Alternative small scale meteorology input to a chemical transport ...

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· Air quality models that demanded sophisticated meteorological data have not been run on small scales. Small scale studies with sophisticated Eulerian models became possible with the introduction of the CMAQ air quality modeling system. There are still venues to be investigated in this area. Providing high resolution meteorological data allows air quality modeling to explore urban and smaller scales, since no restrictions are imposed on the air quality models in terms of spatial resolution. Providing diagnostic meteorological data could make this task easier without involving additional computer and human resources. The validity of this approach will be tested by comparing air quality results from CMAQ with MM5 data against CMAQ results with diagnostic data. A list of the most used abbreviations throughout the text follows: MODELS-3 Computational platform for air quality modeling, includes CMAQ CMAQ Community Multiscale Air Quality modeling system MM5 Prognostic Mesoscale Meteorological Model CALMET Diagnostic Meteorological Model MCIP Meteorology - Chemistry Interface Processor 4
2.1. Historical remarks CHAPTER 2. BACKGROUND INFORMATION Ambient air composition over the Earth has undergone several changes throughout the years. Anthropogenic activities, especially since the 17-th century, when coal began to replace wood as the primary source of energy, have played a significant role in the earth’s atmosphere balance. These anthropogenic pollutants have often generated locally unhealthful air quality with short term episodic effects or difficult to predict adverse effects. The emergence of petroleum products in the twentieth century has characterized a new industrial revolution and the recognition that petroleum products are responsible for the so called “photochemical” summer smog, like the smog in the Los Angeles area. The last decades of the twentieth century have been characterized by a growing interest in long range air pollution transport phenomena and global effects. These days, the society is showing increasing interest towards the air quality and the environment. In response, air quality modeling has increasingly become a more important part of the study of the environment. Modeling, like monitoring, is not the solution to the air pollution problem. But modeling provides a powerful tool for studying the environment and, with the advance of science, to better represent the real processes in the atmosphere. 2.2. The “one atmosphere” perspective Comprehensive air quality modeling of large domains started in the late 1970's. The 5
Page 1 and 2: Alternative Small Scale Meteorology
Page 3 and 4: TABLE OF CONTENTS LIST OF TABLES...
Page 5 and 6: LIST OF TABLES 1. Transformation ch
Page 7 and 8: 11. Inverse Monin-Obukhov length on
Page 9 and 10: CHAPTER 1. INTRODUCTION In recent y
Page 11: techniques (Otte, 1999). It must be
Page 15 and 16: treat independently. Proper modelin
Page 17 and 18: 2.4. Use of a meteorological model
Page 19 and 20: spectrum of spatial and temporal sc
Page 21: CHAPTER 3. APPROACH 3.1. Alternativ
Page 41: educes eventual inconsistencies in
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11. Scire, J. S., F. R. Robe, M. E.
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C** Set up includes for grid & univ
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SDATE = YYYY*1000 + DDD ! YYYYDDD S
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IF ( .NOT. COLFLAG ) GOTO 1010 IF (
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JJ = J0 + JW ! coarse y-grid index
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C ENDDO ENDDO X3JACOBF(C,R,0) = 1.0
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c JJ = J0 + JW - 1 JJ = J0 + JW COL
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ENDIF CALL BILIN2D (NDX,NCOLS_X,NRO
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C SUBROUTINE READCM C**************
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C NEW RECORD -- #3 - ADDITIONAL RUN
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! 0=NO TURBULENT KINETIC ENERGY ! F
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C C --- READ THE 2-D METEOROLOGICAL
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C----------------------------------
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C NDATHR - INTEGER - DATE AND TIME
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C ---------------------------------
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X_CROSS(I,J) = X0 + FLOAT(I)*RESOLN
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C Compute actual specific humidity
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C**********************************
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C C********************************
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C REAL VSAT, VPRESS ! saturation an
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RAUS( A1, B1, CKUST ) = PRO * LOG(
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C** compute tstar and bulk Richards
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ENDDO DO C = 1, NCOLS_X DO R = 1, N
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C 640 CONTINUE C C** compute cell a
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APPENDIX B: INPUT FILE TO CALMET 4
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Starting date: Year (IBYR) -- No de
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Type of unformatted output file: (I
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!END! (IPR2) (0=no, 1=yes) Default:
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(0 = NO, 1 = YES) Layer-dependent b
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Multiplicative scaling factor for e
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!END! ! XG1 = 0. ! X Grid line 2 de
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(will use mixing ht MNMDAV,HAFANG s
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EDUCATION VITA Krassimira Ilieva La
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