Packaging Your Fragrances Properly. When shipping perfume bottles with the USPS, you need to take the time and care to prepare your shipments correctly to ensure they arrive in the hands of your customers in one piece. Perfume bottles are fragile and can be shattered in transit, if not packed carefully.
What is an air mass? An airmass is a large (usually thousands of miles across) volume of air that has horizontally uniform properties in terms of temperature, and to a lesser extent humidity. Airmasses acquire their properties from spending days to weeks over the same part of the Earth: say over northern Canada, the North Pole, the tropical Pacific Ocean, etc.
Continental Polar air masses (cP) are air masses that are cold and dry due to their continental source region. Continental polar air masses that affect North America form over interior Canada.n air mass originating over northern Siberia in winter may be indicated as cA. The stability of an air mass may be shown using a third letter, either k (air mass colder than the surface below it) or w (air mass warmer than the surface below it).