Zobrazeno 1 - 10
of 170
pro vyhledávání: '"D M, Murphy"'
Autor:
X. Shen, D. M. Bell, H. Coe, N. Hiranuma, F. Mahrt, N. A. Marsden, C. Mohr, D. M. Murphy, H. Saathoff, J. Schneider, J. Wilson, M. A. Zawadowicz, A. Zelenyuk, P. J. DeMott, O. Möhler, D. J. Cziczo
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 10869-10891 (2024)
Knowledge of the chemical composition and mixing state of aerosols at a single-particle level is critical for gaining insights into atmospheric processes. One common tool to make these measurements is single-particle mass spectrometry. There remains
Externí odkaz:
https://doaj.org/article/7592aa24150140908b8a06c37f513640
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 8263-8275 (2024)
Each year, commercial ships emit over 1.67 Tg of particulate matter (PM) pollution into the atmosphere. These ships rely on the combustion of heavy fuel oil, which contains high levels of sulfur, large aromatic organic compounds, and metals. Vanadium
Externí odkaz:
https://doaj.org/article/b4146320cf23435d8187d0f978c52c4f
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 13659-13676 (2022)
Dust aerosols affect the radiative and energy balance at local and global scales by scattering and absorbing sunlight and infrared light. A previous study suggests that dust size distribution is one of the major sources of uncertainty in modeling the
Externí odkaz:
https://doaj.org/article/e13869d6e22c4353b2b5d56582d8d4a6
Autor:
A. T. Ahern, F. Erdesz, N. L. Wagner, C. A. Brock, M. Lyu, K. Slovacek, R. H. Moore, E. B. Wiggins, D. M. Murphy
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 1093-1105 (2022)
Validation of remote sensing retrievals of aerosol microphysical and optical properties requires in situ measurements of the same properties. We present here an improved imaging nephelometer for measuring the directionality and polarization of light
Externí odkaz:
https://doaj.org/article/8bc48895704443c4a24b67b5556a9eba
Autor:
Michelle Brennan, M. J. McDonnell, M. J. Harrison, N. Duignan, A. O’Regan, D. M. Murphy, C. Ward, R. M. Rutherford
Publikováno v:
Respiratory Research, Vol 23, Iss 1, Pp 1-11 (2022)
Abstract Background Unfortunately, many COPD patients continue to exacerbate despite good adherence to GOLD Class D recommended therapy. Acute exacerbations lead to an increase in symptoms, decline in lung function and increased mortality rate. The p
Externí odkaz:
https://doaj.org/article/a641c1bdb0b844d79ed48dd7f99133b5
Autor:
C. A. Brock, K. D. Froyd, M. Dollner, C. J. Williamson, G. Schill, D. M. Murphy, N. J. Wagner, A. Kupc, J. L. Jimenez, P. Campuzano-Jost, B. A. Nault, J. C. Schroder, D. A. Day, D. J. Price, B. Weinzierl, J. P. Schwarz, J. M. Katich, S. Wang, L. Zeng, R. Weber, J. Dibb, E. Scheuer, G. S. Diskin, J. P. DiGangi, T. Bui, J. M. Dean-Day, C. R. Thompson, J. Peischl, T. B. Ryerson, I. Bourgeois, B. C. Daube, R. Commane, S. C. Wofsy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 15023-15063 (2021)
In situ measurements of aerosol microphysical, chemical, and optical properties were made during global-scale flights from 2016–2018 as part of the Atmospheric Tomography Mission (ATom). The NASA DC-8 aircraft flew from ∼ 84∘ N to ∼ 86∘ S l
Externí odkaz:
https://doaj.org/article/b30fdb8716f74ea1840853dee12c509c
Autor:
D. M. Murphy, K. D. Froyd, I. Bourgeois, C. A. Brock, A. Kupc, J. Peischl, G. P. Schill, C. R. Thompson, C. J. Williamson, P. Yu
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 8915-8932 (2021)
The size of aerosol particles has fundamental effects on their chemistry and radiative effects. We explore those effects using aerosol size and composition data in the lowermost stratosphere along with calculations of light scattering. In the size ra
Externí odkaz:
https://doaj.org/article/5d0d11f88a96482d9289c4f42e8b9a4f
Autor:
C. J. Williamson, A. Kupc, A. Rollins, J. Kazil, K. D. Froyd, E. A. Ray, D. M. Murphy, G. P. Schill, J. Peischl, C. Thompson, I. Bourgeois, T. B. Ryerson, G. S. Diskin, J. P. DiGangi, D. R. Blake, T. P. V. Bui, M. Dollner, B. Weinzierl, C. A. Brock
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 9065-9088 (2021)
The details of aerosol processes and size distributions in the stratosphere are important for both heterogeneous chemistry and aerosol–radiation interactions. Using in situ, global-scale measurements of the size distribution of particles with diame
Externí odkaz:
https://doaj.org/article/3dbf6460eb5644018f42b0a3de542ab3
Publikováno v:
Respiratory Research, Vol 20, Iss 1, Pp 1-5 (2019)
Abstract Background Increased numbers of blood and sputum eosinophils are associated with higher exacerbation frequency and increased asthma severity. In clinical trials, targeting Interleukin-5 has been shown to be a useful therapeutic strategy for
Externí odkaz:
https://doaj.org/article/70c795eb6a0146b690fc3656a1ab0e0c
Autor:
K. D. Froyd, D. M. Murphy, C. A. Brock, P. Campuzano-Jost, J. E. Dibb, J.-L. Jimenez, A. Kupc, A. M. Middlebrook, G. P. Schill, K. L. Thornhill, C. J. Williamson, J. C. Wilson, L. D. Ziemba
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 6209-6239 (2019)
Single-particle mass spectrometry (SPMS) instruments characterize the composition of individual aerosol particles in real time. Their fundamental ability to differentiate the externally mixed particle types that constitute the atmospheric aerosol pop
Externí odkaz:
https://doaj.org/article/2d7ff67af540401f81c6df3e34ac8e9f