Average Daily Maximum Ozone (ppb)
This presentation is the property of its rightful owner.
Sponsored Links
1 / 11

Average Daily Maximum Ozone (ppb) PowerPoint PPT Presentation


  • 90 Views
  • Uploaded on
  • Presentation posted in: General

Average Daily Maximum Ozone (ppb). 8. Fujita et al. 2000. Twelve-site Average NMHC and NO at 4-5 a.m. and 7-8 a.m. (PDT) by Day of the Week. 9. Fujita et al. 2000. Average t NO=O3 and t maxO3 and Rates of O 3 Accumulation on Sunday and Wednesday in 1981-84. 11. Fujita et al. 2000.

Download Presentation

Average Daily Maximum Ozone (ppb)

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Average daily maximum ozone ppb

Average Daily Maximum Ozone (ppb)

8

Fujita et al. 2000


Average daily maximum ozone ppb

Twelve-site Average NMHC and NO

at 4-5 a.m. and 7-8 a.m. (PDT) by Day of the Week

9

Fujita et al. 2000


Average daily maximum ozone ppb

Average tNO=O3 and tmaxO3 and Rates of O3 Accumulation

on Sunday and Wednesday in 1981-84

11

Fujita et al. 2000


Average daily maximum ozone ppb

Average tNO=O3 and tmaxO3 and Rates of O3 Accumulation

on Sunday and Wednesday in 1985-89

12

Fujita et al. 2000


Average daily maximum ozone ppb

Average tNO=O3 and tmaxO3 and Rates of O3 Accumulation

on Sunday and Wednesday in 1990-94

13

Fujita et al. 2000


Average daily maximum ozone ppb

Average tNO=O3 and tmaxO3 and Rates of O3 Accumulation

on Sunday and Wednesday in 1995-98

14

Fujita et al. 2000


Average daily maximum ozone ppb

Trends in Ozone Accumulation Rates on Sunday and

Wednesday for Western, Central, and Eastern SoCAB

15

Fujita et al. 2000


Average daily maximum ozone ppb

Average daily 6-7 a.m. (PST) NMHC/NOx

16

Fujita et al. 2000


Average daily maximum ozone ppb

Average daily NMHC/NOx at Maximum Ozone

17

Fujita et al. 2000


Average daily maximum ozone ppb

Ratios of NMHC Source Contributions on

Sunday and Saturday to Average Weekday

23

Fujita et al. 2000


Average daily maximum ozone ppb

Estimation of Relative Contributions of On-Road

Spark-Ignition and Compression-Ignition Vehicles

[

BC

]

BCci

VMTci

=

x

[

MTBE

]

MTBEsi

VMTsi

where

[

BC

] = measured black carbon concentration in µg/m3 or [nC10-nC15] from Tenax,

[

MTBE

] = measured MTBE concentrations in µg/m3,

BCci

= assumed average CI emission rate of black carbon in grams/mile or heavy HC, and

MTBEsi

= assumed average SI emission rate of MTBE in grams/mile.

VMTci

[

BC

]

MTBEsi

The ratio of VMT,

A

=

=

x

VMTsi

[

MTBE

]

BCci

Ratio of the CI and SI source contribution estimates (sce) to NO can be estimated from

A

and assumed average NO emission rates for CI and SI as follows.

NOsceci

NOci

=

x

A

Analogous estimates for NMHC and CO.

NOscesi

NOsi

A

can also be estimated from [CO] and [NO].

[

CO

] is proportional to

COci

x

VMTci

+

COsi

x

VMTsi

and

[

NO

] is proportional to

NOci

x

VMTci

+

NOsi

x

VMT si

where

[

CO

] = measured carbon monoxide concentration in µg/m3,

[

NO

] = measured nitric oxide concentrations in µg/m3,

COci

and

COsi

= assumed average CI and SI emission rates of CO in grams/mile, and

NOci

and

NOsi

= assumed average CI and SI emission rates of NO in grams/mile.

1.

A

is determined from the following equation.

1

+

[

CO

]

COciA

COsi

=

+

[

NO

]

NOciA

NOsi

Fujita et al. 2000

25


  • Login