Zobrazeno 1 - 10
of 43
pro vyhledávání: '"K D, Froyd"'
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:
M. S. F. Kacenelenbogen, Q. Tan, S. P. Burton, O. P. Hasekamp, K. D. Froyd, Y. Shinozuka, A. J. Beyersdorf, L. Ziemba, K. L. Thornhill, J. E. Dibb, T. Shingler, A. Sorooshian, R. W. Espinosa, V. Martins, J. L. Jimenez, P. Campuzano-Jost, J. P. Schwarz, M. S. Johnson, J. Redemann, G. L. Schuster
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 3713-3742 (2022)
Improvements in air quality and Earth's climate predictions require improvements of the aerosol speciation in chemical transport models, using observational constraints. Aerosol speciation (e.g., organic aerosols, black carbon, sulfate, nitrate, ammo
Externí odkaz:
https://doaj.org/article/120cd3f83f4d4f8fa6b818625ad0f260
Publikováno v:
Geoscientific Model Development, Vol 15, Pp 467-491 (2022)
The global Flow-following finite-volume Icosahedral Model (FIM), which was developed in the Global Systems Laboratory (GSL) of NOAA, has been coupled inline with aerosol and gas-phase chemistry schemes of different complexity using the chemistry and
Externí odkaz:
https://doaj.org/article/7452798c65ae4cf98514eaebdc8a76ed
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
Autor:
A. Kupc, C. J. Williamson, A. L. Hodshire, J. Kazil, E. Ray, T. P. Bui, M. Dollner, K. D. Froyd, K. McKain, A. Rollins, G. P. Schill, A. Thames, B. B. Weinzierl, J. R. Pierce, C. A. Brock
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 15037-15060 (2020)
Global observations and model studies indicate that new particle formation (NPF) in the upper troposphere (UT) and subsequent particles supply 40 %–60 % of cloud condensation nuclei (CCN) in the lower troposphere, thus affecting the Earth's rad
Externí odkaz:
https://doaj.org/article/1dcd0511cea648efa888f7f7d345238b
Autor:
A. Hodzic, P. Campuzano-Jost, H. Bian, M. Chin, P. R. Colarco, D. A. Day, K. D. Froyd, B. Heinold, D. S. Jo, J. M. Katich, J. K. Kodros, B. A. Nault, J. R. Pierce, E. Ray, J. Schacht, G. P. Schill, J. C. Schroder, J. P. Schwarz, D. T. Sueper, I. Tegen, S. Tilmes, K. Tsigaridis, P. Yu, J. L. Jimenez
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 4607-4635 (2020)
The spatial distribution and properties of submicron organic aerosol (OA) are among the key sources of uncertainty in our understanding of aerosol effects on climate. Uncertainties are particularly large over remote regions of the free troposphere an
Externí odkaz:
https://doaj.org/article/b8ac87a02ca74bfc831f0970fbb2e666
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