Results 281 to 290 of about 383,072 (432)

The Need for Better Monitoring of Climate Change in the Middle and Upper Atmosphere

AGU Advances, Volume 6, Issue 2, April 2025.
Abstract Anthropogenic greenhouse gas emissions significantly impact the middle and upper atmosphere. They cause cooling and thermal shrinking and affect the atmospheric structure. Atmospheric contraction results in changes in key atmospheric features, such as the stratopause height or the peak ionospheric electron density, and also results in reduced ...
Juan A. Añel, Ingrid Cnossen, Juan Carlos Antuña‐Marrero, Gufran Beig, Matthew K. Brown, Eelco Doornbos, Scott Osprey, Shaylah Maria Mutschler, Celia Pérez Souto, Petr Šácha, Viktoria Sofieva, Laura de la Torre, Shun‐Rong Zhang, Martin G. Mlynczak   +13 more
wiley   +1 more source

MEASUREMENT OF RADIATION EXPOSURE OF ASTRONAUTS BY RADIOCHEMICAL TECHNIQUES. Quarterly Research Report to the NASA Manned Spacecraft Center, April 6--July 5, 1970.

, 1970
R.L. Brodzinski, W.A. Haller
openalex   +2 more sources

Initial trajectory design of low-thrust spacecraft considering attitude constraints. [PDF]

Sci Rep
Fan Z, Ke W, Qi J, Huo M, Qi N, Cheng F, Li W, Xie S.   +7 more
europepmc   +1 more source

High‐Speed Electron Flows in the Earth Magnetotail

AGU Advances, Volume 6, Issue 2, April 2025.
Abstract High‐speed electron flows (HSEFs) play a crucial role in the energy dissipation and conversion processes within the terrestrial magnetosphere and can drive various types of plasma waves and instabilities, affecting the electron‐scale dynamics.
Huijie Liu, Wenya Li, Binbin Tang, Cecilia Norgren, Kaijun Liu, Yuri V. Khotyaintsev, Daniel Graham, Tongkuai Li, Chongle Zhang, Andris Vaivads, Shan Wang, Jiansen He, Xiaocheng Guo, James L. Burch, Per‐Arne Lindqvist, Robert Ergun, Daniel Gershman, Benoit Lavraud, Christopher Russell, Quanming Lu, Chi Wang   +20 more
wiley   +1 more source

Motion and Inertia Estimation for Non-Cooperative Space Objects During Long-Term Occlusion Based on UKF-GP. [PDF]

Sensors (Basel)
Kabir RH, Bai X.
europepmc   +1 more source

In Situ Calculation of Spaceflight Magnetometer Coupling Coefficients for Interference Removal Using the Reduction Algorithm for Magnetometer Electromagnetic Noise (RAMEN)

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract Space‐based in situ magnetic field measurements are often limited by spacecraft‐generated interference, known as stray magnetic fields. These fields, generated by currents from spacecraft subsystems, are frequently several times stronger than the ambient magnetic field signals of interest.
Alex P. Hoffmann, Mark B. Moldwin
wiley   +1 more source

THE MEASUREMENT OF RADIATION EXPOSURE OF ASTRONAUTS BY RADIOCHEMICAL TECHNIQUES. Quarterly Research Report to the NASA Manned Spacecraft Center, October 5, 1970--January 3, 1971.

, 1971
R.L. Brodzinski
openalex   +2 more sources

The Europa Imaging System (EIS) Investigation. [PDF]

Space Sci Rev
Turtle EP, McEwen AS, Patterson GW, Ernst CM, Elder CM, Slack KA, Hawkins SE, McDermott J, Meyer H, DeMajistre R, Espiritu R, Seifert H, Niewola J, Bland M, Becker M, Centurelli J, Collins GC, Corlies P, Darlington H, Daubar IJ, Derr C, Detelich C, Donald E, Edens W, Fletcher L, Gardner C, Graham F, Hansen CJ, Haslebacher C, Hayes AG, Humm D, Hurford TA, Kirk RL, Kutsop N, Lees WJ, Lewis D, London S, Magner A, Mills M, Barr Mlinar AC, Morgan F, Nimmo F, Ocasio Milanes A, Osterman S, Phillips CB, Pommerol A, Prockter L, Quick LC, Robbins G, Soderblom JM, Stewart B, Stickle A, Sutton SS, Thomas N, Torres I, Tucker OJ, Van Auken RB, Wilk KA.   +57 more
europepmc   +1 more source

Automatic Identification of Past Radiation Belts Electron Enhancement Events Using a Ground‐Based Parameter

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract We propose a new method for automatically identifying radiation belt electron enhancement events using Ca, a ground‐based 1D surrogate index for the global dynamics of the electron radiation belts. Our method improves event identification by accurately determining start and end dates, considering intensification and return‐to‐equilibrium ...
Guillerme Bernoux, Gautier Nguyen, Angélica Sicard, Vincent Maget   +3 more
wiley   +1 more source

MEASUREMENT OF RADIATION EXPOSURE OF ASTRONAUTS BY RADIOCHEMICAL TECHNIQUES. Quarterly Research Report to the NASA Manned Spacecraft Center, April 3--July 2, 1972.

, 1972
R.L. Brodzinski
openalex   +1 more source