11 space weather – geomagnetic storm impacts bob rutledge noaa space weather prediction center...
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Space Weather – Geomagnetic Storm Impacts
Bob RutledgeNOAA Space Weather Prediction Center
Boulder, ColoradoNovember 8th, 2012
Hydro Quebec Site Visit
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Outline
The Sun/Solar Cycle Sequence of Events Phenomena/Impacts Potential NERC Changes Product Improvements Measurements/Observations Update
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33Magnetosphere
Energetic Charged Particles
ElectromagneticRadiation
What is space weather?Space weather refers to the variable conditions on the Sun and in
the space environment that can influence the performance and reliability of space and ground based technological systems, as
well as endanger human health.
Ionosphere
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The Sun at Solar Maximum
Sunspots and the Solar Cycle
~27 day full rotation
The Sun Today
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Solar Cycle Predictions• Cycle 23 began in May 1996 • Peak in April 2000 with SSN = 120• Solar Minimum in December 2008• Solar Cycle 24 Underway
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Sm
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the
d S
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Sunspot Solar Cycles
2317161514 21201918 22
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1859 Storm 1921 Storm
• Large geomagnetic storms can occur with smaller cycles
• The largest geomagnetic storms on record occurred during smaller than average cycles (no causality implied)
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July 2012 CME
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Sequence of Events
Conditions are Favorable for Activity
(Probabilistic Forecasts)
EventOccurs
Coronal Observations
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Analysis and Prediction
ACE Observation
Event Onset/Ground-Based Observation
Sequence of Events
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http://www.swpc.noaa.gov/NOAAscales/
Radio Blackouts
Radiation Storms
Geomagnetic Storms
NOAA Space Weather Scales
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Radio Blackouts (R Scale)
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Solar Radiation Storm (S Scale)
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Geomagnetic Storms (G Scale)
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Event-Driven Product Definitions
– Watches; The conditions are favorable for occurrence– Warnings; disturbances that are imminent, expected in the near
future with high probability– Alerts; observed conditions meeting or exceeding thresholds
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• Arrival: 8 minutes, photons• Duration: Minutes to 3 hours• Daylight-side impacts• Probabilistic 1, 2, 3-day forecasts• Alerts for exceeding R2 (only)• Summary messages post-event
Solar Flares (Radio Blackouts – R Scale)
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6-7 March 2012: “Severe impact at 2249Z initially affecting CWP [Central West Pacific] but by 2400Z, impact peaked and was affecting all communications. 25 ATC messages were delayed.”
- Air Traffic Communications
7 March 2012: INCERFA was issued for Air Canada 003 (Vancouver to Tokyo) until communications were established with the flight.
(INCERFA is issued when there is uncertainty as to the safety of an aircraft and its occupants.)
March 2012Impacts on Aviation Comms
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Solar Flare (Radio Burst) Impact on GPS – 6 Dec 2006
~10 mins
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Solar Radiation Storms (S Scale)
• Arrival: 10’s of minutes to several hours
• Duration: hours to days• Short-term warnings pre-
onset• Alert for threshold crossing• Summary post-event
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Energy/Emergency Management Challenges
"UPDATE 1 03/07/2012 @ 0943 EST - LightSquared is currently experiencing a satellite network outage over our SkyTerra 1 satellite. Preliminary investigation reveals that a solar event has created an automatic system safeguard as a measure to protect the satellite. The recovery procedures are underway which could take from 4 to 24 hours. As soon as we know more, we will provide you with updates. Ground communication with the satellite is intact. Engineers, along with partners at Boeing and Telesat are engaged in resolving the issue. We will provide additional updates as the situation progresses.“
"UPDATE 9 03/09/2012 @ 0945 hours EST: - Per the previous communication LightSquared continues to work the key procedures to restore Skyterra 1 to service. Based on LightSquared's current progress they now estimate that they will return customers to service by 1200 EST (1600 UTC) on Sunday. LightSquared understands that this is a significant extension of the previous timeline estimate. However there are technical reasons why the schedule has been adjusted. LightSquared understands that this delay of the previous timeline will cause concern for customers and end users. However, the level of commands involved in the overall restoral procedure have taken longer than originally anticipated. The overall restoral procedure required a fundamental reboot of Skyterra 1"
Should emergency managers in Florida be worried about this storm?
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Geomagnetic Storms (G Scale)
• Coronal Mass Ejections (CMEs) create geomagnetic storms
• Arrival: ~18 – 96 hours• Duration: Hours to a day or two• Creates ionospheric storms,
geomagnetically induced currents, aurora
• 1-2 Day watch products based on coronagraph observations and modeling (Highest Expected K)
• Short-term (15 -60 min) warnings based on measurement at ACE spacecraft
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• Intense geomagnetic and ionosphere storms occur on 29 and 30 Oct, 2003
• Acceptable vertical error limits were exceeded for 15 and 11-hour periods
GPS IMPACT – U.S. Federal Aviation Administration (FAA)Wide Area Augmentation System (WAAS)
ME
TE
RS
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Impacts on Electric Power Grid
• CME impacts Earth’s magnetic field
• Fluctuations generate electric fields on Earth. These geomagnetically induced currents (GIC) can flow into power lines and transformers
• Leads to transformer saturation and over-heating, voltage drops, transformer damage, or protective device trips
Transformer exit-lead overheating
Transformer winding failure
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High Impact/Low Frequency Threat…
…but is it a 100 year storm…200 year…?
Media Release: Loss of Reactive Power, Voltage Instability Most Likely Outcome from GMD, NERC Report Finds February 29, 2012 ATLANTA – Loss of reactive power is the most likely outcome from a severe solar storm centered over North America, a report released by the North American Electric Reliability Corporation (NERC) finds. Significant losses of reactive power could lead to voltage instability and, if not identified and managed appropriately, power system voltage collapse could occur…..
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Revise alert/warning procedures in support of national grid
• Initiate telecon with RCs through NERC Bulk Power System Awareness group for
K8-9 storms
• Potential Changes: Warnings issued directly to 16
Reliability Coordinators (RC)? NERC Hotline at SWPC?
North American Electric Reliability Corp. Meeting in Boulder, Oct 2012
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• New products:o Regional geomag specification
and prediction (geospace)o Site/location specific Induced
Electric Field (statistics initially, nowcast in the near future)
• Partnering with USGS• Access to key measurements at
grid locations (EPRI and Sunburst)
NOAA working with partners to improve services
USGS Conductivity
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Product Developments• Website overhaul underway
– New look and feel, modern content management system– More user-friendly, updated content
• Updated forecast products – Two forecasts per day with option for out-of-cycle, activity-driven
updates – Forecast discussion with plain-language synopsis and explanation of
rationale
• Auroral model transition to operations (Ovation Prime)• Continued improvement of geomagnetic storm products
showing better nowcasts of regional disturbance information
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– NASA/GSFC refurbishes with NOAA funding– NOAA ($30.1M funded FY12)
• NESDIS operations, data processing, archive, calibration/validation
• NWS/SWPC forecasts & warnings– Air Force launch ($134.5M funded FY12)– Launch in 2014
DSCOVR
Deep Space Climate Observatory (DSCOVR)
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Visions of the Future…Sailing on sunlight!
Sunjammer Solar Sail TechnologyDemonstration Mission (TDM)
• NASA mission to prove the viability and value of the solar sail technology (launch ~2015)
• NOAA working with NASA and other partners exploring options for solar wind measurements
• Roughly doubling lead time from ACE for Sunjammer, but you can go beyond that…
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NOAA Space Weather Prediction CenterBoulder, Colorado
www.spaceweather.gov