CANARINA:

Home

Air

Noise

Water

Contact us

 

DISPER:

DISPER

Solutions 

Data 

Algorithms

Emissions 

Graphs  

Google maps

GIS

 

SOLUTIONS: DISPER  

solutions

advantages

Price

DEMO

 

COMMANDS:

Input data I

Input data II

Input data III

Input data IV

average

Import

commands

 

ALGORITHMS:

Algorithms I

Algorithms II

Algorithms III

Algorithms IV

Algorithms V

Algorithms VI

Algorithms VII

Algorithms VIII

Algorithms IX

Algorithms X

 

EMISSIONS:

Emissions I

Emissions II

Emissions III

Pollutants I

Pollutants II

 

GRAPHS:

Graphs I 

Graphs II

Graphs III 

Graphs IV

 

   

Algorithms VII · software · environmental assessment

                 

DEMO Download - Price

 

The Dispersion Parameters

Point Source Dispersion Parameters:

Equations that approximately fit the Pasquill-Gifford curves are used to calculate sigy and sigz (in meters) for the rural mode. The equations used to calculate sigy are of the form:

sigy=465.11628 x tan (TH)        (29)

where:

TH=0.017453293[c - d ln(x)] (30)

In both Equations the downwind distance x is in kilometers. The equation used to calculate sigz is of the form:

sigz=axb    (31)

where the downwind distance x is in kilometers and sigz is in meters.

Procedures Used to Account for Buoyancy-Induced Dispersion

The method of Pasquill is used to account for the initial dispersion of plumes. With this method, the effective vertical dispersion sze is calculated as follows:

sigze=[sigz2 +(Dh/3.5)]1/2        (32)

where sigz is the vertical dispersion due to ambient turbulence and Dh is the plume rise due to momentum or buoyancy. The lateral plume spread is:

sigye=[sigy2 +(Dh/3.5)]1/2        (33)

where sigy is the lateral dispersion due to ambient turbulence. It should be noted that Dh is the distance-dependent plume rise if the receptor is located between the source and the distance to final rise, and final plume rise if the receptor is located beyond the distance to final rise.

 

software · environmental assessment

DISPER software solutions: This application has been used in great number of environmental reports, air pollution courses and air pollution studies in the last years. We currently have users in more than 10 countries.


Oxfordshire - stack testing - test stack - stack emissions testing -

Cheshire - deca test stack - 3 test stack - stack testing companies -

Durham - test stack tablets -

Nottinghamshire - stack test protocol - stack emission test - stack test methods -

Northamptonshire - stack teste - stack testers - emissions testing -

Derbyshire - architecture testing - stack equipment - stack exhaust - stack interface -

Aberdeen - epa testing - mobile testing - stack emission -

Armagh - ppt testing - air testing - stack emmisions -

Bangor - systems testing - environmental testing - emmission testing -

Bath - emisions testing - specification testing - communication testing

Belfast - sip testing - fpga testing - isup testing -

Birmingham - dpoae testing - isdn testing - atm testing -

Bradford - voip testing - stack emmissions - cdma testing -

Brighton & Hove - network testing - vhdl testing - ip testing -

Bristol - ss7 testing - stack monitoring - protocol testing -

Cambridge - otoacoustic testing - oae testing - gsm testing -

Canterbury - exhaust testing - stack emission - stack protocols -

Cardiff - stacking test -

Carlisle - test enanthate stack - test stack overflow - ip stack test -

Chester - test a stack - epa stack test - emission testing -

Chichester - soil stack testing - stack tests - air stack testing -

City of London - stack testing association - ip stack testing - what is stack testing -

Coventry - test prop stack - environmental stack testing - stack testing services -

Derby - stack testing guidance - tcp stack test - stack testing firm -

 

Somerset  - integrated environmental assessment - institute of environmental assessment - environmental monitoring assessment -

Derbyshire - what is environmental impact assessment -

Essex - phase one environmental assessment - environmental assessment services - institute for environmental assessment -

Norwich - phase i environmental site assessment - phase 1 environmental site assessment - environmental assessment act

Nottingham - environmental planning and assessment act -

Oxford -  federal environmental assessment - environmental assessment training - environmental assessment guidelines -

Peterborough - integrated environmental assessment and management - environmental planning assessment act - environmental impact assessment training -

Plymouth - environmental modeling and assessment - environmental management and assessment - municipal class environmental assessment -

Portsmouth - environmental health assessment - environmental impact assessment directive - national center for environmental assessment -

Preston - strategic environmental assessment directive - nepa environmental assessment - environmental impact assessment regulations 1999 -

Ripon - environmental health risk assessment - environmental assessment regulations - canada environmental assessment -

Salford - environmental impact assessment scotland -

Derry - environmental impact assessment guidelines - environmental planning & assessment act - town and country planning environmental impact assessment -

Dundee - environmental planning and assessment regulation 2000 - office of environmental health hazard assessment - environmental impact assessment process -

Durham - environmental assessment process - class environmental assessment -

Edinburgh - institute of environmental management and assessment - assessment of environmental effects -

Ely - environmental impact assessment review - environmental impact assessment eia - environmental planning and assessment regulation -

Exeter - environmental impact assessment report - phase 1 environmental assessment -

Glasgow - environmental impact assessment regulations - environmental assessment office - netherlands environmental assessment agency -

Salisbury - canadian environmental assessment - environmental planning and assessment act 1979 - canadian environmental assessment agency -

Sheffield - environmental impacts assessment - environmental impact assessment reports - stochastic environmental research and risk assessment -

St Albans - environmental life cycle assessment - environmental assessment tool - baseline environmental assessment -

St David's - draft environmental assessment - electronic product environmental assessment tool - environmental monitoring and assessment journal -

Stirling - environmental quality assessment - environmental impact assessment jobs - environmental and social impact assessment -

Stoke-on-Trent - environmental impact assessment scotland regulations 1999 -