evaporation is a fundamental parameter in the hydrological cycle. this study examines the performance of m5model tree and artificial neural network (ann) models in estimating potential evapotranspiration calculated bypenman- monteith and hargreaves- samani equations. daily weather data from two meteorological stations in asemi-arid climate of iran, namely kerman and zahedan, were collected duri...

We present an approach for the calibration of simplified evaporation model parameters based on optimization against most complex estimation, i.e., Penman–Monteith equation. This computes from several input quantities, such as air temperature, wind speed, heat storage, net radiation etc. However, sometimes all these values are not available, therefore we must use models. Our interest in free wat...

In this paper we describe a framework for research into translation that draws on a combination of two existing and independently constructed technologies: an analysis component developed for German by the EUROTRA-D (ET-D) group of IAI and the generation component developed for English by the Penman group at ISI. We present some of the linguistic implications of the research and the promise it ...

* CONTENTh / Page Cyanide Leucoencephalopathy in Rats and Observations on the Vascular and Ferment Hypothese of Demyelnatlng Diseases. C. E. Lumsden 'Positive and Negative Aspects of Hypothalamc-Disorders. B. Brouwer Disturbance of Number-form in a Case of Brain Injury. J. M. K. Spalding and 0. L. Zangwill .. .. .. .. .. .. Memory Studies in Eletric Convulsion llTeapy. Moyra Williams thePrimary...

Hidrolik tasarım süreci ve tarımsal sulama yönetiminde evapotranspirasyonun tahmini oldukça önemlidir. Bu çalışmada günlük evapotranspirasyon miktarı için ortalama sıcaklık (S), bağıl nem (N), rüzgâr hızı (R), solar radyasyon (SR) parametreleri kullanılmıştır. Penman-Monteith, FAO (Food and Agriculture Organization) tarafından önerilen standart bir metottur. metoda göre yapılmış (ET0), referans...

As a key hydrological parameter, daily reference evapotranspiration (ETo) determines the accuracy of the hydrological number of the crop, and, consequently, the regional optimization disposition of water resources. At present, the main methods for ETo estimation are the Penman-Monteith (PM) equation and its modified formula, both of which are based on climatic factors such as temperature, radia...

Cite this article: Hanna E, Penman J, Jónsson T, Bigg GR, Björnsson H, Sjúrðarson S, Hansen MA, Cappelen J, Bryant RG. 2016 Meteorological effects of the solar eclipse of 20 March 2015: analysis of UK Met Office automatic weather station data and comparison with automatic weather station data from the Faroes and Iceland. Phil. Trans. R. Soc. A 374: 20150212. http://dx.doi.org/10.1098/rsta.2015....

So far, various methods have been presented for determining reference crop evapotranspiration in different parts of the world. The most popular and prestigious of them are probably the combined methods of Penman family, modified Blany-Criddle, Hargreaves - Samani and thornthwaite. Due to lack of lysimeter data in many parts of Iran, presenting an equation according to the regional condition wit...