Observed and modelled solar radiation components in sugarcane crop grown under tropical conditions

被引：3

作者：

dos Santos, Marcos A. ^{[1
]}

de Souza, Jose L. ^{[1
]}

Lyra, Gustavo B. ^{[2
]}

Teodoro, Iedo ^{[1
]}

Ferreira Junior, Ricardo A. ^{[1
]}

dos Santos Almeida, Alexsandro C. ^{[3
]}

Lyra, Guilherme B. ^{[1
]}

de Souza, Renan C. ^{[1
]}

Maringolo Lemes, Marco A. ^{[1
]}

机构：

[1] Univ Fed Alagoas, Dept Agrometeorol, Maceio, AL, Brazil

[2] Univ Fed Rural Rio de Janeiro, Dept Meteorol & Climatol, Seropedica, RJ, Brazil

[3] Fed Univ Grande Dourados, Agr Sci Fac, Dourados, MS USA

来源：

INTERNATIONAL AGROPHYSICS | 2017年 / 31卷 / 02期

关键词：

sugarcane; albedo; net radiation; NET-RADIATION; WATER-USE; ENERGY-BALANCE; EVAPOTRANSPIRATION; RATIO;

D O I：

10.1515/intag-2016-0047

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The net radiation over vegetated surfaces is one of the major input variables in many models of soil evaporation, evapotranspiration as well as leaf wetness duration. In the literature there are relatively few studies on net radiation over sugarcane crop in tropical climates. The main objective of the present study was to assess the solar radiation components measured and modelled for two crop stages of a sugarcane crop in the region of Rio Largo, Alagoas, North-eastern Brazil. The measurements of the radiation components were made with a net radiometer during the dry and rainy seasons and two models were used to estimate net radiation: the Ortega-Farias model and the Monteith and Unsworth model. The highest values of net radiation were observed at the crop development stage, due mainly to the high indices of incoming solar radiation. The daily average albedos of sugarcane at the crop development and mid-season stages were 0.16 and 0.20, respectively. Both models showed a better fit for the crop development stage than for the mid-season stage. When they were inter-compared, Monteith and Unsworth model was more efficient than Ortega-Farias model, despite the dispersion of their simulated radiation components which was similar.

引用

页码：231 / 241

页数：11

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