Zobrazeno 1 - 10
of 259
pro vyhledávání: '"D A, Farmer"'
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 6, Pp n/a-n/a (2024)
Abstract Wildfires are increasing across the USA. While smoke events affect human exposure and air quality, wildfire smoke effects on ecosystem‐atmosphere interactions are poorly understood. We investigate smoke effects on biogenic volatile organic
Externí odkaz:
https://doaj.org/article/7cfc5c90d22946f29064403da7621a7c
Autor:
A. L. Hodshire, E. Ramnarine, A. Akherati, M. L. Alvarado, D. K. Farmer, S. H. Jathar, S. M. Kreidenweis, C. R. Lonsdale, T. B. Onasch, S. R. Springston, J. Wang, Y. Wang, L. I. Kleinman, A. J. Sedlacek III, J. R. Pierce
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 6839-6855 (2021)
Biomass burning emits vapors and aerosols into the atmosphere that can rapidly evolve as smoke plumes travel downwind and dilute, affecting climate- and health-relevant properties of the smoke. To date, theory has been unable to explain observed vari
Externí odkaz:
https://doaj.org/article/a891b962e9494b0db5b70985485b0157
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 4123-4139 (2020)
Plants emit considerable quantities of volatile organic compounds (VOCs), the identity and amount of which vary with temperature, light, and other environmental factors. Portable photosynthesis systems are a useful method for simultaneously quantifyi
Externí odkaz:
https://doaj.org/article/4a5b1fc5c8234bd694376d1353f01c37
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 13813-13838 (2018)
Laboratory-based studies have shown that combustion sources emit volatile organic compounds that can be photooxidized in the atmosphere to form secondary organic aerosol (SOA). In some cases, this SOA can exceed direct emissions of primary organic
Externí odkaz:
https://doaj.org/article/362e04fe9767403489012a8a04836326
Autor:
J. M. Mattila, P. Brophy, J. Kirkland, S. Hall, K. Ullmann, E. V. Fischer, S. Brown, E. McDuffie, A. Tevlin, D. K. Farmer
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 12315-12327 (2018)
We measured organic and inorganic gas-phase acids in the Front Range of Colorado to better understand their tropospheric sources and sinks using a high-resolution time-of-flight chemical ionization mass spectrometer. Measurements were conducted fr
Externí odkaz:
https://doaj.org/article/6d640583e79549bdb67445fdf2d64e7e
Autor:
J. Lindaas, D. K. Farmer, I. B. Pollack, A. Abeleira, F. Flocke, R. Roscioli, S. Herndon, E. V. Fischer
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 10691-10707 (2017)
The relative importance of wildfire smoke for air quality over the western US is expected to increase as the climate warms and anthropogenic emissions decline. We report on in situ measurements of ozone (O3), a suite of volatile organic compounds
Externí odkaz:
https://doaj.org/article/3fe9054072e24d5a9746024d8df752d9
Autor:
S. H. Jathar, C. Heppding, M. F. Link, D. K. Farmer, A. Akherati, M. J. Kleeman, J. A. de Gouw, P. R. Veres, J. M. Roberts
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 8959-8970 (2017)
Isocyanic acid (HNCO), an acidic gas found in tobacco smoke, urban environments, and biomass-burning-affected regions, has been linked to adverse health outcomes. Gasoline- and diesel-powered engines and biomass burning are known to emit HNCO and
Externí odkaz:
https://doaj.org/article/116f9d300cfe4e798d94e0cf681bce05
Autor:
A. J. Abeleira, D. K. Farmer
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 6517-6529 (2017)
Contrary to most regions in the US, ozone in the northern Front Range metropolitan area (NFRMA) of Colorado was either stagnant or increasing between 2000 and 2015, despite substantial reductions in NOx emissions. We used available long-term ozone
Externí odkaz:
https://doaj.org/article/e5d51b230e874efb85750bd7863ee511
Publikováno v:
Atmospheric Measurement Techniques, Vol 10, Pp 2117-2127 (2017)
Volatilization and subsequent processing in the atmosphere are an important environmental pathway for the transport and chemical fate of pesticides. However, these processes remain a particularly poorly understood component of pesticide lifecycles
Externí odkaz:
https://doaj.org/article/26c4463487054111ad9365f93b91c5c3
Autor:
P. Brophy, D. K. Farmer
Publikováno v:
Atmospheric Measurement Techniques, Vol 9, Iss 8, Pp 3969-3986 (2016)
We present a comprehensive characterization of cluster control and transmission through the Tofwerk atmospheric pressure interface installed on various chemical ionization time-of-flight mass spectrometers using authentic standards. This characteriza
Externí odkaz:
https://doaj.org/article/ee7e84b3f0dd49fca5a1f09f7fa69e5a