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Akademický článek

In situ and satellite-based estimates of cloud properties and aerosol–cloud interactions over the southeast Atlantic Ocean

Autor: S. Gupta, G. M. McFarquhar, J. R. O'Brien, M. R. Poellot, D. J. Delene, I. Chang, L. Gao, F. Xu, J. Redemann

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 12923-12943 (2022)

In situ cloud probe data from the NASA ObseRvations of Aerosols above CLouds and their intEractionS (ORACLES) field campaign were used to estimate the effective radius (Re), cloud optical thickness (τ), and cloud droplet concentration (Nc) for marin

Externí odkaz: https://doaj.org/article/124b75d8e19741e3ad432ff45f4bffc9

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Akademický článek

Factors affecting precipitation formation and precipitation susceptibility of marine stratocumulus with variable above- and below-cloud aerosol concentrations over the Southeast Atlantic

Autor: S. Gupta, G. M. McFarquhar, J. R. O'Brien, M. R. Poellot, D. J. Delene, R. M. Miller, J. D. Small Griswold

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 2769-2793 (2022)

Aerosol–cloud–precipitation interactions (ACIs) provide the greatest source of uncertainties in predicting changes in Earth's energy budget due to poor representation of marine stratocumulus and the associated ACIs in climate models. Using in sit

Externí odkaz: https://doaj.org/article/99a16db3f2f0467fa37973c32725e5ba

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Akademický článek

Observations of supermicron-sized aerosols originating from biomass burning in southern Central Africa

Autor: R. M. Miller, G. M. McFarquhar, R. M. Rauber, J. R. O'Brien, S. Gupta, M. Segal-Rozenhaimer, A. N. Dobracki, A. J. Sedlacek, S. P. Burton, S. G. Howell, S. Freitag, C. Dang

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 14815-14831 (2021)

During the 3 years of the ObseRvations of Aerosols above CLouds and their intEractionS (ORACLES) campaign, the NASA Orion P-3 was equipped with a 2D stereo (2D-S) probe that imaged particles with maximum dimension (D) ranging from 10 < D < 1280 µm.

Externí odkaz: https://doaj.org/article/5f307640dc2648daa35f764c8b6269be

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Akademický článek

Joint cloud water path and rainwater path retrievals from airborne ORACLES observations

Autor: A. M. Dzambo, T. L'Ecuyer, K. Sinclair, B. van Diedenhoven, S. Gupta, G. McFarquhar, J. R. O'Brien, B. Cairns, A. P. Wasilewski, M. Alexandrov

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 5513-5532 (2021)

This study presents a new algorithm that combines W-band reflectivity measurements from the Airborne Precipitation Radar – third generation (APR-3) passive radiometric cloud optical depth and effective radius retrievals from the Research Scanning P

Externí odkaz: https://doaj.org/article/bec5bc69796d4ef89a97e3111f5c7a45

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Akademický článek

Impact of the variability in vertical separation between biomass burning aerosols and marine stratocumulus on cloud microphysical properties over the Southeast Atlantic

Autor: S. Gupta, G. M. McFarquhar, J. R. O'Brien, D. J. Delene, M. R. Poellot, A. Dobracki, J. R. Podolske, J. Redemann, S. E. LeBlanc, M. Segal-Rozenhaimer, K. Pistone

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 4615-4635 (2021)

Marine stratocumulus cloud properties over the Southeast Atlantic Ocean are impacted by contact between above-cloud biomass burning aerosols and cloud tops. Different vertical separations (0 to 2000 m) between the aerosol layer and cloud tops were ob

Externí odkaz: https://doaj.org/article/c9f03028ee0b492e9507b6851a8234a5

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Akademický článek

An overview of the ORACLES (ObseRvations of Aerosols above CLouds and their intEractionS) project: aerosol–cloud–radiation interactions in the southeast Atlantic basin

