Term
|
Definition
| The process by which a liquid changes into a gas |
|
|
Term
|
Definition
| The process by which water vapor becomes a liquid |
|
|
Term
|
Definition
| Any form of water particles- liquid or solid- that falls from the atmosphere and reaches the ground |
|
|
Term
|
Definition
| A model that illustrates the movement and exchange of water among the earth, atmosphere, and oceans |
|
|
Term
|
Definition
| The process whereby ice changes directly into water vapor without melting |
|
|
Term
|
Definition
| A process that occurs in subfreezing air when water vapor changes directly to ice without becoming liquid first |
|
|
Term
|
Definition
| An atmospheric condition whereby the level of water vapor is the maximum possible at the existing temperature and pressure |
|
|
Term
|
Definition
| A general term that refers to the air's water vapor content |
|
|
Term
|
Definition
| The mass of water vapor in a given volume of air |
|
|
Term
|
Definition
| The ratio of the mass of water vapor in a given parcel to the total mass of air in the parcel |
|
|
Term
|
Definition
| The ratio of the mass of water vapor in a given volume of air to the mass of dry air |
|
|
Term
|
Definition
| The pressure exerted by the water vapor molecules in a given volume of air |
|
|
Term
| Saturation Vapor Pressure |
|
Definition
| The maximum amount of water vapor necessary to keep moist air in equilibrium with a surface of pure water or ice. Maximum amount of water vapor that the air can hold at any given temperature and pressure |
|
|
Term
|
Definition
| The ratio of the amount of water vapor in the air compared to the amount required for saturation |
|
|
Term
|
Definition
| A condition whereby the atmosphere contains more water vapor than is needed to produce saturation with respect to a flat surface of pure water or ice, and the relative humidity is greater than 100% |
|
|
Term
|
Definition
| The temperature to which air must be cooled for saturation to occur |
|
|
Term
|
Definition
| The temperature at which the air becomes saturated with respect to ice when cooled at constant pressure and constant water vapor content |
|
|
Term
|
Definition
| The lowest temperature that can be obtained by evaporating water into the air |
|
|
Term
|
Definition
| A physical condition induced by a person's overexposure to high air temperatures, especially when accompanied by high humidity |
|
|
Term
|
Definition
| An index that combines air temperature and relative humidity to determine and apparent temperature- how hot it actually feels |
|
|
Term
|
Definition
| What the air temperature "feels like" for various combinations of air temperature and relative humidity |
|
|
Term
|
Definition
| An instrument used to measure the water vapor content of the air |
|
|
Term
|
Definition
| An instrument designed to measure the air's water vapor content |
|
|
