Water brought to the earth's surface from great depths by the upward movement of intrusive igneous rocks. The quantities of neither magmatic water nor connate water are appreciable in comparison to ...
One of several constant-pressure levels in the atmosphere for which a complete evaluation of data derived from upper-air observations is required. Currently the mandatory pressure levels are 1000 mb, ...
Typically used to denote that a forecast is free from any direct subjective influences resulting from human experience, interpretation, or bias. Examples are numerical and statistical forecasts. See ...