Zobrazeno 1 - 10
of 65
pro vyhledávání: '"C. P. Brock"'
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:
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:
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:
R. H. Moore, E. B. Wiggins, A. T. Ahern, S. Zimmerman, L. Montgomery, P. Campuzano Jost, C. E. Robinson, L. D. Ziemba, E. L. Winstead, B. E. Anderson, C. A. Brock, M. D. Brown, G. Chen, E. C. Crosbie, H. Guo, J. L. Jimenez, C. E. Jordan, M. Lyu, B. A. Nault, N. E. Rothfuss, K. J. Sanchez, M. Schueneman, T. J. Shingler, M. A. Shook, K. L. Thornhill, N. L. Wagner, J. Wang
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 4517-4542 (2021)
We evaluate the sensitivity of the size calibrations of two commercially available, high-resolution optical particle sizers to changes in aerosol composition and complex refractive index (RI). The Droplet Measurement Technologies Ultra-High Sensitivi
Externí odkaz:
https://doaj.org/article/ecfe51c58689458e94e56a31d8cfb5b9
Autor:
C. C. Womack, K. M. Manfred, N. L. Wagner, G. Adler, A. Franchin, K. D. Lamb, A. M. Middlebrook, J. P. Schwarz, C. A. Brock, S. S. Brown, R. A. Washenfelder
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 7235-7252 (2021)
Biomass burning aerosol is a major source of PM2.5, and significantly affects Earth's radiative budget. The magnitude of its radiative effect is poorly quantified due to uncertainty in the optical properties of aerosol formed from biomass burning. Us
Externí odkaz:
https://doaj.org/article/62a607f2b79c47e5be68594796e1d998
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. Bougiatioti, A. Nenes, J. J. Lin, C. A. Brock, J. A. de Gouw, J. Liao, A. M. Middlebrook, A. Welti
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 12163-12176 (2020)
Here we analyze regional-scale data collected on board the NOAA WP-3D aircraft during the 2013 Southeast Nexus (SENEX) campaign to study the aerosol–cloud droplet link and quantify the sensitivity of droplet number to aerosol number, chemical compo
Externí odkaz:
https://doaj.org/article/189d8510f6b84ad5a0b52761fba602e9
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