Zobrazeno 1 - 10
of 838
pro vyhledávání: '"A. Kupc"'
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 1863-1877 (2023)
While formation and growth of particles in the troposphere have been extensively studied in the past two decades, very limited efforts have been devoted to understanding these in the stratosphere. Here we use both Cosmics Leaving OUtdoor Droplets (CL
Externí odkaz:
https://doaj.org/article/d448dab87df2481abab69dcd493534e2
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. Ranjithkumar, H. Gordon, C. Williamson, A. Rollins, K. Pringle, A. Kupc, N. L. Abraham, C. Brock, K. Carslaw
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 4979-5014 (2021)
Understanding the vertical distribution of aerosol helps to reduce the uncertainty in the aerosol life cycle and therefore in the estimation of the direct and indirect aerosol forcing. To improve our understanding, we use measurements from four deplo
Externí odkaz:
https://doaj.org/article/31567a4f547e4c398a2195860c24c939
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:
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
Autor:
C. A. Brock, C. Williamson, A. Kupc, K. D. Froyd, F. Erdesz, N. Wagner, M. Richardson, J. P. Schwarz, R.-S. Gao, J. M. Katich, P. Campuzano-Jost, B. A. Nault, J. C. Schroder, J. L. Jimenez, B. Weinzierl, M. Dollner, T. Bui, D. M. Murphy
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 3081-3099 (2019)
From 2016 to 2018 a DC-8 aircraft operated by the US National Aeronautics and Space Administration (NASA) made four series of flights, profiling the atmosphere from 180 m to ∼12 km above sea level (km a.s.l.) from the Arctic to the Antarctic
Externí odkaz:
https://doaj.org/article/0922706905224d26a49f2baeaa2a8d8f
Autor:
D. M. Murphy, K. D. Froyd, H. Bian, C. A. Brock, J. E. Dibb, J. P. DiGangi, G. Diskin, M. Dollner, A. Kupc, E. M. Scheuer, G. P. Schill, B. Weinzierl, C. J. Williamson, P. Yu
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 4093-4104 (2019)
We present the first data on the concentration of sea-salt aerosol throughout most of the depth of the troposphere and over a wide range of latitudes, which were obtained during the Atmospheric Tomography (ATom) mission. Sea-salt concentrations in th
Externí odkaz:
https://doaj.org/article/4c3f3930758d4a718fa981acc8078cfd
Autor:
C. Williamson, A. Kupc, J. Wilson, D. W. Gesler, J. M. Reeves, F. Erdesz, R. McLaughlin, C. A. Brock
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 3491-3509 (2018)
Earth's radiation budget is affected by new particle formation (NPF) and the growth of these nanometre-scale particles to larger sizes where they can directly scatter light or act as cloud condensation nuclei (CCN). Large uncertainties remain in t
Externí odkaz:
https://doaj.org/article/98baba5a0ad74522bda9618e6fc227d4