Express Viewer. The label K comes from the German word Kennziffer meaning "characteristic digit". It uses data gathered by APRS-IS. 3.3. By correlating hops with the position at each end of the hop, distances can be inferred.

The planetary 3-hour-range index Kp is the mean standardized K-index from 13 geomagnetic observatories between 44 degrees and 60 degrees northern or southern geomagnetic latitude. However, the final Kp variation curve is a stack of the curves of thousands of earthquakes. This planetary index is de- 5- is 4 2/3, 5 is 5 and 5+ is 5 1/3. Print version (zones) ... For the benefit of those users who need to relate to the Kp index, we provide the following equivalences, which apply to all three of the zones used in our forecasts. Data from GFZ Potsdam (Kp-index from 1932-present) and NOAA NCEI (AA-index converted to Kpa from 1868-1931) Sunspot numbers from WDC-SILSO, Royal Observatory of Belgium, Brussels. Kp and Kpa — planetary 3-hourly indices of geomagnetic activity. The scale is O to 9 expressed in thirds of a unit, e.g. Solar Indices: Solar Flux A K Kp Index As the radiation from the Sun is the major influence on the ionosphere, solar indices including the solar flux, A index, Ap index, K index and the Kp index are all important in predicting the state of the ionosphere and HF ionospheric radio propagation. It is designed for use on phones and tablets and works with built-in GPS. The index ranges from 0-9 where 0 means there’s very little geomagnetic activity taking place, whereas 9 translates to intense geomagnetic storming. UAV Forecast combines weather forecasts, visible GPS satellites, and solar flare (Kp) activity, to produce a comprehensive report and forecast of flying conditions for Unmanned Aerial Vehicles.

Interactive Mapping : Department and Project-Specific Viewers : Viewer for Mobile Devices. The Kp index is a scale of 0-9 that represents the level of solar activity. The KP Index is a global geomagnetic activity scale that determines the earth’s magnetic field strength, based on 3 hour measurement intervals done from ground-based magnetometers centers. Hourly Aurora Forecast.

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.It is derived from the maximum fluctuations of horizontal components observed on a magnetometer during a three-hour interval. Planetary Kp Index. NGØE's VHF Propagation Map displays current VHF band openings during the past hour.