The Bt value is the strength of the Interplanetary magnetic field, the stronger the field the more magnetism, the more auroras.
What does bt mean aurora?
It arrives with a certain strength on Earth. ? To see bright Northern Lights you need the strength (Bt) to be positive. The stronger it gets, the more intense you will be able to see the aurora.
What is BT and BZ?
Bt/Bz (white/red lines) – Bt indicates the total strength of the Interplanetary Magnetic Field (IMF) carried by the solar wind. A higher number indicates a stronger impact to earth’s magnetic field. Bz indicates the orientation of the IMF.
What is a good BZ for aurora?
Although an Aurora can happen with a positive Bz, a negative Bz is generally better. A negative Bz helps the solar wind grab the earth’s magnetic field which can more easily lead to an Aurora. So a negative Bz is good.
What does BZ mean for aurora borealis?
The north-south direction of the interplanetary magnetic field (Bz) plays an important role in the formation of Northern Lights. When the north-south direction of IMF flips south, the magnetic field lines connect to the earth’s magnetosphere which faces north.
How high does KP have to be to see aurora?
5 or
If the Kp is 5 or greater, the better your chances of seeing an aurora. You can check out the SWPC Estimated Planetary Kp graph to see what has been happening during the past few days. The red bars indicate a Kp higher than 4, which makes your odds of seeing an aurora greater.
How do you read aurora alerts?
An aurora forecast is generally expressed using a number called a Kp index. The higher the index, the higher the geomagnetic activity is predicted to be. The geomagnetic activity creates the aurora, so, the higher the geomagnetic activity, the better the aurora is predicted to be!
What is the highest Kp index ever recorded?
Top 50 geomagnetic storms
| Kp max | ||
|---|---|---|
| 1 | 2003/10/29 | 9 |
| 2 | 2003/10/30 | 9 |
| 3 | 2000/07/15 | 9 |
| 4 | 2001/03/31 | 9- |
What is Kp index for aurora?
The average equatorward boundary of the midnight aurora is shown for levels of magnetic activity ranging from relatively low, Kp=3, to very high, Kp=9.
What is B sub z?
Earth’s magnetic field points north at the magnetopause. If the sun’s magnetic field points south — a condition scientists call “southward Bz” — then the sun’s magnetic field can partially cancel Earth’s magnetic field at the point of contact.
How hot are solar winds?
Space Environment
The solar wind is a stream of energized, charged particles, primarily electrons and protons, flowing outward from the Sun, through the solar system at speeds as high as 900 km/s and at a temperature of 1 million degrees (Celsius). It is made of plasma.
Are Northern Lights red?
Most Northern Lights are green in colour but sometimes you’ll see a hint of pink, and strong displays might also have red, violet and white colours, often seen by aurora chasers on Northern Lights trips. The reason for all these colours lies in the composition of our earth’s atmosphere.
Is 2022 a good year for Northern Lights?
“There will continue to be aurora viewing opportunities in 2022,” Steenburgh said. “The solar cycle is indeed ramping up and as solar activity increases, so do the chances for Earth-directed blobs of plasma, the coronal mass ejections, which drive the geomagnetic storms and aurora.”
Can you see Northern Lights with KP 3?
For example, with a KP 3, you’re very likely to see the Northern Lights in Iceland, but if you want to see the Northern Lights in England, the data says that you’ll need a KP 5 or higher. KP is just an indicator, but in most situations: KP 1 to 3: Auroras are usually quiet and faint.
What does KP 7 mean?
Strong storm
Kp 7 – Strong storm – Bright, dynamic and colourful aurorae. Visible in the southern sky. Aurora coronae very likely. Kp 8 – Severe storm – Bright, dynamic and colourful aurorae.
Can you predict Northern Lights?
As a naturally occurring phenomenon, the appearance of the Northern Lights is notoriously difficult to predict any further in advance than about two hours before it happens.
What is my Kp index?
The Kp index measures the global strength of a geomagnetic event. It goes from 0 to 9, respectively quiet and extreme storm.
Can you capture Northern Lights with phone?
It is possible to take a good Northern Lights photo with your Android or iPhone, using nothing more than the camera setting on your smartphone.
What does KP 0 mean?
no geomagnetic activity
Kp is a an index to represent the planetary geomagnetic activity. The name originates from “planetarische Kennziffer” (German for planetary index). It has 10 main levels, numbered from 0 (no geomagnetic activity) to 9 (extreme geomagnetic activity).
What does KP 5 mean?
Kp5 = Minor storm (G1) Kp6 = Moderate storm (G2) Kp7 = Strong storm (G3) Kp8 = Severe storm (G4) Kp9 = Extreme storm (G5)
What if Carrington event happened today?
A Carrington-like event today could wreak havoc on power grids, satellites and wireless communication. In 1972, a solar flare knocked out long-distance telephone lines in Illinois, for example. In 1989, a flare blacked out most of Quebec province, cutting power to roughly 6 million people for up to nine hours.