The number of days with solar radiation above or below specific values

Typical solar radiation data for Oman

Statistical analysis of measured global insolation data for Pakistan

A MESOSCALE RAD IATION STUDY OF THE CACHE VALLEY by Nolasco G. Baldazo, Master of Science Utah State University, 1970 Major Professor: Dr . Inge Dirmhirn Depar tment: Soils and Me teoro logy The radiation climate of Cache Valley was es tablished f rom the con tinuous recordings of global and diffuse sky r adiation at Utah State University campus from June 1968 to July 1969 and August 1968 to July 1969, respec t ively. The influence of topographic features during summer and winter conditions a t seven representative locations running on an east-west direction across the valley were dete rmined by making shor t t erm measurements on clear days. A comparison of the clear day average global radiation on app r oximate dates of the same solar declination shows higher values during late winter and spring than t he values during late summer and autumn. This is mainly the influence of the higher atmospheric water vapor during the wa rmer months. An interesting fact is, that not only the direct , but also the scattered radiation shows higher values during t he spring months . This is caused by additional reflection from the snow-covered mountain slopes . In the curve showing th e distribution of the diffuse sky radiation on completely cloudy days, t he effect of the mul t iple reflection between the ground surface and t he bases of clouds is very prominent in the period when there is snow on

A Mesoscale Radiation Study of the Cache Valley

The beam radiation is attenuated by the presence of clouds in its path and by the various elements of the cloudless atmosphere. The depletion of the direct beam by the clouds depends on the type of clouds, their thickness, and the number of layers. When the sky is completely covered by clouds, the number of bright sunshine hours recorded will be nil. Under such a condition, all radiation received on the earth will be of a diffuse nature. On the other hand, on a completely cloudless day, a certain number of bright sunshine hours will be recorded, and diffuse radiation will be quite minimal. The amount of diffuse radiation depends on both the solar altitude and the cloud cover. Under clear-sky conditions and for a given atmosphere, solar altitude is the governing parameter. The effect of cloud cover increases as the amount of sky covered by clouds increases, and it also depends on the geometric distribution of the clouds with respect to the solar beam.

Solar radiation under cloudy skies

A major reversal in the large-scale 7Oo-nlb. 1nean circulation over North America and adjacentm oceans occurred from the first half to the last half of August' 1960. This intra-monthly  change  contributed  substnntiallJto the weat'her and circulation of the whole month. I t is purticularly notable because surnnler months arc gencrnlly subject' to considerable persistence. Conscquenccs of the intra-monthly circulat,ion change included A readjustn~ent, of the weather anomalies bot'h within the month and fronl the preceding montll.

The number of days with solar radiation above or below specific values

Citations

Typical solar radiation data for Oman

Statistical analysis of measured global insolation data for Pakistan

A Mesoscale Radiation Study of the Cache Valley

Solar radiation under cloudy skies

THE WEATHER AND CIRCULATION OF AUGUST 1960: A Month Dominated by a Circulation Reversal

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