Chapter 10

A tropical low pressure system is classified as a tropical cyclone when the wind speed reaches 118 km per hour and the air pressure is 980 millibars or lower. (c) State the relationship between air pressure and wind speed. ... (symbol); 2.4 mg per dm3 / falls from 12.4/5 to 10.0; At – 2.4 – 2.5 [2] ... The figures are in parts per thousand ... ................
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