SUNSHINE HOURS AND SOLAR RADIATION AT THE REGION OF SANTA MARIA, RS: AVAILABILITY AND VARIABILITY

Ciência Rural

Schneider, Flávio Miguel²  Buriol, Galileo Adeli²  Estefanel, Valduino³  Berlato, Moacir Antonio¹ 

[1] UFRGS, PORTO ALEGRE;Universidade Federal de Santa Maria, Santa Maria

关键词: solar radiation;    sunshine hours;    disponibility;    variability;    probability;   

DOI  :  10.1590/S0103-84781991000200005

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

Availability variability of sunshine hours and total solar radiation at the Santa Maria (RS) region were determined. Data were colected at the Forest Experimental Station located in Boca do Monte, Experimental Station of Júlio de Castilhos and Grass Experimental Station of São Gabriel as well from the standart meteorological station located at the Federal University of Santa Maria. It was concluded that daily sunshine availability and total solar radiation at Júlio de Castilhos was greater than in São Gabriel and Santa Maria and the variability of these elements was high during all months but higher during winter. The probability of occuring more than one day without sunshine and days with global solar radiation less than 100 cal.cm-2 .day-1 and a sequency of more than one consecutive day with these levels was greater during winter month for the Santa Maria region.

【 授权许可】

CC BY-NC