GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Document type
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Nocturnal boundary layer height prediction from surface routine meteorological data (1998)
    Springer
    Meteorology and atmospheric physics 68 (1998), S. 177-186 
    Details
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Summary A number of well known diagnostic equations for the determination of the height,h, of the nocturnal boundary layer. with minimum data requirements of at most surface wind speed, air temperature and total cloud cover, have been tested as to their effectiveness. The computed values have been compared with direct estimation ofh, from temperature or wind profiles of rawinsonde ascents available at 00Z (02h LST). The comparison between computed and observed values shows that best agreement is found when the nocturnal boundary layer height is determined through wind profiles. The ratio of the computed to the observed values reveals a strong dependence on stability, resulting in overestimation by the models for very low stability and underestimation for strong stability. The simple expressions involving the wind speed rather than other stability parameters resulted in a better overall fit to the observed values. A simple prognostic model is shown to provide the best estimates of the NBL height compared to both wind and temperature profile definition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01030209
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    SOME MEASUREMENTS OF TURBULENCE CHARACTERISTICS OVER COMPLEX TERRAIN (1997)
    Springer
    Boundary layer meteorology 83 (1997), S. 221-245 
    Details
    ISSN: 1573-1472
    Keywords: Wind flow ; Complex terrain ; Turbulence spectra ; Turbulence measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Results are presented from a windturbulence measurements campaign at the summit of ahill in complex terrain in Andros island (Greece)where a wind turbine park has been constructed. Meanturbulence parameters and power spectra from three 30 mmasts located at the summit, upwind and downwind ofthe hill are analysed to ascertain the differencesfrom respective parameters in flat terrain and toassess the influence of the irregular topography. Thevariances of the horizontal (vertical) wind components are found tobe smaller (larger) than the onesfrom flat terrain. Of the available correlations forthe power spectra, the Von Karman one was found togive better results, although the low frequency partsshow pronounced lags. The asymmetry of the upwindterrain for different wind directions and especiallyits slope is clearly felt both by variances and byspectra. This influence, as expected, is found toincrease with increasing stability. These results havean important significance for wind turbine design andwind energy utilisation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1000288002105
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...