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Topography-Induced TKE Budget Behavior Over an Amazon Forest

Journal Article · · Boundary-Layer Meteorology
 [1];  [1];  [2];  [3];  [2]
  1. Federal University of Paraná, Curitiba (Brazil)
  2. University of California, Los Angeles, CA (United States)
  3. Federal Institute of Pará, Belém (Brazil)
+ Show Author Affiliations
Data from three different heights (35, 50 and 81 m) of one of the ATTO Project towers in the Amazon forest were used to calculate the TKE (turbulence kinetic energy) budget and some other statistics within the RSL (roughness sublayer). The statistical analyses were carried out for unstable and stable cases. The vertical transport and the vertical advection terms do not explain the imbalances found in the TKE budget, highlighting the impor- tance of horizontal terms in complex terrain. Indeed, patterns independent of the time of day were found for vertical transport, horizontal and vertical velocity skewness, the mean vertical component velocity, and momentum and vertical TKE flux. Here, the highest values of mean vertical velocity were observed from the direction where there is a valley near the tower, which may indicate a topographical effect. Monin-Obukhov Similarity Theory (MOST) predictions for the mean velocity gradient, strictly applicable only in the inertial sublayer (ISL), gave reasonable predictions at 35 and 50 m, but dimensionless dissipation rates displayed large scatter. At 81 m, there were clear deviations from MOST for the two functions, disclosing the effect of topography. In addition, a neutral LES (large-eddy simu- lation) study showed good agreement with tower data for the same general wind direction.
Research Organization:
University of California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0022072
OSTI ID:
3003459
Alternate ID(s):
OSTI ID: 2584033
Journal Information:
Boundary-Layer Meteorology, Journal Name: Boundary-Layer Meteorology Journal Issue: 8 Vol. 191; ISSN 0006-8314; ISSN 1573-1472
Publisher:
Springer Science and Business Media LLCCopyright Statement
Country of Publication:
United States
Language:
English

References (57)

