Dean E Anderson, PhD (Former Employee)
Science and Products
Estimates of energy partitioning, evapotranspiration, and net ecosystem exchange of CO2 for an urban lawn and a tallgrass prairie in the Denver metropolitan area under contrasting conditions Estimates of energy partitioning, evapotranspiration, and net ecosystem exchange of CO2 for an urban lawn and a tallgrass prairie in the Denver metropolitan area under contrasting conditions
Lawns as a landcover change substantially alter evapotranspiration, CO2, and energy exchanges and are of rising importance considering their spatial extent. We contrast eddy covariance (EC) flux measurements collected in the Denver, Colorado, USA metropolitan area in 2011 and 2012 over a lawn and a xeric tallgrass prairie. Close linkages between seasonal vegetation development, energy...
Authors
Thomas Thienelt, Dean E. Anderson
Atmospheric stability effects on wind fields and scalar mixing within and just above a subalpine forest in sloping terrain Atmospheric stability effects on wind fields and scalar mixing within and just above a subalpine forest in sloping terrain
Air temperature T a , specific humidity q, CO2 mole fraction χ c , and three-dimensional winds were measured in mountainous terrain from five tall towers within a 1 km region encompassing a wide range of canopy densities. The measurements were sorted by a bulk Richardson number Ri b . For stable conditions, we found vertical scalar differences developed over a “transition” region between...
Authors
Sean P. Burns, Jielun Sun, D.H. Lenschow, S.P. Oncley, B.B. Stephens, C. Yi, Dean E. Anderson, Jiawen Hu, Russell K. Monson
Canopy structure and atmospheric flows in relation to the δ13C of respired CO2 in a subalpine coniferous forest Canopy structure and atmospheric flows in relation to the δ13C of respired CO2 in a subalpine coniferous forest
Stable isotopes provide insight into ecosystem carbon cycling, plant physiological processes, atmospheric boundary-layer dynamics, and are useful for the integration of processes over multiple scales. Of particular interest is the carbon isotope content (δ13C) of nocturnal ecosystem-respired CO2 (δR). Recent advances in technology have made it possible to continuously examine the...
Authors
Sean M. Schaeffer, Dean E. Anderson, Sean P. Burns, Russell K. Monson, Jielun Sun, David R. Bowling
Airflows and turbulent flux measurements in mountainous terrain: Part 1. Canopy and local effects Airflows and turbulent flux measurements in mountainous terrain: Part 1. Canopy and local effects
We have studied the effects of local topography and canopy structure on turbulent flux measurements at a site located in mountainous terrain within a subalpine, coniferous forest. Our primary aim was to determine whether the complex terrain of the site affects the accuracy of eddy flux measurements from a practical perspective. We observed displacement heights, roughness lengths...
Authors
Andrew A. Turnipseed, Dean E. Anderson, Peter D. Blanken, William M. Baugh, Russell K. Monson
Eddy covariance measurement of CO2 flux to the atmosphere from a area of high volcanogenic emissions, Mammoth Mountain, California Eddy covariance measurement of CO2 flux to the atmosphere from a area of high volcanogenic emissions, Mammoth Mountain, California
Three pilot studies were performed to assess application of the eddy covariance micrometeorological method in the measurement of carbon dioxide (CO2) flux of volcanic origin. The selected study area is one of high diffuse CO2 emission on Mammoth Mountain, CA. Because terrain and source characteristics make this a complex setting for this type of measurement, added consideration was given...
Authors
Dean E. Anderson, Christopher D. Farrar
A Lagrangian stochastic model for aerial spray transport above an oak forest A Lagrangian stochastic model for aerial spray transport above an oak forest
An aerial spray droplets' transport model has been developed by applying recent advances in Lagrangian stochastic simulation of heavy particles. A two-dimensional Lagrangian stochastic model was adopted to simulate the spray droplet dispersion in atmospheric turbulence by adjusting the Lagrangian integral time scale along the drop trajectory. The other major physical processes affecting...
