Τίτλος:
An analysis of wind direction and horizontal wind component fluctuations over complex terrain
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Based on an extensive wind dataset over complex terrain, the commonly used small-angle approximation σv ~ σθV is studied and found to overestimate over all wind speeds and σθ values observed. This should be anticipated due to the assumptions necessary to derive the approximation. Overestimation (of 10%-30%) is also observed in the small σθ range. The three parameters involved are further discussed to gain better understanding of the behavior of the approximation under different conditions. The standard deviation of wind direction σθ is shown to vary inversely with wind speed not only under stable, but also under convective conditions, reaching a site-dependent constant value at high wind speeds. -from Authors
Συγγραφείς:
Papadopoulos, K.H.
Helmis, C.G.
Amanatidis, G.T.
Περιοδικό:
Journal of Applied Meteorology
Λέξεις-κλειδιά:
complex terrain; horizontal wind; small-angle approximation; wind direction, Complex Terrain; Standard Deviation; Wind Direction
DOI:
10.1175/1520-0450(1992)031<1033:AAOWDA>2.0.CO;2
