Identification

Title

Characterization and nonparametric regression of rural and urban coarse particulate matter mass concentrations in northeastern Colorado

Abstract

The Colorado Coarse Rural Urban Sources and Health study (CCRUSH) is an ongoing study of the relationship between coarse particulate mass concentrations (PM₁₀₋₂.₅, particulate matter with diameter between 2.5 and 10 μm) and selected health effects. For two urban monitoring sites in Denver, CO, and two comparatively rural sites in Greeley, CO, hourly mass concentrations of PM₁₀₋₂.₅ and fine particulate matter (PM₂.₅, diameter less than 2.5 μm) have been measured by using dichotomous tapered element oscillating microbalances (TEOMs) with Filter Dynamics Measurement Systems (FDMS). This paper presents air quality results from just over a year of PM₂.₅ and PM₁₀₋₂.₅ measurements. Average PM₂.₅ concentrations ranged from 7.7 to 9.2 μg m⁻³ across the four sites with higher concentrations in Denver than Greeley. Average PM₁₀₋₂.₅ concentrations ranged from 9.0 to 15.5 μg m⁻³ with the highest values at the site in northeast Denver. Temporal variability in PM₁₀₋₂.₅ was higher than that in PM₂.₅ concentrations at all four sites. The two Greeley sites displayed moderate spatial correlation for PM₂.₅ and high correlation for PM₁₀₋₂.₅, whereas the two Denver sites showed lower spatial correlation for both PM sizes. PM₁₀₋₂.₅ concentrations in Denver were highest with winds from the direction of the city's urban core. PM₁₀₋₂.₅ concentrations in Greeley were moderately elevated with winds from the southwest to the northwest, coming from Denver and other large Front Range communities. Wind speed regressions for PM₁₀₋₂.₅ at the Denver sites primarily exhibited resuspension effects, while PM₁₀₋₂.₅ concentrations in Greeley showed relatively complex wind speed dependence.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7zk5hcq

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

2012-01-01T00:00:00Z

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