A rapid method of computing areal rainfall

Chidley, T.R.E.; Keys, K.M.

doi:10.1016/0022-1694(70)90029-6

Cited by 17 publications

(6 citation statements)

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“…Unwin (1969) presents an example of this method compared with regression analysis. Chidley and Keys (1970) present an example of the procedure and compare it to arithmetic, Thiessen, and isohyetal methods. Their method can include the effect of other parameters such as altitude and exposure; however, Tabios and Salas (1985) found that polynomial interpolation gave the poorest result when compared to Thiessen and inverse distance.…”

Section: Polynomial Interpolationmentioning

confidence: 99%

Precipitation

1996

Hydrology Handbook

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Section: Polynomial Interpolationmentioning

confidence: 99%

Precipitation

1996

Hydrology Handbook

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“…Recently, several papers (Pullen et al, 1966;Unwin, 1969;Chidley and Keys, 1970) have used the method of trend surface analysis, or variants of it, to estimate the distribution of precipitation; integration in some form providing an estimate of the areal rainfall. Another paper (Akin, 1971) has introduced the method of finite element analysis.…”

Section: Introductionmentioning

confidence: 99%

Calculation of Areal Rainfall Using Finite Element Techniques With Altitudinal Corrections

Hutchinson¹,

Walley

1972

Hydrological Sciences Bulletin

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A procedure for calculating areal rainfall, based on recent innovations in finite element analysis, is presented. The procedure involves the use of interpolation functions, allowing an accurate representation of the shape and relief of the catchment, with numerical integration performed by Gaussian quadrature. Each raingauge is allotted two weights, one associated with the rainfall reduced to a datum, and the other with the rainfall-altitude relationship. The latter weight effectively removes any systematic errors due to altitudinal bias of the network.The rainfall-altitude relationship, derived for individual storms and for synoptic situations for a small area, is used to show that errors due to the bias of the network can be considerable. RESUMEUn procede pour Ie calcuI de precipitation-surface, base sur des innovations recentes dans Ie domaine de l'analyse des elements finis est presentee Ce procede comparte l'emploi des fonctions d'interpolation, ce qui permet une representation exacte de la forme et du relief du bassin de captage, avec l'integration numerique qui s'effectue par la quadrature de Gauss. Chaque pluviometre est affecte de deux poids, l'un qui correspond a la precipitation ramenee a une donnee, l'autre qui correspond au rapport entre la precipitation et l'altitude. Ce dernier poids supprime toutes Ie erreurs systematiques caussees par la deviation de I'altitude du reseau.Le rapport entre la precipitation et l'altitude, derive pour Ie cas des averses individuelles et pour les situations synoptiques, pour une petite surface, est utilise pour demontrer que les erreurs causees par la deviation du reseau peuvent ctre considerables.

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“…The increasing use of computer technology in hydrologic modeling calls for a rapid method of estimating mean areal rainfall. Of this necessity two types of approaches have evolved in the recent years: (1) trend surface analysis (Chidley and Keys, 1970;Mandeville and Rodda, 1970;Pentland and Cuthbert, 1971;Solomon, et al, 1968;Unwin, 1969), (2) reciprocal distance squared method (Wei and McGuiness, 1973). The details of these approaches can be found in the cited references.…”

Section: Introductionmentioning

confidence: 99%

A Rapid Method of Estimating Mean Areal Rainfall1

Singh

1976

J American Water Resour Assoc

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ABSTRACT. A special case of generalized trend surface analysis is examined. This includes a linear surface. It is shown that for most hydrologic problems this case determines mean areal rainfall sufficiently accurately. Based on this conclusion, equations for rapid computation of mean areal rainfall are derived for this linear case. Results of the linear case are compared with other traditional methods of estimating mean areal rainfall.

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A rapid method of computing areal rainfall

Cited by 17 publications

References 1 publication

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Calculation of Areal Rainfall Using Finite Element Techniques With Altitudinal Corrections

A Rapid Method of Estimating Mean Areal Rainfall1

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