Mollweide projections

We believe J.W. Linnett, in his Methuen Monograph, Wave Mechanics and Valency Theory, 1956, was the first to use elliptical projections to display the phases of the spherical harmonics on the unit sphere. We adopt a projection in which both 0 and (f) coordinates are plotted on linear scales on the minor and major axes of a 30° ellipse of eccentricity a/3/2. This cartographic device is the one proposed by Apianus in 1524, and known as the Apianus II projection. In our early work on the Spherical Shell method we called this a modified Mollweide projection, reversing the historical sequence. 

Figure 5.71. Geographical distribution of Januctry average space heating requirements in the year 2050, based on satellite measurements of temperature (on a gross scale of an approximately 50-km grid) in combination with the scenario s assumed building standards. The variations thus reflect both dimate differences across Denmark and differences in heated space per unit cell. The map uses the Mollweide area-preserving projection, in contrast to the straight longitude-latitude co-ordinate system of, e.g.. Fig. 5.70 (Sorensen ei al., 2001).

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