Abstract: A coordinate system is presented in which the lowest coordinate surface represents the topography of the earth. Higher coordinate surfaces reflect this topography in diminishing degrees and become isobaric at and above the ...

Abstract: No abstract available

Abstract: On conventional surface analyses, sea level isobars allow a forecaster to compute the horizontal pressure-gradient force at sea level, which for much of the world is fairly close to the earth's surface. However, over ...

Abstract: Two methods are discussed for combining the routine forecasts of the 12 h probability of precipitation made by the National Weather Service, for use when longer period probabilities are desired but cannot be created ...

Abstract: Using screening regression procedures, an attempt has been made to standardize probability of precipitation Brier scores for difficulty. Climatological factors affecting the difficulty of forecasting used are: precipitation ...