Publications

Publications Found: 1437

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). DOI: 10.1016/j.agrformet.2017.02.026 Sites: US-Ton, US-Var

Using digital camera and Landsat imagery with eddy covariance data to model gross primary production in restored wetlands
Knox, Sara Helen Dronova, Iryna Sturtevant, Cove Oikawa, Patricia Y. Matthes, Jaclyn Hatala Verfaillie, Joseph Baldocchi, Dennis

Wetlands have the ability to accumulate large amounts of carbon (C), and therefore wetland restoration has been proposed as a means of sequestering atmospheric carbon dioxide (CO2) to help mitigate climate change. There is a growing interest in using the C services of wetlands to help reduce habitat loss and finance restoration projects. …


Journal: Agricultural and Forest Meteorology, Volume 237–238: 233-245 (2017). DOI: http://dx.doi.org/10.1016/j.agrformet.2017.02.020 Sites: US-Myb, US-Tw1

Methanogenesis In Oxygenated Soils Is A Substantial Fraction Of Wetland Methane Emissions
Angle, J. C., Morin, T. H., Solden, L. M., Narrowe, A. B., Smith, G. J., Borton, M. A., Rey-Sanchez, C., Daly, R. A., Mirfenderesgi, G., Hoyt, D. W., Riley, W. J., Miller, C. S., Bohrer, G., Wrighton, K. C.

The current paradigm, widely incorporated in soil biogeochemical models, is that microbial methanogenesis can only occur in anoxic habitats. In contrast, here we show clear geochemical and biological evidence for methane production in well-oxygenated soils of a freshwater wetland. A comparison of oxic to anoxic soils reveal up to …


Journal: Nature Communications, Volume 8 (1): 1567 (2017). DOI: 10.1038/s41467-017-01753-4 Sites: US-OWC

Dynamics Of Canopy Stomatal Conductance, Transpiration, And Evaporation In A Temperate Deciduous Forest, Validated By Carbonyl Sulfide Uptake
Wehr, R., Commane, R., Munger, J. W., McManus, J. B., Nelson, D. D., Zahniser, M. S., Saleska, S. R., Wofsy, S. C.

Stomatal conductance influences both photosynthesis and transpiration, thereby coupling the carbon and water cycles and affecting surface-atmosphere energy exchange. The environmental response of stomatal conductance has been measured mainly on the leaf scale, and theoretical canopy models are relied on to upscale stomatal conductance …


Journal: Biogeosciences, Volume 14 (2): 389-401 (2017). DOI: 10.5194/bg-14-389-2017 Sites: US-Ha1

Climate Controls Over Ecosystem Metabolism: Insights From A Fifteen-Year Inductive Artificial Neural Network Synthesis For A Subalpine Forest
Albert, L. P., Keenan, T. F., Burns, S. P., Huxman, T. E., Monson, R. K.


Journal: Oecologia, Volume 184 (1): 25-41 (2017). DOI: 10.1007/s00442-017-3853-0 Sites: US-NR1

A Novel Approach To Evaluate Soil Heat Flux Calculation: An Analytical Review Of Nine Methods
Gao, Z., Russell, E. S., Missik, J. E., Huang, M., Chen, X., Strickland, C. E., Clayton, R., Arntzen, E., Ma, Y., Liu, H.


Journal: Journal Of Geophysical Research: Atmospheres, Volume 122 (13): 6934-6949 (2017). DOI: 10.1002/2017JD027160 Sites: US-Hn1

A Numerical Case Study Of The Implications Of Secondary Circulations To The Interpretation Of Eddy-Covariance Measurements Over Small Lakes
Kenny, W. T., Bohrer, G., Morin, T. H., Vogel, C. S., Matheny, A. M., Desai, A. R.


Journal: Boundary-Layer Meteorology, Volume 165 (2): 311-332 (2017). DOI: 10.1007/s10546-017-0268-8 Sites: US-UM3, US-UMB

Co2 Exchange And Evapotranspiration Across Dryland Ecosystems Of Southwestern North America
Biederman, J. A., Scott, R. L., Bell, T. W., Bowling, D. R., Dore, S., Garatuza-Payan, J., Kolb, T. E., Krishnan, P., Krofcheck, D. J., Litvak, M. E., Maurer, G. E., Meyers, T. P., Oechel, W. C., Papuga, S. A., Ponce-Campos, G. E., Rodriguez, J. C., Smith, W. K., Vargas, R., Watts, C. J., Yepez, E. A., Goulden, M. L.

Global-scale studies suggest that dryland ecosystems dominate an increasing trend in the magnitude and interannual variability of the land CO2 sink. However, such analyses are poorly constrained by measured CO2 exchange in drylands. Here we address this observation gap with eddy covariance data from 25 sites in the water-limited …


Journal: Global Change Biology, Volume 23 (10): 4204-4221 (2017). DOI: 10.1111/gcb.13686 Sites: US-SRG, US-SRM, US-Whs, US-Wkg

Arctic Regional Methane Fluxes By Ecotope As Derived Using Eddy Covariance From A Low-Flying Aircraft
Sayres, D. S., Dobosy, R., Healy, C., Dumas, E., Kochendorfer, J., Munster, J., Wilkerson, J., Baker, B., Anderson, J. G.

The Arctic terrestrial and sub-sea permafrost region contains approximately 30 % of the global carbon stock, and therefore understanding Arctic methane emissions and how they might change with a changing climate is important for quantifying the global methane budget and understanding its growth in the atmosphere. Here we present …


Journal: Atmospheric Chemistry And Physics, Volume 17 (13): 8619-8633 (2017). DOI: https://doi.org/10.5194/acp-17-8619-2017 Sites: US-Fo1

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). DOI: 10.1002/ppp.1935 Sites: US-Prr