Table of Contents - The Atmospheric Studies Group at TRC

Table of Contents - The Atmospheric Studies Group at TRC Table of Contents - The Atmospheric Studies Group at TRC

29.01.2015 Views

Section 9: CALPUFF -------- a Specify a half life that is greater than or equal to zero for 1 parent species in each block, and set the yield factor for this species to -1 b Specify a yield factor that is greater than or equal to zero for 1 or more child species in each block, and set the half-life for each of these species to -1 NOTE: Assignments in each block are treated as a separate input subgroup and therefore must end with an input group terminator. If NDECAY=0, no assignments and input group terminators should appear. ------------------------------------------------------------------------------- Table 9-2 (Continued) Sample CALPUFF Control File (CALPUFF.INP) Input Group 12 ------------------------------------------------------------------------------- INPUT GROUP: 12 -- Misc. Dispersion and Computational Parameters --------------- Horizontal size of puff (m) beyond which time-dependent dispersion equations (Heffter) are used to determine sigma-y and sigma-z (SYTDEP) Default: 550. ! SYTDEP = 1.0E04 ! Switch for using Heffter equation for sigma z as above (0 = Not use Heffter; 1 = use Heffter (MHFTSZ) Default: 0 ! MHFTSZ = 1 ! Stability class used to determine plume growth rates for puffs above the boundary layer (JSUP) Default: 5 ! JSUP = 5 ! Vertical dispersion constant for stable conditions (k1 in Eqn. 2.7-3) (CONK1) Default: 0.01 ! CONK1 = 0.01 ! Vertical dispersion constant for neutral/ unstable conditions (k2 in Eqn. 2.7-4) (CONK2) Default: 0.1 ! CONK2 = 0.1 ! Factor for determining Transition-point from Schulman-Scire to Huber-Snyder Building Downwash scheme (SS used for Hs < Hb + TBD * HL) (TBD) Default: 0.5 ! TBD = 0.5 ! TBD < 0 ==> always use Huber-Snyder TBD = 1.5 ==> always use Schulman-Scire TBD = 0.5 ==> ISC Transition-point Range of land use categories for which urban dispersion is assumed Default: 10 ! IURB1 = 10 ! (IURB1, IURB2) 19 ! IURB2 = 19 ! Site characterization parameters for single-point Met data files --------- (needed for METFM = 2,3,4) Land use category for modeling domain (ILANDUIN) Default: 20 ! ILANDUIN = 20 ! Roughness length (m) for modeling domain (Z0IN) Default: 0.25 ! Z0IN = 0.25 ! Leaf area index for modeling domain 9-30

Section 9: CALPUFF (XLAIIN) Default: 3.0 ! XLAIIN = 3. ! Elevation above sea level (m) (ELEVIN) Default: 0.0 ! ELEVIN = 0. ! Latitude (degrees) for met location (XLATIN) Default: -999. ! XLATIN = 0. ! Longitude (degrees) for met location (XLONIN) Default: -999. ! XLONIN = 0. ! Specialized information for interpreting single-point Met data files ----- Anemometer height (m) (Used only if METFM = 2,3) (ANEMHT) Default: 10. ! ANEMHT = 10. ! Form of lateral turbulence data in PROFILE.DAT file (Used only if METFM = 4 or MTURBVW = 1 or 3) (ISIGMAV) Default: 1 ! ISIGMAV = 1 ! 0 = read sigma-theta 1 = read sigma-v Choice of mixing heights (Used only if METFM = 4) (IMIXCTDM) Default: 0 ! IMIXCTDM = 0 ! 0 = read PREDICTED mixing heights 1 = read OBSERVED mixing heights Maximum length of a slug (met. grid units) (XMXLEN) Default: 1.0 ! XMXLEN = 1. ! 9-31

Section 9: CALPUFF<br />

--------<br />

a<br />

Specify a half life th<strong>at</strong> is gre<strong>at</strong>er than or equal to zero for 1 parent species<br />

in each block, and set the yield factor for this species to -1<br />

b<br />

Specify a yield factor th<strong>at</strong> is gre<strong>at</strong>er than or equal to zero for 1 or more child<br />

species in each block, and set the half-life for each <strong>of</strong> these species to -1<br />

NOTE: Assignments in each block are tre<strong>at</strong>ed as a separ<strong>at</strong>e input<br />

subgroup and therefore must end with an input group termin<strong>at</strong>or.<br />

If NDECAY=0, no assignments and input group termin<strong>at</strong>ors should appear.<br />

-------------------------------------------------------------------------------<br />

<strong>Table</strong> 9-2 (Continued)<br />

Sample CALPUFF Control File (CALPUFF.INP)<br />

Input <strong>Group</strong> 12<br />

-------------------------------------------------------------------------------<br />

INPUT GROUP: 12 -- Misc. Dispersion and Comput<strong>at</strong>ional Parameters<br />

---------------<br />

Horizontal size <strong>of</strong> puff (m) beyond which<br />

time-dependent dispersion equ<strong>at</strong>ions (Heffter)<br />

are used to determine sigma-y and<br />

sigma-z (SYTDEP) Default: 550. ! SYTDEP = 1.0E04 !<br />

Switch for using Heffter equ<strong>at</strong>ion for sigma z<br />

as above (0 = Not use Heffter; 1 = use Heffter<br />

(MHFTSZ) Default: 0 ! MHFTSZ = 1 !<br />

Stability class used to determine plume<br />

growth r<strong>at</strong>es for puffs above the boundary<br />

layer (JSUP) Default: 5 ! JSUP = 5 !<br />

Vertical dispersion constant for stable<br />

conditions (k1 in Eqn. 2.7-3) (CONK1) Default: 0.01 ! CONK1 = 0.01 !<br />

Vertical dispersion constant for neutral/<br />

unstable conditions (k2 in Eqn. 2.7-4)<br />

(CONK2) Default: 0.1 ! CONK2 = 0.1 !<br />

Factor for determining Transition-point from<br />

Schulman-Scire to Huber-Snyder Building Downwash<br />

scheme (SS used for Hs < Hb + TBD * HL)<br />

(TBD) Default: 0.5 ! TBD = 0.5 !<br />

TBD < 0 ==> always use Huber-Snyder<br />

TBD = 1.5 ==> always use Schulman-Scire<br />

TBD = 0.5 ==> ISC Transition-point<br />

Range <strong>of</strong> land use c<strong>at</strong>egories for which<br />

urban dispersion is assumed Default: 10 ! IURB1 = 10 !<br />

(IURB1, IURB2) 19 ! IURB2 = 19 !<br />

Site characteriz<strong>at</strong>ion parameters for single-point Met d<strong>at</strong>a files ---------<br />

(needed for METFM = 2,3,4)<br />

Land use c<strong>at</strong>egory for modeling domain<br />

(ILANDUIN) Default: 20 ! ILANDUIN = 20 !<br />

Roughness length (m) for modeling domain<br />

(Z0IN) Default: 0.25 ! Z0IN = 0.25 !<br />

Leaf area index for modeling domain<br />

9-30

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