Air quality and pollution from forest fires. 

The objective of the lab is to teach the use of hysplit a air quality model to predict where a pollutant emitted by a fire or manufacturing plant will travel in the United States.

How does the height of the pollution source effect the height that the pollutants travel with distance and how does the meteorological conditions effect the trajectory. 

1. Read the article on the Rodeo fire Show low Arizona June 20 2002
http://weather.nmsu.edu/News/fall2002/news2002.pdf

2. Look at the satellite pictures of the smoke see
http://rapidfire.sci.gsfc.nasa.gov/gallery/

3.Run hysplit and compare the model to the picture projection of the smoke path. Discuss how good the model is. Select edas 80 km air data.
http://www.arl.noaa.gov/ready/hysplit4.html

4. Run for 4 days and look at path. Then run for June 30 and look at path

5. For extra credit determine what the impact of opening  the Asarco plant in El Paso would have on air quality. 

Answer.

Find the location of the Show Low file. 

1. 

 
Decimal Degrees
Deg:Min:Sec
Lat:
34.256937
34:15:24.973N
Lon:
-110.053034
110:03:10.922W

see http://www.geocode.com/modules.php?name=TestDrive_Eagle

2. Run Hysplit 

Find the utm  time

http://wwp.greenwichmeantime.com/time-zone/usa/

Arizona time+7 hr. =  10:30 + 7= 17:30

Date is June 20 2002

edas.subgrid.june2.002

Run results. 

 

 

 

 

Explanation

The change air flow direction is a function of the rossby wave.

http://amsglossary.allenpress.com/glossary/search?id=rossby-wave1

Rossby wave A wave on a uniform current in a two-dimensional nondivergent fluid system, rotating with varying angular speed about the local vertical (beta plane).
This is a special case of a barotropic disturbance, conserving absolute vorticity. Applied to atmospheric flow, it takes into account the variability of the Coriolis parameter while assuming the motion to be two-dimensional. A stationary Rossby wave is thus of the order of the distance between the large-scale semipermanent troughs and ridges in the middle troposphere. The Rossby wave moves westward relative to the current, in effect slowing the eastward movement of long-wave components relative to the short-wave components in a barotropic flow. This effect is important in a numerical forecast with a barotropic model, but attempts to apply the formula to actual contour patterns considered as waves have less dynamic justification and correspondingly less success.
long wave1. (Or major wave; also called planetary wave.) With regard to atmospheric circulation, a wave in the major belt of westerlies that is characterized by large length and significant amplitude.
The wave length is typically longer than that of the rapidly moving individual cyclonic and anticyclonic disturbances of the lower troposphere.