Abstract: Cumulonimbi are often reported in cold air during winter months in northern Europe but thunderstorms are observed much less frequently. This suggests that some cold air cumulonimbi cannot develop into thunderstorms. The ...

Abstract: Intercomparative measurements of wind speed, wind direction, wind direction standard deviation, and vertical wind standard deviation from two acoustic Doppler sodars and a laser Doppler lidar are studied, using the BAO ...

Abstract: In an experiment conducted at the Boulder Atmospheric Observatory (BAO), comparisons were made between two types of sonic anemometer and thermometer systems. One sonic anemometer was a single-axis system manufactured by ...

Abstract: The squared spectral coherence, a frequency-domain analog of the squared correlation coefficient, identifies the frequencies at which two variables most strongly covary. A simple coherence significance test designed to ...