Relative humidity based model for estimation of reference evapotranspiration for western plateau and hills region of India

Krishna Bhartiya and Aniruddha Ghare ()

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2014, vol. 28, issue 10, 3355-3364

Abstract: As an important constituent of hydrological cycle, estimation of Reference Evapotranspiration (ET o ) is essential for planning of projects related to water resources. This article compares the results obtained from the available pan evaporation based equations to estimate ET o from pan evaporation (E p ) and proposes a new simplified methodology for estimation of ET o , which needs only the data of relative humidity (H). The resulting model is based upon the collected meteorological data of a selected study area i.e. Nagpur District in Maharashtra State, which lies in western plateau and hills region of India. In the proposed methodology, E p rates are adjusted to the values expected for 50 % relative humidity. Then, the relationship between ET o and the adjusted E p is established. The validation of the proposed new model has been carried out by comparing its results with the results obtained by the pan evaporation method, for the study area as well as for the data set of another area. This new model is found to be reasonably accurate for estimation of reference evapotranspiration for the study area and as such, is expected to be applicable to the river basins located in the regions having climatic conditions similar to that of the study area. Although, if the conditions are different then another site specific model can be developed by adopting the methodology proposed in this article. Copyright Springer Science+Business Media Dordrecht 2014

Keywords: Pan evaporation; Reference evapotranspiration; Pan Coefficient (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://hdl.handle.net/10.1007/s11269-014-0644-9 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:waterr:v:28:y:2014:i:10:p:3355-3364

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/11269

DOI: 10.1007/s11269-014-0644-9

Access Statistics for this article

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA) is currently edited by G. Tsakiris

More articles in Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA) from Springer, European Water Resources Association (EWRA)
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().