Changes between Version 12 and Version 13 of doc/tec/nudging


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Timestamp:
Nov 19, 2018 4:27:21 PM (6 years ago)
Author:
kanani
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  • doc/tec/nudging

    v12 v13  
    1 === Nudging ===
     1= Nudging =
    22
    33In order to simulate less idealized flow situations [wiki:doc/tec/lsf  large scale forcing] can be used in PALM.
     
    3939The strength of the nudging strongly depends on the nudging time scale used. Usually, this time scale should be in the order of several hours. By varying the nudging time scale with height it is possible to apply the nudging not everywhere but for example only above the boundary layer. In case this is wanted, the time scale should be set to a very large number (~10^10^) inside the boundary layer. By this way, the nudging tendency approaches zero.\\
    4040
    41 === Examples ===
     41== Examples ==
    4242
    4343A complete example for a PALM run with nudging (and [wiki:doc/tec/lsf large scale forcing]) is documented [../../app/examples/lsf here].
    4444
    45 === References ===
     45== References ==
    4646* '''Anthes, R. A., 1974:''' Data assimilation and initialization of hurricane prediction models. ''J. Atmos. Sci'', '''31''', 702-719.[http://dx.doi.org/10.1175/1520-0469(1974)031<0702:DAAIOH>2.0.CO;2 doi]
    4747* '''Neggers, R. A. J., A. P. Siebesma and T. Heus, 2012:''' Continous single-column model evaluation at a permanent meteorological supersite. ''Bull. Amer. Meteor. Soc'', '''29''', 91-115. [http://dx.doi.org/10.1175/BAMS-D-11-00162.1 doi]