Estimated contributions of primary and secondary organic aerosol from fossil fuel combustion during the CalNex and Cal-Mex campaigns

Abstract

1. Scope -is the work directly or implicitly related to atmospheric composition? 2. Novelty -does the work provide a) a general and/or broader relevance (e.g. not a pure local study), b) new results or methods, and c) does it add significantly to the knowledge of atmospheric composition and its impacts?3. Quality -does the work contain high quality a) atmospheric observations, b) process studies, c) modeling exercises or d) data analysis?Will your paper be within the scope of Atmospheric Environment?We try to be flexible with novel scientific articles on issues of atmospheric composition even, if they are not directly related to atmospheric measurements (e.g. wind tunnel studies, dynamometer studies, remote sensing retrieval, etc). However, we are still cautious of purely mathematical derivations, preliminary results or insignificant case and local studies. The authors should make sure that the articles contain substantial contributions to the science of atmospheric composition before sending them for review.

High summertime aerosol organic functional group concentrations from marine and seabird sources at Ross Island, Antarctica, during AWARE

“…The FFC factor has alkane and amine groups that account for 80 % OM (Fig. 4), which is consistent with urban combustion emissions and vehicle engine tests (Guzman-Morales et al, 2014;Saliba et al, 2017). The FFC factor was 73 % OM in winter but only 23 % in summer ( Fig.…”

“…The FFC cluster and factor are similar to each other (cosine similarity = 0.97) and are both named because of the similarity of the spectra to factors identified as FFC previously (Price et al, 2017;Guzman-Morales et al, 2014;Saliba et al, 2017). The FFC factor has two narrow peaks at 2865 and 2934 cm −1 that are characteristic of long-chain hydrocarbons and a cosine similarity greater than 0.8 with factor spectra identified previously as urban combustion emissions (Guzman-Morales et al, 2014) and fresh ship engine emissions (Price et al, 2017).…”

High Summertime Aerosol Organic Functional Group Concentrations from Marine and Seabird Sources at Ross Island, Antarctica, during AWARE

“…The FFC cluster and factor are similar to each other (cosine similarity=0.97) and are both named because of the similarity of the spectra to factors identified as FFC previously (Price et al, 2017;Guzman-Morales et al, 2014;Saliba et al, 2017) . The FFC Factor has two narrow peaks at 2865 and 2934 cm -1 that are characteristic of long-chain hydrocarbons and a cosine similiarity greater than 0.8 with factors identified as urban combustion emissions (Guzman-Morales et al, 2014) and fresh ship engine emissions (Price et al, 2017) .…”

“…The FFC Factor has two narrow peaks at 2865 and 2934 cm -1 that are characteristic of long-chain hydrocarbons and a cosine similiarity greater than 0.8 with factors identified as urban combustion emissions (Guzman-Morales et al, 2014) and fresh ship engine emissions (Price et al, 2017) . The FFC factor has alkane and amine groups that account for 80% of OM ( Figure 5 4), which is consistent with urban combustion emissions and vehicle engine tests (Guzman-Morales et al, 2014;Saliba et al, 2017) . The FFC factor was 73% of organic mass in winter but only 23% in summer (Figure 3 (a) and (b)).…”

Chemical Composition of Diesel/Biodiesel Particulate Exhaust by FTIR Spectroscopy and Mass Spectrometry: Impact of Fuel and Driving Cycle

“…Adsorbed chemical contribution from organic carbon or inorganic fly ash greatly increases the PM overall molecular and structural complexity (Kleeman et al, 2000;Sakurai et al, 2003;Toner et al, 2006). In fact, unburned organic components may make up to 90% of PM mass depending on the engine operating conditions (Chow et al, 2007), and generally account for a significant mass fraction (Coury and Dillner, 2009;Guzman-Morales et al, 2014).…”