Home : Propagation : Sunspots
- Last 30 Days Solar Data - Display a table of last 30 days sunspots reports. Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center
- NASA Sunspot Cycle Predictions - Nasa MSFC predictions on the behavior of current sunspot cycle.
- Real time sunspots number - Space Weather: Real-Time 24hr Effective Sunspot Number
- Solar Region Data - SunSpots - Solar Region Data Current Regions with Sunspots Summary, an useful tool for predictions
- About Smoothed Sunspot Number
- The short history of the SSN Smoothed Sunspot Number at Luxorion
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- About Sunspot cycles
- Theory to explain solar cycles variability proposed by Jean-Pierre Desmoulins
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- Catania Observatory sunspots data
- Daily sun spots data collected by the Catania astrophysical observatory
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- Monitors the space weather parameters essential for HF radio, including SSN/SFI, Ap/Kp, X-ray/Proton flux, and Auroral activity. IonoProbe downloads near-real time satellite and ground station data, stores information for future use and displays it in a user-friendly way.
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- Last 30 Days Solar Data
- Display a table of last 30 days sunspots reports.
Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center
[ Hits: 7601 | Votes: 43 | Rating: 8.30 ]
- Maunder's Butterfly Diagram
- How to understand when a new solar cycle starts.
At the beginning of a new solar cycle, sunspots tend to form at high latitudes, but as the cycle reaches a maximum the spots form at lower latitudes.
[ Hits: 1184 | Votes: 3 | Rating: 8.33 ]
- NASA Sunspot Cycle Predictions
- Nasa MSFC predictions on the behavior of current sunspot cycle.
[ Hits: 7529 | Votes: 36 | Rating: 6.91 ]
- Predicted Sunspot Numbers and radio flux
- Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
[ Hits: 734 | Votes: 4 | Rating: 7.50 ]
- Real time sunspots number
- Space Weather: Real-Time 24hr Effective Sunspot Number
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- RWC Belgium
- World data center for the sunspot index
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- S marks the spot
- Forecasting powerful solar explosions several days in advance now be possible
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- Solar Flare and sunspots
- Understand the connection between solar flares and sunspots.
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- Solar Region Data - SunSpots
- Solar Region Data Current Regions with Sunspots Summary, an useful tool for predictions
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- Spotless days around solar cycle transition
- An interesting perspective of the transition from one solar cycle to another is given by exploring the days with no reported sunspots.
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- Sunspot activity by NASA
- Sunspot cycle closely following prediction by Science @ Nasa
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- Sunspot Number
- How sunspot numbers are computed
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- Sunspot numbers explained
- Definition of smoothed sunspot number and R12 index
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- Sunspots explained
- History, activity, glossary and modern reseach about suspots
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- The Sunspot Cycle
- Sunspot Numbers, The Butterfly Diagram, the Greenwich sunspot data and sunspot realted infos.
[ Hits: 1916 | Votes: 3 | Rating: 6.67 ]
- Understanding Solar Indices
- Comprehensive guide to understanding of solar indices, reading this article you will allow a better understanding and interpretation of propagation forecast bulletins and propagation reports
[ Hits: 1484 | Votes: 8 | Rating: 8.26 ]
Propagation : Sunspots
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Recent Links About Smoothed Sunspot Number Catania Observatory sunspots data Spotless days around solar cycle transition Predicted Sunspot Numbers and radio flux Maunder's Butterfly Diagram
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