Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Christopher Geach"'
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-7 (2022)
Metastable helium is a promising target for remote-sensing observations of Earth’s thermosphere. This paper reports on the development of a resonance lidar capable of resolving metastable helium density profiles and presents initial results
Externí odkaz:
https://doaj.org/article/e5921503e10046539d7e174fb6dd97e1
Autor:
Carl Bjorn Kjellstrand, Glenn Jones, Christopher Geach, Bifford P. Williams, David C. Fritts, Amber Miller, Shaul Hanany, Michele Limon, Jason Reimuller
Publikováno v:
Earth and Space Science, Vol 7, Iss 8, Pp n/a-n/a (2020)
Abstract The Polar Mesospheric Cloud Turbulence (PMC Turbo) instrument consists of a balloon‐borne platform which hosts seven cameras and a Rayleigh lidar. During a 6‐day flight in July 2018, the cameras captured images of Polar Mesospheric Cloud
Externí odkaz:
https://doaj.org/article/0a4fb7354fd44e62a228651342849883
Autor:
C. Bjorn Kjellstrand, David C. Fritts, Amber D. Miller, Bifford P. Williams, Natalie Kaifler, Christopher Geach, Shaul Hanany, Bernd Kaifler, Glenn Jones, Michele Limon, Jason Reimuller, Ling Wang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a6162c4d80db156335490429e563043
https://elib.dlr.de/188376/
https://elib.dlr.de/188376/
Autor:
Michele Limon, Bernd Kaifler, David C. Fritts, Yucheng Zhao, Jason Reimuller, Amber Miller, Natalie Kaifler, Ling Wang, Markus Rapp, Cora E. Randall, Shaul Hanany, Christopher Geach, C. Bjorn Kjellstrand, Gunter Stober, Sonja Gisinger, Glenn Jones, Bifford P. Williams
Publikováno v:
All Physics Faculty Publications
The Polar Mesospheric Cloud Turbulence (PMC Turbo) experiment was designed to observe and quantify the dynamics of small‐scale gravity waves (GWs) and instabilities leading to turbulence in the upper mesosphere during polar summer using instruments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::683325425db10c8d210e9f5a96599741
https://doi.org/10.1029/2019jd030298
https://doi.org/10.1029/2019jd030298
The Columbia Scientific Ballooning Facility operates stratospheric balloon flights out of McMurdo Station in Antarctica. We use balloon trajectory data from 40 flights between 1991 and 2016 to give the first quantification of trajectory statistics. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be66a0e890be5c0b1311932ae632165f
Autor:
C. B. Kjellstrand, Natalie Kaifler, Bifford P. Williams, D. C. Fritts, Bernd Kaifler, Jason Reimuller, Christopher Geach, Shaul Hanany, Amber Miller, Stephen D. Eckermann, Glenn Jones
Publikováno v:
Journal of Geophysical Research: Atmospheres. 125
Polar mesospheric cloud (PMC) imaging and lidar profiling performed aboard the 5.9 day PMC Turbo balloon flight from Sweden to northern Canada in July 2018 revealed a wide variety of gravity wave (GW) and instability events occurring nearly continuou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95276f5e3febb74f596723b9ce81d8e9
https://doi.org/10.1029/2020jd033038
https://doi.org/10.1029/2020jd033038
Autor:
X. Zhou, Alexander Berk, Christopher Geach, Dirk Lummerzheim, Don L. Hampton, Y.-T. He, S. B. Rafol, Robert Michell
Publikováno v:
Journal of Geophysical Research: Space Physics. 125
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8b1688784cd3f0cf0a4d7c3b441aad7
https://doi.org/10.1029/2019ja027603
https://doi.org/10.1029/2019ja027603
Autor:
Jason Reimuller, David C. Fritts, Christopher Geach, C. B. Kjellstrand, Amber Miller, Michele Limon, Glenn A. Jones, Shaul Hanany, Bifford P. Williams
Publikováno v:
Earth and Space Science, Vol 7, Iss 8, Pp n/a-n/a (2020)
Earth and space science (Hoboken, N.J.)
Earth and space science (Hoboken, N.J.)
The Polar Mesospheric Cloud Turbulence (PMC Turbo) instrument consists of a balloon‐borne platform which hosts seven cameras and a Rayleigh lidar. During a 6‐day flight in July 2018, the cameras captured images of Polar Mesospheric Clouds (PMCs)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16c4e77208420191864a28b4fa97cd2d
https://doaj.org/article/0a4fb7354fd44e62a228651342849883
https://doaj.org/article/0a4fb7354fd44e62a228651342849883
Autor:
Chaoyun Bao, Kate Raach, Ilan Sagiv, François Aubin, Shaul Hanany, Christopher Geach, Adrian T. Lee, Kevin MacDermid, Johannes Hubmayr, Britt Reichborn-Kjennerud, Daniel Chapman, Asad M. Aboobaker, Jeff Klein, Enzo Pascale, Bradley R. Johnson, Derek Araujo, Andrei Korotkov, Michele Limon, William F. Grainger, Michael Milligan, Gregory S. Tucker, Benjamin Westbrook, Carole Tucker, Amber Miller, Kyle Helson, Andrew H. Jaffe, Terry Jay Jones, Peter A. R. Ade, Carlo Baccigalupi, Kyle Zilic, Seth Hillbrand, Joy Didier, Matt Dobbs, Karl Young
We discuss a systematic effect associated with measuring polarization with a continuously rotating half-wave plate. The effect was identified with the data from the E and B Experiment (EBEX), which was a balloon-borne instrument designed to measure t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae4e38c3c6ab65a62d55bfc237c2356a
http://arxiv.org/abs/1711.01314
http://arxiv.org/abs/1711.01314
Autor:
Michael Milligan, Asad M. Aboobaker, Ilan Sagiv, Shaul Hanany, François Aubin, Kyle Zilic, Norman Jarosik, Christopher Geach
We present a vacuum window mechanism that is useful for applications requiring two different vacuum windows in series, with one of them movable and resealable. Such applications include space borne instruments that can benefit from a thin vacuum wind
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67824fdcc3d02a8d33e1770ac4b6fbe7
http://arxiv.org/abs/1702.01861
http://arxiv.org/abs/1702.01861