Results 41 to 50 of about 474,530 (188)

Experimental investigation of the equatorial ionospheric anomaly in Africa in the period of solar minimum [PDF]

, 1967
Equatorial ionization anomaly of F layer in Africa during period of solar ...
Vila, P.
core  

The Temporal Evolution of F-Region Equatorial Ionization Anomaly Owing to the 2022 Tonga Volcanic Eruption

, 2022
The dynamic evolutions of the noon ionospheric Equatorial Ionization Anomaly (EIA) owing to the 2022 Tonga volcanic eruption were investigated using the ionospheric plasma measurements from the Swarm satellite, the science experiment of the Constellation
Hui Wang, Chengyu Qian, Hao Xia, Yunfang Zhong, Kedeng Zhang   +4 more
core   +1 more source

Quiet Time Ionosphere‐Thermosphere Predictability During Sudden Stratospheric Warmings in TIE‐GCM

Space Weather, Volume 24, Issue 11, November 2026.
Abstract We investigate the predictability of the ionosphere‐thermosphere (IT) region during sudden stratospheric warmings (SSWs) by using subseasonal hindcasts in the Community Earth System Model, version 2 with the Whole Atmosphere Community Climate Model (CESM2 [WACCM6]) to force the lower boundary of the TIE‐GCM.
B. C. Martinez, N. M. Pedatella, Xian Lu
wiley   +1 more source

Characterizations of the diurnal shapes of OI 630.0 nm dayglow intensity variations: inferences [PDF]

Annales Geophysicae, 2002
Measurements of OI 630.0 nm thermospheric dayglow emission by means of the Dayglow Photometer (DGP) at Mt. Abu (24.6° N, 73.7° E, dip lat 19.09° N), a station under the crest of Equatorial Ionization Anomaly (EIA), reveal day-to-day changes in the ...
D. Chakrabarty, D. Chakrabarty, R. Sekar, H. Chandra, R. Narayanan, B. M. Pathan, K. S. V. Subbarao   +6 more
doaj   +1 more source

Impact of Realistic Detector Response and Azimuthal Drift on the Quantification of Energetic Electron Precipitation Using POES/MetOp

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Quantifying energetic electron precipitation is essential for understanding ring current and radiation belt loss, as well as magnetosphere‐ionosphere‐atmosphere coupling. The count rate ratio between the 90° and 0° telescopes (CR90/CR0) on POES/MetOp satellites is a commonly used proxy for precipitation and pitch‐angle diffusion rates (DW ${D ...
Weichao Tu, Zhi‐Gu Li
wiley   +1 more source

Measuring Equatorial Ionospheric Scintillation over EIA Using L-Band SAR: A Case Study

Space: Science & Technology
The scintillation amplitude stripes have been frequently observed in numerous equatorial nighttime acquisitions of the Advanced Land Observing Satellite Phased Array-type L-band Synthetic Aperture Radar (PALSAR).
Feixiang Tang, Yifei Ji, Yongsheng Zhang, Zhen Dong, Zirui Chen, Yixun Zhu   +5 more
doaj   +1 more source

LC‐HRMS Profiling and Physicochemical Characterization of Strawberries From Agroclimatic Region in Java, Indonesia

Chemistry &Biodiversity, Volume 23, Issue 10, October 2026.
Agroclimatic variation may influence strawberry sugar, acidity, and antioxidant levels. Cooler and wetter climates are associated with enhanced accumulation of bioactive compounds in strawberries. LC‐HRMS analysis reveals region‐specific metabolite fingerprints, highlighting the molecular diversity shaped by environmental conditions.
Soraya Habibi, Einstivina Nuryandani, Nanik Suhartatik, Fadilah Husnun, Akhmad Mustofa, Nurika Yepi Prasetyaningtyas, Titiek Farianti Djaafar, Tri Marwati, Anna Fajariyah, Ulyatu Fitrotin   +9 more
wiley   +1 more source

Electrodynamical response of the Indian low-mid latitude ionosphere to the very large solar flare of 28 October 2003 – a case study [PDF]

Annales Geophysicae, 2009
The electrodynamic effects on the low-mid latitude ionospheric region have been investigated using GPS (global positioning system) data, ionosonde data and ΔH values, during the very large solar flare (X17.2/4B) of 28 October 2003.
G. Manju, T. K. Pant, C. V. Devasia, S. Ravindran, R. Sridharan   +4 more
doaj   +1 more source

Dynamic Evolution of a Storm‐Time “Super‐EPB” Event Over China on the Magnetically Disturbed Night of 01 December 2023

Space Weather, Volume 24, Issue 10, October 2026.
Abstract This paper investigates the dynamic evolution of a storm‐time “Super‐EPB” event over China on 1 December 2023 (Kp ≤ 7, SYM/H ≥ −130 nT) using multi‐instrument observations. Occurring near sunset as the IMF‐Bz abruptly turned southward, with auroral extension to midlatitudes, the “Super‐EPB” extended to 40°N with an apex height of ∼2,460 km ...
Longchang Sun, Jiyao Xu, Wei Yuan, Yajun Zhu, Maosheng He, Wenjie Sun, Guozhu Li, Jiaojiao Zhang, Hong Gao, Aibin Zhang, Weijun Liu, Guojun Wang   +11 more
wiley   +1 more source

Effects of Electric Field and Neutral Wind on the Asymmetry of Equatorial Ionization Anomaly [PDF]

Radio Science, 2018
AbstractThe zonal electric field and the meridional neutral wind are the principal drivers that define the geometry and characteristics of the equatorial ionization anomaly (EIA). Here we present the response of the EIA to the variability of the zonal electric field based on measurements of the equatorial electrojet (EEJ) currents and trans‐equatorial ...
Sovit M. Khadka, Cesar E. Valladares, Robert Sheehan, Andrew J. Gerrard   +3 more
openaire   +1 more source