Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Joshua Pettit"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract During large geomagnetic storms, red auroras are typically observed from low-latitude countries such as Japan. The color arises from a specific emission line of oxygen atoms at high altitudes. However, during the May 10-11th 2024 superstorm,
Externí odkaz:
https://doaj.org/article/aa6435b9eab84dbf90301c8c46634fb8
Autor:
Luisa Capannolo, Andrew Staff, Wen Li, Katharine Duderstadt, Nithin Sivadas, Joshua Pettit, Sadie Elliot, Murong Qin, Xiao-Chen Shen, Qianli Ma
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
We analyze the properties of relativistic (>700 keV) electron precipitation (REP) events measured by the low-Earth-orbit (LEO) POES/MetOp constellation of spacecraft from 2012 through 2023. Leveraging the different profiles of REP observed at LEO, we
Externí odkaz:
https://doaj.org/article/c8eb13b0649e4abea8fcc4afc8597e08
Autor:
Joshua Pettit, Sadie Elliott, Cora Randall, Alexa Halford, Allison Jaynes, Katherine Garcia-Sage
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
The drivers and atmospheric impacts of energetic electron precipitation are not yet well understood. Further, electron precipitation is often poorly represented in atmospheric modeling. Additional investigations of the drivers and impacts of electron
Externí odkaz:
https://doaj.org/article/9577426734cc48dbb93bc6436f31ff61
Autor:
Elliott, Sadie, Breneman, Aaron, Colpitts, Chris, Joshua, Pettit, Cattell, Cynthia, Halford, Alexa, Shumko, Mykhaylo, Sample, John, Johnson, Arlo, Miyoshi, Yoshi, Kasahara, Yoshi, Cully, Christopher, Nakamura, Satoko, Mitani, Takefumi, Hori, Tomo, Shinohara, Iku, Shiokawa, Kazuo, Matsuda, Shoya, Connors, Martin, Ozaki, Mitsunori, Manninen, Jyrki
Publikováno v:
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Microbursts are impulsive injections of energetic (few keV to MeV) electrons into the atmosphere, primarily caused by nonlinear scattering by whistler mode chorus waves. While the relative importance of microburst precipitation as a loss process has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f85c645d9d522cdba4a4168514b1b10
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016519
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016519
Autor:
Mark A. Clilverd, Thomas Reddmann, Eugene Rozanov, Olesya Yakovchuk, Bernd Funke, Christine Smith-Johnsen, Pekka T. Verronen, Cora E. Randall, Hilde Nesse Tyssøy, Joshua Pettit, Max van de Kamp, J. M. Wissing, Timofei Sukhodolov, Timo Asikainen, Craig J. Rodger, Miriam Sinnhuber, Stefan Bender
Precipitating auroral and radiation belt electrons are considered an important part of the natural forcing of the climate system. Recent studies suggest that this forcing is underestimated in current chemistry-climate models. The HEPPA III intercompa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9166dcd6c968ada89a35188ca0408477
https://doi.org/10.5194/egusphere-egu21-5287
https://doi.org/10.5194/egusphere-egu21-5287
Autor:
Hilde Nesse Tyssøy, Miriam Sinnhuber, Timo Asikainen, Max van de Kamp, Joshua Pettit, Cora Randall, Christine Smith-Johnsen, Pekka T. Verronen, Jan Maik Wissing, Olesya Yakovchuk
Quantifying the ionization rates due to medium energy electron (MEE) precipitation into the mesosphere has long been an outstanding question. It is the key to understand the total effect of particle precipitation on the atmosphere. The first MEE ioni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a35ba20c2e945ad04c178b02c7c2a3f
https://doi.org/10.5194/egusphere-egu2020-10731
https://doi.org/10.5194/egusphere-egu2020-10731
Autor:
Joshua Pettit, Daniel R. Marsh, Cora E. Randall, Craig J. Rodger, M. van de Kamp, Bernd Funke, Xiaohua Fang, E. D. Peck, V. L. Harvey
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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The atmospheric effects of precipitating electrons are not fully understood, and uncertainties are large for electrons with energies greater than ~30 keV. These electrons are underrepresented in modeling studies today, primarily because valid measure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2422cc338278810d6df5c23f8709e78
https://eprints.whiterose.ac.uk/152723/8/Pettit_et_al-2019-Journal_of_Geophysical_Research__Space_Physics.pdf
https://eprints.whiterose.ac.uk/152723/8/Pettit_et_al-2019-Journal_of_Geophysical_Research__Space_Physics.pdf
Autor:
Thomas C. Peterson, Joshua Pettit, Arthur T. DeGaetano, Johnathan P. Kirk, Tiffany N. Means, Xuebin Zhang, Mathias J. Collins, M. Sam McCown
Publikováno v:
Physical Geography. 35:195-219
New England and Atlantic Canada are characterized by mixed flood regimes that reflect different storm types, antecedent land surface conditions, and flood seasonality. Mixed flood regimes are known to complicate flood risk analyses, yet the synoptic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fdf15f41d4b44a91d90a3cba9de9694
https://doi.org/10.1080/02723646.2014.888510
https://doi.org/10.1080/02723646.2014.888510