transpiration And Growth In A Temperate Pine Plantation Forest
MacKay, S. L., Arain, M. A., Khomik, M., Brodeur, J. J., Schumacher, J., Hartmann, H., Peichl, M.

The effects of early growing season droughts on water and carbon balances in conifer forests are poorly understood. In this study, the response of canopy transpiration (Ec) and growth …


Journal: Hydrological Processes, Volume 26 (12): 1779-1791 (2012). DOI: 10.1002/hyp.9315 Sites: CA-TP4

Seasonal Patterns Of Carbon Dioxide And Water Fluxes In Three Representative Tundra Ecosystems In Northern Alaska
Euskirchen, E. S., Bret-Harte, M. S., Scott, G. J., Edgar, C., Shaver, G. R.

Understanding the carbon dioxide and water fluxes in the Arctic is essential for accurate assessment and prediction of the responses of these ecosystems to climate change. In the Arctic, there have been relatively few studies of net CO2, water, and energy exchange using micrometeorological methods due to the difficulty …


Journal: Ecosphere, Volume 3 (1): 1-19 (2012). DOI: 10.1890/ES11-00202.1 Sites: US-ICh, US-ICs, US-ICt

The role of permafrost on water exchange of a black spruce forest in Interior Alaska
Iwata, H., Harazono, Y., and Ueyama, M.


Journal: Agric. Forest Meteorol., Volume 161 (107-115): (2012). DOI: Sites: US-Uaf

Modeling Energy And Carbon Fluxes In A Heterogeneous Oak Woodland: A Three-Dimensional Approach
Kobayashi, H., Baldocchi, D. D., Ryu, Y., Chen, Q., Ma, S., Osuna, J. L., Ustin, S. L.

Most land surface and ecosystem models assume that a vegetated canopy can be abstracted as a turbid medium when such models compute mass, energy, and carbon exchange. However, those models fail to simulate radiation environments in heterogeneous landscapes. This study aims to couple a spatially explicit three-dimensional (3D) shortwave …


Journal: Agricultural And Forest Meteorology, Volume 152: 83-100 (2012). DOI: 10.1016/j.agrformet.2011.09.008 Sites: US-Ton

Carbon, Water, And Heat Flux Responses To Experimental Burning And Drought In A Tallgrass Prairie
Fischer, M. L., Torn, M. S., Billesbach, D. P., Doyle, G., Northup, B., Biraud, S. C.


Journal: Agricultural And Forest Meteorology, Volume 166-167: 169-174 (2012). DOI: 10.1016/j.agrformet.2012.07.011 Sites: US-ARb

Carbon Dioxide Exchange Over Multiple Temporal Scales In An Arid Shrub Ecosystem Near La Paz, Baja California Sur, Mexico
Bell, T. W., Menzer, O., Troyo-Diéquez, E., Oechel, W. C.

Arid environments represent 30% of the global terrestrial surface, but are largely under-represented in studies of ecosystem carbon flux. Less than 2% of all FLUXNET eddy covariance sites exist in a hot desert climate. Long-term datasets of these regions are vital for capturing the seasonal and interannual variability that occur …


Journal: Global Change Biology, Volume 18 (8): 2570-2582 (2012). DOI: 10.1111/j.1365-2486.2012.02720.x Sites: MX-Lpa