红外线的
日射强度计
辐射
辐照度
太阳辐照度
可见光谱
光合有效辐射
近红外光谱
光学
环境科学
遥感
材料科学
物理
大气科学
化学
地质学
生物化学
光合作用
作者
Albert Weiss,John M. Norman
标识
DOI:10.1016/0168-1923(85)90020-6
摘要
Measurements of total and diffuse, solar and visible (photosynthetically active, PAR) irradiance were made during portions of the summer months of 1979, 1980, and 1981 near Scottsbluff, NE. The objective of this experiment was to obtain equations to predict direct beam and diffuse irradiance in both the visible (PAR) and near-infrared wave bands from measurements of only the total incoming solar radiation. Relationships for potential values of direct and diffuse, visible and near-infrared radiation were established from “clear day” experimental data. Estimates of total visible (PAR) and near-infrared radiation were made by partitioning the measurement of solar radiation using estimates of potential visible and potential near-infrared radiation. Estimates of direct components in the visible and near-infrared were made with relationships developed from the experimental data. There was good agreement between predicted and measured values of the various components of solar radiation. In addition, a correction term for the measurement of diffuse solar radiation with a silicon cell pyranometer was developed.
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