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A Simple Parameterization of the Short-wave Aerosol Optical Properties for Surface Direct and Diffuse Irradiances Assessment in a Numerical Weather Model : Volume 7, Issue 1 (17/01/2014)

By Ruiz-arias, J. A.

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Book Id: WPLBN0004009731
Format Type: PDF Article :
File Size: Pages 37
Reproduction Date: 2015

Title: A Simple Parameterization of the Short-wave Aerosol Optical Properties for Surface Direct and Diffuse Irradiances Assessment in a Numerical Weather Model : Volume 7, Issue 1 (17/01/2014)  
Author: Ruiz-arias, J. A.
Volume: Vol. 7, Issue 1
Language: English
Subject: Science, Geoscientific, Model
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description: Solar Radiation and Atmosphere Modeling Group, Physics Department, University of Jaén, Jaén, Spain. Broadband short-wave (SW) surface direct and diffuse irradiances are not typically within the set of output variables produced by numerical weather prediction (NWP) models. However, they are being more and more demanded in solar energy applications. A detailed representation of the aerosol optical properties is important to achieve an accurate assessment of these direct and diffuse irradiances. Nonetheless, NWP models typically oversimplify its representation or even neglect its effect. In this work, a flexible method to account for the SW aerosol optical properties in the computation of broadband SW surface direct and diffuse irradiances is presented. It only requires aerosol optical depth at 0.55 μm and the type of predominant aerosol. The rest of parameters needed to consider spectral aerosol extinction, namely, Angström exponent, aerosol single-scattering albedo and aerosol asymmetry factor, are parameterized. The parameterization has been tested in the RRTMG SW scheme of the Weather Research and Forecasting (WRF) NWP model. However, it can be adapted to any other SW radiative transfer band model. It has been verified against a control experiment along five radiometric stations in the contiguous US. The control experiment consisted of a clear-sky evaluation of the RRTMG solar radiation estimates obtained in WRF when RRTMG is driven with ground-observed aerosol optical properties. Overall, the verification has shown very satisfactory results for both broadband SW surface direct and diffuse irradiances. It has proven effective to significantly reduce the prediction error and constraint the seasonal bias in clear-sky conditions to within the typical observational error in well-maintained radiometers.

A simple parameterization of the short-wave aerosol optical properties for surface direct and diffuse irradiances assessment in a numerical weather model

Ångström, A.: Techniques of determinig the turbidity of the atmosphere 1, Tellus, 13, 214–223, 1961.; ARM: available at: (last access: 7 November), 2013.; Augustine, J. A., Hodges, G. B., Cornwall, C. R., Michalsky, J. J., and Medina, C. I.: An update on SURFRAD – the GCOS Surface Radiation budget network for the continental United States, J. Atmos. Ocean. Tech., 22, 1460–1472, 2005.; Cahalan, R. F., Oreopoulos, L., Marshak, A., Evans, K. F., Davis, A. B., Pincus, R., Yetzer, K. H., Mayer, B., Davies, R., Ackerman, T. P., Barker, H. W., Clothiaux, E. E., Ellingson, R. G., Garay, M. J., Kassianov, E., Kinne, S., Macke, A., O'Hirok, W., Partain, P. T., Prigarin, S. M., Rublev, A. N., Stephens, G. L., Szczap, F., Takara, E. E., Várnai, T., Wen, G., and Zhuravleva, T. B.: THE I3RC: bringing together the most advanced radiative transfer tools for cloudy atmospheres, B. Am. Meteorol. Soc., 86, 1275–1293, 2005.; Chou, M.-D., Suarez, M. J., Ho, C.-H., Yan, M. M., and Lee, K.-T.: Parameterizations for cloud overlapping and shortwave single-scattering properties for use in general circulation and cloud ensemble models, J. Climate, 11, 202–214, 1998.; Diagne, M., David, M., Lauret, P., Boland, J., and Schmutz, N.: Review of solar irradiance forecasting methods and a proposition for small-scale insular grids, Renew. Sust. Energ. Rev., 27, 65–76, 2013.; Dubovik, O., Smirnov, A., Holben, B., King, M., Kaufman, Y., Eck, T., and Slutsker, I.: Accuracy assessments of aerosol optical properties retrieved from Aerosol Robotic Network (AERONET) sun and sky radiance measurements, J. Geophys. Res.-Atmos., 105, 9791–9806, 2000.; Dudhia, J.: Numerical study of convection observed during the winter monsoon experiment using a mesoscale two-dimensional model, J. Atmos. Sci., 46, 3077–3107, 1989.; Edwards, J. and Slingo, A.: Studies with a flexible new radiation code. I: Choosing a configuration for a large-scale model, Q. J. Roy. Meteor. Soc., 122, 689–719, 1996.; GEOS-5: available at: (last access: 7 November), 2013.; Gueymard, C. A.: Parameterized transmittance model for direct beam and circumsolar spectral irradiance, Sol. Energy, 71, 325–346, 2001.; Gueymard, C. A.: The Sun's total and spectral irradiance for solar energy applications and solar radiation models, Sol. Energy, 76, 423–453, 2004.; Gueymard, C. A.: Temporal variability in direct and global irradiance at various time scales as affected by aerosols, Sol. Energy, 86, 3544–3553, 2012.; Gueymard, C. A. and Thevenard, D.: Monthly average clear-sky broadband irradiance database for worldwide solar heat gain and building cooling load calculations, Sol. Energy, 83, 1998–2018, 2009.; Holben, B., Eck, T., Slutsker, I., Tanre, D., Buis, J., Setzer, A., Vermote, E., Reagan, J., Kaufman, Y., Nakajima, T., Lavenu, F., Jankowiak, I., and Smirnov, A.: AERONET: a federated instrument network and data archive for aerosol characterization, Remote Sens. Environ., 66, 1–16, 1998.; Iacono, M. J., Delamere, J. S., Mlawer, E. J., Shephard, M. W., Clough, S. A., and Collins, W. D.: Radiative forcing by long-lived greenhouse gases: calculations with the AER radiative transfer models, J. Geophys. Res.-Atmos., 113, D13103, doi:10.1029/2008JD009944, 2008.; Inman, R. H., Pedro, H. T., and Coimbra, C. F.: Solar forecasting methods for renewable energy integration, Prog. Energ. Combust., 39, 535–576, 2013.; Iwabuchi, H.: Efficient Monte Carlo methods for radiative transfer modeling, J. Atmos. Sci., 63, 2324–2339, 2006.; Lee, W.-L., Liou, K., and Hall, A.: Parameterization of solar fluxes over mountain surfaces for application to climate models, J. Geophys. Res.-Atmos., 116, D01101, doi:10.1029/2010JD014722, 2011.; Liou, K.:


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