Publications

Publications Found: 1378

Evaluation Of Density Corrections To Methane Fluxes Measured By Open-Path Eddy Covariance Over Contrasting Landscapes
Chamberlain, S. D., Verfaillie, J., Eichelmann, E., Hemes, K. S., Baldocchi, D. D.

Corrections accounting for air density fluctuations due to heat and water vapour fluxes must be applied to the measurement of eddy-covariance fluxes when using open-path sensors. Experimental tests and ecosystem observations have demonstrated the important role density corrections play in accurately quantifying carbon dioxide ( CO …


Journal: Boundary-Layer Meteorology, Volume : (2017), ISBN . DOI: 10.1007/s10546-017-0275-9 Sites: US-Myb, US-Snd, US-Tw1, US-Tw3, US-Tw4, US-Twt

Inter-Annual Variability Of Net And Gross Ecosystem Carbon Fluxes: A Review
Baldocchi, D., Chu, H., Reichstein, M.

As the lifetime of regional flux networks approach twenty years, there is a growing number of papers that have published long term records (5 years or more) of net carbon fluxes between ecosystems and the atmosphere. Unanswered questions from this body of work are: 1) how variable are carbon fluxes on a year to year basis?; 2) what …


Journal: Agricultural And Forest Meteorology, Volume : (2017), ISBN . DOI: 10.1016/j.agrformet.2017.05.015 Sites:

Photosynthetic Responses To Temperature Across Leaf–Canopy–Ecosystem Scales: A 15-Year Study In A Californian Oak-Grass Savanna
Ma, S., Osuna, J. L., Verfaillie, J., Baldocchi, D. D.

Ecosystem CO2 fluxes measured with eddy-covariance techniques provide a new opportunity to retest functional responses of photosynthesis to abiotic factors at the ecosystem level, but examining the effects of one factor (e.g., temperature) on photosynthesis remains a challenge as other factors may confound under circumstances of …


Journal: Photosynthesis Research, Volume 132 (3): 277-291 (2017), ISBN . DOI: 10.1007/s11120-017-0388-5 Sites: US-Ton

The 2013 Flex—Us Airborne Campaign At The Parker Tract Loblolly Pine Plantation In North Carolina, Usa
Middleton, E., Rascher, U., Corp, L., Huemmrich, K., Cook, B., Noormets, A., Schickling, A., Pinto, F., Alonso, L., Damm, A., Guanter, L., Colombo, R., Campbell, P., Landis, D., Zhang, Q., Rossini, M., Schuettemeyer, D., Bianchi, R.

The first European Space Agency (ESA) and NASA collaboration in an airborne campaign to support ESA’s FLuorescence EXplorer (FLEX) mission was conducted in North Carolina, USA during September-October 2013 (FLEX-US 2013) at the Parker Tract Loblolly Pine (LP) Plantation (Plymouth, NC, USA). This campaign combined two unique airborne …


Journal: Remote Sensing, Volume 9 (6): 612-643 (2017), ISBN . DOI: 10.3390/rs9060612 Sites: US-NC2

Direct And Indirect Climate Change Effects On Carbon Dioxide Fluxes In A Thawing Boreal Forest-Wetland Landscape
Helbig, M., Chasmer, L. E., Desai, A. R., Kljun, N., Quinton, W. L., Sonnentag, O.

In the sporadic permafrost zone of northwestern Canada, boreal forest carbon dioxide (CO2 ) fluxes will be altered directly by climate change through changing meteorological forcing and indirectly through changes in landscape functioning associated with thaw-induced collapse-scar bog (‘wetland’) expansion. However, their combined …


Journal: Global Change Biology, Volume 23 (8): 3231-3248 (2017), ISBN . DOI: 10.1111/gcb.13638 Sites: CA-SCC

Multi-scale analyses of solar induced fluorescence and gross primary production
Wood, J.D., Griffis, T.J., Baker, J.M., Frankenberg, C., Verma, M., Yuen, K.


Journal: Geophysical Research Letters, Volume 44: 533-541 (2017), ISBN . DOI: doi: 10.1002/2016GL070775 Sites: US-KCM

Investigation of the N2O emission strength in the U. S. Corn Belt
Fu, C., Lee, X., Griffis, T.J., Dlugokencky, E.J., Andrews, A.E.

Nitrous oxide (N2O) has a high global warming potential and depletes stratospheric ozone. The U. S. Corn Belt plays an important role in the global anthropogenic N2O budget. To date, studies on local surface N2O emissions and the atmospheric N2O …


Journal: Atmospheric Research, Volume 194: 66-77 (2017), ISBN . DOI: 10.1016/j.atmosres.2017.04.027 Sites:

NDVI derived from near-infrared-enabled digital cameras: Applicability across different plant functional types
Filippa, G, Cremonesea, E, Migliavacca M., Galvagno, M., Sonnentag, O., Humphrey, E., Hufkens,K., Ryu, Y. Verfaillie, J., Morra di Cella, U., Richardson, A.

Time series of vegetation indices (e.g. normalized difference vegetation index [NDVI]) and color indices (e.g. green chromatic coordinate [GCC]) based on radiometric measurements are now available at different spatial and temporal scales ranging from weekly satellite observations to sub-hourly in situ measurements …


Journal: Agricultural and Forest Meteorology, Volume : (2017), ISBN . DOI: https://doi.org/10.1016/j.agrformet.2017.11.003 Sites: US-Ton, US-Var

Using Data From Landsat, Modis, Viirs And Phenocams To Monitor The Phenology Of California Oak/Grass Savanna And Open Grassland Across Spatial Scales
Liu, Y., Hill, M. J., Zhang, X., Wang, Z., Richardson, A. D., Hufkens, K., Filippa, G., Baldocchi, D. D., Ma, S., Verfaillie, J., Schaaf, C. B.

tThe Mediterranean-type oak/grass savanna of California is composed of widely spaced oak trees withunderstory grasses. These savanna regions are interspersed with large areas of more open grasslands.The ability of remotely sensed data (with various spatial resolutions) to monitor the phenology in thesewater-limited oak/grass savannas …


Journal: Agricultural And Forest Meteorology, Volume 237-238: 311-325 (2017), ISBN . DOI: 10.1016/j.agrformet.2017.02.026 Sites: US-Ton, US-Var

Association With Pedogenic Iron And Aluminum: Effects On Soil Organic Carbon Storage And Stability In Four Temperate Forest Soils
Porras, R. C., Hicks Pries, C. E., McFarlane, K. J., Hanson, P. J., Torn, M. S.

Soil organic carbon (SOC) can be stabilized via association with iron (Fe) and aluminum (Al) minerals. Fe and Al can be strong predictors of SOC storage and turnover in soils with relatively high extractable metals content and moderately acidic to circumneutral pH. Here we test whether pedogenic Fe and Al influence SOC content and …


Journal: Biogeochemistry, Volume 133 (3): 333-345 (2017), ISBN . DOI: 10.1007/s10533-017-0337-6 Sites: US-Bar, US-Ha1, US-MOz, US-UMB