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Simultaneous factor analysis of organic particle and gas mass spectra: AMS and PTR-MS measurements at an urban site
organic particle gas mass spectra AMS PTR-MS
2010/2/21
During the winter component of the SPORT (Seasonal Particle Observations in the Region of Toronto) field campaign, particulate non-refractory chemical composition and concentration of selected volatil...
Impacts of land surface properties and atmospheric CO2 on the Last Glacial Maximum climate：a factor separation analysis
land surface properties atmospheric CO2 Last Glacial Maximum climate
2009/12/3
Many sensitivity studies have been carried out, using climate models of different degrees of complexity to test the climate response to Last Glacial Maximum boundary conditions. Here, instead of addin...
Precipitation of Ice Needles as a Factor Causing Disappearance of Fog
Precipitation Ice Needles Factor Causing Disappearance Fog
2009/6/22
Precipitation of Ice Needles as a Factor Causing Disappearance of Fog.
A Comparative Study of Air Quality Index Based on Factor Analysis and US-EPA Methods for an Urban Environment
Eclipsing effect Maximum operator concept (MOC) Principal component analysis (PCA) Variance, Ranking
2016/3/29
There are many different air quality indexes, which represent the global urban air pollution situation.
Although the index proposed by USEPA gives an overall assessment of air quality, it does not in...
Assessing positive matrix factorization model fit: a new method to estimate uncertainty and bias in factor contributions at the measurement time scale
Assessing positive matrix factorization model factor contributions measurement time scale
2009/3/12
A Positive Matrix Factorization receptor model for aerosol pollution source apportionment was fit to a synthetic dataset simulating one year of daily measurements of ambient PM2.5 concentrations, comp...
The Tropical Forest and Fire Emissions Experiment: overview and airborne fire emission factor measurements
Tropical Forest Fire Emissions Experiment airborne fire emission factor
2008/12/22
The Tropical Forest and Fire Emissions Experiment (TROFFEE) used laboratory measurements followed by airborne and ground based field campaigns during the 2004 Amazon dry season to quantify the emissio...
Source apportionment of submicron organic aerosols at an urban site by factor analytical modelling of aerosol mass spectra
submicron organic aerosols aerosol mass spectra
2008/12/4
Submicron ambient aerosol was characterized in summer 2005 at an urban background site in Zurich, Switzerland, during a three-week measurement campaign. Highly time-resolved samples of non-refractory ...
In this technical note we present the exact form of the Zeldovich factor for heterogeneous nucleation on spherical pre-existing particles. We study the error caused by planar pre-existing surface appr...
Evaluation of model-simulated source contributions to tropospheric ozone with aircraft observations in the factor-projected space
Evaluation of model-simulated source contributions to tropospheric ozone with aircraft observations in the factor-projected space
2008/11/3
Trace gas measurements of TOPSE and TRACE-P experiments and corresponding global GEOS-Chem model simulations are analyzed with the Positive Matrix Factorization (PMF) method for model evaluation purpo...