Identification

Title

Impacts of black carbon aerosol on photolysis and ozone

Abstract

The regional distributions of black carbon aerosol ( soot) are calculated and the impacts of black carbon aerosol on photolysis frequencies and ozone concentrations are evaluated in Houston, Texas, using a regional chemical transport model. Compared with measurements of the fine particle matter in the Houston area, the simulated daily mean black carbon aerosol concentration is in agreement with observations in the urban sites. Black carbon aerosol reduces the photolysis frequencies of J[O-3(D-1)] and J[NO2] in the planetary boundary layer by 10 - 30% when air pollution is highest in the Houston area. As a result, the ground level ozone concentration in the Houston area decreases by 5 - 20%. Our study demonstrates that the impacts of black carbon aerosol on photochemistry are important in polluted urban atmospheres.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7b56k25

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2005-12-06T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact