Results 101 to 110 of about 24,137 (262)

Impacts of the May 2024 Extreme Geomagnetic Storm on Global High‐Accuracy GPS Positioning Solutions

Space Weather, Volume 23, Issue 10, October 2025.
Abstract The May 2024 geomagnetic storm has been recognized as the most severe one in the past two decades and was categorized as an “extreme” (G5) event according to the NOAA space weather scales. This study applies Precise Point Positioning (PPP) software PRIDE PPP‐AR to over 5,800 worldwide GNSS receiver data to highlight the vulnerability of high ...
Zhe Yang, Y. T. Jade Morton
wiley   +1 more source

Nocturnal Temperature and Wind Structures of the Mesosphere and Lower Thermosphere Region Over Yuzhong (36°N, 104.2°E) Based on Sodium Lidar Observation

Space Weather, Volume 23, Issue 10, October 2025.
Abstract We present an analysis of thermal and dynamical structures in the mesopause and lower thermosphere (MLT) region (82–106 km) using ∼1,870 hr of sodium (Na) lidar observations at Yuzhong (36.0°N, 104.2°E) from March 2023 to May 2025. Mesopause altitudes exhibit strong seasonal dependence, ranging from 88 km in summer to 102 km in winter, with ...
Linmei Liu, Yuan Xia, Yong Yang, Xuewu Cheng, Xin Lin, Kaijie Ji, Wei Wang, Jiaming Liang, Jinzhou Zheng, Guotao Yang, Faquan Li   +10 more
wiley   +1 more source

On the importance of middle-atmosphere observations on ionospheric dynamics using WACCM-X and SAMI3 [PDF]

Annales Geophysicae
Recent advances in atmospheric observations and modeling have enabled the investigation of thermosphere–ionosphere interactions as a whole-atmosphere problem.
F. Sassi, F. Sassi, A. G. Burrell, S. E. McDonald, J. L. Tate, J. P. McCormack, J. P. McCormack   +6 more
doaj   +1 more source

Gravity waves and high-altitude CO$_2$ ice cloud formation in the Martian atmosphere

, 2015
We present the first general circulation model simulations that quantify and reproduce patches of extremely cold air required for CO$_2$ condensation and cloud formation in the Martian mesosphere.
Hartogh, Paul, Medvedev, Alexander S., Yiğit, Erdal   +2 more
core   +1 more source

Century‐scale effect of climate change on meteorite falls

Meteoritics &Planetary Science, Volume 60, Issue 10, Page 2458-2468, October 2025.
Abstract Climate change is inducing a global atmospheric contraction above the tropopause (~10 km), leading to systematic decrease in neutral air density. The impact of climate change on small meteoroids has already been observed over the last two decades, with documented shifts in their ablation altitudes in the mesosphere (~50–85 km) and lower ...
Eloy Peña‐Asensio, Denis Vida, Ingrid Cnossen, Esteban Ferrer   +3 more
wiley   +1 more source

The DTM-2013 thermosphere model [PDF]

Journal of Space Weather and Space Climate, 2015
Aims – The Drag Temperature Model (DTM) is a semi-empirical model describing the temperature, density, and composition of the Earth’s thermosphere. DTM2013 was developed in the framework of the Advanced Thermosphere Modelling and Orbit Prediction project (ATMOP).
openaire   +5 more sources

Equatorward Wind Driven Significant Upwelling of Ca+ Layer Over Middle Latitude During the November 2023 Strong Geomagnetic Storm

Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.
Abstract Metallic ions deposited in the Earth's atmosphere by meteoric ablation primarily occur below 105 km altitude, and sometimes could ascend to the F region altitude ∼200 km under geomagnetic quiet conditions. With the Mohe (122.3°E, 53.5°N, magnetic latitude 54.8°) lidar, we present the first observation of Ca+ layer upwelling from E to F region ...
Jing Jiao, Wenjie Sun, Lifang Du, Guotao Yang, Guozhu Li, Biqiang Zhao, Fang Wu, Wenbo Li, Haoran Zheng, Yuchang Xun, Xiaofei Wu, Chunxiao Yan, Yajun Zhu   +12 more
wiley   +1 more source

Infrared Radiation in the Thermosphere From 2002 to 2023

Geophysical Research Letters
Twenty‐two years (2002–2023) of infrared radiative cooling rate data derived from the SABER instrument on the NASA TIMED satellite are presented. Global daily and global annual infrared power (Watts, W) emitted by nitric oxide (NO) and carbon dioxide ...
Martin G. Mlynczak, Linda Hunt, Nabil Nowak, B. Thomas Marshall, Christopher J. Mertens   +4 more
doaj   +1 more source

Observed Ionospheric Tidal Response to the Madden‐Julian Oscillation

Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.
Abstract The Madden‐Julian Oscillation (MJO) is the dominant mode of intraseasonal variability in the tropical troposphere and known to affect the tidal activity in the mesosphere and lower thermosphere (MLT). Using Constellation Observing System for Meteorology, Ionosphere, and Climate‐2 (COSMIC‐2) Global Ionospheric Specification electron density ...
Deepali Aggarwal, Jens Oberheide, Komal Kumari   +2 more
wiley   +1 more source

Hydrogen diffusion in the thermosphere by Monte Carlo method [PDF]

, 1964
S. O. Kastner
openalex   +1 more source