By lasering Mars, we are increasing the maximum temperature, which increases the difference between the maximum and minimum temperatures on Mars, as well as the difference between maximum and minimum air pressures, which increases the cloud speed. In Universe Sandbox we simulate this difference in air pressure between an object’s equator and its poles based on the difference between its Minimum and Maximum Temperature, which are usually at the poles and equator. This wind moves faster, increasing the cloud speed, the larger the temperature difference between the equator and the poles is, since this will create a larger air pressure difference. The high pressure air at the equator moves to the lower pressure air at the poles, creating a wind that moves the clouds with it. The higher temperatures at the equator lead to a higher air pressure (essentially the weight of the atmosphere) at the equator, while colder temperatures at the poles lead to lower air pressure. This is because objects are (generally) warmer at their equator and colder at their poles. In reality wind is initially created going in an unexpected direction – it travels outwards from the equator to the poles instead of rotating around the equator. Simulating realistic weather patterns faster than real time (one second per second) is very difficult, especially with your average computer. However, we determine the speed at which clouds rotate around an object’s surface from two simulated effects. As we talk about in our Snow Simulation ScienceLog, this isn’t currently possible without a supercomputer, so for now our clouds are drawn from pre-made cloud pictures. To simulate completely realistic clouds, we would need to do a full weather simulation, including the water cycle. While our in-game guide, which can be found under Guides > Science > Clouds, shows off these new features, we wanted to explain them in a little more depth. One of our recent improvements to Universe Sandbox includes realistically simulating the speed at which clouds rotate around objects, like planets and moons. The user experience is almost unbeatable.Universe Sandbox now realistically simulates the speeds at which clouds rotate. However, if you want to make the most of its possibilities, you're better off with a graphics cards with 1GB of VRAM and Oculus or HTC Vive virtual reality headsets. The game is currently at early access stage and it's not excessively demanding in terms of hardware requirements: a dual-core processor at 1.6 GHz.
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