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climate change
pgs. 669-672
| Term | Definition |
|---|---|
| weather | the state of the atmosphere at a specific time and place |
| Climate | the general pattern of weather conditions for a region over a long period of time (at least 30 years) |
| Latitude | a north-south measurement of position on the earth. It is defined by the angle measured from the earth's equatorial plane. |
| Elevation | the height of the land surface relative to sea level |
| Glacier | a large long-lasting accumulation of snow and ice that develops on land and flows under its own weight. |
| windward | the upwind side or side directly influenced to the direction that the wind blows from; opposite of leeward |
| leeward | the downwind side of an elevated area like a mountain ; opposite of windward. |
| rain shadow | the reduction of precipitation commonly found on the leeward side of the mountain. |
| heat capacity | the quantity of heat energy required to increase temperature of a material or system; typically referenced as the amount of heat energy required to generate a 1 rise in the temperature of 1 gram of a given material that is at atmospheric pressure and 20'C |
| lake-effect snow | the snow that is precipitated when an air mass that has gained moisture by moving over a relatively warm water body is cooled as it passes over relatively cold land. This cooling triggers condensation of clouds and precipitation. |
| Global Climate | the mean climatic conditions over the surface of the earth as determined by the averaging of a large number of observations spatially distributed throughout the entire region of the globe. |
| Little Ice Age | the time period from mid-1300's to the mid-1800's AD. during this period, global temperatures were at there coldest since the beginning of the Holocene. |