P. Jayachandran

发表

The nature of GPS differential receiver bias variability: An examination in the polar cap region

Richard B. Langley, P. T. Jayachandran, David R. Themens, 2015 .

Determining receiver biases in GPS-derived total electron content in the auroral oval and polar cap region using ionosonde measurements

Richard B. Langley, John W. MacDougall, P. T. Jayachandran, 2011, 2011 XXXth URSI General Assembly and Scientific Symposium.

Determining receiver biases in GPS-derived total electron content in the auroral oval and polar cap region using Ionosonde measurements

P. T. Jayachandran, R. B. Langley, David R. Themens, 2011, 2011 XXXth URSI General Assembly and Scientific Symposium.

Automated identification and tracking of polar-cap plasma patches at solar minimum

P. Jayachandran, K. Hodges, R. Burston, 2014 .

Temporal and spatial variations of GPS TEC and phase during auroral substorms and breakups

D. Themens, P. Jayachandran, J. Weygand, 2020 .

GPS total electron content variations associated with a polar cap arc

R. Langley, K. Shiokawa, P. Jayachandran, 2009 .

Global and local equatorward expansion of the ion auroral oval before substorm onsets

D. Moorcroft, P. Jayachandran, J. MacDougall, 2005 .

Global Propagation of Ionospheric Disturbances Associated With the 2022 Tonga Volcanic Eruption

D. Themens, P. Jayachandran, S. Elvidge, 2022, Geophysical Research Letters.

Comparison of observed and predicted MUF(3000)F2 in the polar cap region

D. Themens, P. Jayachandran, D. Danskin, 2015 .

Enhanced Polar Outflow Probe Ionospheric Radio Occultation Measurements at High Latitudes: Receiver Bias Estimation and Comparison With Ground‐Based Observations

R. Langley, D. Themens, P. Jayachandran, 2018 .

Solar Cycle Variations of GPS Amplitude Scintillation for the Polar Region

P. Jayachandran, K. Meziane, A. Kashcheyev, 2020, Space Weather.

High-latitude GPS phase scintillation and cycle slips during high-speed solar wind streams and interplanetary coronal mass ejections: a superposed epoch analysis

P. Jayachandran, I. Richardson, P. Prikryl, 2014, Earth, Planets and Space.

Mesoscale Convection Structures Associated With Airglow Patches Characterized Using Cluster‐Imager Conjunctions

P. Jayachandran, Y. Nishimura, K. Shiokawa, 2019, Journal of Geophysical Research: Space Physics.

Receiver DCB estimation and GPS vTEC study at a low latitude station in the South Pacific

R. Prasad, P. Jayachandran, Sushi I Kumar, 2016 .

Resolute Bay CADI ionosonde drifts, PolarDARN HF velocities, and cross polar cap potential

P. Jayachandran, N. Nishitani, D. Mori, 2012 .

Oscillations of the equatorward boundary of the ion auroral oval – radar observations

P. Jayachandran, J. MacDougall, Y. Ebihara, 2008 .

Ground-based radar detection of the equatorward boundary of ion auroral oval in the dusk-midnight sector and its dynamical association with substorms

P. Jayachandran, J. MacDougall, E. Donovan, 2006 .

Canadian High Arctic Ionospheric Network (CHAIN)

Richard B. Langley, John W. MacDougall, P. T. Jayachandran, 2009 .

