A comparison of the DirIndex model for computing direct normal solar irradiance from global horizontal using different clear sky transmittance models is presented for four ground stations that belong to Baseline Surface Radiation Network (BSRN) and Aerosol RObotic NETwork (AERONET) networks. The results of DirInt model, which does not include any clear sky transmittance contribution, are also shown. The input for the different clear sky models selected (European Solar Radiation Atlas (ESRA), SOLar Irradiance Scheme (SOLIS) simplified, and Reference Evaluation of Solar Transmittance, 2 bands (REST2)) was generated from the original aerosol optical depth and water vapour measurements provided by AERONET. The results show different trends in the performance of the DirIndex model combined with the clear sky methods. An attempt to correct the trends to the proper one is finally proposed here and the improvement achieved is shown.
REFERENCES
1.
Batlles
, F. J.
, Rubio
, M. A.
, Tovar
, J.
, Olmo
, F. J.
, and Alados-Arboledas
, L.
, “Empirical modeling of hourly direct irradiance by means of hourly global irradiance
,” Energy
25
, 675
–688
(2000
).2.
Cachorro
, V. E.
, Gonzalez
, M. J.
, de Frutos
, A. M.
, and Casanova
, J. L.
, “Fitting Angstrom formula to spectrally resolved aerosol optical thickness
,” Atmos. Environ.
23
, 265
–270
(1989
).3.
de Miguel
, A.
, Bilbao
, J.
, Aguiar
, R.
, Kambezidis
, H.
, and Negro
, E.
, “Diffuse solar irradiation model evaluation in the North Mediterranean Belt area
,” Sol. Energy
70
, 143
–153
(2001
).4.
Erbs
, D. G.
, Klein
, S. A.
, and Duffie
, J. A.
, “Estimation of the diffuse radiation fraction for hourly, daily, and monthly-average global radiation
,” Sol. Energy
28
, 293
–302
(1982
).5.
Gueymard
, C.
, SMARTS2, Simple Model of the Atmospheric Radiative Transfer of Sunshine: Algorithms and Performance Assessment
(Florida Solar Energy Center
, 1995
).6.
Gueymard
, C. A.
, “Temporal variability in direct and global irradiance at various time scales as affected by aerosols
,” Sol. Energy
86
, 3544
–3553
(2012a
).7.
Gueymard
, C. A.
, “Clear-sky irradiance predictions for solar resource mapping and large-scale applications: Improved validation methodology and detailed performance analysis of 18 broadband radiative models
,” Sol. Energy
86
, 2145
–2169
(2012b
).8.
Gueymard
, C. A.
, “REST2: High-performance solar radiation model for cloudless-sky irradiance, illuminance, and photosynthetically active radiation—Validation with a benchmark dataset
,” Sol. Energy
82
, 272
–285
(2008
).9.
Hoyer-Klick
, C.
, Beyer
, H. G.
, Dumortier
, D.
, Schroedter Homscheidt
, M.
, Wald
, L.
, Martinoli
, M.
, Schillings
, C.
, Gschwind
, B. T.
, Menard
, L.
, Gaboardi
, E.
, Polo
, J.
, Cebecauer
, T.
, Huld
, T.
, Suri
, M.
, de Blas
, M.
, Lorenz
, E.
, Kurz
, C.
, Remund
, J.
, Ineichen
, P.
, Tsvetkov
, A.
, and Hofierka
, J.
, “MESoR—Management and exploitation of solar resource knowledge
,” in Proceedings of the SolarPACES Conference, Berlin, 2009
.10.
Ineichen
, P.
and Perez
, R.
, “A new airmass independent formulation for the Linke turbidity coefficient
,” Sol. Energy
73
, 151
–157
(2002
).11.
Ineichen
, P.
, “Comparison and validation of three global-to-beam irradiance models against ground measurements
,” Sol. Energy
82
, 501
–512
(2008a
).12.
Ineichen
, P.
, “A broadband simplified version of the Solis clear sky model
,” Sol. Energy
82
, 758
–762
(2008b
).13.
Ineichen
, P.
, “Conversion function between the Linke turbidity and the atmospheric water vapor and aerosol content
,” Sol. Energy
82
, 1095
–1097
(2008c
).14.
Iqbal
, M.
, “A study of Canadian diffuse and total solar radiation data—I Monthly average daily horizontal radiation
,” Sol. Energy
22
, 81
–86
(1979
).15.
Liu
, B. Y. H.
and Jordan
, R. C.
, “The interrelationship and characteristic distribution of direct, diffuse, and total solar radiation
,” Sol. Energy
4
, 1
–19
(1960
).16.
Louche
, A.
, Notton
, G.
, Poggi
, P.
, and Simonnot
, G.
, “Correlations for direct normal and global horizontal irradiation on a French Mediterranean site
,” Sol. Energy
46
, 261
–266
(1991
).17.
Maxwell
, E. L.
, “A quasi-physical model for converting hourly global horizontal to direct normal insolation
,” Technical Report No. SERI/TR–215-3087, 1987
.18.
McArthur
, L. J. B.
, Baseline Surface Radiation Network (BSRN) Operations Manual V1.0
, Series: World Climate Research Programme (Secretariat of the World Meteorological Organization
, Geneva, Switzerland
, 1998
).19.
Mueller
, R. W.
, Dagestad
, K. F.
, Ineichen
, P.
, Schroedter-Homscheidt
, M.
, Cros
, S.
, Dumortier
, D.
, Kuhlemann
, R.
, Olseth
, J. A.
, Piernavieja
, G.
, and Reise
, C.
, “Rethinking satellite-based solar irradiance modelling: The SOLIS clear-sky module
,” Remote Sens. Environ.
91
, 160
–174
(2004
).20.
Orgill
, J. F.
and Hollands
, K. G. T.
, “Correlation equation for hourly diffuse radiation on a horizontal surface
,” Sol. Energy
19
, 357
–359
(1977
).21.
Perez
, R.
, Ineichen
, P.
, Maxwell
, E.
, Seals
, R.
, and Zelenka
, A.
, “Dynamic global-to-direct irradiance conversion models
,” ASHRAE Trans.
98
, 354
–369
(1992
).22.
Perez
, R.
, Ineichen
, P.
, Moore
, K.
, Kmiecik
, M.
, Chain
, C.
, George
, R.
, and Vignola
, F.
, “A new operational model for satellite-derived irradiances: Description and validation
,” Sol. Energy
73
, 307
–317
(2002
).23.
Reindl
, D. T.
, Beckman
, W. A.
, and Duffie
, J. A.
, “Diffuse fraction correlations
,” Sol. Energy
45
, 1
–7
(1990
).24.
Rigollier
, C.
, Bauer
, O.
, and Wald
, L.
, “On the clear sky model of the ESRA—European Solar Radiation Atlas—with respect to the heliosat method
,” Sol. Energy
68
, 33
–48
(2000
).25.
Skartveit
, A.
, Olseth
, J. A.
, and Tuft
, M. E.
, “An hourly diffuse fraction model with correction for variability and surface albedo
,” Sol. Energy
63
, 173
–183
(1998
).© 2013 AIP Publishing LLC.
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