Turbulence regimes and the validity of similarity theory in the stable boundary layer over complex terrain of the Loess Plateau, China: Turbulence in the stable boundary layer journal May 2014
First-order turbulence closure for modelling complex canopy flows: First-Order Turbulence Closure for Canopy Flows journal September 2015
Turbulence kinetic energy budget in the stable boundary layer over a heterogeneous surface journal April 2018
Critical flux Richardson number for Kolmogorov turbulence enabled by TKE transport
  • Freire, Livia S.; Chamecki, Marcelo; Bou‐Zeid, Elie
  • Quarterly Journal of the Royal Meteorological Society, Vol. 145, Issue 721 https://doi.org/10.1002/qj.3511
journal March 2019
Effects of topography on in‐canopy transport of gases emitted within dense forests
  • Chen, Bicheng; Chamecki, Marcelo; Katul, Gabriel G.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 145, Issue 722 https://doi.org/10.1002/qj.3546
journal April 2019
Flux profile relations above tall vegetation journal January 1978
Fundamentals of Boundary-Layer Meteorology book January 2018
An Introduction to Boundary Layer Meteorology book January 1988
Turbulent Transport in Flexible Plant Canopies book December 1984
Evaporation into the Atmosphere: Theory, History and Applications book January 1982
Non-dimensional wind and temperature profiles in the atmospheric surface layer: A re-evaluation journal January 1988
On the downward transport of turbulent kinetic energy in the surface layer over plant canopies journal June 1978
Vertical transport of turbulent kinetic energy in the surface layer over a paddy field journal November 1977
Averaging procedures for flow within vegetation canopies journal January 1982
An eddy correlation technique with extended applicability to non-simple terrain journal May 1988
A review of flux-profile relationships journal November 1974
Large-eddy simulation of turbulent flow above and within a forest journal October 1992
Flux-profile Relationships for Wind Speed and Temperature in the Stable Atmospheric Boundary Layer journal March 2005
The Influence of Hilly Terrain on Canopy-Atmosphere Carbon Dioxide Exchange journal January 2006
Corrections to Inertial-Range Power Spectra Measured by Csat3 and Solent Sonic Anemometers,1. Path-Averaging Errors journal May 2006
A simple unified theory for flow in the canopy and roughness sublayer journal March 2007
The Budget of Turbulent Kinetic Energy in the Urban Roughness Sublayer journal February 2009
Correction of a Non-orthogonal, Three-Component Sonic Anemometer for Flow Distortion by Transducer Shadowing journal February 2015
Adapting Tilt Corrections and the Governing Flow Equations for Steep, Fully Three-Dimensional, Mountainous Terrain journal July 2015
Air-Parcel Residence Times Within Forest Canopies journal June 2017
Daytime Temporal Variation of Surface-Layer Parameters and Turbulence Kinetic Energy Budget in Topographically Complex Terrain Around Umiam, India journal April 2019
Effects of Path Averaging in a Sonic Anemometer on the Estimation of Turbulence-Kinetic-Energy Dissipation Rates journal June 2019
The Relaxed Eddy Accumulation Method Over the Amazon Forest: The Importance of Flux Strength on Individual and Aggregated Flux Estimates journal October 2023
Flux-gradient relationships above tall plant canopies journal March 1992
Flux-profile relationships over a boreal forest — roughness sublayer corrections journal December 1999
Flux-variance and flux-gradient relationships in the roughness sublayer over the Amazon forest journal May 2017
Integrating continuous atmospheric boundary layer and tower-based flux measurements to advance understanding of land-atmosphere interactions journal September 2021
Increasing complexity in Aerodynamic Gradient flux calculations inside the roughness sublayer applied on a two-year dataset journal August 2024
Turbulence in the Atmosphere book January 2010
Turbulent kinetic energy budgets from a large-eddy simulation of airflow above and within a forest canopy journal July 1997
Spatial Variability of Turbulent Fluxes in the Roughness Sublayer of an Even-Aged Pine Forest journal October 1999
Sonic Anemometer Tilt Correction Algorithms journal April 2001
Canopy Architecture and Turbulence Structure in a Coniferous Forest journal July 2003
The Effect of Vegetation Density on Canopy Sub-Layer Turbulence journal June 2004
Surface length scales and shear stress: Implications for land-atmosphere interaction over complex terrain journal July 1999
Single level turbulence measurements to determine roughness parameters of complex terrain journal June 2003
A TKE‐Based Framework for Studying Disturbed Atmospheric Surface Layer Flows and Application to Vertical Velocity Variance Over Canopies journal July 2018
Is There a Classical Inertial Sublayer Over the Amazon Forest? journal May 2019
Effects of Gentle Topography on Forest‐Atmosphere Gas Exchanges and Implications for Eddy‐Covariance Measurements journal June 2020
A scale-dependent Lagrangian dynamic model for large eddy simulation of complex turbulent flows journal February 2005
Adjustments to the law of the wall above an Amazon forest explained by a spectral link journal February 2023
Robust Locally Weighted Regression and Smoothing Scatterplots journal December 1979
Locally Weighted Regression: An Approach to Regression Analysis by Local Fitting journal September 1988
Atmospheric Boundary Layer Flows: Their Structure and Measurement book March 1994
Turbulence in and above Plant Canopies journal January 1981
The Budgets of Turbulent Kinetic Energy and Temperature Variance in the Atmospheric Surface Layer journal March 1971
Effects of Vegetation and Topography on the Boundary Layer Structure above the Amazon Forest journal August 2020
Turbulent Kinetic Energy Budgets over Gentle Topography Covered by Forests journal January 2023
All Sonic Anemometers Need to Correct for Transducer and Structural Shadowing in Their Velocity Measurements* journal January 2016
Scalar turbulent behavior in the roughness sublayer of an Amazonian forest journal January 2016
Understanding nighttime methane signals at the Amazon Tall Tower Observatory (ATTO) journal June 2020
Intra- and interannual changes in isoprene emission from central Amazonia journal July 2023

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Related Subjects

ATTO project
Complex terrain
Large-eddy simulation
Roughness sublayer
Turbulence kinetic energy