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.
Air Masses. The air masses in and around North America include the continental arctic (cA), maritime polar (mP), maritime tropical (mT), continental tropical (cT), and continental polar (cP) air masses. Credit: NOAA. Air is not the same everywhere.In North America, for example, cold and dry air covering thousands of miles flows south from the Arctic, especially in winter, and warm moist air flows south from the Gulf of Mexico.These different types air are called air masses.he word that describes humidity (maritime or continental) is paired with the word that describes temperature (equatorial, tropical, polar or arctic). For example, if an air mass forms over a tropical ocean, it is called maritime tropical.