Abstract

Space weather refers to conditions on the Sun and in the space environment that can impact the performance and reliability of space-borne and ground-based technological systems, and may perhaps even influence our climate. Space weather takes the form of episodic mass ejections from the Sun, sporadic bursts of energetic particles and photons associated with solar flares, and intermittent high speed streams of magnetized solar-wind plasma that buffet the Earth’s magnetosphere and induce the geomagnetic storms that produce our beautiful aurorae.

Superposed on this short-term variability are several long-term (decades, centuries, millennia, …) trends: notably, the fluctuation of the solar irradiance across long and short wavelengths that directly affects the planet’s energy budget, and the modulation of the flux of galactic cosmic rays. In this presentation, I will review the facts, take a critical look at the current literature and draw some sobering, and possibly provocative, conclusions on how little progress has actually been achieved since Langley and Abbot unfurled the banner of the sun-climate connection over a century ago.

The security procedures to all interested non-NOAA attendees  for entry into WWB are: You need to give your name, affiliation, and phone #  to the security at the front desk when you arrive.  You need to have a valid photo ID upon entry.  Moreover,  you need to be accompanied during your stay here. I am sorry for the inconvenience.  It may help to make a printout of this announcement and show to the guards for your purpose of visit when u come. If u are interested in giving a seminar at CPC, or for further information, please call (301-763-8000 ext. 7546) or email me (Muthuvel.Chelliah@noaa.gov).

Directions from Washington Beltway 495: Take exit 7B (Branch Ave), make a right at first signal, and the building is immediately on your left.