Zobrazeno 1 - 10
of 22
pro vyhledávání: '"N P, O'Neill"'
Autor:
L. Ivănescu, N. T. O'Neill
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 6111-6121 (2023)
We explored the improvement in starphotometry accuracy using a multi-star Langley calibration in lieu of the more traditional one-star Langley approach. Our goal was a 0.01 calibration-constant repeatability accuracy, at an operational sea-level faci
Externí odkaz:
https://doaj.org/article/bf43796f5758442cbf4dce4621a16f28
Autor:
S. A. Sayedain, N. T. O'Neill, J. King, P. L. Hayes, D. Bellamy, R. Washington, S. Engelstaedter, A. Vicente-Luis, J. Bachelder, M. Bernhard
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 4115-4135 (2023)
There is growing recognition that high-latitude dust (HLD), originating from local drainage-basin flows, is the dominant source for certain important phenomena such as particle deposition on snow/ice. The analysis of such local plumes (including a be
Externí odkaz:
https://doaj.org/article/fb9c0608cd6e488590a6fb33e1f12cbd
Autor:
N. T. O'Neill, K. Ranjbar, L. Ivănescu, T. F. Eck, J. S. Reid, D. M. Giles, D. Pérez-Ramírez, J. P. Chaubey
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 1103-1120 (2023)
The sub-micron (SM) aerosol optical depth (AOD) is an optical separation based on the fraction of particles below a specified cutoff radius of the particle size distribution (PSD) at a given particle radius. It is fundamentally different from spectra
Externí odkaz:
https://doaj.org/article/60f65ad75a144662b6feff39fc0646a8
Autor:
O. Meinander, P. Dagsson-Waldhauserova, P. Amosov, E. Aseyeva, C. Atkins, A. Baklanov, C. Baldo, S. L. Barr, B. Barzycka, L. G. Benning, B. Cvetkovic, P. Enchilik, D. Frolov, S. Gassó, K. Kandler, N. Kasimov, J. Kavan, J. King, T. Koroleva, V. Krupskaya, M. Kulmala, M. Kusiak, H. K. Lappalainen, M. Laska, J. Lasne, M. Lewandowski, B. Luks, J. B. McQuaid, B. Moroni, B. Murray, O. Möhler, A. Nawrot, S. Nickovic, N. T. O’Neill, G. Pejanovic, O. Popovicheva, K. Ranjbar, M. Romanias, O. Samonova, A. Sanchez-Marroquin, K. Schepanski, I. Semenkov, A. Sharapova, E. Shevnina, Z. Shi, M. Sofiev, F. Thevenet, T. Thorsteinsson, M. Timofeev, N. S. Umo, A. Uppstu, D. Urupina, G. Varga, T. Werner, O. Arnalds, A. Vukovic Vimic
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 11889-11930 (2022)
Dust particles from high latitudes have a potentially large local, regional, and global significance to climate and the environment as short-lived climate forcers, air pollutants, and nutrient sources. Identifying the locations of local dust sources
Externí odkaz:
https://doaj.org/article/826e8964c6d04ff793d125436f2c913e
Autor:
P. Xian, J. Zhang, N. T. O'Neill, T. D. Toth, B. Sorenson, P. R. Colarco, Z. Kipling, E. J. Hyer, J. R. Campbell, J. S. Reid, K. Ranjbar
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 9915-9947 (2022)
We present an Arctic aerosol optical depth (AOD) climatology and trend analysis for 2003–2019 spring and summertime periods derived from a combination of multi-agency aerosol reanalyses, remote-sensing retrievals, and ground observations. This incl
Externí odkaz:
https://doaj.org/article/ffcfa8c829ae48dab12a92ebc4b3b40d
Autor:
P. Xian, J. Zhang, N. T. O'Neill, J. S. Reid, T. D. Toth, B. Sorenson, E. J. Hyer, J. R. Campbell, K. Ranjbar
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 9949-9967 (2022)
In a companion paper (Xian et al., 2022, part 1 of the study), we present an Arctic aerosol optical depth (AOD) climatology and trend analysis for 2003–2019 spring and summertime periods derived from a combination of aerosol reanalyses, remote-sens
Externí odkaz:
https://doaj.org/article/e61a12e988694586815b6438e4bbb6a3
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 1757-1760 (2022)
The suggestion of Huang et al. (2015) on the climatological-scale transport of Asian dust to the Arctic appears to be an important and worthwhile assertion. It is unfortunate that the authors undermined, to a certain degree, the quality of that asser
Externí odkaz:
https://doaj.org/article/e3853fb6cc854b528eea91d344a2e83e
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 6561-6599 (2021)
Starphotometry, the night-time counterpart of sunphotometry, has not yet achieved the commonly sought observational error level of 1 %: a spectral optical depth (OD) error level of 0.01. In order to address this issue, we investigate a large variety
Externí odkaz:
https://doaj.org/article/902b31e2e0644be0bd1224cbe2b7df4b
Autor:
K. Baibakov, S. LeBlanc, K. Ranjbar, N. T. O'Neill, M. Wolde, J. Redemann, K. Pistone, S.-M. Li, J. Liggio, K. Hayden, T. W. Chan, M. J. Wheeler, L. Nichman, C. Flynn, R. Johnson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 10671-10687 (2021)
In this work we report the airborne aerosol optical depth (AOD) from measurements within freshly emitted anthropogenic plumes arising from mining and processing operations in the Athabasca Oil Sands Region (AOSR) in the context of ground-based AERONE
Externí odkaz:
https://doaj.org/article/add645b039c04dc186ab6cc11a85f199
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 64 (2023)
X-ray flux and pulse period fluctuations in an accretion-powered pulsar convey important information about the disk–magnetosphere interaction. It is shown that simultaneous flux and period measurements can be analysed with a Kalman filter based on
Externí odkaz:
https://doaj.org/article/a332f07cdf5641d59af9a9417fc27fe3