1. Arizona Local (Regional) Dust Episode ?

3. Percentile of Bext, OC, FS and CM on 10/16/2001

4. Compared with the Asian dust aerosols, Al, Ca, Fe and Ti to Si ratios are lower.
Higher CM/Soil.
10/16/2001
Asian Dust Storm

10. PIMA COUNTY 24 HOUR PM10 MONITORING DATA 1/1/2001 - 12/31/2001
Tucson, Arizona (October 19, 2001) – On Tuesday, October 16th, the Tucson Valley experienced unusually high levels of particles in the air that obscured mountain views. Official monitoring results from that day are now available and indicate that the levels of particulate matter 10 microns or less in diameter (PM10) did not exceed the EPA health standard of 150 ug/m3 (micrograms per cubic meter). On October 16th, the highest concentration of particulate matter at an official site was 134 ug/m3.
PIMA COUNTY 24 HOUR PM10 MONITORING DATA     1/1/2001  - 12/31/2001  
Broadway & Swan ug/m3
Corona de Tucson ug/m3
Green Valley ug/m3
Orange Grove ug/m3
Prince Road ug/m3
South Tucson ug/m3
Santa Clara ug/m3
Tangerine ug/m3
Date  
10/04/01 24:00 20 9
NoData 22 23 15
10/05/01 24:00 27
10/06/01 24:00 24 21
10/07/01 24:00 14 13
10/08/01 24:00 19 17
10/09/01 24:00
10/10/01 24:00 26 32 25
10/11/01 24:00
10/12/01 24:00 34 31
10/13/01 24:00
10/14/01 24:00
10/15/01 24:00 33
10/16/01 24:00
120
133
111
125
134
131 81
10/17/01 24:00 72 68
10/18/01 24:00 55 48
10/19/01 24:00 56 51
10/20/01 24:00 41 35
10/21/01 24:00 30
10/22/01 24:00 28 36
10/23/01 24:00 29
10/24/01 24:00
10/25/01 24:00 38 47
10/26/01 24:00 46
10/27/01 24:00
10/28/01 24:00 42 40