Results 281 to 290 of about 1,222,285 (331)

Evaporation Rate of a White Class A Evaporation Pan

Journal of Irrigation and Drainage Engineering, 2016
AbstractThis study experimentally investigates the influence of color on the evaporation rate of a Class A evaporation pan. Two Class A evaporation pans, one in the original galvanized metal color and the other painted white, are placed in the same meteorological station for 18 months.
Chia-Ren Chu, Ming-Hsu Li, Chien-Han Chen, Jih-Shun Liu   +3 more
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EVAPORATION FROM ATMOMETERS AND PANS

Canadian Journal of Plant Science, 1964
Daily measurements of evaporation from the porous disk and Bellani plate atmometers, the Class A evaporation pan, and the Experimental Farms buried tank were compared and related to daily measurements of temperature, radiation, wind, and vapor pressure.
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Converting from Pan Evaporation to Evapotranspiration

Journal of Irrigation and Drainage Engineering, 1998
Evapotranspiration is an essential component of the hydrologic cycle, and its accurate estimation is necessary for many hydrologic studies. Via the pan coefficient (\iK\ip), pan evaporation data are widely used to estimate grass reference crop evapotranspiration (\IETo\N).
N. S. Raghuwanshi, W. W. Wallender
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Investigations of evaporation from pans

Eos, Transactions American Geophysical Union, 1950
The analogy between heat transfer and evaporation yields theoretical equations for evaporation from pans into still air and into moving air under turbulent and laminar boundary conditions. It is found that empirical equations obtained in a wind tunnel (using a water surface covered by blotting paper to prevent spraying) agree well with these ...
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Mass Transfer Aspects of Pan Evaporation

Journal of Applied Meteorology, 1968
Abstract Experimental evaporation data which were obtained with shallow, square pans of different sizes and colors, were studied by means of regression analysis relating evaporation with the difference between the water vapor pressure at the water surface and in the air, pan size, and wind speed at various elevations.
Wilfried Brutsaert, Shaw Lei Yu
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A pan-lake evaporation relationship

Journal of Hydrology, 1966
Abstract It is shown that lake evaporation over periods down to a month or even less may be estimated from nearby pan observations (U.S. Class A pan) by summing the daily estimates from E L = 1.50 e L −e 4 e p −e 4 E P This takes account of the different water surface temperatures of lake and pan,
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Temperature variation in a class A evaporation pan

Journal of Hydrology, 1998
Abstract The thermal behaviour of a class A evaporation pan has been studied by doing an outdoor experiment and by modelling the energy budget of the pan in detail. The observations showed that the temperature of the water remains more or less homogeneous throughout the daily cycle. This means that the water inside the pan is well mixed.
Jacobs, A.F.G., Heusinkveld, B.G., Lucassen, D.C.   +2 more
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The unignorable impacts of pan wall on pan evaporation dynamics

Agricultural and Forest Meteorology, 2019
Abstract Open water evaporation (Eow), such as evaporation of lake and reservoir, is typically estimated by observations of different pans. The observation networks of pan evaporation (Epan) were established and maintained worldwide for a long history. All the pans in the world consist of water body and pan wall, which includes side wall, pan rim and
Kaiwen Wang, Xiaomang Liu, Changming Liu, Xiaohua Yang, Peng Bai, Yuqi Li, Zharong Pan   +6 more
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Relationship of can evaporation to pan evaporation and evapotranspiration

Journal of Geophysical Research, 1963
This paper presents a statistical comparison of evaporation from quart cans and a class A Weather Bureau pan for a humid and a semiarid area. Correlations of can evaporation with pan evaporation were significant, and correlation with evapotranspiration was as good as that of pan evaporation. The results indicate that small cans merit consideration as a
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Evaporation pan isotopic behavior as an index of isotopic evaporation conditions

Geochimica et Cosmochimica Acta, 1977
The stable isotope content of moisture (δE) removed by evaporation from a well mixed water body with no inflow is related to the isotopic content of the liquid (δ) by the equation m = (δE − δ)/(δ − δs). where δs is the isotopic 'steady state' of the liquid for given evaporation conditions, achieved as the liquid volume goes to zero, and m is a measure ...
J.A Welhan, P Fritz
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