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Zonal Wave Number Diagnosis of Rossby Wave-Like Oscillations Using Paired Ground-Based Radars 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (12)
作者:  He, Maosheng;  Yamazaki, Yosuke;  Hoffmann, Peter;  Hall, Chris M.;  Tsutsumi, Masaki;  Li, Guozhu;  Chau, Jorge Luis
收藏  |  浏览/下载:9/0  |  提交时间:2020/08/18
Rossby wave  planetary wave  stratospheric sudden warming (SSW)  mesosphere  nonlinear interaction  wave number  
Aircraft observed diurnal variations of the planetary boundary layer under heat waves 期刊论文
ATMOSPHERIC RESEARCH, 2020, 235
作者:  Zhang, Yuanjie;  Wang, Liang;  Santanello, Joseph A.;  Pan, Zaitao;  Gao, Zhiqiu;  Li, Dan
收藏  |  浏览/下载:10/0  |  提交时间:2020/07/02
Planetary boundary layer  Heat wave  AMDAR  WVSS  Atmospheric circulation  
Observation of Bose-Einstein condensates in an Earth-orbiting research lab 期刊论文
NATURE, 2020, 582 (7811) : 103-+
作者:  Yamamoto, Keisuke;  Venida, Anthony;  Yano, Julian;  Biancur, Douglas E.;  Kakiuchi, Miwako;  Gupta, Suprit;  Sohn, Albert S. W.;  Mukhopadhyay, Subhadip;  Lin, Elaine Y.;  Parker, Seth J.;  Banh, Robert S.;  Paulo, Joao A.;  Wen, Kwun Wah;  Debnath, Jayanta;  Kim, Grace E.;  Mancias, Joseph D.;  Fearon, Douglas T.;  Perera, Rushika M.;  Kimmelman, Alec C.
收藏  |  浏览/下载:25/0  |  提交时间:2020/07/03

Quantum mechanics governs the microscopic world, where low mass and momentum reveal a natural wave-particle duality. Magnifying quantum behaviour to macroscopic scales is a major strength of the technique of cooling and trapping atomic gases, in which low momentum is engineered through extremely low temperatures. Advances in this field have achieved such precise control over atomic systems that gravity, often negligible when considering individual atoms, has emerged as a substantial obstacle. In particular, although weaker trapping fields would allow access to lower temperatures(1,2), gravity empties atom traps that are too weak. Additionally, inertial sensors based on cold atoms could reach better sensitivities if the free-fall time of the atoms after release from the trap could be made longer(3). Planetary orbit, specifically the condition of perpetual free-fall, offers to lift cold-atom studies beyond such terrestrial limitations. Here we report production of rubidium Bose-Einstein condensates (BECs) in an Earth-orbiting research laboratory, the Cold Atom Lab. We observe subnanokelvin BECs in weak trapping potentials with free-expansion times extending beyond one second, providing an initial demonstration of the advantages offered by a microgravity environment for cold-atom experiments and verifying the successful operation of this facility. With routine BEC production, continuing operations will support long-term investigations of trap topologies unique to microgravity(4,5), atom-laser sources(6), few-body physics(7,8)and pathfinding techniques for atom-wave interferometry(9-12).


  
Interannual Variation of Upper Stratospheric Ozone in the Northern Midlatitudes in Early Winter Caused by Planetary Waves 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2019, 124 (24) : 14347-14361
作者:  Ohyama, H.;  Sugita, T.;  Akiyoshi, H.;  Nagahama, T.;  Mizuno, A.
收藏  |  浏览/下载:7/0  |  提交时间:2020/02/17
upper stratospheric ozone  planetary waves  millimeter-wave radiometer  
Blocking Statistics in a Varying Climate: Lessons from a "Traffic Jam" Model with Pseudostochastic Forcing 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2019, 76 (10) : 3013-3027
作者:  Paradise, Adiv;  Rocha, Cesar B.;  Barpanda, Pragallva;  Nakamura, Noboru
收藏  |  浏览/下载:10/0  |  提交时间:2019/11/27
Blocking  Nonlinear dynamics  Planetary waves  Potential vorticity  Wave breaking  Climate variability  
Planetary and synoptic-scale dynamic control of extreme cold wave patterns over the United States 期刊论文
CLIMATE DYNAMICS, 2019, 53: 1477-1495
作者:  Xie, Zuowei;  Black, Robert X.;  Deng, Yi
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/27
Extreme cold wave  Large-scale meteorological pattern  Planetary wave  Barotropic deformation  Piecewise tendency diagnosis  
Structure, Variability, and Mean-Flow Interactions of the January 2015 Quasi-2-Day Wave at Middle and High Southern Latitudes 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2019, 124 (12) : 5981-6008
作者:  Fritts, David C.;  Iimura, Hiroyuki;  Janches, Diego;  Lieberman, Ruth S.;  Riggin, Dennis M.;  Mitchell, Nicholas J.;  Vincent, Robert A.;  Reid, Iain M.;  Murphy, Damian J.;  Tsutsumi, Masaki;  Kavanagh, Andrew J.;  Batista, Paulo P.;  Hocking, Wayne K.
收藏  |  浏览/下载:9/0  |  提交时间:2019/11/26
quasi-2-day wave  quasi-2-day wave transience  planetary-wave  mean-flow interactions  planetary-wave Eliassen-Palm fluxes  
Precursory signals of East Asian winter cold anomalies in stratospheric planetary wave pattern 期刊论文
CLIMATE DYNAMICS, 2019, 52: 5965-5983
作者:  Song, Lei;  Wu, Renguang
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/26
East Asian cold anomalies  Precursory signals  Stratospheric planetary wave pattern  Downward propagation  
On the low-frequency variability of wintertime Euro-Atlantic planetary wave-breaking 期刊论文
CLIMATE DYNAMICS, 2019, 52: 2431-2450
作者:  Messori, Gabriele;  Davini, Paolo;  Alvarez-Castro, M. Carmen;  Pausata, Francesco S. R.;  Yiou, Pascal;  Caballero, Rodrigo
收藏  |  浏览/下载:12/0  |  提交时间:2019/04/09
Planetary wave-breaking  Low-frequency variability  Windstorms  Millennium  North Atlantic  NAO  
On the Upward Extension of the Polar Vortices Into the Mesosphere 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2018, 123 (17) : 9171-9191
作者:  Harvey, V. Lynn;  Randall, Cora E.;  Goncharenko, Larisa;  Becker, Erich;  France, Jeff
收藏  |  浏览/下载:5/0  |  提交时间:2019/04/09
polar vortex  mesosphere  stratosphere  dynamics  planetary wave  atmospheric coupling