Major components of suspended particulate matter (PM) are inorganic ions, organic matter
(OM), elemental carbon (EC), geological minerals, salt, non-mineral elements, and water …

Abstract The 1999 Regional Haze Rule provides a context for this review of visibility, the
science that describes it, and the use of that science in regulatory guidance. The scientific …

This report is the first complete assessment of the science of climate change since Working
Group I (WGI) of the IPCC produced its second report Climate Change 1995: The Science of …

Thermally derived carbon fractions including organic carbon (OC) and elemental carbon
(EC) have been reported for the US Interagency Monitoring of PROtected Visual …

One of the most important parts of formulating a National Ambient Air Quality Standard is
specifying the measurement methods for determining and attaining compliance. The …

Carbonaceous aerosols affect the radiative balance of the Earth by absorbing and scattering
light. While black carbon (BC) is highly absorbing, some organic carbon (OC) also has …

Although organic compounds typically constitute a substantial fraction of the fine particulate
matter (PM) in the atmosphere, their molecular composition remains poorly characterized …

SJVAQS/AUSPEX acquired PM2. 5 and PM10 samples at ten sites in Central California for
five ozone episodes over 14 intensive sampling days. Four sample sets per day were …

Real-time, online measurements of atmospheric organic aerosol (OA) composition are an
essential tool for determining the emissions sources and physicochemical processes …

Although organics constitute approximately 10–70% of the total dry fine particle mass in the
atmosphere, their concentrations and formation mechanisms are less well understood than …