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[Articles Home]  [Add Article]  

Real-Time Magnetosphere Simulation:

Tomas - NW7US (NW7US) on May 8, 2010
Website: http://prop.hfradio.org/
View comments about this article!

The Simulation Team, Space Environment Group at the Applied Electromagnetic Research Center of the National Institute of Information and Communications Technology (NICT) in Japan conduct research on numerical space weather forecasting. By using a supercomputer system, this computer power and cutting-edge numerical techniques enable them to simulate dynamic processes in the earth's magnetosphere.

NICT has achieved real-time simulation of the magnetospheric response to the solar wind. This research is beginning to reveal clues to understand when and how magnetospheric disturbances occur and evolve.

The real-time magnetosphere simulation is carried out using code developed by Prof. Tanaka. Input parameters are taken from the real-time solar wind and interplanetary magnetic field data observed routinely by the ACE satellite. Simulation results are visualized in real time.

Numerical simulations provide one of the most powerful tools in revealing dynamic phenomena in the space environment. Their success in reproducing a real-time response in the magnetosphere is the first step toward realization of the numerical space weather forecast system.

By express permission from NICT, http://prop.hfradio.org now includes resources from this real-time magnetospheric and ionospheric simulation. Please check out the new resources:

http://prop.hfradio.org

Here are sample images (live):

Real-time Magnetosphere Simulation - 
Pressure View - Copyright@NICT

Real-time Magnetosphere Simulation - 
Magnetic Field View - Copyright@NICT

73 de NW7US - Tomas David Hood

Member Comments:
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Real-Time Magnetosphere Simulation:  
by QRZDXR2 on May 9, 2010 Mail this to a friend!
Outstanding....

I dont' think many hams know what your talking about .. however.. as they know little or none of how the magnetosphere works or cause our radios to go the distance.

I have for years believed that this is the real reasion for global warming or cooling...basicly our weather is part of the magnetosphere's influence.

I also have my reservations about how we stay in orb around the sun.. similar to a inductive motor.. coupled by the magnetoshere from both the sun and earth relationship... otherwise the solar wind would push us out into the deep cold space as it emitted energy is much more than any mass attraction.

Now if they can just go back and see how mars changed through the years as the sun also changed size... (6 miles bigger this year than last. Geee ya wonder why it was hotter on earth.. oh ya al gore and our CO caused it to grow and GET CLOSER)

but the research on mars with the rovers has given us a lot to think about as it may become the way earth will go.. no matter what us humans do...

thanks again for the great info...

A true ham not only knows how his radio works but trys to understand how it propagats and understanding of why things are physically responsive. Something the new hams seem to have missed when they get their license... instead too busy flapping their lips on the bands. SADDLY we have lot or quest for science and understanding and replaced it in the ham bands with no nothing pickle pushers
 
Real-Time Magnetosphere Simulation:  
by KC9KXT on May 10, 2010 Mail this to a friend!
Great article, I have studied the magnetosphere and its properties and effects on radio since grade school and can say that this article is dead on. I am a relative new ham and have found that alot of us 'new hams' have a very good grasp on the effects of the magnetosphere and the sun on radio and propagation. We also have a grasp on proper english and the spelling thereof, unlike above. Please try to proof read your responses before chastising us 'new hams'.
 
RE: Real-Time Magnetosphere Simulation:  
by NW7US on May 14, 2010 Mail this to a friend!
I am uncertain as to the validity of your statement that the sun is bigger this year than last. Here is an interesting article about this very topic:

http://news.softpedia.com/news/Sun-s-Size-Surprisingly-Constant-142011.shtml

-- From that article, quote: --

Statistical analysis of the star reveal the fact that its diameter, for example, changed by less than one part per million over the past dozen years or so. The Sun is some 932,057 miles (1,500,000 kilometers) across today, and its size is basically the same as it was during the previous solar cycle. "The Sun is remarkably constant. We're measuring that the diameter changes by less than a kilometer (0.62 miles). This constancy is baffling, given the violence of the changes we see every day on the sun's surface and the fluctuations that take place over an 11-year solar cycle," explains University of Hawaii Institute for Astronomy associate director Jeff Kuhn, who was also the lead researcher on the investigation.

-- end of quote --

Of course, since (in my opinion) the sun is variable and dynamic, and since it is much older than our recorded scientific history, how can we make any verdict on the nature of the sun? If we have only scientifically observed it for less than 300 years ( out of the millions/billions of years it has been in existence ), and with any real precision, only in the last few decades, how can we extrapolate anything onto the ancient past, or for the matter claim we have a handle on the Sun's inner workings?

It is rather arrogant of mankind to say "we know this and that for SURE about the sun". We might have opinions, but they are subject to new facts, as can be realized by reading recent press releases coming from certain "official" heliophiles.

We only have started to scratch the surface of knowledge about the sun, and, our knowledge is about the CURRENT sun, not about the nature of it over millions of years' time.

So, saying, "the sun's size has not changed in dozens of years" is not a reliable fact. Too short of time to know if the sun's size stays consistent.

But at the same time, saying that the sun is bigger this year than last year is completely insignificant and has no significance to the idea of some global warming or cooling. That issue is much more complex than such simplistic generalizations. Further, just like we have no idea how the Sun really works (in the perspective of billions of years' time), we cannot claim to have unravelled the mystery of the Sun-Earth connection as it relates to the environment.

What we CAN know about, and ever better as our science improves, is the current real-time events and activity of the Sun, space weather, and the Earth. We also may come up with approximations and models that help us forecast... yet I cannot believe that we will ever have a reliable forecasting system since the Sun is vastly more chaotic and beyond direct observable access than, say, terrestrial weather patterns. Yes, our models will get "better" ... but not to the point, I think, where we can predict a sunspot region to develop in the next two weeks at a given location on the solar corona.

Back to the magnetosphere simulation - - *this* model we can accurately duplicate since it is directly observable and can be recreated in the "lab". And, that is pretty cool.

73 de NW7US, Propagation Column Editor, CQ Magazine/Popular Communications Magazine, CQ VHF Quarterly.

http://prop.hfradio.org/
 
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