Land: role in the climate system (and subjects related to it) Land-sea contrast in surface energy and water balance Capacity of energy storage beyond one season Possibility of evaporation of water Climatic characteristics by land-sea contrast (and dry-wet contrast in land) Annual cycle of air temperature ... amplitude and phase Amplitude of diurnal cycle of surface temperature Distribution of seasonal mean high and low pressure centers Monsoons Distribution and photosynthesis of land plants Climatic constraint to land plants ≒ contraints to evaporation availability of energy availability of water Seasonal cycle of water quantity Seasonal cycle of water balance in large river basins in continents Seasonal relocation of mass between land, sea & atmosphere (trial calc.)