辐射计
环境科学
大气科学
平均辐射温度
辐射
辐射强度
辐射能
大气(单位)
辐射通量
水蒸气
天空
阳光
气象学
物理
光学
气候变化
地质学
海洋学
作者
Alice M. Stoll,James D. Hardy
出处
期刊:Transactions
[Wiley]
日期:1955-04-01
卷期号:36 (2): 213-226
被引量:15
标识
DOI:10.1029/tr036i002p00213
摘要
Thermal characteristics of the summer and winter Alaskan climates were evaluated by two methods: (1) direct measurement of solar and low‐temperature radiation exchange by means of the panradiometer (an absolute radiation‐measuring device described briefly) and by computation from the measured values, the mean radiant temperature of the environment; and (2) the direct measurement of the mean radiant temperature of the environment with the thermo‐radiometer (which instrument and method of use is also described briefly) and by computation from these measurements, the solar contribution to the total radiation. During the summer period, the solar radiant flux occasionally exceeded 800 kg cal/m 2 hr. The mean radiant temperature of the environment varied from 8°C to 51°C undergoing large and sometimes rapid changes as the intensity of solar radiation varied with sky cover. During the winter period, the solar radiation attained only ten to 30 pet of the summer intensity. The mean radiant temperature varied from −3°C to −55°C and depended strongly on the radiant temperature of the sky, a concept introduced for simplification of the radiation‐exchange problem. The latter temperature was greatly influenced by the water vapor content of the atmosphere.
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