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Solar constant

About: Solar constant is a research topic. Over the lifetime, 967 publications have been published within this topic receiving 29647 citations.


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TL;DR: The analysis of the intervening three years of spin-mode data, which have reduced coverage, has begun as discussed by the authors, and it is found that the correlation persists at about the same qualitative level, but with increased scatter that can be attributed to the smaller amount of data.

2 citations

Journal ArticleDOI
TL;DR: The intensity of solar radiation in the Earth's direction from the Sun is approximately 1.361 kW/m2, a number also called the "solar constant" as mentioned in this paper.
Abstract: The intensity of solar radiation in the Earth’s direction from the Sun is approximately 1.361 kW/m2, a number also called the ‘solar constant’. Accordingly, it is estimated that the power Earth receives is about 96 billion kilowatts from the Sun each second. If this colossal and unlimited energy could be more fully utilized, our dependence on fast dwindling fossil cache will be drastically reduced. Solar energy is available in various forms such as direct solar radiation, wind, wave power, rain (in the form of hydropower), photosynthesis and ocean thermal gradients. Among these, the direct conversion of sunlight into electricity is clean and attractive. This article highlights various routes to directly harness electricity from sunlight.

2 citations

Journal Article
TL;DR: In this article, the authors analyzed the land surface radiation characteristic over semi-arid region of the Loess Plateau based on the radiation data observed at Dingxi Arid Meteorology and Ecological Environment Experimental Station.
Abstract: The land-surface radiation characteristic over semi-arid region of the Loess Plateau is analyzed based on the radiation data observed at Dingxi Arid Meteorology and Ecological Environment Experimental Station. It is showed that the radiant intensity is very high and the maximum of instantaneous global radiation is beyond \{1 000\} W\5m~(-2), sometimes beyond solar constant in summer. The ratio of the daily average global radiation during spring wheat growth to one on a clear day is between 0.6 and 0.8, and the ratio of the daily net radiation between 0.4 and 0.6, and likewise over bare soil. In other words, it means that the cloud and rainfall can make great influence on land-surface radiation. In addition, the fluctuation of the mean daily albedo is high and the maximum and the minimum is 0.24 and 0.11 respectively during experiment. It is because the water droplet adhering to the leaf of wheat that causes the increasing of the albedo and the increasing of wind speed can induce considerable variation of the albedo. In short, the daily albedo under different types of synoptic conditions shows as different characteristic because of integrated affect which caused by soil water content, synoptic conditions and solar altitude angle.

2 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20238
202215
20219
20202
201911
201810