I promised some information about the NASA news conference about our quiet sun. I sat in on the teleconference that was open to the media but there was little news for us weather fans. As a matter of fact… the NASA folks really did not want to answer any questions from the media on what imact this may have on our climate.
Here is the an article explaing everything they discussed…
LOS ANGELES (Reuters) – The sun’s winds are less blustery than they used to be, NASA said on Tuesday, revealing data from a solar probe that promises new insights about Earth’s local star but poses few if any consequences for humans — unless you’re an astronaut.
The data show the solar wind, a steady stream of charged sub-atomic particles emitted by the sun and blowing at 1 million mph (1.6 million kph), has dwindled to its lowest level in at least 50 years, reducing its strength as a shield against potentially harmful galactic cosmic radiation.
The solar wind inflates a massive protective bubble, called the heliosphere, around the solar system. But measurements from the spacecraft Ulysses show the wind’s pressure has dropped 20 percent since the mid-1990s. At the same time, the electron temperature of the solar wind has declined 13 percent.
As the solar wind weakens, the heliosphere is expected to dwindle in size and strength as well, allowing more cosmic radiation — super high-energy electrons and protons zipping through interstellar space — to reach the inner solar system.
Scientists studying the phenomenon insist Earth’s inhabitants have nothing to fear. Humans remain protected from cosmic rays by virtue of the magnetic field that surrounds Earth, acting as an inner barrier to our exposure.
A diminished solar wind and corresponding rise in cosmic rays are of concern, however, to astronauts who venture beyond Earth orbit to the moon, Mars or beyond, and to engineers who design trans-orbital spacecraft.
The biggest implications, however, are scientific ones.
Researchers say the findings open the door to a greater understanding of the sun and heliosphere by altering solar conditions in a way that allows scientists to conduct new comparative studies.
“The heliosphere is our laboratory,” said Nancy Crooker, a research professor at Boston University, in a conference call with reporters. “We know the sun has been this cool, this inactive before, but that was prior to the space age. So we didn’t have actual physical measurements until now of such periods.”
Ed Smith, NASA’s project scientist for Ulysses, said, “It’s an opportunity for us to study changes in the sun which will give us newer insights into the origin of the solar wind and its relation to the solar magnetic field.”
The weakening solar wind differs from the 11-year cycles of solar activity associated with such phenomena as sun spots and solar flares that can cause disruptions of electric power grids and radio transmissions on Earth, as well as auroral displays.
However, Dave McComas, a principal Ulysses investigator from the Southwest Research Institute in San Antonio, Texas, said continued diminishment of solar winds could dampen the impact of the next peak in other solar disturbances.
Ulysses, a joint project of NASA and the European Space Agency, was launched from the space shuttle Discovery in 1990 and became the first probe to fly around the sun’s poles.
After more than 17 years, the spacecraft named for the hero of “The Odyssey” has exceeded its original mission lifetime nearly fourfold but is expected to finally wind down in a month or two, scientists said
Our rain chances continue to look pretty good for Friday and Saturday and this will go along with a much cooler pattern that may turn chilly next week.
More on all that with my late night update so check back after the witching hour! ![]()
Thanks Chris for the interesting article about the sun. Here is a statement on communicatons problems at NWS Jackson:
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
ISSUED BY NATIONAL WEATHER SERVICE WILMINGTON OH
802 PM EDT TUE SEP 23 2008
…NATIONAL WEATHER SERVICE JACKSON KENTUCKY REMAINS WITHOUT
COMMUNICATION CAPABILITIES…
A TELECOMMUNICATION OUTAGE HAS RESULTED IN A LOSS OF COMMUNICATION
CAPABILITIES AT THE NATIONAL WEATHER SERVICE OFFICE JACKSON
KENTUCKY. THIS OUTAGE MAY EXTEND AS LONG AS 11 AM WEDNESDAY.
THE NATIONAL WEATHER SERVICE OFFICE IN WILMINGTON OHIO IS PROVIDING
FULL FORECAST AND WARNING RESPONSIBILITIES FOR EASTERN KENTUCKY. ALL
WEATHER RADIOS…EXCEPT IRVINE KENTUCKY…ARE STILL OPERATIONAL.
NOAA WEATHER RADIO IRVINE KENTUCKY…STATION WNG727…BROADCASTS ON
A FREQUENCY OF 162.475 MEGAHERTZ.
Thanks Mr Bailey
Wow i guess not all NWS outlets are created equal the stand in is actually predicting rain for this weekend
Thanks Chris…..The article is fascinating. I had hoped it would tell us what effect if any it had on the earth’s weather. You would think that kind of phenomenal occurrence would have some kind of effect.
I’ll continue to pray for rain!
I’ve heard that it does cause earth to trend cooler. Just google sun spots and alot of reading will come up.
KRinRichmond:
From what you said on your last post. I know I know. Ugh!
As of 9:10pm, the communication outage at NWS Jackson is over,
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