Retrieval of Model Grid-Scale Heat Capacity Using Geostationary Satellite Products. Part I: First Case-Study Application

McNider, Richard T.; Lapenta, William M.; Pour‐Biazar, Arastoo; Jedlovec, Gary J.; Suggs, Ron; Pleim, Jonathan

doi:10.1175/jam2270.1

Cited by 24 publications

(19 citation statements)

References 47 publications

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“…Thermal coupling, as defined here, is a model concept; the thermal coupling needed for optimal performance depends on the model structure (McNider et al 2005). The significant differences in sensitivities found among models in this GABLS3 study are consistent with the conclusions of McNider et al (2012) that the modelled SBL is at present is uncertain and that the modelled trends in surface parameters should be viewed with caution.…”

Section: Discussionsupporting

confidence: 77%

The Third GABLS Intercomparison Case for Evaluation Studies of Boundary-Layer Models. Part B: Results and Process Understanding

Bosveld

Baas

Steeneveld

et al. 2014

Boundary-Layer Meteorol

106

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We describe and analyze the results of the third global energy and water cycle experiment atmospheric boundary layer Study intercomparison and evaluation study for F. C. Bosveld (B) · P. Baas · E. I. F. single-column models. Each of the nineteen participating models was operated with its own physics package, including land-surface, radiation and turbulent mixing schemes, for a full diurnal cycle selected from the Cabauw observatory archive. By carefully prescribing the temporal evolution of the forcings on the vertical column, the models could be evaluated against observations. We focus on the gross features of the stable boundary layer (SBL), such as the onset of evening momentum decoupling, the 2-m minimum temperature, the evolution of the inertial oscillation and the morning transition. New process diagrams are introduced to interpret the variety of model results and the relative importance of processes in the SBL; the diagrams include the results of a number of sensitivity runs performed with one of the models. The models are characterized in terms of thermal coupling to the soil, longwave radiation and turbulent mixing. It is shown that differences in longwave radiation schemes among the models have only a small effect on the simulations; however, there are significant variations in downward radiation due to different boundary-layer profiles of temperature and humidity. The differences in modelled thermal coupling to the land surface are large and explain most of the variations in 2-m air temperature and longwave incoming radiation among models. Models with strong turbulent mixing overestimate the boundary-layer height, underestimate the wind speed at 200 m, and give a relatively large downward sensible heat flux. The result is that 2-m air temperature is relatively insensitive to turbulent mixing intensity. Evening transition times spread 1.5 h around the observed time of transition, with later transitions for models with coarse resolution. Time of onset in the morning transition spreads 2 h around the observed transition time. With this case, the morning transition appeared to be difficult to study, no relation could be found between the studied processes, and the variation in the time of the morning transition among the models.

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Section: Discussionsupporting

confidence: 77%

The Third GABLS Intercomparison Case for Evaluation Studies of Boundary-Layer Models. Part B: Results and Process Understanding

Bosveld

Baas

Steeneveld

et al. 2014

Boundary-Layer Meteorol

106

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“…For example, the assimilation of satellite-derived skin temperatures can be used to better determine heat capacity and moisture fraction of grids. Such data can fill gaps in diurnal energy budgets, resulting in improved short-term forecasts of temperatures, mixing heights, clouds, and photolysis rates (McNider et al, 2005;Arastoo et al, 2007). The recently established new COST Action ES1004: European Framework for On-Line Integrated Air-Quality and Meteorology Modelling (EuMetChem) will focus on further development of integrated CWF systems and on the new generation of online integrated chemistry and meteorology models with twoway interactions between atmospheric chemistry (including gases and aerosols), clouds, radiation, boundary layer and other meteorological and climate processes.…”

Section: Improved Integration Of Nwp and Atmospheric Chemistry Transpmentioning

confidence: 99%

A review of operational, regional-scale, chemical weather forecasting models in Europe

et al. 2012

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Abstract. Numerical models that combine weather forecasting and atmospheric chemistry are here referred to as chemical weather forecasting models. Eighteen operational chemical weather forecasting models on regional and continental scales in Europe are described and compared in this article. Topics discussed in this article include how weather forecasting and atmospheric chemistry models are integrated into chemical weather forecasting systems, how physical processes are incorporated into the models through parameterization schemes, how the model architecture affects the predicted variables, and how air chemistry and aerosol processes are formulated. In addition, we discuss sensitivity analysis and evaluation of the models, user operational requirements, such as model availability and documentation, and output availability and dissemination. In this manner, this article allows for the evaluation of the relative strengths and weaknesses of the various modelling systems and modelling approaches. Finally, this article highlights the most prominent gaps of knowledge for chemical weather forecasting models and suggests potential priorities for future research Published by Copernicus Publications on behalf of the European Geosciences Union. J. Kukkonen et al.: A review of operational, regional-scale, chemical weather forecasting models in Europedirections, for the following selected focus areas: emission inventories, the integration of numerical weather prediction and atmospheric chemical transport models, boundary conditions and nesting of models, data assimilation of the various chemical species, improved understanding and parameterization of physical processes, better evaluation of models against data and the construction of model ensembles.

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“…Given this complexity, some modelers have resorted to simpler models constrained by satellite observations to recover fl uxes as a residual. In particular, McNider et al [1994], Jones et al [1998], Alapaty et al [2001], and others have proposed and used morning satellite surface tendencies to infer the moisture availability and evening tendencies to infer heat capacity [McNider et al, 2005]. The triangle method of Gillies et al [1997] is another example where a look-up table approach is used to derive surface energy fl uxes from satellite observed values of vegetation fraction and surface radiant temperature.…”

Section: Methodsmentioning

confidence: 99%

Eos, Transactions, American Geophysical Union Volume 88, Number 8, 20 February 2007

2007

EoS Transactions

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Retrieval of Model Grid-Scale Heat Capacity Using Geostationary Satellite Products. Part I: First Case-Study Application

Cited by 24 publications

References 47 publications

The Third GABLS Intercomparison Case for Evaluation Studies of Boundary-Layer Models. Part B: Results and Process Understanding

The Third GABLS Intercomparison Case for Evaluation Studies of Boundary-Layer Models. Part B: Results and Process Understanding

A review of operational, regional-scale, chemical weather forecasting models in Europe

Eos, Transactions, American Geophysical Union Volume 88, Number 8, 20 February 2007

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