Paper No. J06176 of the Journal of the American Water Resources Association (JAWRA). Discussions are open until October 1, 2008.
Differences in Evaporation Between a Floating Pan and Class A Pan on Land1
Article first published online: 7 MAR 2008
© 2008 American Water Resources Association
JAWRA Journal of the American Water Resources Association
Volume 44, Issue 3, pages 552–561, June 2008
How to Cite
Masoner, J. R., Stannard, D. I. and Christenson, S. C. (2008), Differences in Evaporation Between a Floating Pan and Class A Pan on Land. JAWRA Journal of the American Water Resources Association, 44: 552–561. doi: 10.1111/j.1752-1688.2008.00181.x
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- Issue published online: 28 MAR 2008
- Article first published online: 7 MAR 2008
- Received December 5, 2006; accepted September 3, 2007.
- floating evaporation pan;
- class A evaporation pan;
- land pan;
- evaporation differences;
- evaporation pans;
- pan coeficient
Abstract: Research was conducted to develop a method for obtaining floating pan evaporation rates in a small (less than 10,000 m2) wetland, lagoon, or pond. Floating pan and land pan evaporation data were collected from March 1 to August 31, 2005, at a small natural wetland located in the alluvium of the Canadian River near Norman, Oklahoma, at the U.S. Geological Survey Norman Landfill Toxic Substances Hydrology Research Site. Floating pan evaporation rates were compared with evaporation rates from a nearby standard Class A evaporation pan on land. Floating pan evaporation rates were significantly less than land pan evaporation rates for the entire period and on a monthly basis. Results indicated that the use of a floating evaporation pan in a small free-water surface better simulates actual physical conditions on the water surface that control evaporation. Floating pan to land pan ratios were 0.82 for March, 0.87 for April, 0.85 for May, 0.85 for June, 0.79 for July, and 0.69 for August.