Statistics of Air Temperature Spatial Variability in the Atmospheric Surface Layer

Autor:	M. I. Fortus, T. I. Makarova, S. L. Zubkovsky, B. M. Koprov, V. M. Koprov
Rok vydání:	1998
Předmět:	Convection Atmospheric Science Meteorology Planetary boundary layer Spatial variability Empirical orthogonal functions Mechanics Characteristic velocity Covariance Atmospheric temperature Geology Convection cell
Zdroj:	Boundary-Layer Meteorology. 88:399-423
ISSN:	1573-1472 0006-8314
DOI:	10.1023/a:1001517403557
Popis:	Surface-layer convection is investigated by analyzing multi-point measurements of temperature and velocity fluctuations at different sets of spatial points.The visual analysis of temperature and velocity fluctuations measured by sensors mounted on a mast of 36-m height clearly reveals the presence of large-scale convective cells (known as ramp structures) making large contributions to the heat transfer from the ground to lower atmosphere. The vertical temperature variability is described with the aid of empirical orthogonal functions derived from temperature covariance matrices for the heights of 1, 2, 5, 10, 18 and 36 m. Temporal-spatial correlation functions obtained allow estimates of a characteristic velocity scale, which may be interpreted as the downwind velocity of ramp structures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f05b4b9c64212b4d6d5a9e1ca2fffda https://doi.org/10.1023/a:1001517403557 Zobrazit plný text záznamu Plný text ve formátu PDF