IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v27y2002i4p621-645.html
   My bibliography  Save this article

Determination of Ångström coefficients from spectral aerosol optical depth at two sites in Egypt

Author

Listed:
  • Tadros, M.T.Y.
  • El-Metwally, M.
  • Hamed, A.B.

Abstract

Ångström Turbidity Coefficients (ÅTC) are estimated from Aerosol Optical Depth by using spectral broadband data. These data are carried out from Pyrheliometric measurements in the period 1991–96 for two sites of different climatological and environmental view; the first one is a highly polluted urbanized site (Cairo), while the other is an unpolluted arid site (Aswan). SMARTS2 model proposed by Gueymard and SPCTRAL2 model proposed by Bird and Riordan, with two pairs of spectral broadbands, are used to select the suitable spectral broadband for estimating ÅTC. The turbidity levels increase during the two transition seasons, spring (due to Khamasin depressions coming from Great Sahara) and autumn (due to extend of Sudan monsoon trough), in addition to summer season. The subsidence inversion is stronger and leads to trap the pollution in the boundary layer in summer. The mean average values of ÅTC, over the all period, are α=0.477, 0.817 and β=0.283, 0.144 for Cairo and Aswan respectively. Turbidity level in Cairo is higher than that in Aswan because the two big industrial areas Helwan and Shoubra El-Kheima surround Cairo, in addition to traffic.

Suggested Citation

  • Tadros, M.T.Y. & El-Metwally, M. & Hamed, A.B., 2002. "Determination of Ångström coefficients from spectral aerosol optical depth at two sites in Egypt," Renewable Energy, Elsevier, vol. 27(4), pages 621-645.
    • Handle: RePEc:eee:renene:v:27:y:2002:i:4:p:621-645
    DOI: 10.1016/S0960-1481(01)00156-2
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148101001562
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/S0960-1481(01)00156-2?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Jacovides, C.P. & Varotsos, C. & Kaltsounides, N.A. & Petrakis, M. & Lalas, D.P., 1994. "Atmospheric turbidity parameters in the highly polluted site of Athens basin," Renewable Energy, Elsevier, vol. 4(5), pages 465-470.
    2. Mosalam Shaltout, M.A. & Tadros, M.T.Y. & El-Metwally, M., 2000. "Studying the extinction coefficient due to aerosol particles at different spectral bands in some regions at great Cairo," Renewable Energy, Elsevier, vol. 19(4), pages 597-615.
    3. Cucumo, M. & Marinelli, V. & Oliveti, G., 1999. "Data bank Experimental data of the Linke Turbidity factor and estimates of the Ångström turbidity coefficient for two Italian localities," Renewable Energy, Elsevier, vol. 17(3), pages 397-410.
    4. Tadros, M.T.Y. & Madkour, M. & Elmetwally, M., 1999. "Size distribution of aerosol particles: comparison between agricultural and industrial areas in Egypt," Renewable Energy, Elsevier, vol. 17(3), pages 339-354.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Madkour, M.A. & El-Metwally, M. & Hamed, A.B., 2006. "Comparative study on different models for estimation of direct normal irradiance (DNI) over Egypt atmosphere," Renewable Energy, Elsevier, vol. 31(3), pages 361-382.
    2. Khalil, Samy A. & Shaffie, A.M., 2016. "Evaluation of transposition models of solar irradiance over Egypt," Renewable and Sustainable Energy Reviews, Elsevier, vol. 66(C), pages 105-119.
    3. Khalil, Samy A. & Shaffie, A.M., 2016. "Attenuation of the solar energy by aerosol particles: A review and case study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 363-375.
    4. Eltbaakh, Yousef A. & Ruslan, M.H. & Alghoul, M.A. & Othman, M.Y. & Sopian, K. & Razykov, T.M., 2012. "Solar attenuation by aerosols: An overview," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(6), pages 4264-4276.
    5. Janjai, S. & Kumharn, W. & Laksanaboonsong, J., 2003. "Determination of Angstrom’s turbidity coefficient over Thailand," Renewable Energy, Elsevier, vol. 28(11), pages 1685-1700.
    6. Gueymard, Christian A., 2005. "Interdisciplinary applications of a versatile spectral solar irradiance model: A review," Energy, Elsevier, vol. 30(9), pages 1551-1576.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Garniwa, Pranda M.P. & Lee, Hyunjin, 2023. "Intercomparison of the parameterized Linke turbidity factor in deriving global horizontal irradiance," Renewable Energy, Elsevier, vol. 212(C), pages 285-298.
    2. Khalil, Samy A. & Shaffie, A.M., 2016. "Attenuation of the solar energy by aerosol particles: A review and case study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 363-375.
    3. Chaâbane, M. & Masmoudi, M. & Medhioub, K., 2004. "Determination of Linke turbidity factor from solar radiation measurement in northern Tunisia," Renewable Energy, Elsevier, vol. 29(13), pages 2065-2076.
    4. Koussa, Mustapha & Saheb-Koussa, Djohra & Hadji, Seddik, 2017. "Experimental investigation of simple solar radiation spectral model performances under a Mediterranean Algerian's climate," Energy, Elsevier, vol. 120(C), pages 751-773.
    5. Jacovides, C.P. & Boland, J. & Asimakopoulos, D.N. & Kaltsounides, N.A., 2010. "Comparing diffuse radiation models with one predictor for partitioning incident PAR radiation into its diffuse component in the eastern Mediterranean basin," Renewable Energy, Elsevier, vol. 35(8), pages 1820-1827.
    6. Karapantsios, T.D & Hatzimoisiadis, K.A & Balouktsis, A.I, 1999. "Estimation of total atmospheric pollution using global radiation data: introduction of a novel clear day selection methodology," Renewable Energy, Elsevier, vol. 17(2), pages 169-181.
    7. Amit Kumar & Arvind Chandra Pandey & Swati Pandey & P. K. Srivastava, 2021. "Evaluating long-term variability in precipitation and temperature in eastern plateau region, India, and its impact on urban environment," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 23(3), pages 3731-3761, March.
    8. Malik, A.Q., 2000. "A modified method of estimating Ångström’s turbidity coefficient for solar radiation models," Renewable Energy, Elsevier, vol. 21(3), pages 537-552.
    9. Gutiérrez-Trashorras, Antonio J. & Villicaña-Ortiz, Eunice & Álvarez-Álvarez, Eduardo & González-Caballín, Juan M. & Xiberta-Bernat, Jorge & Suarez-López, María J., 2018. "Attenuation processes of solar radiation. Application to the quantification of direct and diffuse solar irradiances on horizontal surfaces in Mexico by means of an overall atmospheric transmittance," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 93-106.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:27:y:2002:i:4:p:621-645. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.