| تعداد نشریات | 24 |
| تعداد شمارهها | 874 |
| تعداد مقالات | 7,803 |
| تعداد مشاهده مقاله | 14,218,034 |
| تعداد دریافت فایل اصل مقاله | 12,164,679 |
Prediction of frost occurrence by estimating daily minimum temperature in semi-arid areas in Iran | ||
| Iran Agricultural Research | ||
| مقاله 3، دوره 37، شماره 1، شهریور 2018، صفحه 19-32 اصل مقاله (817.02 K) | ||
| نوع مقاله: Full Article | ||
| شناسه دیجیتال (DOI): 10.22099/iar.2018.4689 | ||
| نویسندگان | ||
| M. H. Jorenoosh* ؛ A. R. Sepaskhah | ||
| Department of Irrigation, College of Agriculture, Shiraz University, Shiraz, I. R. Iran | ||
| چکیده | ||
| ABSTRACT- Many fruits, vegetables and ornamental crops of tropical origin experience physiological damage when subjected to low temperatures. Protection of plants from the effects of lethally low temperatures is important in agriculture, especially in horticultural production of high value fruits and vegetables. The objective of this study was to develop a simple model to predict the daily minimum air temperaturefor prediction of frost occurrence in Bajgah and Kooshkak semi-arid areas, Fars province. Initially, the relationship between the minimum temperature of the early morning of a day with some meteorological parameters of the previous day was developed. Meteorological parameters used in this analysis are daily relative humidity, wind speed, pan evaporation, rainfall, sunshine hours, and estimated dew-point temperature. Dew-point is an important parameter which is related to the minimum temperature in different months with low temperature in Bajgah and Kooshkak areas. Many daily weather parameters used in the regression analysis showed no significant relationship with the daily early morning minimum temperature, except the dew-point and relative humidity. The regression equation between the differences between dew-point and minimum temperature with relative humidity as a simple model was proposed to be used to predict the minimum temperature and subsequently frost occurrence in the study regions. This model was validated by independent data set with an acceptable accuracy for the study regions. | ||
| کلیدواژهها | ||
| Keywords:؛ Frost؛ Dew-point؛ Relative humidity؛ Minimum temperature | ||
| مراجع | ||
|
Allen, R.G., Pereira, L.S., Raes, D., & Smith, M. (1998). Crop Evapotranspiration. FAO Irrigation and Drainage Paper, 56, 145-167.
Bagdonas, A., Georg, J.C., & Gerber, J.F. (1978). Techniques of frost prediction and methods of frost and cold protection. World Meteorology Organization Technology Note, 157.
Cary, J.W. (1982). Amount of soil ice predicted from weather observations. Agricultural Meteorology, 27, 35-43.
Didari, S., Zand Parsa, S., Sepaskhah, A.R., Kamgar, A.A., & Khalili, D. (2011). Preparation of frost atlas using different interpolation methods in a semiarid region of south of Iran. Theoretical and Applied Climatology, 108,159-171.
Nash, J.E., & Sutcliffe, J.V. (1970). River flow forecasting through conceptual models. Journal of Hydrology, 10, 282–290.
Nazemosadat, M.J., Sepaskhah, A.R., & Mohammadi, S. (2001). A case study on the relationship between daily dew-point and minimum temperature in next day in Jahrom in Iran. Iranian Journal of Agricultural Science and Technology, 5(3), 9-17. (in Persion)
Rosenberg, N.J., Blain, L., & Shashi, B. (1983). The Biological Environment (2st ed.). John Wiley and Sons.
Snyder, R.L. (2000). Predicting temperature trends during freeze nights. Department of Land, Air and Water Research, University of California, Davis, CA 95616, USA.
Vantskevich, G.Z. (1985). Agrometeorology. Translated from Russian by the Israel Program for Scientific Translation for National Science Foundation.
Whiteman, T.M. (1957). Freezing points of fruits, vegetables, and florist stocks. United States Department of Agriculture, 196.
Willmott, C.J. (1982). Some comments on the evaluation of model performance. American. Meteoroogy, G3, 1309-1313.
Ziaee, A.R., Kamgar, A.A., Sepaskhah, A.R., & Ranjbar, S. (2006). Determination of minimum temperature probability atlas by use of weather parameters in Fars province in Iran. Iranian Journal of Agricultural Science and Technology, 10(3), 13-26. (in Persion). | ||
|
آمار تعداد مشاهده مقاله: 2,043 تعداد دریافت فایل اصل مقاله: 1,490 |
||