Publications

Publications Found: 1378

Estimating Actual Evapotranspiration From Stony-Soils In Montane Ecosystems
Parajuli, K., Jones, S. B., Tarboton, D. G., Flerchinger, G. N., Hipps, L. E., Allen, L. N., Seyfried, M. S.


Journal: Agricultural And Forest Meteorology, Volume 265: 183-194 (2019), ISBN . DOI: 10.1016/j.agrformet.2018.11.019 Sites: US-Rls

Carbon dioxide balance in early-successional forests after forest fires in interior Alaska
Masahito UEYAMA, Hiroki IWATA, Hirohiko NAGANO, Narumi TAHARA, Chie IWAMA, Yoshinobu HARAZONO

Fire is the major disturbance in North American boreal forests, and is thought to be the most important process that determines the carbon balance in North American boreal forests. This study conducted four years of tower flux measurements in a burned ecosystem from one to four years after a fire, and nine years of measurements in …


Journal: Agricultural and Forest Meteorology, Volume 275: 196-207 (2019), ISBN . DOI: Sites: US-Fcr, US-Rpf

Recovering Evapotranspiration Trends From Biased CMIP5 Simulations And Sensitivity To Changing Climate Over North America
Sullivan, R. C., Kotamarthi, V. R., Feng, Y.

Future projections of evapotranspiration (ET) are of critical importance for agricultural and freshwater management and for predicting land–atmosphere feedbacks on the climate system. However, ET from phase 5 of the Coupled Model Intercomparison Project (CMIP5) simulations exhibits substantial biases, bolstering little confidence …


Journal: Journal Of Hydrometeorology, Volume 20 (8): 1619-1633 (2019), ISBN . DOI: 10.1175/JHM-D-18-0259.1 Sites: US-AR1, US-AR2, US-ARM, US-Blo, US-Cop, US-GLE, US-Ha1, US-Los, US-Me2, US-Me6, US-MMS, US-Myb, US-Ne1, US-Ne2, US-Ne3, US-NR1, US-ORv, US-PFa, US-SRG, US-SRM, US-Syv, US-Ton, US-Tw1, US-Tw2, US-Tw3, US-Tw4, US-Twt, US-UMB, US-UMd, US-Var, US-WCr, US-Whs, US-Wkg

Mechanistic Evidence For Tracking The Seasonality Of Photosynthesis With Solar-Induced Fluorescence
Magney, T. S., Bowling, D. R., Logan, B. A., Grossmann, K., Stutz, J., Blanken, P. D., Burns, S. P., Cheng, R., Garcia, M. A., Kӧhler, P., Lopez, S., Parazoo, N. C., Raczka, B., Schimel, D., Frankenberg, C.

Northern hemisphere evergreen forests assimilate a significant fraction of global atmospheric CO2 but monitoring large-scale changes in gross primary production (GPP) in these systems is challenging. Recent advances in remote sensing allow the detection of solar-induced chlorophyll fluorescence (SIF) emission from vegetation, which …


Journal: Proceedings Of The National Academy Of Sciences, Volume : 201900278 (2019), ISBN . DOI: 10.1073/pnas.1900278116 Sites: US-NR1

The Impact Of Biomass Heat Storage On The Canopy Energy Balance And Atmospheric Stability In The Community Land Model
Swenson, S. C., Burns, S. P., Lawrence, D. M.

Atmospheric models used for weather prediction and future climate projections rely on land models to calculate surface boundary conditions. Observations of near‐surface states and fluxes made at flux measurement sites provide valuable data with which to assess the quality of simulated lower boundary conditions. A previous assessment …


Journal: Journal Of Advances In Modeling Earth Systems, Volume 11 (1): 83-98 (2019), ISBN . DOI: 10.1029/2018MS001476 Sites: US-NR1

Cushion Bogs Are Stronger Carbon Dioxide Net Sinks Than Moss-Dominated Bogs As Revealed By Eddy Covariance Measurements On Tierra Del Fuego, Argentina
Holl, D., Pancotto, V., Heger, A., Camargo, S. J., Kutzbach, L.

The near-pristine bog ecosystems of Tierra del Fuego in southernmost Patagonia have so far not been studied in terms of their current carbon dioxide (CO2) sink strength. CO2 flux data from Southern Hemisphere peatlands are scarce in general. In this study, we present CO2 net ecosystem exchange (NEE) fluxes from two Fuegian bog ecosystems …


Journal: Biogeosciences, Volume 16 (17): 3397-3423 (2019), ISBN . DOI: 10.5194/bg-16-3397-2019 Sites: AR-TF1, AR-TF2

The Eddy-Covariance Storage Term In Air: Consistent Community Resources Improve Flux Measurement Reliability
Xu, K., Pingintha-Durden, N., Luo, H., Durden, D., Sturtevant, C., Desai, A. R., Florian, C., Metzger, S.

In the widely-used eddy-covariance (EC) technique, it is often assumed that the air storage term, i.e. the change of below-turbulence-sensor scalar abundance, is negligible or comprises a small part of net surface-atmosphere exchange (NSAE). Previous studies have demonstrated that this assumption is often violated where non-turbulent …


Journal: Agricultural And Forest Meteorology, Volume 279: 107734 (2019), ISBN . DOI: 10.1016/j.agrformet.2019.107734 Sites: US-xAB, US-xBR, US-xUN

Relationships Between Methane and Carbon Dioxide Fluxes in a Temperate Cattail‐Dominated Freshwater Wetland
Villa, J., Ju, Y., Vines, C., Rey-Sanchez, C., Morin, T.H., Wrighton, K.C., Bohrer, G.

Wetlands are the most important natural source of methane (CH4) to the atmosphere, and there is still considerable uncertainty of CH4 flux and net carbon budgets of wetlands. This uncertainty is due in part to the complex role of wetland vegetation in controlling methane production, oxidation and transport, which challenge the modeling …


Journal: Journal of Geophysical Research-Biogeosciences, Volume 124 (7): 2076-2089 (2019), ISBN . DOI: 10.1029/2019JG005167 Sites: US-OWC

Gap‐Filling Approaches For Eddy Covariance Methane Fluxes: A Comparison Of Three Machine Learning Algorithms And A Traditional Method With Principal Component Analysis
Kim, Y., Johnson, M. S., Knox, S. H., Black, T. A., Dalmagro, H. J., Kang, M., Kim, J., Baldocchi, D.

Methane flux (FCH4 ) measurements using the eddy covariance technique have increased over the past decade. FCH4 measurements commonly include data gaps, as is the case with CO2 and energy fluxes. However, gap-filling FCH4 data are more challenging than other fluxes due to its unique characteristics including multidriver dependency, …


Journal: Global Change Biology, Volume : (2019), ISBN . DOI: 10.1111/gcb.14845 Sites: US-Twt

How Eddy Covariance Flux Measurements Have Contributed To Our Understanding Of Global Change Biology
Baldocchi, D. D.

A global network of long-term carbon and water flux measurements has existed since the late 1990s. With its representative sampling of the terrestrial biosphere’s climate and ecological spaces, this network is providing background information and direct measurements on how ecosystem metabolism responds to environmental and biological …


Journal: Global Change Biology, Volume : (2019), ISBN . DOI: 10.1111/gcb.14807 Sites: