The influence of a windbreak on evaporation

Lomas, J.; Schlesinger, E.

doi:10.1016/0002-1571(71)90100-2

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…It is generally agreed that evaporation from sheltered areas decreases because of the decrease in both wind speed and advection (Skidmore & Hagen 1970;Lomas & Schlesinger 1971). Lomas & Schlesinger (1971) and Miller, Bagley & Rosenberg (1974), however, stated that the shelter effect on evaporation is appreciable only when advection occurs. In this respect, the present study area, which is located 2 km leeward from the ocean, may not present a serious inflow problem of advective energy, although the slower rate of evaporation from the sheltered site may still form an advantage for plant growth in the transitional and dry seasons.…”

Section: Discussionmentioning

confidence: 58%

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Hydrometeorological differences between opposite valley slopes and vegetation asymmetry in Hawaii

Noguchi

1992

J Vegetation Science

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Abstract. Hydrometeorological observations over a 15‐month period and the evaluation of calculated water balance components across a selected valley in the northeast trade‐wind environment in Hawaii showed the following: A large reduction in wind speed and evaporation occurred on the upper protected west‐facing slope as compared with an exposed ridge immediately in front of it and within a short horizontal distance. Can evaporation values measured across the valley closely reflect the wind exposure and the availability of energy at each station. In terms of Penman potential evapotranspiration, the ridge station was again found to be the most exposed and the upper leeward slope the most protected. The upper protected west‐facing slope was comparatively more favourable for vegetation development in terms of the annual soil moisture conditions (both measured and calculated) and protection against mechanical damage by wind and air‐borne salt; all the other parts of the slopes were exposed and occasionally received severe salt spray damage in winter. Most probably, these factors have contributed to the difference in speed of vegetation recovery from the disturbance, thus producing a, temporary, vegetation asymmetry.

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Section: Discussionmentioning

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Hydrometeorological differences between opposite valley slopes and vegetation asymmetry in Hawaii

Noguchi

1992

J Vegetation Science

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“…Blundell (1974), in humid northern England, found that evaporation from tanks was not significantly affected behind a shelterbelt of deciduous trees. According to Lomas and Schlesinger (1971), without advection, windbreaks do not influence Class A pan evaporation; with advection, evaporation is significantly reduced.…”

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confidence: 99%

Influence of Tall Wheatgrass Wind Barriers on Soil Drying¹

Aase¹,

Siddoway

1976

Agronomy Journal

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Virtually no direct measurements have been made to determine if wind barriers, in fact, do affect evaporation from bare soils. Our objective, therefore, was to quantify the effect of a tall wheatgrass (Agropyron elongatum) wind barrier system on soil drying from fallow soil compared with open‐field fallow. The experiment was done on a Williams loam soil (fine‐loamy, mixed, frigid family of Typic Argiborolls) near Sidney, Mont. We applied a 3.8‐cm irrigation and sampled for soil water content at half‐hour intervals and small depth increments to 10 cm. Ancillary data collected included wind in the barrier interval and in the open, plus global radiation, air temperature, and humidity in the open. The north‐south oriented system consisted of 8 double‐row tall wheatgrass barriers 1.2 m tall, 183 m long, with seven 15 m wide cropping intervals. For the study, we selected three locations in the third interval from the east, along with a location on an unprotected (check) area outside the influence of the barriers. The surface 4 cm of soil inside the barrier system remained wetter for about 3 days after the irrigation as compared with the check area. The drying rate remained constant at all four locations until approximately noon the day after irrigation. Thereafter, drying rate was influenced by exposure to wind. There are many periods of small, intermittent precipitation events during April and May when tall wheatgrass barriers could benefit a crop by creating a suitable soil water environment for seed germination, plant emergence and establishment, and soil resistance to wind erosion.

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The influence of weather variability on evaporation leeward of A medium porous barrier

Rollin

1984

J. Climatol.

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Black porous disc atmometers were used to measure daily evaporation ( E ) at a distance of 4H (where H is barrier height) leeward of a medium porous hedge and in the open. The modification of E at the sheltered position was defined, in relative terms, as the percentage of the sheltered E to that in the open (relative E ) and in absolute terms as the difference between the open and sheltered E totals. Although relative E was found to vary as a linear function of the relative wind (RW), E differences varied also with the meteorological conditions influencing the 'evaporative climate', identified here by the weather parameters: cloud cover, relative humidity and wind speed. For a particular value of relative E , the E differences were greatest on days with no cloud, low humidity and moderate wind speed and least on cloudy, humid days with low wind speed.

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The influence of a windbreak on evaporation

Cited by 10 publications

References 4 publications

Hydrometeorological differences between opposite valley slopes and vegetation asymmetry in Hawaii

Hydrometeorological differences between opposite valley slopes and vegetation asymmetry in Hawaii

Influence of Tall Wheatgrass Wind Barriers on Soil Drying¹

The influence of weather variability on evaporation leeward of A medium porous barrier

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The influence of a windbreak on evaporation

Cited by 10 publications

References 4 publications

Hydrometeorological differences between opposite valley slopes and vegetation asymmetry in Hawaii

Hydrometeorological differences between opposite valley slopes and vegetation asymmetry in Hawaii

Influence of Tall Wheatgrass Wind Barriers on Soil Drying1

The influence of weather variability on evaporation leeward of A medium porous barrier

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Influence of Tall Wheatgrass Wind Barriers on Soil Drying¹