FRAPPE – Front Range Air Pollution and Photochemistry Experiment

SUMMARY
The objective of FRAPPE is to determine the factors that control ground level ozone on the Northern Front Range of the Rocky Mountains and improve the understanding of these processes so as to develop better models and support informed decision making. The FRAPPÉ field project was designed to investigate and quantify all factors contributing to air quality in the Colorado Front Range with a special focus on summertime ozone pollution. These factors include:

• Man-made emissions from human activities such as transportation,
energy generation, industry, oil and gas activities, and agriculture
• Natural emissions from vegetation and emissions from possible
wildfires
• Long-range transport of pollution from other western states or
cross-continental transport from Asia
• Downward transport of stratospheric air is another potential
source for ground level ozone

How all these sources together with the unique meteorology and flow patterns in the region contribute to ground level ozone was investigated. Ozone was a main focus, but measurements of particles, their chemical composition, size and optical properties to quantify particle pollution and its sources also were taken.

FUNDING SOURCE
State of Colorado, National Science Foundation

RESEARCH GROUPS
Collaborative effort between CDPHE, University of Colorado, Colorado State University, UC Berkeley, NASA, NOAA, and NCAR

AUTHORS/PRINCIPLE INVESTIGATORS
Gabi Pfister (NCAR), Frank Flocke (NCAR), Jim Crawford (NASA)

STUDY LOCATION
Front Range

COMPLETION DATE
8/16 2014 Publications expected in Summer and Fall 2015

COPY OF STUDY OR MORE INFORMATION
https://www2.acd.ucar.edu/frappe

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