This is based on 16 tower ounces, each ounce divided as the tower ounce. It never became a legal standard in England; the use of this pound waxed and waned with the influence of the Hansa itself. A London pound was equal to 7,200 troy grains (16 tower ounces or, equivalently, 15 troy ounces).
The state of the atmosphere at a particular time and place. Weather is described by variable conditions such as temperature, humidity, wind velocity, precipitation, and barometric pressure. See also atmosphere; climate; clouds; lightning; rain; snow; sun; thunder; wind.
Weather and climate are different. Weather is a short term description of the air in an area measured by temperature, precipitation, humidity, wind, and other factors. Climate is usually defined as the weather conditions in an area over a long period of time. Climate is determined by 1 or more of the 5 causes of climate. There are 12 different types of climate found on Earth. Each of the 12 climate types are grouped into 5 categories, except 1 (Highland). Climates in the same category share characteristics and usually are found in the same area. Climates change over time, usually the change is very slow. The Earth has experienced many different climates over its 4.54 billion years.