Upper_Atmosphere: Recent submissions

Now showing items 101-120 of 941

How open data and interdisciplinary collaboration improve our understanding of space weather: A risk and resiliency perspective

Ledvina, Vincent E.; Palmerio, Erika; McGranaghan, Ryan M.; Halford, Alexa J.; Thayer, Aidan; Brandt, Laura; MacDonald, Elizabeth A.; Bhaskar, Ankush; Dong, Chuanfei; Altintas, Ilkay; Colliander, James; Jin, Meng; Jain, Richa N.; Chatterjee, Subhamoy; Shaikh, Zubair; Frissell, Nathaniel A.; Chen, Thomas Y.; French, Ryan J.; Isola, Brianna; McIntosh, Scott W.; Mason, Emily I.; Riley, Pete; Young, Tim; Barkhouse, Wayne; Kazachenko, Maria D.; Snow, Martin; Ozturk, Dogacan S.; Claudepierre, Seth G.; Mare, Francesca Di; Witteman, Andy; Kuzub, Jeremy (2022)

Space weather refers to conditions around a star, like our Sun, and its interplanetary space that may affect space- and ground-based assets as well as human life. Space weather can manifest as many different phenomena, ...
Physico-Chemical Properties and Deposition Potential of PM2.5 during Severe Smog Event in Delhi, India

Fatima, Sadaf; Mishra, Sumit Kumar; Ahlawat, Ajit; Dimri, Ashok Priyadarshan (2022)

The present work studies a severe smog event that occurred in Delhi (India) in 2017, targeting the characterization of PM2.5 and its deposition potential in human respiratory tract of different population groups in which ...
Observation of ionospheric Alfven resonator with double spectral resonance structures at low latitude station, Shillong ( dipoleL = 1.08)

Pavitran, Adhitya; Nosé, Masahito; Bulusu, Jayashree; Vichare, Geeta; Sinha, A. K. (2022)

Spectral Resonance Structures (SRS) of Ionospheric Alfven Resonator (IAR) are investigated by analysing the magnetic field data of a high sampling frequency induction coil magnetometer, installed at a low latitude Indian ...
Space plasma physics: a review

Tsurutani, Bruce T.; Zank, Gary P.; Sterken, Veerle J.; Shibata, Kazunari; Nagai, Tsugunobu; Mannucci, Anthony J.; Malaspina, David M.; Lakhina, Gurbax S.; Kanekal, Shrikanth G.; Hosokawa, Keisuke; Horne, Richard B.; Hajra, Rajkumar; Glassmeier, Karl-Heinz; Gaunt, C. Trevor; Chen, Peng-Fei; Akasofu, Syun-Ichi (2022)

Owing to the ever-present solar wind, our vast solar system is full of plasmas. The turbulent solar wind, together with sporadic solar eruptions, introduces various space plasma processes and phenomena in the solar ...
Evidence for super-adiabatic heating and cooling of Alfvénic solar wind

Shaikh, Zubair I.; Raghav, Anil N.; Vichare, Geeta; D’Amicis, Raffaella; Telloni, Daniele (2022)

Alfvénic fluctuations are widespread and crucial in various physical processes of space & astrophysical plasma. However, their role in heating and work done remains unexplored. Here, we have used Wind spacecraft’s data ...
Patterns of geomagnetic Pc1 pulsations in different solar cycles in the near-equatorial region from the Indian subcontinent

Bulusu, Jayashree; Pilipenko, Vyacheslav; Arora, Kusumita; C. Prasanna, C. Prasanna (2022)

Pc1 geomagnetic pulsations have been investigated at very low latitudes using 13 years of archived records covering solar cycle 20–21 from the equatorial site Choutuppal (CPL, L = 1.03), and 5 years of digital induction coil ...
Equatorial plasma bubbles: a review

Bhattacharyya, A. (2022)

The equatorial plasma bubble (EPB) phenomenon is an important component of space weather as the ionospheric irregularities that develop within EPBs can have major detrimental effects on the operation of satellite-based ...
Fluid simulation of dust-acoustic solitary waves in the presence of suprathermal particles: Application to the magnetosphere of Saturn

Singh, Kuldeep; Kakad, Amar; Kakad, Bharati; Kourakis, Ioannis (2022)

The observation of dust in the rings of Saturn by instruments on board the Voyager 1, Voyager 2, and Cassini missions triggered our interest in exploring the evolution of electrostatic dust acoustic waves (DAWs) in the ...
An imaging evidence of the east wall structuring of eastward drifting depletions observed near the EIA crest in India

Padincharapad, Saranya; Parihar, Navin; Taori, Alok; Sripathi, Samireddipalle (2022)

