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becomes unbounded making the Bowen ratio a poor choice of variable for use in formulae, especially for arid surfaces. For this reason the evaporative fraction is sometimes a more appropriate choice of variable representing the relative contributions of the turbulent energy fluxes to the surface
39:(the energy required during a change of state, without a change in temperature). The Bowen ratio is generally used to calculate heat lost (or gained) in a substance; it is the ratio of energy fluxes from one state to another by
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is less than one, a greater proportion of the available energy at the surface is passed to the atmosphere as latent heat than as sensible heat, and the converse is true for values of
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whose theoretical work on evaporation to air from water bodies made first use of it, and it is used most commonly in
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488:"The ratio of heat losses by conduction and by evaporation from any water surface"
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The Bowen ratio is an indicator of the type of surface. The Bowen ratio,
27:
for a surface that has moisture. Heat transfer can either occur as
388:{\displaystyle {EF={\frac {Q_{e}}{Q_{e}+Q_{h}}}={\frac {1}{1+B}}}}
421:, is less than one over surfaces with abundant water supplies.
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10.1175/1520-0477(1995)076<2433:TSBTBR>2.0.CO;2
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The Bowen ratio is related to the evaporative fraction,
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The
Weather and Climate of Australia and New Zealand
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74:The Bowen ratio is calculated by the equation:
531:Bulletin of the American Meteorological Society
587:National Science Digital Library - Bowen Ratio
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565:. Oxford University Press. pp. 309–310.
561:Sturman, Andrew P.; Tapper, Nigel J. (1996).
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117:{\displaystyle B={\frac {Q_{h}}{Q_{e}}}}
182:In this context, when the magnitude of
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250:{\displaystyle {Q_{e}\rightarrow 0}}
31:(differences in temperature without
16:Describes heat transfer for surfaces
729:. You can help Knowledge (XXG) by
672:. You can help Knowledge (XXG) by
615:. You can help Knowledge (XXG) by
526:"The Story behind the Bowen Ratio"
14:
43:and latent heating respectively.
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451:Temperate forests and grasslands
23:is used to describe the type of
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1:
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796:Mathematical physics stubs
791:Atmospheric thermodynamics
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806:Atmospheric science stubs
304:, through the equation,
151:is sensible heating and
46:The ratio was named by
668:-related article is a
611:-related article is a
517:10.1103/PhysRev.27.779
430:Range of Bowen ratios
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222:greater than one. As
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524:Lewis, J. M. (1995).
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171:{\displaystyle Q_{e}}
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144:{\displaystyle Q_{h}}
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801:Thermodynamics stubs
609:mathematical physics
486:Bowen, I.S. (1926).
459:Tropical rainforests
443:Semi-arid landscapes
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723:atmospheric science
721:This article about
544:1995BAMS...76.2433L
509:1926PhRv...27..779B
414:{\displaystyle {B}}
781:Engineering ratios
776:1926 introductions
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297:{\displaystyle EF}
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538:(12): 2433–2443.
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270:{\displaystyle B}
215:{\displaystyle B}
195:{\displaystyle B}
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52:Ira Sprague Bowen
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731:expanding it
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257:, however,
70:Formulation
60:meteorology
37:latent heat
21:Bowen ratio
770:Categories
480:References
438:>10.0
241:→
64:hydrology
470:<0.1
462:0.1-0.3
454:0.4-0.8
446:2.0-6.0
124:, where
540:Bibcode
505:Bibcode
435:Deserts
569:
50:after
725:is a
664:This
607:This
491:(PDF)
35:) or
727:stub
670:stub
613:stub
567:ISBN
62:and
19:The
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513:doi
66:.
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499:.
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619:.
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408:B
395:.
379:B
376:+
373:1
369:1
364:=
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348:+
343:e
339:Q
332:e
328:Q
322:=
319:F
316:E
292:F
289:E
265:B
244:0
236:e
232:Q
210:B
190:B
164:e
160:Q
137:h
133:Q
108:e
104:Q
98:h
94:Q
88:=
85:B
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