High-pressure area Hadley cells help form the subtropical ridge, steer tropical waves and tropical cyclones across the ocean and is strongest during the summer. The subtropical ridge also helps form most of the world's deserts. On English-language weather maps, high-pressure centers are identified by the letter H. Weather maps in other languages may use different letters or symbols. The direction of wind flow around an atmospheric high-pressure area and a low-pressure area, as seen from above, depends on the hemisphere. High-pressure systems rotate clockwise in the northern Hemisphere; low-pressure systems rotate clockwise in the southern hemisphere. The scientific terms in English used
Time pressure gauge (time reduction) by turning the gas control to low or by shutting off one burner. Seeing the increase in time will automatically indicate an increase in energy saving. Most notably the time pressure gauge could reduce carbon emissions in all air travel through increased fuel efficiency, while also reducing fuel cost. Furthermore, recently the airline industry is under pressure to reduce carbon emissions globally, and instruments such as the time pressure gauge could spearhead this movement. Time pressure gauge technology is relatively new, and not fully in widespread use. However, the software technology it uses is more integrated. A comprehensive