Structuring on the west (east) wall of eastward (westward) drifting airglow depletion under quiet (storm) time is common. Here, we report for the first time the rare occurrence of the east wall structuring of an eastward ...
Using principal component analysis of satellite and ground magnetic data to model the equatorial electrojet and derive its tidal composition

Soares, Gabriel; Yamazaki, Yosuke; Morschhauser, Achim; Matzka, Jürgen; Pinheiro, Katia J.; Stolle, Claudia; Alken, Patrick; Yoshikawa, Akimasa; Hozumi, Kornyanat; Kulkarni, Atul; Supnithi, Pornchai (2022)

The intensity of the equatorial electrojet (EEJ) shows temporal and spatial variability that is not yet fully understood nor accurately modeled. Atmospheric solar tides are among the main drivers of this variability but ...
L-Value and Energy Dependence of 0.1–50 keV O +, He +, and H + Ions for CME and CIR Storms Over the Entire Van Allen Probes Era

Pandya, Megha; Veenadhari, B.; Ebihara, Yusuke; Reeves, G. D. (2022)

Our studies report the first observation of L-value and energy sorted correlation of differential fluxes of 0.1–50 keV O +, He +, and H + ions with different geophysical parameters for 29 Coronal Mass Ejected (CME) and ...
Bernstein–Greene–Kruskal ion modes in dusty space plasmas application in Saturn’s magnetosphere

Aravindakshan, Harikrishnan; Kakad, Amar; Kakad, Bharati; Kourakis, Ioannis (2022)

Frequent observations of ion beams moving out from Saturn’s plasma environment hints at the generation of ion Bernstein–Greene–Kruskal (BGK) modes. As the plasma environments of Saturn and its moon Enceladus are characterized ...
test title

Unknown author (2022)
Supermagnetic storms: hazard to society

Lakhina, G.S.; Alex, S.; Tsurutani, B.T.; Gonzalez, W.D. (2012)

Magnetic storms are an important component of space weather effects on Earth. Superintense magnetic storms (defined here as those with Dst < 500 nT, where Dst stands for the disturbance storm time index that measures ...
On the GPS TEC variability for full solar cycle and its comparison with IRI-2016 model

Jethva, Chintan; Bagiya, Mala S.; Joshi, H.P. (2022)

The long-term comparison of International Reference Ionosphere (IRI-2016) predicted total electron content (TEC) with GPS TEC has been performed over low latitude northern EIA crest region (geographic: 22.29° N, 70.74° ...
The day-to-day variability in the Mesosphere and Lower Thermosphere in low latitudes: a study using MF radar

Gaikwad, H.P.; Fadnavis, S.; Gurav, O.B.; Bhosale, J.L.; Sharma, A.K.; Patil, P.T.; Ghodpage, R.N.; Sutar, M.M.; Chavan, G.A.; Birajdar, A.T.; Shetti, D.J. (2022)

This study presents the analysis of planetary waves (PWs) using daily mean wind velocities for four years (August 2013 to July 2017) of continuous measurements using MF radar over the low latitude Indian region Kolhapur ...
Investigation of gravity wave characteristics in the equatorial ionosphere during the passage of the 15 January 2010 solar eclipse over Tirunelveli

Barad, Rajesh Kumar; Sripathi, S. (2022)

Solar eclipses are known to produce gravity wave disturbances in the atmosphere-ionosphere system in addition to density reduction due to temporary changes in solar radiation. The magnetic equator is ideally located to ...
Multi-instrument observations of the ionospheric response to the 26 December 2019 solar eclipse over Indian and Southeast Asian longitudes

Barad, R.K.; Sripathi, S.; England, S.L. (2022)

Here, the impact of the 26 December 2019 solar eclipse on the equatorial and low latitude ionosphere has been investigated using ground and space-based observations over Indian and Southeast Asian longitudes. The ...
Long-lasting electromagnetic ion cyclotron wave signatures at Indian Antarctic Station, Maitri

Kakad, Amar; Upadhyay, Aditi; Kakad, Bharati; Rawat, Rahul (2022)

The long-lasting, persistence electromagnetic ion cyclotron (EMIC) waves can have a profound effect on the dynamics of the relativistic electrons in the Earth’s radiation belt. EMIC waves observed on the ground are the ...
A comparative analysis of the role of Interplanetary Magnetic Field (IMF) and Sudden Impulse (SI) in triggering a Substorm

Sinha, Shipra; Vichare, Geeta; Sinha, A.K. (2022)

During a typical Akasofu-type of substorm, the southward component of IMF Bz is necessary prior to the onset. However, a sudden compression of solar wind, if intense enough, can also sometimes trigger a substorm, and is ...

Now showing items 101-120 of 941

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