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A Hybrid Bulk Algorithm to Predict Turbulent Fluxes over Dry and Wet Bare Soils

Journal Article · · Journal of Applied Meteorology and Climatology
 [1];  [2];  [3];  [4];  [5];  [4];  [2];  [3]
  1. National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States). Physical Sciences Laboratory; Univ. of Colorado, Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
  2. National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States). Physical Sciences Laboratory
  3. National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States). Physical Sciences Laboratory; Univ. of Colorado, Boulder, CO (United States)
  4. University of Notre Dame, IN (United States)
  5. University of Notre Dame, IN (United States); Univ. of Bologna (Italy)
Measurements made in the Columbia River basin (Oregon) in an area of irregular terrain during the second Wind Forecast Improvement Project (WFIP2) field campaign are used to develop an optimized hybrid bulk algorithm to predict the surface turbulent fluxes from readily measured or modeled quantities over dry and wet bare or lightly vegetated soil surfaces. The hybrid (synthetic) algorithm combines (i) an aerodynamic method for turbulent flow, which is based on the transfer coefficients (drag coefficient and Stanton number), roughness lengths, and Monin–Obukhov similarity; and (ii) a modified Priestley–Taylor (P-T) algorithm with physically based ecophysiological constraints, which is essentially based on the surface energy budget (SEB) equation. Soil heat flux in the latter case was estimated from measurements of soil temperature and soil moisture. In the framework of the hybrid algorithm, bulk estimates of the momentum flux and the sensible heat flux are derived from a traditional aerodynamic approach, whereas the latent heat flux (or moisture flux) is evaluated from a modified P-T model. Direct measurements of the surface fluxes (turbulent and radiative) and other ancillary atmospheric/soil parameters made during WFIP2 for different soil conditions (dry and wet) are used to optimize and tune the hybrid bulk algorithm. The bulk flux estimates are validated against the measured eddy-covariance fluxes. We also discuss the SEB closure over dry and wet surfaces at various time scales based on the modeled and measured fluxes. Although this bulk flux algorithm is optimized for the data collected during the WFIP2, a hybrid approach can be used for similar flux-tower sites and field campaigns.
Research Organization:
National Oceanic and Atmospheric Administration (NOAA), Silver Spring, MD (United States). Office of Oceanic and Atmospheric Research
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Oceanic and Atmospheric Administration (NOAA)
Grant/Contract Number:
EE0007605
OSTI ID:
1980907
Journal Information:
Journal of Applied Meteorology and Climatology, Journal Name: Journal of Applied Meteorology and Climatology Journal Issue: 4 Vol. 61; ISSN 1558-8424
Publisher:
American Meteorological SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (63)

