reference evapotranspiration is an important parameter in irrigation systems' design that is evaluated through either direct (lysimeter) or calculated method (empirical equations). when there is a lack of lysimeters' data, penman monteith fao method could be employed as a standard method for evaluating the other empirical methods' results. in this research, 13 year evaporation pa...

The AGA Institute Medical Position Panel consisted of the authors of the technical review (Stuart J. Spechler, MD, AGAF, Prateek Sharma, MD, Rhonda F. Souza, MD, AGAF, John M. Inadomi, MD, AGAF, Nicholas J. Shaheen, MD, MPH, AGAF), the chair of the Medical Position Panel (John I. Allen, MD, MBA, AGAF), the chair of the AGA Institute Practice Management and Economics Committee and the AGA Instit...

introduction: evaporation and evapotranspiration are two major components of hydrological cycle which are very important for agricultural studies as well as water resources management. so far, various methods have been addressed for the estimation of daily reference crop evapotranspiration (et0). among them, fao penman-montieth 56 (pmf-56) (allen et al., 1998) is widely used as a standard metho...

0006-3207/$ see front matter Published by Elsevier Ltd. http://dx.doi.org/10.1016/j.biocon.2013.01.010 ⇑ Corresponding author. Tel.: +1 608 781 6309; fax: +1 608 783 6066. E-mail addresses: [email protected] (W.E. Thogmartin), [email protected] (C.A. Sanders-Reed), [email protected] (P.C. McKann), [email protected] (L. Pruitt), [email protected] (R.A. King), [email protected] (M.C. Runge), r...

The Class A pan coefficient (Kp) has been used to convert pan evaporation (ECA) to grass-reference evapotranspiration (ETo), an important component in water management of irrigated crops. There are several methods to determine Kp values, using wind speed, relative humidity and fetch length and conditions. This paper analyses the following methods to estimate Kp values: Doorenbos & Pruitt (1977)...