ESTIMATION OF ANGSTROM COEFFICIENT AND DEVELOPING A REGRESSION EQUATION FOR SOLAR RADIATION ESTIMATION (CASE STUDY: MASHHAD)

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

ALIZADEH AMIN; KHALILI NAJMEH

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of Water and Soil Year:2009 | Volume:23 | Issue:1 Page(s): 229-238

Download Full-Text

Persian Verion

View:

2,240

Download:

Cites:

Information Journal Paper

Title

ESTIMATION OF ANGSTROM COEFFICIENT AND DEVELOPING A REGRESSION EQUATION FOR SOLAR RADIATION ESTIMATION (CASE STUDY: MASHHAD)

Author(s)

ALIZADEH AMIN | KHALILI NAJMEH | Issue Writer Certificate

Keywords

ANGSTROM-PRESCOTTQ2

SOLAR RADIATIONQ2

SUNSHINE HOURSQ2

MASHHADQ3

Abstract

Solar radiation, nowadays has a lot of application in different fields of agriculture, irrigation, and hydrology engineering and due to these various applications, different models has been proposed for it’s estimation.ANGSTROM-PRESCOTT equation is one of the most important well known models for SOLAR RADIATION estimation. This equation has empirically coefficient that various for each location. In this paper, the data gathered in MASHHAD Synoptic station during 1378 and 1380, ANGSTROM-PRESCOTT coefficient has been identified according to the ratio of actual SUNSHINE HOURS (n) to the maximum SUNSHINE HOURS (N). Also a Regression local equation has been proposed considering several meteorology parameters including daily gathered data of saturation vapor pressure deficit, precipitation, air temperature mean, relative humidity percentage and n/N. Finally the proposed model has been evaluated according to the independent measured data during 1381 to 1382. The statistical analysis of the results not show a significant difference between multi coefficients-local equation with ANGSTROM-PRESCOTT equation, and therefore without more accuracy and more additional meteorology data and only with the data including SUNSHINE HOURS and calculating extraterrestrial SOLAR RADIATION, global SOLAR RADIATION can be used with a high precision. For instance our model for MASHHAD can be used with a=0.23 and b=0.44 which are the coefficient of the ANGSTROM-PRESCOTT equation. This coefficient should be calibrated and validated for each zone individually.

Cites

References

تعیین ضرایب محلی تشعشع برای منطقه ملاثانی در استان خوزستان

Cite

APA: Copy

ALIZADEH, AMIN, & KHALILI, NAJMEH. (2009). ESTIMATION OF ANGSTROM COEFFICIENT AND DEVELOPING A REGRESSION EQUATION FOR SOLAR RADIATION ESTIMATION (CASE STUDY: MASHHAD). JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 23(1), 229-238. SID. https://sid.ir/paper/141658/en

Vancouver: Copy

ALIZADEH AMIN, KHALILI NAJMEH. ESTIMATION OF ANGSTROM COEFFICIENT AND DEVELOPING A REGRESSION EQUATION FOR SOLAR RADIATION ESTIMATION (CASE STUDY: MASHHAD). JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2009;23(1):229-238. Available from: https://sid.ir/paper/141658/en

IEEE: Copy

AMIN ALIZADEH, and NAJMEH KHALILI, “ESTIMATION OF ANGSTROM COEFFICIENT AND DEVELOPING A REGRESSION EQUATION FOR SOLAR RADIATION ESTIMATION (CASE STUDY: MASHHAD),” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 23, no. 1, pp. 229–238, 2009, [Online]. Available: https://sid.ir/paper/141658/en

Related Journal Papers