Evolution of Mid‐latitude Density Irregularities and Scintillation in North America During the 7–8 September 2017 Storm

S. Mrak, J. Semeter, Y. Nishimura, 2021, Journal of Geophysical Research: Space Physics.

GPS Scintillations and TEC Variations in Association With a Polar Cap Arc

P. Jayachandran, Qinghe Zhang, K. Shiokawa, 2021, Journal of Geophysical Research: Space Physics.

E‐CHAIM as a Model of Total Electron Content: Performance and Diagnostics

D. Themens, P. Jayachandran, S. Elvidge, 2021, Space Weather.

Comments on “Stochastic TEC Structure Characterization” by Charles Rino, Yu Morton, Brian Breitsch, and Charles Carrano, Journal of Geophysical Research: Space Physics, 124, https://doi.org/10.1029/2019JA026958

P. Jayachandran, A. McCaffrey, 2021, Journal of Geophysical Research: Space Physics.

The Limits of Empirical Electron Density Modeling: Examining the Capacity of E‐CHAIM and the IRI for Modeling Intermediate (1‐ to 30‐Day) Timescales at High Latitudes

D. Themens, P. Jayachandran, B. P. Reid, 2020, Radio Science.

A Bottomside Parameterization for the Empirical Canadian High Arctic Ionospheric Model

D. Themens, P. Jayachandran, B. P. Reid, 2019, Radio Science.

Examining the use of the NeQuick bottomside and topside parameterizations at high latitudes

D. Themens, P. Jayachandran, R. Varney, 2018 .

Spectral characteristics of auroral region scintillation using 100 Hz sampling

P. Jayachandran, A. McCaffrey, 2017, GPS Solutions.

The Empirical Canadian High Arctic Ionospheric Model ( E-CHAIM ) : NmF 2

D. Themens, P. Jayachandran, 2017 .

GPS TEC response to Pc4 “giant pulsations”

P. Jayachandran, R. Redmon, H. Singer, 2016 .

GPS phase scintillation at high latitudes during the geomagnetic storm of 17–18 March 2015

M. Aquino, E. Thomas, P. Jayachandran, 2016 .

The Empirical Canadian High Arctic Ionospheric Model (E‐CHAIM): NmF2 and hmF2

D. Themens, P. Jayachandran, C. Hall, 2016 .

MUF variability in the Arctic region: A statistical comparison with the ITU‐R variability factors

P. Jayachandran, R. Athieno, 2016 .

Solar activity variability in the IRI at high latitudes: Comparisons with GPS total electron content

D. Themens, P. Jayachandran, 2016 .

Large‐amplitude GPS TEC variations associated with Pc5–6 magnetic field variations observed on the ground and at geosynchronous orbit

P. Jayachandran, R. Redmon, H. Singer, 2015 .

Electron density and electric field over Resolute Bay and F region ionospheric echo detection with the Rankin Inlet and Inuvik SuperDARN radars

D. Themens, P. Jayachandran, A. Koustov, 2014 .

On the relation between auroral “scintillation” and “phase without amplitude” scintillation: Initial investigations

R. Langley, P. Jayachandran, E. Donovan, 2014, 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS).

A top to bottom evaluation of IRI 2007 within the polar cap

D. Themens, P. Jayachandran, J. MacDougall, 2014 .

GPS phase scintillation and HF radar backscatter occurrence in the high-latitude ionosphere

P. Jayachandran, R. Chadwick, P. Prikryl, 2011, 2011 XXXth URSI General Assembly and Scientific Symposium.

High‐latitude GPS TEC changes associated with a sudden magnetospheric compression

I. J. Rae, P. Jayachandran, J. MacDougall, 2011 .

High-latitude ionospheric response to co-rotating interaction region- and coronal mass ejection-driven geomagnetic storms revealed by GPS tomography and ionosondes

C. Mitchell, P. Jayachandran, M. Denton, 2010, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences.

Elliptical model of cutoff boundaries for the solar energetic particles measured by POES satellites in December 2006

P. Jayachandran, A. Dmitriev, L. Tsai, 2010, 1305.6710.

Polar cap convection relationships with solar wind

P. Jayachandran, J. MacDougall, 2001 .

Sunward polar cap convection

P. Jayachandran, J. MacDougall, 2001 .

Polar patches: Auroral zone precipitation effects

P. Jayachandran, J. MacDougall, 2007 .

Sporadic E at cusp latitudes

P. Jayachandran, J. MacDougall, 2005 .

Central polar cap convection response to short duration southward Interplanetary Magnetic Field

