Solar Wind Conditions

Note: Information regarding Oct. 1995 Magnetic Cloud Event

Jump to Solar Wind Graphs:

Polar Cap Potential
IMF Bz
IMF By
IMF Intensity
Solar Wind Particle Density
Solar Wind Speed
Solar Wind Ram Pressure

Data Source

These data are derived from measurements taken by the WIND spacecraft's SWE and MFI experiments. This spacecraft is a component of the NASA/ESA International Solar Terrestrial Program (ISTP.)

The solar wind propagation delay time calculation used here is conceptually similar to the T(IMF) calculation in Kelly, et al., JGR 91, 5629, 1986.

Key

Day of Year is measured from the beginning of the year, with January 1 being Day 1.
Heavy black curves are recent WIND data.
Broken curves are predictions based on WIND data from one solar rotation period (approximately 27 days) before the time shown.
The small chunks of data at the most recent times are from data received from the latest telemetry passes and distributed as NRT data. The older continuous data are from key parameter data files. The plots are switched from NRT to Key Parameter data as soon as the Key Parameter data becomes available.

PRELIMINARY DATA - not for citation or scientific use

For information on this dataset, contact Drs. Ron Lepping and Keith Ogilvie at Goddard Space Flight Center

Interplanetary Magnetic Field Magnitude

Interplanetary Magnetic Field Y(GSM) Component

Interplanetary Magnetic Field Z(GSM) Component

Cross-Polar Cap Potential

See NASA's spacecraft trajectory plots for WIND trajectory information.

Note: Very high values of Solar Wind Speed, Solar Wind Pressure, IMF Magnitude and Bz, and Polar Cap Potential are likely indications that WIND has reentered the Earth's magnetosphere; such data is not indicative of solar wind conditions or impending severe geomagnetic disruption.

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