Kp index. K 2019-11-13

Aurora Forecast

Kp index

Even during low geomagnetic activity, the aurora often dances in the sky at these latitudes. Streams of charged particles that produce the aurora come from the corona, the outermost layer of the sun's atmosphere. This is why Tasmania and New Zealand commonly see the southern lights while other continents do not. Each individual, three-hourly Kp index is converted to an equivalent amplitude three-hourly a kp index, and the average of eight, three-hourly a kp indices is calculated to produce the 24 hour Ap index. The K-index The K-index is a code that is related to the maximum fluctuations of horizontal components observed on a magnetometer relative to a quiet day, during a three-hour interval.

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What is the KP Aurora Index?

Kp index

So the dark of the moon in March is the best time of year to travel to the auroral zone since the yearly cycle of auroral activity also peaks around the equinox. You typically need more powerful storms corresponding to a Kp of minimum 5 to start seeing some aurora on the horizon at lower geomagnetic latitudes in the sub-auroral zone. These phenomena may be sunspots, coronal mass ejection, filaments, or a prominence. In order to reduce the amount of data that our customers have to deal with we convert the magnetometer data into three-hourly indices which give a quantitative, but less detailed measure of the level of geomagnetic activity. Since there is more oxygen at high altitudes, the red aurora tends to be on top of the regular green aurora. It is actually centered around the , which are different from the geographic poles.

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K

Kp index

You can also reach us at 303-497-3204. A more modern text is The Physics of Space Plasmas, 1991, by George Parks. Clear skies are a requirement, so you should try to choose a location and a season that is blessed with the clearest skies. What makes the colors of the aurora? Very intense aurora often has a purple rim at the bottom. Those will give you about an hour notice to get ready. What is the altitude of the aurora? Red aurorae and coronae very likely. Solar phenomena on the surface of the sun distribute high speed plasmas that often result in increased auroral activity on earth.

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Kp

Kp index

Other irregular current systems produce magnetic field changes caused by the interaction of the solar wind with the magnetosphere, by the magnetosphere itself, by the interactions between the magnetosphere and ionosphere, and by the itself. Sunspot activity, and hence auroral activity, tends to peak every 11 years. This is about the altitude at which the International Space Station flies. Another item of interest is that the location of the aurora usually changes geomagnetic latitude as the intensity of the geomagnetic storm changes. So look on the map, have a look which line and which corresponding kp number are on top of or just above your location.

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Kaiser Permanente

Kp index

The principal users affected by geomagnetic storms are the electrical power grid, spacecraft operations, users of radio signals that reflect off of or pass through the ionosphere, and observers of the aurora. When the Kp reaches one of these thresholds for a period of three hours, it may lead to the effects noted under each box. The Kp-index is calculated by combining the data from multiple magnetic observatories around the world to determine the global planetary index. Magnetometer stackplot What Kp strength do you need to view Northern Lights where you are? It is not a plot map where you can definitely say auroras will be visible. The ultimate energy source for the aurora is the solar wind. Additionally, auroras are closely associated with geomagnetic storms which are marked from G1 to G5. Can you hear the aurora? The K-index quantifies disturbances in the horizontal component of earth's magnetic field with an integer in the range 0-9 with 1 being calm and 5 or more indicating a geomagnetic storm.

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Sign On

Kp index

This table allows you to see what Kp level is typically required see aurora borealis where you are in the event of high geomagnetic activity. The solar wind takes approximately three days to get to the earth on its way from the sun. The ‘excited’ electron can then ‘de-excite’ and return back to its initial, lower energy state, but in the process it releases a photon a light particle. As the electrons from the solar wind penetrate into the upper atmosphere, the chance of colliding with an atom or molecule increases the deeper into the atmosphere they go. The rays are actually hundreds of miles long and perspective makes them appear to converge.

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Kaiser Permanente

Kp index

Cameras have different sensitivities to colors than the human eye, therefore there is often more red aurora in photos than you can see with the unaided eye. Anything Kp 5 and above is classified as a geomagnetic storm. Everything you need to know about the Kp number system and viewing auroras at lower latitudes The most important thing to know about aurora watching is the kp index. The number of sunspots on the Sun's surface changes on a fairly regular cycle, which scientists refer to as the sun's 11-year cycle variation. I plotted 360 coordinate points in each hemisphere. The chances of seeing the aurora at lower latitudes increase when the sunspot cycle is at a maximum, but chances at higher latitudes are not as dependent on the solar maximum because the auroral oval is normally present. Remember this number, it will never change well the magnetic poles are moving slowly each year so you may need to review it again in about 20 years.

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Geomagnetic kp and ap Indices

Kp index

This 27 day rotation is called a Carrington Rotation. Visible in the southern sky. For specific information on accommodations, tour companies, etc. Where does the Kp index come from? Get ready in the field as soon as it gets dark or at least hours before these events are set to strike. Keep yourself updated on current and upcoming space weather to anticipate potential events. The official Kp index is derived by calculating a weighted average of K-indices from a predetermined network of geomagnetic observatories, the official Kp network.

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NASA

Kp index

And so on and so forth. The auroral zone corresponds to high geomagnetic latitudes where the aurora is the most frequent. Corona The aurora may appear as rays shooting out in all directions from a single point in the sky. In either case, the travel time to Earth for such material leaving the sun is 1 to 3 days. But many people claim that they hear something at the same time when there is aurora in the sky. These 3 components are the most important components of the solar wind when it comes to Aurora Borealis.

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