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How do core surface flow models vary when inverted from IGRF-14 candidate field models? [PDF]

Earth, Planets and Space
The International Geomagnetic Reference Field (IGRF) model is a series of models that describe the large scale magnetic field measured at the Earth’s surface. It is used by a wide range of scientists and industries, including in navigation, space weather
Hannah Rogers, Mioara Mandea, Mandea M   +2 more
exaly   +8 more sources

IGRF-14 secular variation prediction from core surface flow acceleration [PDF]

Earth, Planets and Space
The International Geomagnetic Reference Field (IGRF) has been regularly updated since its inception in 1965. Every recent iteration contains an estimate of the geomagnetic secular variation (SV), for the intermediate years between iterations. We submit a
Ciarán Beggan, Kathryn Whaler, Frederik Dahl Madsen   +2 more
exaly   +8 more sources

Forecasting secular variation using physics-informed neural networks for IGRF-14 [PDF]

Earth, Planets and Space
In response to the call for candidate models for the 14th generation of the International Geomagnetic Reference Field (IGRF) by the Geomagnetic Field Modeling Working Group (V-MOD) of the International Association of Geomagnetism and Aeronomy (IAGA), we ...
N. Shakespeare-Rees, P. W. Livermore, C. J. Davies, H. F. Rogers, C. D. Beggan, W. J. Brown, C. C. Finlay   +6 more
doaj   +5 more sources

A secular variation candidate for IGRF-14 based on core-flow inversion via an ensemble Kalman smoother [PDF]

Earth, Planets and Space
We present a candidate mean secular variation (SV) model for the 2025.0 $$-$$ - 2030.0 period. The forecasted SV is produced with a data assimilation (DA) system built around a simple frozen-flux model of the core flow and magnetic field near the core ...
Kyle Gwirtz, Terence Sabaka, Weijia Kuang   +2 more
doaj   +5 more sources

GCRAS candidate field models for IGRF-14

Earth, Planets and Space
We present candidate models for the 14th generation of the International Geomagnetic Reference Field (IGRF-14), specifically the Definitive Geomagnetic Reference Field (DGRF) for epoch 2020.0 and the IGRF for epoch 2025.0.
Roman Krasnoperov, Anatoly Soloviev, Ilya Firsov   +2 more
exaly   +4 more sources

Candidate geomagnetic field models for IGRF-14 and secular acceleration since 2020

Earth, Planets and Space
IGRF-14 is the fourteenth generation of the International Geomagnetic Reference Field (IGRF), a spherical harmonic model of Earth’s main magnetic field and its secular variation, developed through international collaboration under the auspices of the ...
Arnaud Chulliat
exaly   +4 more sources

The Spanish contribution to IGRF-14

Earth, Planets and Space
This study presents the methodology and results of the Spanish team contribution to the 14th generation of the International Geomagnetic Reference Field (IGRF-14), headed by Universidad Complutense de Madrid (UCM).
Mario Serrano, F. Javier Pavón-Carrasco, Saioa A. Campuzano, Santiago Marsal, J. Miquel Torta, J. Manuel Tordesillas, Julián Fiz   +6 more
doaj   +3 more sources

MISTA candidate magnetic field models for IGRF-14 derived from MSS-1, Swarm and observatory data

Earth, Planets and Space
The International Geomagnetic Reference Field (IGRF) is a spherical harmonic model representing the large-scale Earth’s main magnetic field and its secular variation (SV).
Hongbo Yao, Pengfei Liu, Qing Yan, Yi Jiang, Juyuan Xu, Liang Yin, Zhengyong Ren, Yufeng Lin, Yan Feng, Yongxin Pan, Keke Zhang   +10 more
doaj   +3 more sources

Climatology of TEC Longitudinal Difference in Middle Latitudes of East Asia

Remote Sensing, 2022
In this paper, a statistical analysis of the diurnal, seasonal and solar cycle variation in the TEC longitudinal difference in midlatitudes of East Asia is presented using CODE GIMs data in 2015–2019. Moreover, the empirical neutral wind model HWM-14 and
Xingxin Sun, Yuqiang Zhang, Jian Feng, Zhensen Wu, Na Xu, Tong Xu, Zhongxin Deng, Yi Liu, Fubin Zhang, Yufeng Zhou, Chen Zhou, Zhengyu Zhao   +11 more
doaj   +2 more sources

Geomagnetic field modelling and USTHB IGRF-14 candidates

Earth, Planets and Space
The present paper describes the construction of a global spherical harmonic model of the geomagnetic field, developed as the USTHB (University of Science and Technology Houari Boumediene) candidate for the 14th generation of International Geomagnetic ...
Abdenaceur Lemgharbi, M. Hamoudi, V. Lesur, M. Mandea, T. Amezza, A. Abtout   +5 more
doaj   +2 more sources