Climate and Desertification: A Revised Analysis

airstreams albedo America analysis anomalies areas arid and semi-arid arid zone Australia Bowen ratio Bryson CAgM Charney circulation models climatic change climatic variation climatology cloud seeding CO2 build-up deflation desert margin desertification desertification process desiccation drier drought dry belt dry climates dry world dryland dryness ratio dust dynamical earth ecosystems effect erosion evaporation evapotranspiration experiments favourable feedback Figure Flohn GARP GENEVA global Hare heat hemisphere hence high pressure belt Holocene humid increase interannual Kutzbach Lake land latitude Lettau major mean annual meteorological and hydrological microclimate modification moisture monsoon natural North Africa northern occur oceans parameters periods persistence precipitation predicted prolonged radiative rain rainfall regions Rosenberg Sahara Sahel Sahelian drought savanna season Secretary-General simulation soil solar constant solar radiation South southern sub-tropical high pressure subsidence suitable surface albedo surface temperature tropical UNCOD UNEP variability vegetation cover weather West Africa World Climate Programme