Taros (T'ros) - Climate and Environment: Taros' climate could be described in a single word: hot. The coolest climates were in the highly mountainous polar regions, although they were never cold enough for water ice to form and it was hottest in the deep deserts. The nights on Taros are extremely cold, with little cloud cover. The major proportion of the evaporated water condenses and returns to the surface during the night.There is minimal recorded precipitation, less than 1 millimeter per annum. Taros was divided into four principle climatic regions; mountains, arid deserts, semi-arid deserts and seas. Shifting sands and bare rock covered 95% of the planet's surface. The largest region is the mountains.Low mountainous highlands cover 40% of the planet's surface. Ancient and heavily eroded by the desert sands, they are not tall, but are extremely rugged. There are no major routes through the mountain regions and no known settlements. They remain an unexplored desert wilderness.The second largest region of the planet are the arid deserts. The Great Sand Seas are uninhabitable by Humans or T'au and whilst there may be vast mineral resources buried beneath the sands the logistics of working in such a hostile environment with very high temperatures, no water supply, high winds and the threat of large sandstorms make it impractical. Most of the deserts also remain unexplored wildernesses Semi-arid regions, concentrated around the coasts are mostly barren, rocky badlands.At ground level, strong, sand-filled winds are commonplace. The few seas help to mediate Taros' (T'ros') extreme temperatures. Surrounding the small seas are the inhabited areas of semi-arid desert. These regions are home to the planet's hydro-farmers. There are two main seas on Taros called the Ak-Sai and the Em-Sai.These small, landbound seas are Taros' only source of surface water and were probably artificially created as part of the planet's terraforming by Humanity during the Dark Age of Technology. Today the seas are highly alkaline, but provide two-thirds of the population's water supply from hydro-processing.Hot air rising from the deep Tarosian deserts collides with the cooler air from over the polar highlands' mountainous regions. The pressure difference causes a high-speed river of air in the planet's upper atmosphere. This air stream can reach incredible speeds, up to 400 miles per hour.This pressure system dominates the climate of Taros. As the small amount of water in the air condenses to form the wispy clouds common to the skies of Taros, in the hottest areas these begin to form localised storm clouds, heavily laden with water vapour.The storm clouds rise on hot thermals. If they meet one of the fast-moving air streams, the top of the cloud begins to rotate in the fast-moving wind. This spinning force radiates down through the cloud, spinning faster and faster to form a hurricane. These hurricanes can be huge and blow for days on the surface of Taros.Sucking up huge amounts of sand, these become the sandstorms called Sand Devils by the local population. Most blow themselves out in the deep deserts, but occasionally Sand Devils destroy water farms or mining facilities.