"The goal of the proposed research is to monitor changes in the particle size and chemical speciation of individual atmospheric aerosol particles over relatively short time intervals. Correlations will be established between fluctuations in aerosol particle size/composition distributions, gas phase measurements (i.e. NOx, ozone, NH3, HNO3), and meteorological conditions (wind speed, direction, relative humidity, temperature)... Using these real-time measurement capabilities [aerosol time-of-flight mass spectrometry (ATOFMS)], we will characterize temporal and spatial variations of atmospheric aerosol particles. These variations will be correlated with gas phase species concentrations, time of day, and meteorological conditions..."
1. Aggregation to longer averaging times (monthly, seasonal, annual means)
2. Supplemental rain chemistry data (merged from US & Canadian networks, and aggregated to similar averageing times as #1
Regarding #1, issues include data completeness (how many samples for a "valid" monthly mean?) and missing data (how to handle "below MDL" values in averaging?)
Regarding #2, comparing space/time patterns in aerosol and wet deposition for SO4, NO3, Ca, Mg, K, and NH4 could be illuminating...
"The goal of the proposed research is to monitor changes in the particle size and chemical speciation of individual atmospheric aerosol particles over relatively short time intervals. Correlations will be established between fluctuations in aerosol particle size/composition distributions, gas phase measurements (i.e. NOx, ozone, NH3, HNO3), and meteorological conditions (wind speed, direction, relative humidity, temperature)... Using these real-time measurement capabilities [aerosol time-of-flight mass spectrometry (ATOFMS)], we will characterize temporal and spatial variations of atmospheric aerosol particles. These variations will be correlated with gas phase species concentrations, time of day, and meteorological conditions..."
Finally, I would like to see the ozone and PMf data assessment folks merged.
ava
Finally, I would like to see the ozone and PMf data assessment folks merged.
ava
Operations of PM-2.5 monitoring networks, quality control, and data analysis.