Gowtam, V. Sai; Connor, Hyunju; Kunduri, Bharat S. R.; Raeder, Joachim; Laundal, Karl M.; Tulasi Ram, S.; Ozturk, Dogacan S.; Hampton, Donald; Chakraborty, Shibaji; Owolabi, Charles; Keesee, Amy(2024-03)
We introduce a new framework called Machine Learning (ML) based Auroral Ionospheric
electrodynamics Model (ML‐AIM). ML‐AIM solves a current continuity equation by utilizing the ML model of
Field Aligned Currents of Kunduri ...
The Asian summer monsoon is one of the active synoptic scale weather phenomena, and has significant socioeconomic implications. A vast population relies on the associated precipitation, mostly dominating the agricultural ...
The boundary layer plays a vital role in governing the local atmospheric dynamics and meteorology, including the vertical transport of moisture, momentum, energy, and air pollutants. Hence, accurate parameterization of the ...
Sreekala, G.; Sebastian, Sijo; Michael, Manesh; Devi, E. Savithri; Anilkumar, C. P.; Venugopal, Chandu(2018)
206Alfvénic turbulence has been detected by Comet Halley at spacecrafts Giotto and Vega and by Comet Giacobini-Zinner at International Cometary Explorer (ICE). We have studied the KAW instability driven by field aligned ...
A generation mechanism for kinetic Alfvén waves
(KAWs) by ion-beam and velocity shear is discussed.
For this, a three-component plasma model, consisting of
cold background ions, hot electrons, and hot ion beams ...
Some of the linear macroinstabilities which can play important roles in space plasmas like the Earth's ionosphere and magnetosphere are discussed. Starting from the basic concept of plasma instabilities, we proceed to ...
The mesosphere/lower thermosphere (MLT) wind data from the 46 ground-based (GB) MF and meteor radar (MR) stations, located at the different latitudes over the globe, and the space-based (SB) HRDI data were used for ...
Pickett, J. S.; Kahler, S. W.; Chen, L.-J.; Huff, R. L.; Santolik, O.; Khotyaintsev, Y.; Décréau, P. M. E.; Winningham, D.; Frahm, R.; Goldstein, M. L.; Lakhina, G. S.; Tsurutani, B. T.; Lavraud, B.; Gurnett, D. A.; André, M.; Fazakerley, A.; Balogh, A.; Rème, H.(2004)
We report on recent measurements of solitary waves made by the Wideband Plasma Wave Receiver located on each of the four Cluster spacecraft at 4.5-6.5RE (well above the auroral acceleration region) as they cross field lines ...
Sojka, J.J.; Eccles, J.V.; Thiemann, H.; Sridharan, R.; Lakhina, G. S.; Rao, P. B.; Schunk, R.W.(2002)
An ionosphere model for a single, low-latitude, magnetic meridion is driven with observation-determined drivers to produce electron density specifications containing day to day ionospheric weather. The drivers are vertical ...
Ahmad, S. N. A.; Jusoh, M. H.; Kasran, F. A. M.; Abdullah, M.; Veenadhari, B.; Uozumi, T.; Abe, S.; Yoshikawa, A.; Cardinal, M. G.(2015)
This paper presents variations of Ultra Low Frequency
(ULF) and Very Low Frequency (VLF) during moderate
geomagnetic storm using ground based observatories, Magnetic
Data Acquisition System (MAGDAS)/Circum-Pan ...
South Atlantic Magnetic Anomaly (SAMA) due to its weak total geomagnetic field F is known to be a sink of trapped charged particles from the inner radiation belt during both magnetically quiet and disturbed periods. ...
Maharaj, S. K.; Bharuthram, R.; Singh, S. V.; Pillay, S. R.; Lakhina, G. S.(2011)
The existence of large amplitude double layers in a plasma composed of cold negative
dust, adiabatic positive dust, non-thermal ions and Boltzmann electrons is investigated using the
Sagdeev pseudopotential technique. ...
Ramkumar, T.K.; Bhavanikumar, Y.; Rao, D. Narayana; Gurubaran, S.; Babu, A. Narendra; Ghosh, A.K.; Rajaram, R.(2006)
As an observational evidence, it is reported that long period oscillations near 21- and 30-days generated in the lower atmosphere (troposphere and lower stratosphere) in the Indian tropical regions have possible influences ...
Parhi, S.; Pandey, B. P.; Goossens, M.; Lakhina, G. S.(1998)
The solar corona supports a variety of waves generated by convective upwelling motion in the photosphere. In order to explain the observed coronal temperature profile, resonant absorption of MHD waves by coronal plasma ...
Singh, Ashutosh K.; Patel, R P; Singh, R; Singh, K K; Singh, A K(2010)
In this paper, discrete VLF chorus emissions recorded at low latitude ground station Jammu (geomag. Lat. = 220 26/ N, L = 1.17) are reported and their characteristics based on complete spectral analysis have been carried ...
Bhonsle, R. V.; Sharma, A. K.; Patil, P. T.; Powar, Arun S.; Waichal, P. P.; Vhatkar, R. S.; Patil, K. J.; Samant, J. S.(2007)
This note describes teaching and R & D activities presently
being carried out in the solar-terrestrial Physics at the Space Science laboratory,
Department of Physics, Shivaji University, Kolhapur. A variety of solar ...
In this paper we are concerned with the variation of the atmospheric electric field and the airearth current due to the excessive power generated by the solar wind-magnetosphere dynamo during geomagnetic storms, recorded ...
Two regions of the globe that are most affected by ionospheric scintillations are the auroral region and the low-latitude region encompassing the dip equator. Our present-day dependence on satellite-based communication and ...
Observations of mesospheric winds in the altitude region 84–98 km with the medium frequency (MF) radar located close to the magnetic equator at Tirunelveli (
geographic, 0.35°N magnetic dip), India, and the ground-based ...
Patil, Omkar M.; Moharana, Sidha S.; Maurya, Ajeet K.; Parihar, Navin; Singh, Rajesh; Dimri, A. P.(2024-04)
The study presents detailed meteorological characteristics of extremely severe cyclonic storm
(ESCS) Fani, and subsequent Atmospheric Gravity Waves(AGWs) induced D‐region ionospheric perturbations
and the role of lightning ...