How to confirm solar wind's strength on Earth?

[oemSpace]

When solar wind hits the Earth, would following graphs be good enough to show how much the strength of solar wind affects on Earth? or is there another better items to show the strength?

Does anyone have any suggestions?

 

Thanks in advance for any suggestions

 

[Marcel de Bont]

Are you looking for something like this perhaps?

http://iswa.gsfc.nasa.gov/IswaSystemWebApp/iSWACygnetStreamer?timestamp=2038-01-23%2000:44:00&window=-1&cygnetId=40

[oemSpace]

Referring to following linked image, the speed is too quick, do you know how to slow down / pause the frame? the time frame is too quick, and I cannot read the details.

 

Do you have any suggestions?

 

Thanks you very much for any suggestions

 

 

[Marcel de Bont]

That is a .gif image, I don't know any simple ways to slow that down to be honest.

We do got NOAA's ENLIL model here on the site which you can pause, and look at frame-by-frame. http://www.spaceweatherlive.com/en/solar-activity/wsa-enlil

[oemSpace]

We do got NOAA's ENLIL model here on the site which you can pause, and look at frame-by-frame. http://www.spaceweatherlive.com/en/solar-activity/wsa-enlil

 

This model from your given link lacks of (R²N) planets and IMF information, as it shows on given gif image.

 

Do you have any suggestions on where to find (R²N) for planets and IMF informtion in text format?

 

Thanks you very much for any suggestions

[oemSpace]

Referring to following graph, it provides forecast on IMF in term of hour.

 

Do you have any suggestions on where to find the following data available in text format?

• IMF polarity, which locate on the circumference of the left graph.

Thanks you very much for any suggestions

 

 

[oemSpace]

Referring to following link,  I would like to know where to find data for Solar Wind Speed.
Does it have any scale to define the strength of Solar Wind Speed (km/s)? such as Extreme, High, Medium, Low.
 

Does anyone have any suggestions?

 

Thanks everyone very much for any suggestions
 

http://www.swpc.noaa.gov/ws/index.html

[Tim De Blanck]

Solar wind is normal when it is around 300km/s.

Less than 300 is low

600 km/s is high speed

900 km/s is very high

[oemSpace]

Thanks everyone very much for any suggestions
 

[oemSpace]

Referring to following link, when I look at Bt - Total strength, I would like to know what scale is defined for low, middle, high, extreme high in term of Bt.

 

Does anyone have any suggestions?

 

Thanks everyone very much for any suggestions :>

 

# Magnetometer values are in GSM coordinates.
#
# Units: Bx, By, Bz, Bt in nT

 

http://www.swpc.noaa.gov/ftpdir/lists/ace/20130901_ace_mag_1m.txt
 

[Marcel de Bont]

15nT is moderate, 25nT is strong. If you put your mouse on the Bt value here you will see that: http://www.spaceweatherlive.com/en/auroral-activity

[oemSpace]

Thanks everyone very much for suggestions

 

At 2225 on 1 Sept, ACE is still positive for IMF, but Bz is -1.8 nT (South) at 0005 on 2 Sep, I would like to know which format of result will be more common to be used for IMF's direction.

 

Bz is the real-time raw data, but ACE is real-time (9-hour-averaged) ACE IMF values.

 

I would like to know why they select 9-hour-averaged for ACE data instead of other periods-average.

 

 

Does anyone have any suggestions?

 

 

Thanks everyone very much for any suggestions :>

 

 

 

IMF Polarity Predictions:

 

The solid black line is the real-time (9-hour-averaged) ACE IMF values normalized to equal unit value. A positive (negative) polarity indicates that the IMF is directed radially outward (inward) from the Sun to the Earth. Each 9-hour interval of real-time ACE data corresponds to 9 individual (hourly averaged) values when there are no gaps in coverage. If two-thirds of the 9 values have positive (negative) sign, they are assigned a polarity of +1 (-1). If less than two-thirds are of a particular sign, that time interval is assigned a polarity of zero, implying mixed or indeterminate polarity.

[Vancanneyt Sander]

For Bz, we only use southward, northward expressions. Nothing more or less.

 

A 9-hour average is irrelevant in live forecasting, only latest readings count in determining the geomagnetic conditions. In the image you're refering to is indeed the 9-hour average to test the model on it. Why 9-hour average: because the direction of the IMF Always fluctuates and to determine the right polarity, a 9-hour average is calculated. The plot is used for forecasting/predicting the IMF polarity at Earth so we can better estimate the chances on geomagnetic storming but is irrelevant for historic data of the past x days.

[oemSpace]

Thanks everyone very much for suggestions :>