Complex sentence: In 1961, Manfred Siebert suggested that absorption of solar insolation by tropospheric water vapour might account for the reduction of the diurnal tide, but he failed to include a role for stratospheric ozone.
Split into simpler sentences: In 1961, Manfred Siebert suggested that absorption of solar insolation by tropospheric water vapour might account for the reduction of the diurnal tide. However, he failed to include a role for stratospheric ozone.