J. A. Augustine, J. J. Deluisi, and C. N. Long, SURFRAD???A National Surface Radiation Budget Network for Atmospheric Research, 081<2341:SANSRB>2.3.CO, pp.2341-23581520, 2000.
DOI : 10.1175/1520-0477(2000)081<2341:SANSRB>2.3.CO;2

M. Bengulescu, P. Blanc, W. , and L. , Characterizing temporal variability in measurements of surface solar radiation and its dependence on climate, Energy Proced, pp.164-171, 2016.

M. Bengulescu, P. Blanc, A. Boilley, W. , and L. , Do modelled or satellite-based estimates of surface solar irradiance accurately describe its temporal variability?, Advances in Science and Research, vol.14, pp.35-48, 2017.
DOI : 10.5194/asr-14-35-2017-supplement

URL : https://hal.archives-ouvertes.fr/hal-01472866

M. Bengulescu, P. Blanc, W. , and L. , On the intrinsic timescales of temporal variability in measurements of the surface solar radiation, Nonlin. Processes Geophys, pp.19-37, 2018.

I. Bogárdi, A. Bárdossy, and L. Duckstein, Multicriterion Network Design Using Geostatistics, Water Resources Research, vol.1, issue.5, pp.199-208, 1985.
DOI : 10.1007/978-1-4615-8768-2_4

A. Boilley and L. Wald, Comparison between meteorological reanalyses from ERA-Interim and MERRA and measurements of daily solar irradiation at surface, Renew. Energ, pp.135-143, 2015.

B. Bourlès, R. Lumpkin, M. J. Mcphaden, F. Hernandez, P. Nobre et al., THE PIRATA PROGRAM, Bulletin of the American Meteorological Society, vol.89, issue.8, pp.1111-1125, 2008.
DOI : 10.1175/2008BAMS2462.1

R. L. Bras and I. Rodríguez-iturbe, Network design for the estimation of areal mean of rainfall events, Water Resources Research, vol.12, issue.4, pp.1185-1195, 1976.
DOI : 10.1016/0022-1694(73)90050-4

L. Diabaté, P. Blanc, W. , and L. , Solar radiation climate in Africa, Solar Energy, vol.76, issue.6, pp.733-744, 2004.
DOI : 10.1016/j.solener.2004.01.002

Y. Eissa, M. Korany, Y. Aoun, M. Boraiy, A. Wahab et al., Validation of the Surface Downwelling Solar Irradiance Estimates of the HelioClim-3 Database in Egypt, Remote Sensing, vol.7, issue.7, pp.9269-9291, 2015.
DOI : 10.5194/gmd-7-1661-2014

URL : https://hal.archives-ouvertes.fr/hal-01180379

G. R. Foltz, A. T. Evan, H. P. Freitag, S. Brown, and M. J. Mcphaden, Dust Accumulation Biases in PIRATA Shortwave Radiation Records*, Journal of Atmospheric and Oceanic Technology, vol.30, issue.7, pp.1414-1432, 2013.
DOI : 10.1175/JTECH-D-12-00169.1

J. J. Greif, K. Scharmer, R. Aguiar, M. Albuisson, H. Beyer et al., The European Solar Radiation Atlas : Database, Models and Exploitation Software, Presse des Mines, p.290, 2000.

B. Gschwind, L. Ménard, M. Albuisson, W. , and L. , Converting a successful research project into a sustainable service: The case of the SoDa Web service, Environmental Modelling & Software, vol.21, issue.11, pp.1555-1561, 2006.
DOI : 10.1016/j.envsoft.2006.05.002

URL : https://hal.archives-ouvertes.fr/hal-00361357

M. Korany, M. Boraiy, Y. Eissa, Y. Aoun, A. Wahab et al., A database of multi-year (2004?2010) quality-assured surface solar hourly irradiation measurements www.adv-sci-res, Adv. Sci. Res, vol.15127, issue.15, pp.127-136, 2018.

. For-the-egyptian-territory, Earth Syst. Sci. Data, vol.8105194, pp.105-113, 2016.

M. Lefèvre, L. Diabaté, W. , and L. , Using reduced data sets ISCCP-B2 from the Meteosat satellites to assess surface solar irradiance, Solar Energy, vol.81, issue.2, pp.240-253, 2007.
DOI : 10.1016/j.solener.2006.03.008

M. Marchand, N. Al-azri, A. Ombe-ndeffotsing, E. Wey, W. et al., Evaluating meso-scale change in performance of several databases of hourly surface irradiation in South-eastern Arabic Pensinsula, Advances in Science and Research, vol.14, issue.10, pp.7-15, 2017.
DOI : 10.1002/9783527634651