Autor: J. Redemann, R. Wood, P. Zuidema, S. J. Doherty, B. Luna, S. E. LeBlanc, M. S. Diamond, Y. Shinozuka, I. Y. Chang, R. Ueyama, L. Pfister, J.-M. Ryoo, A. N. Dobracki, A. M. da Silva, K. M. Longo, M. S. Kacenelenbogen, C. J. Flynn, K. Pistone, N. M. Knox, S. J. Piketh, J. M. Haywood, P. Formenti, M. Mallet, P. Stier, A. S. Ackerman, S. E. Bauer, A. M. Fridlind, G. R. Carmichael, P. E. Saide, G. A. Ferrada, S. G. Howell, S. Freitag, B. Cairns, B. N. Holben, K. D. Knobelspiesse, S. Tanelli, T. S. L'Ecuyer, A. M. Dzambo, O. O. Sy, G. M. McFarquhar, M. R. Poellot, S. Gupta, J. R. O'Brien, A. Nenes, M. Kacarab, J. P. S. Wong, J. D. Small-Griswold, K. L. Thornhill, D. Noone, J. R. Podolske, K. S. Schmidt, P. Pilewskie, H. Chen, S. P. Cochrane, A. J. Sedlacek, T. J. Lang, E. Stith, M. Segal-Rozenhaimer, R. A. Ferrare, S. P. Burton, C. A. Hostetler, D. J. Diner, F. C. Seidel, S. E. Platnick, J. S. Myers, K. G. Meyer, D. A. Spangenberg, H. Maring, L. Gao

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 1507-1563 (2021)

Southern Africa produces almost a third of the Earth's biomass burning (BB) aerosol particles, yet the fate of these particles and their influence on regional and global climate is poorly understood. ORACLES (ObseRvations of Aerosols above CLouds and

Externí odkaz: https://doaj.org/article/9a64d469bbfb4673930c0963016ac3b0

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Akademický článek

Biomass burning aerosol as a modulator of the droplet number in the southeast Atlantic region

Autor: M. Kacarab, K. L. Thornhill, A. Dobracki, S. G. Howell, J. R. O'Brien, S. Freitag, M. R. Poellot, R. Wood, P. Zuidema, J. Redemann, A. Nenes

Publikováno v: Atmospheric Chemistry and Physics, Vol 20, Pp 3029-3040 (2020)

The southeastern Atlantic (SEA) and its associated cloud deck, off the west coast of central Africa, is an area where aerosol–cloud interactions can have a strong radiative impact. Seasonally, extensive biomass burning (BB) aerosol plumes from sout

Externí odkaz: https://doaj.org/article/97ed13e429bb49409a16741b988a50d8

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Non stoichiometry and lattice expansion of BaZr0.9Dy0.1O3-δ in oxidizing atmospheres

Autor: Nicola H. Perry, G. Hudish, J. R. O'Brien, Sandrine Ricote

Publikováno v: Solid State Ionics. 330:33-39

The changes in lattice parameter and oxygen non-stoichiometry in BaZr0.9Dy0.1O3-δ (BZDy10) were studied by high temperature X-ray diffraction (HT-XRD) and thermogravimetric analysis (TGA) as a function of temperature at three oxygen partial pressure

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::351ce411c2017a28eddcd88a5251c56d
https://doi.org/10.1016/j.ssi.2018.12.006

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Platelet tests in the prediction of myocardial infarction and ischaemic stroke: evidence from the Caerphilly Prospective Study

Autor: Andrew D Beswick, R. J. Flower, Janet Elizabeth Pickering, Peter McCarron, J. R. O'Brien, Peter Creighton Elwood, S. R. Renaud

Publikováno v: British Journal of Haematology. 113:514-520

A platelet test that is predictive of myocardial infarction (MI) and/or stroke would enable the targeting of anti-platelet drugs towards high-risk patients. The predictive power of several platelet tests for MI and for stroke was examined in 2000 old

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52c3ea0203a8f8f955c42d7f2a3ed2b1
https://doi.org/10.1046/j.1365-2141.2001.02728.x

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Anti-glycoprotein Ib causes platelet aggregation

Autor: M. D. Etherington, J. R. O'brien

Publikováno v: Blood Coagulation & Fibrinolysis. 9:453-462

In 1987 we reported that when blood was forced through a fine filter under pressure in the filterometer the platelets aggregated and blocked the filter. von Willebrand factor (vWF) and glycoprotein (Gp) IIb/IIIa and calcium were involved. Results wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::870bdadac6cb1a079d01e6d39a121c80
https://doi.org/10.1097/00001721-199809000-00001

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