The paper proposes a geoengineering technology and technical system “Land Coolers” for generating high-altitude cloud umbrella-shade zones for the purpose of controlled cooling of the Earth’s surface and surface atmosphere of the desert, a hot place with extreme survival conditions on our planet. This is achieved by obtaining cirrus-type clouds (Cirrus spissatus and Cirrostratus) using the resources of sea moisture, the discharge energy of nuclear or thermal stations (installations) and the dominant flow of high-altitude (geostrophic) winds. System “Land Coolers” (Cooler) can be used to reduce solar radiation not only in deserts and semi-deserts, but also in other dehydrated areas on Earth. The umbrella-cloud technogenic formation of an optically dense shade over the desert contributes to the arrival of marine clouds and rain first to the coastal zone, and then to its deeper areas to soften the desert climate and induce its subsequent greening. Universal system “Land Coolers” can also be used to solve the current problem of water scarcity by waste-free and environmentally friendly production of large volumes of natural fresh water of rain and drinking quality from atmospheric condensate in the sea area.