Positive matrix factorization of organic aerosol: insights from a chemical transport model
نویسندگان
چکیده
منابع مشابه
Interpretation of organic components from positive matrix factorization of aerosol mass spectrometric data
The organic aerosol (OA) dataset from an Aerodyne Aerosol Mass Spectrometer (Q-AMS) collected at the Pittsburgh Air Quality Study (PAQS) in September 2002 was analyzed with Positive Matrix Factorization (PMF). Three components – hydrocarbon-like organic aerosol OA (HOA), a highly-oxygenated OA (OOA-1) that correlates well with sulfate, and a less-oxygenated, semi-volatile OA (OOA-2) that correl...
متن کاملInteractive comment on “Interpretation of organic components from positive matrix factorization of aerosol mass spectrometric data” by I. M. Ulbrich
This manuscript contains an extensive analysis of what happens when Q-mode Aerosol Mass Spectrometer (Q-AMS) data are analyzed by the PMF model, using the program PMF2. The authors have attempted to find limits of what may be reliably deduced about the sources of organic aerosol in such analysis. As a result of their work, they express caveats against interpreting the results too strongly. This...
متن کاملInteractive comment on “Interpretation of organic components from positive matrix factorization of aerosol mass spectrometric data” by I. M. Ulbrich
My first review submission has caused misunderstandings. (1) I wrote that a second review is needed. This means the following: when a number of changes are requested in a manuscript, then the editors often wish to know if the reviewer(s) wish to see the final manuscript before it is accepted for publication. In this case, I request a number of changes. My remark about the second review means th...
متن کاملSecondary organic aerosol in the global aerosol – chemical transport model Oslo CTM2
The global chemical transport model Oslo CTM2 has been extended to include the formation, transport and deposition of secondary organic aerosol (SOA). Precursor hydrocarbons which are oxidised to form condensible species include both biogenic species such as terpenes and isoprene, as well as species emitted predominantly by anthropogenic activities (toluene, m-xylene, methylbenzene and other ar...
متن کاملApplication of positive matrix factorization in estimating aerosol secondary organic carbon in Hong Kong and its relationship with secondary sulfate
Secondary organic carbon (SOC) is often a significant portion of organic carbon (OC) in ambient particulate matter (PM). The levels and seasonal patterns of SOC in Hong Kong were examined using more than 2000 PM10 measurements made over a 4.5-year period (1998–2002) in a network of ten air quality monitoring stations. The positive matrix factorization (PMF) model was used to analyze this large ...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2019
ISSN: 1680-7324
DOI: 10.5194/acp-19-973-2019