A Method for Increasing the Turbulent Kinetic Energy in the Mellor–Yamada–Janjić Boundary-Layer Parametrization
- 375 Downloads
A method for enhancing the calculation of turbulent kinetic energy in the Mellor–Yamada–Janjić planetary boundary-layer parametrization in the Weather Research and Forecasting numerical model is presented. This requires some unconventional selections for the closure constants and an additional stability dependent surface length scale. Single column model and three-dimensional model simulations are presented showing a similar performance with the existing boundary-layer parametrization, but with a more realistic magnitude of turbulence intensity closer to the surface with respect to observations. The intended application is an enhanced calculation of turbulence intensity for the purposes of a more accurate wind-energy forecast.
KeywordsBoundary-layer parametrization Mellor–Yamada–Janjić scheme Turbulence closure Turbulence intensity Turbulent kinetic energy Weather Research and Forecasting model Wind energy forecasting
Unable to display preview. Download preview PDF.
- Elliott DL (1991) Status of wake and array loss research. In: 21st American wind energy association conference: windpower 1991, Palm Springs, 24–27 Sep 1991Google Scholar
- EWEA (2012) The european offshore wind industry key 2011 trends and statistics. http://www.ewea.org/fileadmin/ewea_documents/documents/publications/statistics/EWEA_stats_offshore_2011_02.pdf
- Janjić Z (2002) Nonsingular implementation of the Mellor–Yamada level 2.5 scheme in the NCEP Meso model. Technical Report, National Centers for Environmental Prediction, Office Note No. 437Google Scholar
- Klebanoff P (1955) Characteristics of turbulence in a boundary layer with zero pressure gradient. Technical Report 1247, National Advisory Committee for Aeronautics, WashingtonGoogle Scholar
- Laufer J (1954) The structure of turbulence in a fully developed pipe flow. Technical Report 1174, National Advisory Committee for Aeronautics, WashingtonGoogle Scholar
- Neumann T, Nolopp K (2007) Three years operation of far offshore measurements at FINO1. DEWI Mag 30: 42–46Google Scholar
- Österlund J (1999) Experimental studies of zero pressure-gradient turbulent boundary layer flow. PhD thesis, Royal Institute of Technology, Department of Mechanics, StockholmGoogle Scholar
- Skamarock WC, Klemp JB, Dudhia J, Gill DO, Barker DM, Duda MG, Huang X, Wang W, Powers J (2008) A description of the advanced research WRF version 3. Technical Report, National Center for Atmospheric Research, BoulderGoogle Scholar
- Stull R (1988) An introduction to boundary layer meteorology. Kluwer, Dordrecht, 666 ppGoogle Scholar
- Svensson G, Holtslag A, Kumar V, Mauritsen T, Steeneveld G, Angevine W, Bazile E, Beljaars A, de Bruijn E, Cheng A, Conangla L, Cuxart J, Ek M, Falk M, Freedman F, Kitagawa H, Larson V, Lock A, Mailhot J, Masson V, Park S, Pleim J, Söderberg S, Weng W, Zampieri M (2011) Evaluation of the diurnal cycle in the atmospheric boundary layer over land as represented by a variety of single-column models: The second GABLS experiment. Boundary-Layer Meteorol 140: 177–206CrossRefGoogle Scholar