Next Article in Journal
Management Scenarios of the Grand Ethiopian Renaissance Dam and Their Impacts under Recent and Future Climates
Next Article in Special Issue
An Analytical Model of Fickian and Non-Fickian Dispersion in Evolving-Scale Log-Conductivity Distributions
Previous Article in Journal
Investigating Hydrochemical Groundwater Processes in an Inland Agricultural Area with Limited Data: A Clustering Approach
Previous Article in Special Issue
A New Approach to Quantify Shallow Water Hydrologic Exchanges in a Large Regulated River Reach
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessFeature PaperArticle
Water 2017, 9(10), 729; https://doi.org/10.3390/w9100729

Calculation of Steady-State Evaporation for an Arbitrary Matric Potential at Bare Ground Surface

Department of Geology and Geophysics, Texas A&M University, College Station, TX 77843-3115, USA
*
Author to whom correspondence should be addressed.
Received: 10 July 2017 / Revised: 13 September 2017 / Accepted: 19 September 2017 / Published: 22 September 2017
Full-Text   |   PDF [1465 KB, uploaded 22 September 2017]   |  

Abstract

Evaporation from soil columns in the presence of a water table is a long lasting subject that has received great attention for many decades. Available analytical studies on the subject often involve an assumption that the potential evaporation rate is much less than the saturated hydraulic conductivity of the soil. In this study, we develop a new semi-analytical method to estimate the evaporation rate for an arbitrary matric potential head at bare soil surface without assuming that the potential evaporation rate is much less than the saturated hydraulic conductivity of the soil. The results show that the evaporation rates calculated by the new solutions fit well with the HYDRUS-1D simulation. The new solutions also can reproduce the results of potential evaporation rate calculated from previous equations under the special condition of an infinite matric potential head at bare soil surface. The developed new solutions expand our present knowledge of evaporation estimation at bare ground surface to more general field conditions. View Full-Text
Keywords: steady-state vertical flux; evaporation calculation; unsaturated flow; semi-analytical solution steady-state vertical flux; evaporation calculation; unsaturated flow; semi-analytical solution
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Liu, X.; Zhan, H. Calculation of Steady-State Evaporation for an Arbitrary Matric Potential at Bare Ground Surface. Water 2017, 9, 729.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top