P. Jayachandran, J. MacDougall, 2000 .

Seasonal and IMF By effect on the polar cap convection orientation

P. Jayachandran, J. MacDougall, 1999 .

Statistical Study of the Relationship Between Ion Upflow and Field‐Aligned Current in the Topside Ionosphere for Both Hemispheres During Geomagnetic Disturbed and Quiet Time

P. Jayachandran, Qinghe Zhang, M. Hairston, 2020, Journal of Geophysical Research: Space Physics.

Equatorial evening prereversal electric field enhancement and sporadic E layer disruption: A manifestation of E and F region coupling

I. Batista, P. Jayachandran, J. MacDougall, 2003 .

On the production of traveling ionospheric disturbances by atmospheric gravity waves

John W. MacDougall, P. T. Jayachandran, Paulo Roberto Fagundes, 2009 .

Spaced transmitter measurements of medium scale traveling ionospheric disturbances near the equator

I. Batista, P. Jayachandran, J. MacDougall, 2011 .

Solar terminator and auroral sources for traveling ionospheric disturbances in the midlatitude F region

P. Jayachandran, J. MacDougall, 2011 .

Substorm onset location and the equatorward boundary of the proton auroral oval

D. Moorcroft, P. Jayachandran, J. MacDougall, 2002 .

Comparison of the CHAMP radio occultation data with the Canadian advanced digital ionosonde in the Polar Regions

N. Jakowski, P. Jayachandran, J. MacDougall, 2009 .

Global Propagation of Ionospheric Disturbances Associated With the 2022 Tonga Volcanic Eruption

D. Themens, P. Jayachandran, S. Elvidge, 2022, Geophysical Research Letters.

The Empirical Canadian High Arctic Ionospheric Model (Eâ•’CHAIM): N_mF₂ and h_mF₂

D. Themens, P. Jayachandran, C. Hall, 2017 .

Simultaneous Observations of a Polar Cap Sporadic‐E Layer by Twin Incoherent Scatter Radars at Resolute

D. Themens, P. Jayachandran, Qinghe Zhang, 2022, Journal of Geophysical Research: Space Physics.

SuperDARN E-region backscatter boundary in the dusk-midnight sector – tracer of equatorward boundary of the auroral oval

D. Moorcroft, P. Jayachandran, J. MacDougall, 2002 .

Polar cap influx

P. Jayachandran, J. MacDougall, 2005 .

Traveling ionospheric disturbances near London, Canada

P. Jayachandran, J. MacDougall, Gang Li, 2009 .

On the equatorward motion and fading of proton aurora during substorm growth phase

P. Jayachandran, B. Jackel, E. Spanswick, 2007 .

The polar ionosphere

P. Jayachandran, J. MacDougall, D. McEwen, 2004 .

Coincidence of the ion precipitation boundary with the HF E region backscatter boundary in the dusk‐midnight sector of the auroral oval

D. Moorcroft, P. Jayachandran, J. MacDougall, 2002 .

A Case Study of Polar Cap Sporadic-E Layer Associated with TEC Variations

Yong Wang, Anthony M. McCaffrey, Richard Chadwick, 2021, Remote. Sens..

Polar cap Sporadic-E: part 1, observations

John W. MacDougall, P. T. Jayachandran, John M. C. Plane, 2000 .

A neural network‐based foF2 model for a single station in the polar cap

D. Themens, P. Jayachandran, R. Athieno, 2017 .

Seasonal and diurnal variations of PolarDARN F region echo occurrence in the polar cap and their causes

D. Themens, P. Jayachandran, A. Koustov, 2014 .

Short- and long-term variation in IEC over Waltair

P. Jayachandran, P. Sriram, P. R. Rao, 1994 .

Combined Contribution of Solar Illumination, Solar Activity, and Convection to Ion Upflow Above the Polar Cap

P. Jayachandran, Qinghe Zhang, R. Heelis, 2018 .

Polar cap hot patches: Enhanced density structures different from the classical patches in the ionosphere

Q.‐H. Zhang, M. Lockwood, B.‐C. Zhang, 2017 .