Authors
Yansen Wang, David R. Miller, Dean E. Anderson, Michael L. McManus
Science and Products
Estimates of energy partitioning, evapotranspiration, and net ecosystem exchange of CO2 for an urban lawn and a tallgrass prairie in the Denver metropolitan area under contrasting conditions Estimates of energy partitioning, evapotranspiration, and net ecosystem exchange of CO2 for an urban lawn and a tallgrass prairie in the Denver metropolitan area under contrasting conditions
Lawns as a landcover change substantially alter evapotranspiration, CO2, and energy exchanges and are of rising importance considering their spatial extent. We contrast eddy covariance (EC) flux measurements collected in the Denver, Colorado, USA metropolitan area in 2011 and 2012 over a lawn and a xeric tallgrass prairie. Close linkages between seasonal vegetation development, energy...
Authors
Thomas Thienelt, Dean E. Anderson
Atmospheric stability effects on wind fields and scalar mixing within and just above a subalpine forest in sloping terrain Atmospheric stability effects on wind fields and scalar mixing within and just above a subalpine forest in sloping terrain
Air temperature T a , specific humidity q, CO2 mole fraction χ c , and three-dimensional winds were measured in mountainous terrain from five tall towers within a 1 km region encompassing a wide range of canopy densities. The measurements were sorted by a bulk Richardson number Ri b . For stable conditions, we found vertical scalar differences developed over a “transition” region between...
Authors
Sean P. Burns, Jielun Sun, D.H. Lenschow, S.P. Oncley, B.B. Stephens, C. Yi, Dean E. Anderson, Jiawen Hu, Russell K. Monson
Canopy structure and atmospheric flows in relation to the δ13C of respired CO2 in a subalpine coniferous forest Canopy structure and atmospheric flows in relation to the δ13C of respired CO2 in a subalpine coniferous forest
Stable isotopes provide insight into ecosystem carbon cycling, plant physiological processes, atmospheric boundary-layer dynamics, and are useful for the integration of processes over multiple scales. Of particular interest is the carbon isotope content (δ13C) of nocturnal ecosystem-respired CO2 (δR). Recent advances in technology have made it possible to continuously examine the...
Authors
Sean M. Schaeffer, Dean E. Anderson, Sean P. Burns, Russell K. Monson, Jielun Sun, David R. Bowling
Airflows and turbulent flux measurements in mountainous terrain: Part 1. Canopy and local effects Airflows and turbulent flux measurements in mountainous terrain: Part 1. Canopy and local effects
We have studied the effects of local topography and canopy structure on turbulent flux measurements at a site located in mountainous terrain within a subalpine, coniferous forest. Our primary aim was to determine whether the complex terrain of the site affects the accuracy of eddy flux measurements from a practical perspective. We observed displacement heights, roughness lengths...
Authors
Andrew A. Turnipseed, Dean E. Anderson, Peter D. Blanken, William M. Baugh, Russell K. Monson
Eddy covariance measurement of CO2 flux to the atmosphere from a area of high volcanogenic emissions, Mammoth Mountain, California Eddy covariance measurement of CO2 flux to the atmosphere from a area of high volcanogenic emissions, Mammoth Mountain, California
Three pilot studies were performed to assess application of the eddy covariance micrometeorological method in the measurement of carbon dioxide (CO2) flux of volcanic origin. The selected study area is one of high diffuse CO2 emission on Mammoth Mountain, CA. Because terrain and source characteristics make this a complex setting for this type of measurement, added consideration was given...
Authors
Dean E. Anderson, Christopher D. Farrar
A Lagrangian stochastic model for aerial spray transport above an oak forest A Lagrangian stochastic model for aerial spray transport above an oak forest
An aerial spray droplets' transport model has been developed by applying recent advances in Lagrangian stochastic simulation of heavy particles. A two-dimensional Lagrangian stochastic model was adopted to simulate the spray droplet dispersion in atmospheric turbulence by adjusting the Lagrangian integral time scale along the drop trajectory. The other major physical processes affecting...
Authors
Yansen Wang, David R. Miller, Dean E. Anderson, Michael L. McManus