Skip to main content

Entrainment Process in Mesoscale Models: Observational Validation

  • Chapter
Air Pollution Modelling and Simulation

Abstract

Mesoscale models are currently used to simulate and forecast short-range meteorological and air pollution situations. For such length and time scales, such models will only yield accurate results if they represent realistically the main variables in the Atmospheric Boundary Layer (ABL). The forcings which drive the ABL development are -the heat and moisture surface fluxes and the entrainment flux. For the surface variables, the partitioning of the incoming radiation into sensible heat flux and latent heat flux (Pleim and Xiu, 1995) is a determining factor. The entrainment of warmer air from the free troposphere into the top of the ABL is the second forcing which specifically contributes to heat and dry the ABL. The growth of the mixing layer is dependent on these bottom and top boundary fluxes.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 169.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 219.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 219.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Similar content being viewed by others

References

  • Angevine WM., White AB, Avery AK (1994) Boundary-layer depth and entrainment zone characterization with a boundary-layer profiler. Bound.-layer Meteo 68:375–385

    Article  Google Scholar 

  • Barr S, Sisterson DL (2000) Local analysis report for the southern Great Plains. ARM report ARM-00–001. Dept of Energy, USA.

    Google Scholar 

  • Berman S, Rao JYKST (1999) Spatial and temporal variation in the mixing depth

    Google Scholar 

  • over the northeastern united states during the summer of 1995. J Appl Meteorol 38:1661–1673

    Google Scholar 

  • Blackadar AK (1976) Modelling the nocturnal boundary layer, in Third Symp. On Atmospheric Turbulence, Diffusion and Air Quality, Raleigh, NC, Amer. Meteor. Soc, pp 46–49

    Google Scholar 

  • Braun SA, Tao WK (2000) Sensitivity of high-resolution simulations of hurricane Bob (1991) to planetary boundary layer parameterizations. Mon Wea Revl 28:3941–3961

    Article  Google Scholar 

  • Burk SD, Thompson WT (1989) A vertically nested regional numerical weather prediction model with second-order closure physics. Mon Wea Rev 117: 2305–2324

    Article  Google Scholar 

  • Carlson TN, Boland FE (1978) Analysis of urban-rural canopy using a surface heat flux/temperature model. J Appl Meteorol 17:998–1013

    Article  Google Scholar 

  • Dudhia J (1993) A nonhydrostatic version of the Penn State/NCAR mesoscale model: validation tests and simulation of an Atlantic cyclone and cold front. Mon Wea Rev 121: 1493–1513

    Article  Google Scholar 

  • Grell GA, Stauffer DR (1994) A description of the fifth generation Penn State/NCAR mesoscale model ({MM5}), {NCAR} Technical Note, NCAR- TN-398+STR, National Center for Atmospheric Research, Boulder, CO, pp 138

    Google Scholar 

  • Janjic ZI. (1994) The step-mountain ETA coordinate model: further developments of the convection, viscous sub layer, and turbulence closure schemes. Mon Wea Rev 122:927–945

    Article  Google Scholar 

  • Mellor GL and Yamada T (1974) A hierarchy of turbulence closure models for planetary boundar layer. J. Atmos. Sci. 31: 1791–1806.

    Article  Google Scholar 

  • Oncley SP, Dudhia J (1995) Evaluation of surface fluxes from {MM5} using observations. Mon Wea Rev 123: 3344–3357

    Article  Google Scholar 

  • Pleim JE, Xiu A (1995) Development and testing of a surface flux and planetary boundary layer model for application in mesoscale models. J Appl Meteorol 34:16–32

    Article  Google Scholar 

  • Seaman ML, Ludwig FL, Donall EG, Warner TT, Bhumralkar CM (1989) Numerical studies of urban planetary boundary-layer structure under realistic synoptic conditions J Appl Meteorol 28:760–781

    Article  Google Scholar 

  • Troen I, Mahrt L (1986) A simple model of the atmospheric boundary layer; sensitivity to surface evaporation. Bound-layer Meteo 37:129–148

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2002 Springer-Verlag Berlin Heidelberg

About this chapter

Cite this chapter

de Arellano, J.VG., Duynkerke, P.G., Pino, D. (2002). Entrainment Process in Mesoscale Models: Observational Validation. In: Sportisse, B. (eds) Air Pollution Modelling and Simulation. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04956-3_2

Download citation

  • DOI: https://doi.org/10.1007/978-3-662-04956-3_2

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-07637-4

  • Online ISBN: 978-3-662-04956-3

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics