AhSOLAR - DTIC

AD-A269 970 TECHNICAL REPORT RD-WS-93-6

AhSOLAR RADIATION IN SAUDI ARABIA

Dorathy A. Stewart Helmut P. Dudel

Larry J. Levitt Weapons Sciences Directorate Research, Development, and Engineering Center

June 1993

SDTIC

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Ffed~tc~ri A~rneeprija, A%1umbsamna 35898-5000

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4. PEIRFORMING ORGANIZATION REPORT MUMBER(S)

TR-RD-WS-93--6

S. MONITOING ORGANIZATION REPORT NUMBIES)

64. NAME OF PERFORMING ORGANIZATION

Weapons Sciences Directorate RD&F Center

I 6b. OFFICE SYMBOL if Aoau') AMSMI-RD-WS-CM

6C. ADDRESS (Oty, State, and ZIP CodeJ

Commander, U.S. Army Missile Command

ATTN: AMSMI-RD-WS-CM

Redstone Arsenal, AL 35898-5248

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1' 7TLE(includ* Securit Clasification)

Solar Radiation in Saudi Arabia

12. PERSONAL AUTHOR(Sl

Dorathy A. Stewart, Helmut P. Dudel, and Larry J. Levitt

13a. TYPE OF REPORT

13b. TIME COVEREO

14. DATE OF REPORT (Year, Monct? Day)

Final

FROM Mar 92 TO Dec 92

June 1993

16. SUPPLEMENTARY NOTATION

1'.PAGE COUNT 58

17. FIELD

COSArI CODES

GROUP

SUB-GROUP

10. SUBJECT TERMS (Contkie On reverse ief necusary and kienafy by black ?umber)

Climatology, Solar Irradiance, Solar Radiation, Solar Energy,

Saudi Arabia, Riyadh, Dhahran, Qaisumah

19. ABSTRACT (Continue on reverme if ;?tm~ary and identify by block number)

Original solar irradiance data were obtained from the U.S. Air Force Environmental Technical Applications Center. These data were based on a model which used standard meteorological data and an albedo supplied by us. A procedure was developed to interpolate missing solar irradiances, and serially complete sets of hourly total solar irradiances were established for the three Saudi Arabian stations Riyadh, Dhahran, and Quasumah for the period January 1981 through July 1990. Tables of maximum, minimum, and mean daily totals, mean hourly values, and frequency distributions for noon are included. Comparison of monthly means and extremes with published data did not produce conclusive results. Considerable disagreement exists among published amounts of solar radiation reaching the surface in this region. The solar irradiance estimates in this report agree with the highest published values and should be considered upper limits.

20.0Dl WUSNTCRLIAOSUSTIIFOIENO/A/UVNALILIMABITIUEDTY OIQF ASBASMTERAACST RPT. E3 OTIC USERS 21. AUBNSTCRALCAT SSSECIUFRIIETYDCLASSIFICATION

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Larry J. Levitt DO FORM 1473, 84 MAR

(205) 876-4328

1 AMSMI-RD-WS-CM

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ACKNOWLEDGMENTS

The authors would like to thank the U.S. Air Force Environmental Technical Applications Center (ETAC) for providing the original data used in this study.

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TABLE OF CONTENTS

I. INTRODUCTION .................................................... II. BACKGROUND INFORMATION ......................................

A. Units and Terminology ............................................ B. Atmospheric Turbidity ............................................ III. ETAC DATA ......................................................... A. Original Data .................................................... B. Interpolation Procedure ........................................... C. Analysis ......................................................... IV. COMPARISON WITH OTHER DATA .................................. V. SUMMARY AND CONCLUSIONS ..................................... REFERENCES ...........................................................

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