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450 ¡0 500 400 to 450 350 to 400 300 to 350 250 to 300 200 to 250 150 to 200 100 to 150 50 to 100 Oto 50

Figure 3.1a,b,c. Average short-wavelength solar radiation on a horizontal plane at the Earth's surface (W m-2), for the months of January (a, above), April (b, below) and July (c, bottom) of 1997 (NCEP-NCAR, 1998).

Figure 3.1a,b,c. Average short-wavelength solar radiation on a horizontal plane at the Earth's surface (W m-2), for the months of January (a, above), April (b, below) and July (c, bottom) of 1997 (NCEP-NCAR, 1998).

solar radiation

solar radiation

400 to 450

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