Measured dewfall and potential condensation on grazed pasture in the Collie River basin, southwestern Australia

R.A. Sudmeyer; R.A. Nulsen; W.D. Scott

doi:10.1016/0022-1694(94)90220-8

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Measured dewfall and potential condensation on grazed pasture in the Collie River basin, southwestern Australia

Journal article

Peer reviewed

Measured dewfall and potential condensation on grazed pasture in the Collie River basin, southwestern Australia

R.A. Sudmeyer, R.A. Nulsen and W.D. Scott

Journal of Hydrology, Vol.154(1-4), pp.255-269

1994

DOI: https://doi.org/10.1016/0022-1694(94)90220-8

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Abstract

Microlysimeters were used to measure dewfall over seven nights on a grazed grass and clover pasture in the Collie River basin in southwestern Australia. The Penman-Monteith combination equation was used over the same period to estimate potential condensation. Measured dewfall ranged between 0.002 and 0.100 mm night-1; the highest recorded dewfall rate was 0.032 mm h-1. Dewfall was shown to increase with pasture height and biomass. Potential condensation was between 0.20 and 0.36 mm night-1. There was good agreement between measured and potential vapour flux trends. Low overnight wind speeds resulted in a low ratios of dewfall to distillation. The literature suggests that annual dewfall could be up to 12 mm and may occasionally contribute significantly to daily evaporation. However, these amounts are not significant when compared with the 694 mm average annual rainfall of the area. Hence dewfall is not considered to be a significant component of the water balance at this site.

Details

Title: Measured dewfall and potential condensation on grazed pasture in the Collie River basin, southwestern Australia
Authors/Creators: R.A. Sudmeyer (Author/Creator) - Government of Western Australia
R.A. Nulsen (Author/Creator) - Government of Western Australia
W.D. Scott (Author/Creator) - Murdoch University
Publication Details: Journal of Hydrology, Vol.154(1-4), pp.255-269
Publisher: Elsevier B.V.
Identifiers: 991005545084807891
Copyright: © 1994 Elsevier B.V>
Murdoch Affiliation: School of Environmental Science
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.40 Forestry; 3.40.838 Rangeland Dynamics
Web Of Science research areas: Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
ESI research areas: Engineering