Experimental Evidence on the Dependence of the Standard GPS Phase Scintillation Index on the Ionospheric Plasma Drift Around Noon Sector of the Polar Ionosphere

P. T. Jayachandran, Mark Lester, J. M. Ruohoniemi, 2018 .

Seasonal variation in ionospheric electron content and irregularities over Waltair — A comparison with SLIM model

P. Jayachandran, D. Prasad, P. R. Rao, 1996 .

Turbulence Signatures in High‐Latitude Ionospheric Scintillation

P. Jayachandran, K. Meziane, A. Hamza, 2022, Journal of Geophysical Research: Space Physics.

GPS TEC technique for observation of the evolution of substorm particle precipitation

P. T. Jayachandran, Donald Danskin, Emma Spanswick, 2011 .

On the latitude-dependence of the GPS phase variation index in the polar region

Karim Meziane, Anton Kashcheyev, P. T. Jayachandran, 2020, 2020 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE).

GPS amplitude and phase scintillation associated with polar cap auroral forms

K. Shiokawa, P. Jayachandran, K. Hosokawa, 2017 .

Polar Ionospheric Large‐Scale Structures and Dynamics Revealed by TEC Keogram Extracted From TEC Maps

Q.‐H. Zhang, P. Jayachandran, N. Balan, 2020, Journal of Geophysical Research: Space Physics.

GPS TEC variations in the polar cap ionosphere: Solar wind and IMF dependence

John W. MacDougall, P. T. Jayachandran, P. Jayachandran, 2016 .

GPS TEC, scintillation and cycle slips observed at high latitudes during solar minimum

John W. MacDougall, P. T. Jayachandran, Emma Spanswick, 2010 .

Ground-Based Radar Detection of the Inner Boundary of the Ion Plasma Sheet and its Response to the Changes in the Interplanetary Magnetic Field

D. Moorcroft, P. Jayachandran, J. MacDougall, 2006 .

Winter cross polar cap current estimation

P. Jayachandran, J. MacDougall, 2008 .

Reply to comment by G. L. Siscoe and K. D. Siebert on “Polar cap voltage saturation”

P. Jayachandran, J. MacDougall, 2007 .

Ionospheric response to the corotating interaction region-driven geomagnetic storm of October 2002

C. Mitchell, P. Jayachandran, J. MacDougall, 2009 .

GPS phase scintillation at high latitudes during geomagnetic storms of 7–17 March 2012 – Part 2: Interhemispheric comparison

Marcio Aquino, P. T. Jayachandran, Cathryn N. Mitchell, 2015 .

Substorm time scales from polar cap convection measurements

P. Jayachandran, J. MacDougall, 2007 .

HF detection of slow long-lived E region plasma structures

D. Moorcroft, P. Jayachandran, J. MacDougall, 2000 .

Azimuthal expansion of the dipolarization at geosynchronous orbits associated with substorms

P. Jayachandran, C. Watson, 2009 .

Substorm associated changes in the high‐latitude ionospheric convection

D. Moorcroft, P. Jayachandran, J. MacDougall, 2003 .

Equatorial F region zonal plasma irregularity drifts under magnetospheric disturbances

P. Jayachandran, J. MacDougall, M. A. Abdu, 1998 .

Interhemispheric comparison of GPS phase scintillation at high latitudes during the magnetic-cloud-induced geomagnetic storm of 5–7 April 2010

P. T. Jayachandran, Cathryn N. Mitchell, Donald Danskin, 2011 .

Improved amplitude- and phase-scintillation indices derived from wavelet detrended high-latitude GPS data

Richard B. Langley, John W. MacDougall, P. T. Jayachandran, 2012, GPS Solutions.

