Solar wind — December 21, 2021

December 21, 2021

London change region

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Solar wind parameters

Solar wind speed

600 km/s high (average for 24 hours)

Solar wind speed for December 20 and 21, 2021, according to data from the ACE spacecraft Solar wind speed for December 20 and 21, 2021.

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Solar wind density

1.1 cm^-3 normal (average for 24 hours)

Solar wind density for December 20 and 21, 2021, according to data from the ACE spacecraft Solar wind density for December 20 and 21, 2021.

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Solar wind temperature

213 000 K high (average for 24 hours)

Solar wind temperature for December 20 and 21, 2021, according to data from the ACE spacecraft Solar wind temperature for December 20 and 21, 2021.

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Solar wind magnetic field induction

4.7 nT normal (average for 24 hours)

Solar wind magnetic field induction for December 20 and 21, 2021, according to data from the ACE spacecraft Solar wind magnetic field induction for December 20 and 21, 2021.

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The Bz component of the solar wind magnetic field

+0.7 nT positive (average for 24 hours)

The Bz component of the solar wind magnetic field for December 20 and 21, 2021, according to data from the ACE spacecraft. A negative, blue Bz value (southern direction of the field) promotes the development of magnetic storms and northern lights. The Bz component of the solar wind magnetic field for December 20 and 21, 2021.

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