3-Day Magnetopause Standoff

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This cygnet displays the most sunward location of the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]], or magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] standoff distance, for the last three days. The magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] separates Earth's magnetic domain from the solar windplasma flowing out from the sun [[Glossary/ solar wind]] and its embedded interplanetary field (IMF).

Contents

Description

The three-dimensional location of the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] represents a balance of pressures: Pressures of solaradjective used to describe aspects or behaviors of the Sun [[Glossary/solar]]-origin balance pressures of Earth-origin at the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]]. The magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] is computed by tracing magnetic field lines in the dayside magnetosphereThe region of space dominated by the magnetic field of a star or planet. Earth’s magnetosphere takes on a tear-drop shape under the influence of the flowing solar wind. [[Glossary/magnetosphere]] in 3-D data output from the SWMF/BATSRUS magnetosphereThe region of space dominated by the magnetic field of a star or planet. Earth’s magnetosphere takes on a tear-drop shape under the influence of the flowing solar wind. [[Glossary/magnetosphere]] real-time simulation.

Earth's magnetic field exerts an outward magnetic pressure, as well as a very weak gas pressure produced by the tenuous plasmaa fourth state of matter where atoms are broken down into ions and separate electrons [[Glossary/plasma]] inside the magnetosphereThe region of space dominated by the magnetic field of a star or planet. Earth’s magnetosphere takes on a tear-drop shape under the influence of the flowing solar wind. [[Glossary/magnetosphere]]. The solar windplasma flowing out from the sun [[Glossary/ solar wind]] plasmaa fourth state of matter where atoms are broken down into ions and separate electrons [[Glossary/plasma]] exerts a flow (ram) pressure that opposes Earth's magnetic pressure. The solar plasmaa fourth state of matter where atoms are broken down into ions and separate electrons [[Glossary/plasma]] also produces a small gas pressure created by the random motion of the solar windplasma flowing out from the sun [[Glossary/ solar wind]] ions and electrons. Adding to the solar windplasma flowing out from the sun [[Glossary/ solar wind]] plasmaa fourth state of matter where atoms are broken down into ions and separate electrons [[Glossary/plasma]] pressure is a small component of pressure from the Sun's interplanetary magnetic field.

The magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] standoff distance as plotted for the last three days is the distance on the GSM Sun-Earth line of the last closed field line of the magnetosphereThe region of space dominated by the magnetic field of a star or planet. Earth’s magnetosphere takes on a tear-drop shape under the influence of the flowing solar wind. [[Glossary/magnetosphere]].

The data are available up to 30 to 60 minutes in the future, depending on the solar windplasma flowing out from the sun [[Glossary/ solar wind]] travel time from the ACEthe Advanced Composition Explorer (ACE) spacecraft is positioned on the Earth-Sun line and provides measurements of the solar wind plasma and radiation conditions that will impact Earth. [[Glossary/ACE]] spacecraft to the upstream simulation boundary at 33 RE.

Under quiet conditions the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] is 10 RE to 12 RE away from Earth. In dense solar windplasma flowing out from the sun [[Glossary/ solar wind]] or in the presence of a strong and negative solar windplasma flowing out from the sun [[Glossary/ solar wind]] magnetic field component Bz, the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] can move closer and even cross geosynchronous orbit (distance about 6.7 RE).

Uses

Forecast and monitor the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] boundary for close approaches to geosynchronous orbit.

Satellite operations may be modified while spacecraft are outside of the magnetosphereThe region of space dominated by the magnetic field of a star or planet. Earth’s magnetosphere takes on a tear-drop shape under the influence of the flowing solar wind. [[Glossary/magnetosphere]].

Examples

This example shows the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] at a normal distance from Earth. This example shows the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] close to Earth (compressed magnetopause). This example shows the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] extended to a distant location from Earth. In all of the examples a three day history of the most Sunward position of the mangetopause, the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] standoff position is provided on the left.

References and Credits

Shue J.H. et al, A new functional form to study the solar windplasma flowing out from the sun [[Glossary/ solar wind]] control of the magnetopauseboundary of the magnetosphere. Outside this boundary of the environment is dominated by interactions the solar wind magnetic field while inside it is primarily influenced by the Earth's magnetic field. [[Glossary/magnetopause]] size and shape, JGR, v102, pp9497-9511, May 1997.

Space Weather Modeling Framework page at CCMC

NOAA Space Weather Prediction Center


ACEthe Advanced Composition Explorer (ACE) spacecraft is positioned on the Earth-Sun line and provides measurements of the solar wind plasma and radiation conditions that will impact Earth. [[Glossary/ACE]] real time data from NOAA SWPC

SWMF/BATSRUS real time run at CCMC

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