Use of varying shell heights derived from ionosonde data in calculating vertical total electron content (TEC) using GPS – New method

Richard B. Langley, John W. MacDougall, P. T. Jayachandran, 2009 .

Observations of dipolarization at geosynchronous orbits and its response in the polar cap convection during extreme southward interplanetary magnetic field conditions

P. Jayachandran, J. MacDougall, M. Henderson, 2007 .

GPS receiver CODE bias estimation: A comparison of two methods

Richard B. Langley, Anthony M. McCaffrey, P. T. Jayachandran, 2017 .

Characteristics of GPS TEC variations in the polar cap ionosphere

John W. MacDougall, P. T. Jayachandran, P. Jayachandran, 2016 .

Dependencies of GPS Scintillation Indices on the Ionospheric Plasma Drift and Rate of Change of TEC Around the Dawn Sector of the Polar Ionosphere

Q.‐H. Zhang, M. Lester, P. Jayachandran, 2022, Journal of Geophysical Research: Space Physics.

A comparison between large‐scale irregularities and scintillations in the polar ionosphere

Q.‐H. Zhang, M. Lockwood, M. Lester, 2016 .

GPS phase scintillation at high latitudes during geomagnetic storms of 7–17 March 2012 – Part 1: The North American sector

P. T. Jayachandran, Yu Morton, Yu Jiao, 2015 .

Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013

P. T. Jayachandran, P. Jayachandran, R. Chadwick, 2015 .

Toward the probabilistic forecasting of high‐latitude GPS phase scintillation

P. T. Jayachandran, Ian G. Richardson, P. Jayachandran, 2012 .

Climatology of GPS phase scintillation and HF radar backscatter for the high-latitude ionosphere under solar minimum conditions

P. T. Jayachandran, P. Jayachandran, R. Chadwick, 2011 .

GPS phase scintillation and proxy index at high latitudes during a moderate geomagnetic storm

P. T. Jayachandran, Donald Danskin, Anthea J. Coster, 2013 .

Effect of equatorial ionization anomaly on the occurrence of spread-F

P. Jayachandran, P. V. Rao, V. Somayajulu, 1997 .

Sequential sporadic-E layers at low latitudes in the Indian sector

P. Jayachandran, V. Somayajulu, P. R. Rao, 1999 .

Ionospheric irregularities: The role of the equatorial ionization anomaly

P. T. Jayachandran, P. Jayachandran, P. Rama Rao, 1997 .

Presunrise spread F at Fortaleza

John W. MacDougall, P. T. Jayachandran, I. Batista, 1998 .

Multifrequency Observation of High Latitude Scintillation: A Comparison With the Phase Screen Model

P. Jayachandran, K. Meziane, A. Kashcheyev, 2022, IEEE Transactions on Geoscience and Remote Sensing.

Characteristics of VHF radiowave scintillations over a solar cycle (1983–1993) at a low-latitude station: Waltair (17.7°N, 83.3°E)

P. Jayachandran, D. Prasad, P. R. Rao, 1997 .

A‐CHAIM: Near‐Real‐Time Data Assimilation of the High Latitude Ionosphere With a Particle Filter

D. Themens, P. Jayachandran, T. Ulich, 2023, Space Weather.

Multistation VHF scintillation studies at low latitudes

P. Jayachandran, D. Prasad, P. R. Rao, 1996 .

Determination of the Refractive Contribution to GPS Phase “Scintillation”

P. T. Jayachandran, P. Jayachandran, A. McCaffrey, 2019, Journal of Geophysical Research: Space Physics.

Investigating high‐latitude ionospheric turbulence using global positioning system data

P. T. Jayachandran, Ahmed M. Hamza, P. Jayachandran, 2014 .

Development and Validation of Precipitation Enhanced Densities for the Empirical Canadian High Arctic Ionospheric Model

