edu.ucar.opensky::articles:24214 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T06:37:05.893409 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7pk0kjd https://doi.org/10.14291/tccon.ggg2014.jpl01.R0/1149163 https Related Dataset #1 TCCON data from Jet Propulsion Laboratory (US), 2007, Release GGG2014.R0 https://doi.org/10.14291/tccon.ggg2014.jpl02.R1/1330096 https Related Dataset #2 TCCON data from Jet Propulsion Laboratory (US), 2011, Release GGG2014.R1 https://doi.org/10.14291/tccon.ggg2014.pasadena01.R1/1182415 https Related Dataset #3 TCCON data from Caltech (US), Release GGG2014.R1 https://doi.org/10.7927/H49C6VHW https Related Dataset #4 Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11 Magnetosphere-ionosphere coupling via prescribed field-aligned current simulated by the TIEGCM 2021-01-11T00:00:00Z publication https://n2t.org/ark:/85065/d7pk0kjd https://doi.org/10.1029/2020JA028665 Maute, Astrid author Richmond, Arthur D. author Lu, Gang author Knipp, Delores J. author Shi, Y. author Anderson, B. author UCAR/NCAR - Library publisher The magnetosphere-ionosphere (MI) coupling is crucial in modeling the thermosphere-ionosphere (TI) response to geomagnetic activity. In general circulation models (GCMs) the MI coupling is typically realized by specifying the ion convection and auroral particle precipitation patterns from for example, empirical or assimilative models. Assimilative models, such as the Assimilative Mapping of Ionospheric Electrodynamics, have the advantage that the ion convection and auroral particle precipitation patterns are mutually consistent and based on available observations. However, assimilating a large set of diverse data requires expert knowledge and is time consuming. Empirical models, on the other hand, are convenient to use, but do not capture all the observed spatial and temporal variations. With the availability of Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE) data, there is an opportunity for employing field-aligned currents (FAC) in GCMs to represent the MI coupling. In this study, we will introduce a new method which enables us to use observed FAC in GCMs and solve for the interhemispherically asymmetric electric potential distribution. We compare Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM) simulations of a geomagnetic storm period using the new approach and two other often-used methods for specifying MI coupling based on empirical and assimilative high latitude electric potentials. The comparison shows general similarities of the TI storm time response and improved temporal variability of the new method compared to using empirical models, but results also illustrate substantial differences due to our uncertain knowledge about the MI coupling process. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2021 American Geophysical Union. None eng geoscientificInformation