Daniel Okoh
Daniel Okoh
Other namesDaniel Izuikedinachi Okoh, Okoh, D. I., Okoh, D.
Space Environment Research Laboratory, CAR-NASRDA
Verified email at
Cited by
Cited by
Assessment of the NeQuick-2 and IRI-Plas 2017 models using global and long-term GNSS measurements
D Okoh, S Onwuneme, G Seemala, S Jin, B Rabiu, B Nava, J Uwamahoro
Journal of Atmospheric and Solar-Terrestrial Physics 170, 1-10, 2018
A regional GNSS-VTEC model over Nigeria using neural networks: A novel approach
D Okoh, O Owolabi, C Ekechukwu, O Folarin, G Arhiwo, J Agbo, S Bolaji, ...
Geodesy and Geodynamics 7 (1), 19-31, 2016
A Hybrid Regression‐Neural Network (HR‐NN) method for forecasting the solar activity
DI Okoh, GK Seemala, AB Rabiu, J Uwamahoro, JB Habarulema, ...
Space Weather 16 (9), 1424-1436, 2018
A neural network‐based ionospheric model over Africa from Constellation Observing System for Meteorology, Ionosphere, and Climate and Ground Global Positioning System observations
D Okoh, G Seemala, B Rabiu, JB Habarulema, S Jin, K Shiokawa, ...
Journal of Geophysical Research: Space Physics 124 (12), 10512-10532, 2019
Comparison of GPS-TEC observations over Addis Ababa with IRI-2012 model predictions during 2010–2013
AO Akala, EO Somoye, AO Adewale, EW Ojutalayo, SP Karia, RO Idolor, ...
Advances in Space Research 56 (8), 1686-1698, 2015
A comparison of IRI‐TEC predictions with GPS‐TEC measurements over Nsukka, Nigeria
D Okoh, A Eze, O Adedoja, B Okere, PN Okeke
Space Weather 10 (10), 2012
Signatures of equatorial plasma bubbles and ionospheric scintillations from magnetometer and GNSS observations in the Indian longitudes during the space weather events of early …
RK Vankadara, SK Panda, C Amory-Mazaudier, R Fleury, ...
Remote Sensing 14 (3), 652, 2022
Storm‐time modeling of the African regional ionospheric total electron content using artificial neural networks
D Okoh, JB Habarulema, B Rabiu, G Seemala, JB Wisdom, J Olwendo, ...
Space Weather 18 (9), e2020SW002525, 2020
Solar quiet current response in the African sector due to a 2009 sudden stratospheric warming event
OS Bolaji, EO Oyeyemi, OP Owolabi, Y Yamazaki, AB Rabiu, D Okoh, ...
Journal of Geophysical Research: Space Physics 121 (8), 8055-8065, 2016
The relation of H2CO, 12CO, and 13CO in molecular clouds
XD Tang, J Esimbek, JJ Zhou, G Wu, WG Ji, D Okoh
Astronomy & Astrophysics 551, A28, 2013
A study of the surface air temperature variations in Nigeria
N Yusuf, D Okoh, I Musa, S Adedoja, R Said
The Open Atmospheric Science Journal 11 (1), 2017
Using GPS-TEC data to calibrate VTEC computed with the IRI model over Nigeria
D Okoh, LA McKinnell, P Cilliers, P Okeke
Advances in Space Research 52 (10), 1791-1797, 2013
IRI-vTEC versus GPS-vTEC for Nigerian SCINDA GPS stations
D Okoh, LA McKinnell, P Cilliers, B Okere, C Okonkwo, B Rabiu
Advances in Space Research 55 (8), 1941-1947, 2015
First study on the occurrence frequency of equatorial plasma bubbles over West Africa using an all‐sky airglow imager and GNSS receivers
D Okoh, B Rabiu, K Shiokawa, Y Otsuka, B Segun, E Falayi, S Onwuneme, ...
Journal of Geophysical Research: Space Physics 122 (12), 12,430-12,444, 2017
Total electron content at equatorial and low-, middle-and high-latitudes in African longitude sector and its comparison with IRI-2016 and IRI-PLAS 2017 models
A Ogwala, EO Somoye, SK Panda, O Ogunmodimu, E Onori, SK Sharma, ...
Advances in space research 68 (5), 2160-2176, 2021
Developing an ionospheric map for South Africa
DI Okoh, LA McKinnell, PJ Cilliers
Annales Geophysicae 28 (7), 1431-1439, 2010
The role of meteorological variables and aerosols in the transmission of COVID‐19 during harmattan season
S Ogunjo, O Olaniyan, CF Olusegun, F Kayode, D Okoh, G Jenkins
GeoHealth 6 (2), e2021GH000521, 2022
On the relationships between sunspot number and solar radio flux at 10.7 centimeters
D Okoh, E Okoro
Solar Physics 295 (1), 1, 2020
Assessment of IRI-2012, NeQuick-2 and IRI-Plas 2015 models with observed equatorial ionization anomaly in Africa during 2009 sudden stratospheric warming event
OS Bolaji, EO Oyeyemi, AO Adewale, Q Wu, D Okoh, PH Doherty, ...
Journal of Atmospheric and Solar-Terrestrial Physics 164, 203-214, 2017
Preliminary results of temperature modelling in Nigeria using neural networks
D Okoh, N Yusuf, O Adedoja, I Musa, B Rabiu
Weather 70 (12), 336-343, 2015
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