D. Themens, P. Jayachandran, C. Watson, 2021, Space Weather.

E‐CHAIM as a Model of Total Electron Content: Performance and Diagnostics

D. Themens, P. Jayachandran, S. Elvidge, 2021, Space Weather.

Topside Electron Density Representations for Middle and High Latitudes: A Topside Parameterization for E‐CHAIM Based On the NeQuick

D. Bilitza, D. Themens, P. Jayachandran, 2018 .

Validating the performance of the Empirical Canadian High Arctic Ionospheric Model (E-CHAIM) with in situ observations from DMSP and CHAMP

D. Themens, P. Jayachandran, A. McCaffrey, 2019, Journal of Space Weather and Space Climate.

Polar cap Sporadic-E: part 2, modeling

John W. MacDougall, P. T. Jayachandran, John M. C. Plane, 2000 .

A Bottomside Profile Function for the Empirical Canadian High Arctic Ionospheric Model (E- CHAIM)

D. Themens, P. Jayachandran, 2018 .

Ionospheric Changes Observed Over Waltair(Dip 20 N) During the Total Solar Eclipse of 24th October 1995

P. Jayachandran, P. R. Rao, P. S. Ram, 1997 .

GPS total electron content variations associated with poleward moving Sun-aligned arcs

K. Shiokawa, Y. Otsuka, P. Jayachandran, 2012 .

High‐latitude intermittent ionospheric scintillations: Exploring the Castaing distribution

P. Jayachandran, A. Hamza, H. Mezaoui, 2015 .

A Bayesian Inference‐Based Empirical Model for Scintillation Indices for High‐Latitude

P. Jayachandran, K. Meziane, A. Kashcheyev, 2021, Space Weather.

Global auroral imaging in the ILWS era

P. T. Jayachandran, Stephen B. Mende, M. Syrjäsuo, 2007 .

Observation of subsecond variations in auroral region total electron content using 100 Hz sampling of GPS observables

P. Jayachandran, A. McCaffrey, 2017 .

An interhemispheric comparison of GPS phase scintillation with auroral emission observed at the South Pole and from the DMSP satellite

P. T. Jayachandran, Cathryn N. Mitchell, Donald Danskin, 2013 .

Polar cap voltage saturation

P. Jayachandran, J. MacDougall, 2006 .

Spectral Characteristics of Phase Fluctuations at High Latitude

P. Jayachandran, K. Meziane, A. Kashcheyev, 2023, Journal of Geophysical Research: Space Physics.

Two‐Component Phase Scintillation Spectra in the Auroral Region: Observations and Model

P. Jayachandran, K. Meziane, A. Hamza, 2023, Journal of Geophysical Research: Space Physics.

A comparison between large‐scale irregularities and scintillations in the polar ionosphere

M. Lockwood, J. Moen, M. Lester, 2016 .

On the accuracy of the GPS L2 observable for ionospheric monitoring

Anthony M. McCaffrey, P. T. Jayachandran, J-M. Sleewaegen, 2018, 2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC).

GPS tomography in the polar cap: comparison with ionosondes and in situ spacecraft data

John W. MacDougall, P. T. Jayachandran, Cathryn N. Mitchell, 2011 .

Nightside High‐Latitude Phase and Amplitude Scintillation During a Substorm Using 1‐Second Scintillation Indices

V. Angelopoulos, S. Mrak, P. Jayachandran, 2023, Journal of Geophysical Research: Space Physics.

Phase and Amplitude Scintillations Associated With Polar Cap Patches: Statistical and Event Analyses

P. Jayachandran, S. Zou, Jiaen Ren, 2024, Journal of Geophysical Research: Space Physics.

University of Birmingham Development and validation of precipitation enhanced densities for the Empirical Canadian High Arctic Ionospheric Model (E-CHAIM)

D. Themens, P. Jayachandran, C. Watson, 2021 .

Comparison of the Occurrence Morphology of Phase Scintillation of GPS and Beidou Signals at Zhongshan Station, Antarctica

Xiangcai Chen, P. Jayachandran, Yong Wang, 2024, Journal of Geophysical Research: Space Physics.