Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

On the surface energy balance closure at different temporal scales

Journal Article · · Agricultural and Forest Meteorology
 [1];  [2];  [3];  [4];  [4];  [4];  [2];  [3]
  1. NOAA Earth System Research Lab., Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States); OSTI
  2. NOAA Earth System Research Lab., Boulder, CO (United States)
  3. NOAA Earth System Research Lab., Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
  4. Univ. of Notre Dame, IN (United States)

Measurements of the surface energy fluxes (turbulent and radiative) and other ancillary atmospheric/soil parameters made in the Columbia River Basin (Oregon) in an area of complex terrain during a 10-month long portion of the second Wind Forecast Improvement Project (WFIP 2) field campaign are used to study the surface energy budget (SEB) and surface fluxes over different temporal scales. This study analyzes and discusses SEB closure based on half-hourly, daily, monthly, seasonal, and sub-annual (~10-month) temporal averages. The data were collected over all four seasons for different states of the underlying ground surface (dry, wet, and frozen). Our half-hourly direct measurements of energy balance show that the sum of the turbulent sensible and latent heat fluxes systematically underestimate positive net radiation by around 20–30% during daytime and overestimate negative net radiation at night. This imbalance of the surface energy budget is comparable to other terrestrial sites. However, on average, the residual energy imbalance is significantly reduced at daily, weekly, and monthly averaging timescales, and moreover, the SEB can be closed for this site within reasonable limits on seasonal and sub-annual timescales (311-day averaging for the entire field campaign dataset). Increasing the averaging time to daily and longer time intervals substantially reduces the ground heat flux and storage terms, because energy locally entering the soil, air column, and vegetation in the morning is released in the afternoon and evening. Averaging on daily to sub-annual timescales also reduces random instrumental measurement errors and other uncertainties as well as smooths out a hysteresis effect (phase lag) in the SEB relationship between different components. This study shows that SEB closure is better for dry soils compared to wet soils and the statistical dependence of the turbulent fluxes and net radiation for freezing soil surfaces appears weak, if not non-existent, apparently due to lack of the latent heat of fusion term in the traditional SEB equation.

Research Organization:
National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office
Grant/Contract Number:
EE0007605
OSTI ID:
1799309
Alternate ID(s):
OSTI ID: 1632713
Journal Information:
Agricultural and Forest Meteorology, Journal Name: Agricultural and Forest Meteorology Vol. 281; ISSN 0168-1923
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (49)

Evaluation of the surface energy budget equation with experimental data and the ECMWF model in the Ebro Valley journal February 2015
A novel approach to evaluate soil heat flux calculation: An analytical review of nine methods: Soil Heat Flux Calculation journal July 2017
Revisiting the hysteresis effect in surface energy budgets: HYSTERESIS EFFECT IN ENERGY BUDGETS journal May 2013
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
Seasonal and latitudinal variations of surface fluxes at two Arctic terrestrial sites journal November 2017
Evaluation of six parameterization approaches for the ground heat flux journal July 2006
Stable Boundary-Layer Scaling Regimes: The Sheba Data journal August 2005
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
Extension of the Averaging Time in Eddy-Covariance Measurements and Its Effect on the Energy Balance Closure journal April 2014
Advances in Air–Sea $$\hbox {CO}_2$$ CO 2 Flux Measurement by Eddy Correlation journal April 2014
A temperature prediction-correction method for estimating surface soil heat flux from soil temperature and moisture data journal May 2008
Soil heat flux and day time surface energy balance closure at astronomical observatory, Thiruvananthapuram, south Kerala journal June 2014
Analytical treatment of the relationships between soil heat flux/net radiation ratio and vegetation indices journal December 1993
Estimation of the soil heat flux/net radiation ratio from spectral data journal February 1990
Validation of eddy flux measurements above the understorey of a pine forest journal February 2001
Energy balance closure at FLUXNET sites journal December 2002
Surface energy balance of a corn residue-covered field journal February 1998
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
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
Time dependency of eddy covariance site energy balance journal February 2018
A satellite-based hybrid algorithm to determine the Priestley–Taylor parameter for global terrestrial latent heat flux estimation across multiple biomes journal August 2015
Sonic Anemometer Tilt Correction Algorithms journal April 2001
A Re-Evaluation of Long-Term Flux Measurement Techniques Part I: Averaging and Coordinate Rotation journal April 2003
Earlier spring snowmelt in northern Alaska as an indicator of climate change: EARLY SNOWMELT AS AN INDICATOR OF CLIMATE CHANGE journal May 2002
Impact of wave phase difference between soil surface heat flux and soil surface temperature on soil surface energy balance closure journal January 2010
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
Non-closure of the surface energy balance explained by phase difference between vertical velocity and scalars of large atmospheric eddies journal March 2017
Impact of post-field data processing on eddy covariance flux estimates and energy balance closure [Impact of post-field data processing on eddy covariance flux estimates and energy balance closure] journal December 2006
Parametrization of turbulent fluxes over inhomogeneous landscapes journal December 2008
Workshop on Instrumental and Methodical Problems of Land Surface Flux Measurements journal July 1995
On the Assessment of Surface Heat Flux and Evaporation Using Large-Scale Parameters journal February 1972
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
The Energy Balance Closure Problem: an Overview journal September 2008
An Introduction to flux Measurements in Difficult Conditions journal September 2008
Coupling soil-vegetationatmosphere- transfer model with energy balance model for estimating energy and water vapor fluxes over an olive grove in a semi-arid region journal May 2012
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

Cited By (1)


Similar Records

A Hybrid Bulk Algorithm to Predict Turbulent Fluxes over Dry and Wet Bare Soils
Journal Article · Fri Apr 01 00:00:00 EDT 2022 · Journal of Applied Meteorology and Climatology · OSTI ID:1980907

Quantifying the impacts of atmospheric rivers on the surface energy budget of the Arctic based on reanalysis
Journal Article · Sun Oct 19 20:00:00 EDT 2025 · The Cryosphere (Online) · OSTI ID:3000081

sebs (b1)
Dataset · Fri Oct 01 00:00:00 EDT 2010 · OSTI ID:1984921