RADIATION DATABASES

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RADIATION DATABASES

SR5999(J) database contains the values of solar radiation coming in the absence of atmosphere to the earth ellipsoid surface in J, calculated according to the calculation methodology; SR5999(J/m²) database contains values in J/m².

Column 1 contains tropical years (A.D.). Columns 2–13 (part 1) present values of solar radiation for 1/12 of each tropical year (starting with the vernal equinoctial point). The duration of these time intervals corresponds to consecutive 30 degree sectors of Sun longitude (within its visible annual motion range). Columns 14–17 (part 2) present values of solar radiation coming to the earth ellipsoid surface in the absence of atmosphere for the following astronomic seasons: spring, summer, fall and winter (for the northern hemisphere) respectively. Columns 18 and 19 present values of solar radiation coming to the ellipsoid surface in the absence of atmosphere for the 6 months of winter and summer (for the northern hemisphere). Column 20 shows values of solar radiation coming to the ellipsoid surface in the absence of atmosphere for a tropical year.

Allocation of latitudinal fragments in the database is given in the table

Database SR5999(J)	Geographical latitude (°)		Database SR5999(J/m²)
Part 1, Part 2	N O R T H E R N	85 – 90
Part 1, Part 2		80 – 85
Part 1, Part 2		75 – 80
Part 1, Part 2		70 – 75
Part 1, Part 2		65 – 70
Part 1, Part 2		60 – 65
Part 1, Part 2		55 – 60
Part 1, Part 2		50 – 55
Part 1, Part 2		45 – 50
Part 1, Part 2		40 – 45
Part 1, Part 2		35 – 40
Part 1, Part 2		30 – 35
Part 1, Part 2		25 – 30
Part 1, Part 2		20 – 25
Part 1, Part 2		15 – 20
Part 1, Part 2		10 – 15
Part 1, Part 2		05 – 10
Part 1, Part 2		00 – 05
	S O U T H E R N	00 – 05
		05 – 10
		10 – 15	Part 1, Part 2
		15 – 20
		20 – 25
		25 – 30	Part 1, Part 2
		30 – 35
		35 – 40
		40 – 45	Part 1, Part 2
		45 – 50
		50 – 55
		55 – 60	Part 1, Part 2
		60 – 65
		65 – 70
		70 – 75	Part 1, Part 2
		75 – 80
		80 – 85
		85 – 90	Part 1, Part 2

The estimation of accuracy of the calculated values specified in the methods of calculation. Presented in databases incoming solar radiation values are expressed significant numbers.