aermod_mfd - AERMOD: DESCRIPTION OF MODEL FORMULATION...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
AERMOD: DESCRIPTION OF MODEL FORMULATION
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1 On assignment to the Atmospheric Research and Exposure Assessment Laboratory, U. S. Environmental Protection Agency. 2 EPA-454/R-03-004 September 2004 AERMOD: DESCRIPTION OF MODEL FORMULATION By: Alan J. Cimorelli, U. S. Environmental Protection Agency, Region 3 Steven G. Perry 1 , Atmospheric Sciences Modeling Division/Air Resources Laboratory/NOAA, MD-80, USEPA Akula Venkatram, College of Engineering, University of California at Riverside Jeffrey C. Weil, Cooperative Institute for Research in Environmental Sciences, University of Colorado Robert J. Paine, ENSR Corporation Robert B. Wilson, U. S. Environmental Protection Agency, Region 10 Russell F. Lee, Charlotte, NC 28269 Warren D. Peters, U.S. Environmental Protection Agency, OAQPS Roger W. Brode, MACTEC Federal Programs, Inc. Durham, NC, 27709 James O. Paumier MACTEC Federal Programs, Inc. Durham, NC, 27709 U.S. Environmental Protection Agency Office of Air Quality Planning and Standards Emissions Monitoring and Analysis Division Research Triangle Park, North Carolina
Background image of page 2
3 Disclaimer This report has been reviewed by the Office of Air Qualtiy Planning and Standards, U.S. Environmental Protection Agency, and has been approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Acknowledgments This project was made possible through the continued support of Mr. Joe Tikvart, of EPA’s Office of Air Quality Planning and Standards (OAQPS), and Mr. Frank Schiermeier, of NOAA’s Atmospheric Sciences Modeling Division. The authors are particularly grateful to Dr. Gary Briggs, and Mr. John Irwin, of NOAA’s Atmospheric Sciences Modeling Division, for their thorough and constructive review of an earlier version of this document. Finally, we would like to thank the many scientists who participated in peer reviews and beta testing.
Background image of page 4
5 Table of Contents 1 Introduction .............................................................. 8 1.1 Background ......................................................... 8 1.2 The AERMIC Focus: A Replacement for the ISC3 Model ...................... 9 1.3 Model Development Process ........................................... 10 1.4 Purpose of Document ................................................. 11 2 Model Overview .......................................................... 12 3 Meteorological Preprocessor (AERMET) ..................................... 15 3.1 Energy Balance in the PBL ............................................... 3.1.1 NET RADIATION. ............................................ 16 3.1.2 TRANSITION BETWEEN THE CBL AND SBL . ................... 3.2 Derived Parameters in the CBL 17 3.2.1 FRICTION VELOCITY ( u * ) & MONIN OBUKHOV LENGTH ( L ) IN THE CBL ............................................................... 3.2.2 CONVECTIVE VELOCITY SCALE ( w * ) ............................. 18 3.3 Derived Parameters in the SBL 19 3.3.1 FRICTION VELOCITY ( u * )INTHESBL . ........................... 3.3.2 SENSIBLE HEAT FLUX ( H )INTHESBL. 21 3.3.3 MONIN OBUKHOV LENGTH ( L 3.4 Mixing Height ...................................................... 3.4.1 CONVECTIVE MIXING HEIGHT ( z ic ) ............................... 22 3.4.2 MECHANICAL MIXING HEIGHT ( z im ) .............................. 4 Vertical Structure of the PBL - AERMOD’s Meteorological Interface ............. 24 4.1 General Profiling Equations 4.1.1 WIND SPEED PROFILING . ....................................... 4.1.2 WIND DIRECTION PROFILES. .................................... 27 4.1.3 PROFILES OF THE POTENTIAL TEMPERATURE GRADIENT . ........ 4.1.4 POTENTIAL TEMPERATURE PROFILING .
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 91

aermod_mfd - AERMOD: DESCRIPTION OF MODEL FORMULATION...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online