来自英文网站的专业气象词汇.doc

关于天气，天气预报的一些词汇和解释 （来自英文网站/er/box/glossary.htm） Terms used by meteorologists, forecasters, weather observers, and in weather forecasts Ablation- The process of being removed. Snow ablation usually refers to removal by meltingAbsolute Humidity- The density of water vapor.? It is the mass of the water vapor divided by the volume that it occupies.Accretion- Growth of precipitation particles by collision of ice crystals with super cooled liquid droplets which freeze on impactAccessory Clouds- Clouds that are dependent on a larger cloud system for development and continuance. Accessory clouds associated with the thunderstorm include roll, shelf, mammatus, and wall clouds.Acid Rain- Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic (e.g. pH 5.6). Additive data- A group of coded remarks in a weather observation that includes pressure tendency, amount of precipitation, and maximum/minimum temperature during specified periods of time.Adiabatic- changes in temperature caused by the expansion (cooling) or compression (warming) of a body of air as it rises or descends in the atmosphere.Adiabatic Process- The change of temperature of air without transferring heat.? In an adiabatic process compression results in warming, and expansion results in cooling.Advection- The horizontal transport of air, moisture or other atmospheric properties. Commonly used with temperatures, i.e., warm air advection. Advection Fog- a type of fog that results from the advection of moist air over a cold surface and the cooling of the air to its dew point that follows; this type of fog is most common in coastal regions.Advisory- Advisories are issued for weather situations that cause significant inconveniences but do not meet warning criteria and, if caution is not exercised, could lead to life-threatening situations. Advisories are issued for significant events that are occurring, are imminent, or have a very high probability of