Evaluation of the surface energy budget equation with experimental data and the ECMWF model in the Ebro Valley journal February 2015
On the variability of the Priestley‐Taylor coefficient over water bodies journal January 2016
A novel approach to evaluate soil heat flux calculation: An analytical review of nine methods: Soil Heat Flux Calculation journal July 2017
Similarity theory based on the Dougherty-Ozmidov length scale: Similarity Theory Based on the Dougherty-Ozmidov Length Scale
  • Grachev, Andrey A.; Andreas, Edgar L.; Fairall, Christopher W.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 141, Issue 690 https://doi.org/10.1002/qj.2488
journal December 2014
Surface-layer description under free-convection conditions journal April 1993
Parametrizing turbulent exchange over summer sea ice and the marginal ice zone
  • Andreas, Edgar L.; Horst, Thomas W.; Grachev, Andrey A.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 136, Issue 649 https://doi.org/10.1002/qj.618
journal April 2010
Minimum friction velocity and heat transfer in the rough surface layer of a convective boundary layer journal September 1988
The characteristics of turbulent velocity components in the surface layer under convective conditions journal May 1977
A note on free convection journal April 1973
Evaluation of six parameterization approaches for the ground heat flux journal July 2006
The energy balance experiment EBEX-2000. Part II: Intercomparison of eddy-covariance sensors and post-field data processing methods journal November 2006
The Energy Balance Experiment EBEX-2000. Part I: overview and energy balance journal March 2007
Towards Closing the Surface Energy Budget of a Mid-latitude Grassland journal July 2007
Advances in Air–Sea $$\hbox {CO}_2$$ CO 2 Flux Measurement by Eddy Correlation journal April 2014
Hybrid Profile–Gradient Approaches for the Estimation of Surface Fluxes journal September 2018
Surface-Energy-Balance Closure over Land: A Review journal May 2020
Evapotranspiration over Land from a Boundary-Layer Meteorology Perspective journal August 2020
The Persistent Challenge of Surface Heterogeneity in Boundary-Layer Meteorology: A Review journal July 2020
Analytical treatment of the relationships between soil heat flux/net radiation ratio and vegetation indices journal December 1993
Energy balance closure at FLUXNET sites journal December 2002
Limitations and improvements of the energy balance closure with reference to experimental data measured over a maize field journal October 2014
An assessment of storage terms in the surface energy balance of maize and soybean journal September 2004
The Priestley–Taylor parameter and the decoupling factor for estimating reference evapotranspiration journal October 2004
Sensitivity analysis for two ground heat flux calculation approaches journal October 2005
Analysis of short-term closure of the surface energy balance above short vegetation journal January 2008
Reflections on the surface energy imbalance problem journal April 2012
A data-driven analysis of energy balance closure across FLUXNET research sites: The role of landscape scale heterogeneity journal April 2013
MODIS-driven estimation of terrestrial latent heat flux in China based on a modified Priestley–Taylor algorithm journal April 2013
Developing a soil water index-based Priestley–Taylor algorithm for estimating evapotranspiration over East Asia and Australia journal December 2019
On the surface energy balance closure at different temporal scales journal February 2020
Global estimates of the land–atmosphere water flux based on monthly AVHRR and ISLSCP-II data, validated at 16 FLUXNET sites journal March 2008
A satellite-based hybrid algorithm to determine the Priestley–Taylor parameter for global terrestrial latent heat flux estimation across multiple biomes journal August 2015
A Theoretical Basis for the Priestley-Taylor Coefficient journal February 1997
Surface-Layer Scaling for the Convection-Induced Stress Regime journal June 1997
On the Determination of the Neutral Drag Coefficient in the Convective Boundary Layer journal February 1998
Sonic Anemometer Tilt Correction Algorithms journal April 2001
Turbulent fluxes and transfer of trace gases from ship-based measurements during TexAQS 2006 journal January 2011
A-posteriori analysis of surface energy budget closure to determine missed energy pathways: ANALYSIS OF SURFACE ENERGY BUDGET journal October 2012
Bulk parameterization of air-sea fluxes for Tropical Ocean-Global Atmosphere Coupled-Ocean Atmosphere Response Experiment journal February 1996
Sea surface drag coefficients in the Risø Air Sea Experiment journal June 1996
Revised Coefficients for Priestley-Taylor and Makkink-Hansen Equations for Estimating Daily Reference Evapotranspiration journal October 2013
A comparison among different modified Priestley and Taylor equations to calculate actual evapotranspiration with MODIS data journal March 2011
Non-closure of the surface energy balance explained by phase difference between vertical velocity and scalars of large atmospheric eddies journal March 2017
Bulk Parameterization of Air–Sea Fluxes: Updates and Verification for the COARE Algorithm journal February 2003
A Simple Parameterization of the Surface Fluxes of Sensible and Latent Heat During Daytime Compared with the Penman-Monteith Concept journal November 1982
A Model for the Priestley-Taylor Parameter α journal April 1983
A Parameterization of Evaporation from Bare Soil Surfaces journal May 1990
Convective Velocity and Temperature Scales for the Unstable Planetary Boundary Layer and for Rayleigh Convection journal November 1970
On the Assessment of Surface Heat Flux and Evaporation Using Large-Scale Parameters journal February 1972
Parameterizing Turbulent Exchange over Sea Ice in Winter journal February 2010
The Second Wind Forecast Improvement Project (WFIP2): Observational Field Campaign journal September 2019
The Second Wind Forecast Improvement Project (WFIP2): General Overview journal September 2019
Improving Wind Energy Forecasting through Numerical Weather Prediction Model Development journal November 2019
Considerations on minimum friction velocity journal April 2003
The influence of large convective eddies on the surface-layer turbulence journal July 2006
The Energy Balance Closure Problem: an Overview journal September 2008
Validation and Application of the Modified Satellite-Based Priestley-Taylor Algorithm for Mapping Terrestrial Evapotranspiration journal January 2014
A Review of Current Methodologies for Regional Evapotranspiration Estimation from Remotely Sensed Data journal May 2009
Some aspects of the energy balance closure problem journal January 2006
Determination of oceanic ozone deposition by ship-borne eddy covariance flux measurements journal January 2010
Impact of model improvements on 80 m wind speeds during the second Wind Forecast Improvement Project (WFIP2) journal January 2019
Analysing surface energy balance closure and partitioning over a semi-arid savanna FLUXNET site in Skukuza, Kruger National Park, South Africa journal January 2017
The Surface Energy Balance System (SEBS) for estimation of turbulent heat fluxes journal January 2002

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