|atmosphere: Gaseous layer surrounding a planet; the whole mass of air surrounding the earth. climate: The prevailing or normal pattern of weather at a place, or in a region, averaged over a long period of time; in contrast to weather, which is the state of the atmosphere at a particular time.|
current: A smooth and steady onward movement of a fluid (i.e., liquid or gas). The part of any body of fluid that has a continuous onward movement.
density: Mass per unit volume of a substance. Usually expressed as grams per cubic centimeter. For ocean water with a salinity of 35 at 0°C, the density is 1.028 grams per cubic centimeter.
eddy: A current of any fluid forming on the side of or within a main current. It usually moves in a circular path and develops where currents encounter obstacles or flow past one another.
precipitation: Water released from the atmosphere in the form of rain, snow, hail, or sleet from the atmosphere onto Earth's surface.
primary productivity: The amount of growth and reproduction of organisms that only need sunlight, water and basic nutrients.
solar energy: Thermal and electromagnetic energy from the sun.
system: 1) A regularly interacting or interdependent group of items forming a unified whole. 2) A manner of classifying. 3) A group of interacting bodies under the influence of related forces.
tracer: An identifiable substance that can be followed through the course of a physical or biological process providing information on the pattern of events in the process or on the redistribution of the parts or elements involved.
tropics: The low-latitude climatic zones centered on the equator, extending between the tropics of Cancer and Capricorn (i.e., 23° N and 23° S latitude), and characterized by year-round hot weather.
lunedì 24 ottobre 2011
Acquarius :Overview: Why study the ocean?
Labels: nasas mission part 2