URL : https://hal.archives-ouvertes.fr/hal-01464164

M. Marchand, A. Ghennioui, E. Wey, W. , and L. , Comparison of several satellite-derived databases of surface solar radiation against ground measurement in Morocco, Advances in Science and Research, vol.15, pp.21-29, 2018.
DOI : 10.5194/os-2017-95

URL : https://hal.archives-ouvertes.fr/hal-01769765

T. Muneer and F. Fairooz, Quality control of solar radiation and sunshine measurements ??? lessons learnt from processing worldwide databases, Building Services Engineering Research and Technology, vol.34, issue.3, pp.151-166, 2002.
DOI : 10.1016/0038-092X(86)90151-9

J. Page, M. Albuisson, W. , and L. , The European Solar Radiation Atlas: a valuable digital tool, Solar Energy, vol.71, issue.1, pp.81-8300157, 2001.
DOI : 10.1016/S0038-092X(00)00157-2

URL : https://hal.archives-ouvertes.fr/hal-00363667

Z. Qu, B. Gschwind, M. Lefevre, W. , and L. , Improving HelioClim-3 estimates of surface solar irradiance using the McClear clear-sky model and recent advances in atmosphere composition, Atmospheric Measurement Techniques, vol.7, issue.11, pp.3927-3933, 2014.
DOI : 10.5194/acp-11-3281-2011

URL : https://hal.archives-ouvertes.fr/hal-01087291

C. Rigollier, M. Lefèvre, W. , and L. , The method Heliosat-2 for deriving shortwave solar radiation from satellite images, Solar Energy, vol.77, issue.2, pp.159-169, 2004.
DOI : 10.1016/j.solener.2004.04.017

URL : https://hal.archives-ouvertes.fr/hal-00361364

J. H. Seinfeld, C. Bretherton, K. S. Carslaw, H. Coe, P. J. De-mott et al., Aerosol?cloud interactions in climate, P. Natl. Acad. Sci. USA, pp.5781-5790, 2016.

J. Servain, A. J. Busalacchi, M. J. Mcphaden, A. D. Moura, G. Reverdin et al., A pilot research moored array in the Tropical Atlantic (PIRATA), B

. Am, . Meteor, and . Soc, APRMAI>2.0.CO, pp.2019-20321520, 1998.

D. R. Stauffer, N. L. Seaman, G. K. Hunter, S. M. Leidner, A. Lario-gibbs et al., A Field-Coherence Technique for Meteorological Field-Program Design for Air Quality Studies. Part I: Description and Interpretation, Journal of Applied Meteorology, vol.39, issue.3
DOI : 10.1175/1520-0450(2000)039<0297:AFCTFM>2.0.CO;2

. Appl and . Meteor, , pp.297-316, 2000.

G. M. Stokes and S. E. Schwartz, The Atmospheric Radiation Measurement (ARM) Program: Programmatic Background and Design of the Cloud and Radiation Test Bed, 075<1201:TARMPP>2.0.CO, pp.1201-12221520, 1994.
DOI : 10.1175/1520-0477(1994)075<1201:TARMPP>2.0.CO;2

C. Thomas, E. Wey, P. Blanc, W. , and L. , Validation of three satellite-derived databases of surface solar radiation using measurements performed at 42 stations in Brazil, Advances in Science and Research, vol.13, pp.81-86, 2016.
DOI : 10.5194/amt-7-3927-2014

URL : https://hal.archives-ouvertes.fr/hal-01330135

C. Thomas, E. Wey, P. Blanc, L. Wald, and M. Lefèvre, Validation of HelioClim-3 version 4, HelioClim-3 version 5 and MACC-RAD using 14 BSRN stations, Energy Proced, pp.1059-1069, 2016.

M. Trolliet, J. P. Walawender, B. Bourlès, A. Boilley, J. Trentmann et al., Estimating downwelling solar irradiance at the surface of the tropical Atlantic Ocean: A comparison of PIRATA measurements against several re-analyses and satellite-derived data sets, Ocean Science Discussions, 2017.
DOI : 10.5194/os-2017-95-AC5

K. Y. Vinnikov, A. Robock, S. Qiu, and J. K. And-entin, Optimal design of surface networks for observation of soil moisture, Journal of Geophysical Research: Atmospheres, vol.104, issue.D16, 1999.
DOI : 10.2172/10178730

J. W. Ward, Hierarchical Grouping to Optimize an Objective Function, Journal of the American Statistical Association, vol.58, issue.301, pp.236-244, 1963.
DOI : 10.1007/BF02289263

D. E. Wolfe and S. I. Gutman, Developing an Operational, Surface-Based, GPS, Water Vapor Observing System for NOAA: Network Design and Results, Journal of Atmospheric and Oceanic Technology, vol.17, issue.4, pp.426-440, 2000.
DOI : 10.1175/1520-0426(2000)017<0426:DAOSBG>2.0.CO;2