Space Weather: Forecasting, Tracking, and the Effects of Earth Directed Solar Phenomena
This document provides an overview of space weather phenomena, their effects on Earth, and how they are forecasted and tracked. It describes various solar events like solar flares and coronal mass ejections that can impact Earth. These events are monitored using instruments in space. Models then use data to predict the speed and arrival of solar material. When events hit Earth, they can cause auroras, radiation storms, and issues for technologies. Continuous research improves understanding and forecasting of space weather, which is important as society increasingly relies on technologies affected by these solar events.
Introduction to space weather, its forecasting, tracking, and effects of solar phenomena on Earth.
Definition and description of solar flares, coronal mass ejections (CMEs), and solar wind, including their impacts and characteristics.
Various effects of space weather on Earth, including geomagnetic storms, radiation absorption, and realistic concerns for technology and health.
Increasing reliance on technology necessitates research in heliophysics and understanding space weather threats.
Methods for forecasting space weather, including monitoring solar activities, using modeling systems, and tracking solar wind parameters.
Details of tracking solar events, satellite data usage, and evidence of magnetic phenomena during solar wind interactions. Description of forecasting models like WSA-ENLIL and BATS-R-US used in predicting solar wind and related effects.
Summary of solar events' effects on Earth, emphasizing the need for monitoring and improved predictive capabilities.
Session for questions and a list of citations and references used in the presentation.
Phenomena
Anything powerful andEarth directed!
Events of interest to forecasters:
• Solar Flares
• Coronal Mass Ejections
• Ongoing Solar Wind
5.
o Explosive brighteningsin magnetically active regions in
chromosphere and corona
o Root cause of space weather
o highly energetic electromagnetic radiation
o solar energetic particles (SEPs)
o Often initiate CMEs
o Energy of several hydrogen bombs and temperature of sun's core!
Solar Flares
ZAPP!!
Photo from SDO 7/4/2012
6.
Coronal Mass Ejection(CME)
• Expulsions of large segments of outer corona
• Expand to be larger than sun itself
• Typical carries about a billion tons of plasma
• Typical speed 400 km per second
• 2-4 days to arrive at 1 AU
Photo: Sun Stroke NASA
7.
Solar Wind
• Ambientsolar wind always present,
slow or fast
• Fast streams usually originate at poles
and coronal holes
• Spiral towards Earth due to sun's
rotation (called The Parker Spiral)
• Fast and slow streams can interact
and cause compression and
rarefaction zones
Photos:
Solar Wind junkdrome.org
Schematic illustration of a fast stream interacting with a slow stream Hundhausen 1972
8.
Incoming!
• Preceding CMEmaterial
o SEPs and high speed electrons (MeV)
o x-ray, EUV, and radio wave radiation
• ICMEs (plasma from sun)
o Create shockwaves interacting with solar wind
o Magnetic structures – you shall see!
§ dynamic pressure sheath
§ magnetic clouds/flux ropes
• Varies every time
Photo from NASA
Earth’s Shield isUp
• Magnetosphere repels most charged matter
• Geomagnetic storms result from magnetic
reconnection
• Plasma particles from ICME (protons/electrons) held
in radiation belts
• Ionospheric O2 and N2 absorb far spectrum x-ray and
EUV radiation
• Stratospheric ozone absorbs UV radiation
13.
Results/Realistic Concerns
• AuroraBorealis! (and Australis)
• Compass fluxuations
• Expansion of thermosphere (atmospheric drag, ionization of
atmosphere)
• Single Event Upsets (SEU)
• cumlative radiation and astronaut safety
o Extra-vehicular activity for extended time
o Mars or other space travel out of magnetosphere
• Flight delays over poles
14.
Fund Us!
Our increasingdependence on microtechnology, satellite transmissions
and electronics will make the effects of space weather a greater threat to
our society and make heliophysics research of quintessential importance.
Forecasting- What atWhere?
Monitor sun for flares, CMEs, and SEP events
Measure parameters of events
Predict speed and direction of event based on sun’s magnetic field
27 day cycle forecast of solar conditions
Monitor solar wind and plasma parameters
density, velocity, B field orientation
Spacecraft ahead to anticipate arrival times
Monitor Magnetosphere and radiation belt conditions
Predict expected onset, intensity and duration of geomagnetic storm
17.
Programs and Facilities
NationalSpace Weather Program (NSWP)
interagency initiative to speed improvement of space weather services
partnership among academia, industry, and government
National Science Foundation
National Oceanic and Atmospheric Administration (NOAA)
Departments of Defence, Energy, Transportation, and Interior
Space Radiation Analysis Group (SRAG)
Johnson’s Space Center NASA
monitor space radiation environment for astronaut exposure
Track cumulative radiation
EVA planning
Space Weather Prediction Center (SWPC)
National Weather Service (NWS) and National Oceanic and Atmospheric Admin (NOAA)
occurrence of magnetic storms and auroral displays
18.
Space Weather Modeling
Hostedby Community Coordinated Modeling Center
(CCMC)
community access to modern space science simulations
situated at NASA Goddard Space Flight Center (GSFC)
slew of Agencies
The integrated Space Weather Analysis System (iSWA)
web-based dissemination system for NASA
combines forecasts and observational data
specify and forecast space environment’s and impacts for NASA missions
situated within CCMC
Magnetohydrodynamics (MHD) Codes used in Forecasting
Wang-Sheeley-Arge (WSA) model
ENLIL model
SWMF
19.
Solar Heliophysics Observatory
LASCOCMEs
solar wind
AIA solar
imager
stereoscopic
and “rear sun”
data
Images and Multimedia in Support of AGU 2011 Fall Briefing Dr. Daniel Baker
Event
• Detected bySDO AIA and
HMI imagery
• Region 1289
• 9/13 23:32-23:46
• (max at 23:33)
• Potential Field Source
Surface Model
• GOES spacecraft X-ray flux
SDO HMI at 235906
C
B
B
WSA-ENIL Forecast Model
PredictedUnremarkable Event
Wang-Sheeley-Arge (WSA)
• Nick Arge at Wright Patterson Air Force
Base
• Semi empirical - approximates the
outflow at the base of the solar wind
• Uses magnetogram data over solar
rotation
• Creates synoptic map
Enlil
• D. Odstrcil at University of Colorado
• 3D MHD numerical model
• Computes ambient solar wind outflow
Storm Predictions
• Earth-directed CME is measured in
coronagraph (speed, direction, and
size)
• "cone" representation is injected into
model
• basis for CME's arrival time at Earth, its
intensity, and its duration
Evidence of MagneticCloud/Flux Rope?
Zurbuchen & Richardson 2006
Dasso et al. 2006, 2007, Ruffenach et al. 2012
29.
ACE Solar WindData Time Plot Sept 16-19th
Magnetic Field (°)
Latitude/Longitude
Velocity (km/s)
Density (N/cm-3)
Temperature (K)
Magnetic Field Strength
(nT)
Total BT
Azimuthal BY
Distance BX
Elevation BZ
Shock
Dynamic
Pressure
Sheath
Magnetic
Cloud! End?
30.
ICME Hits Magnetosphere
GOESspacecraft at geosynchronous orbit
rotate with Earth (35786 km)
Major proton flux and electron emptying in radiation belts
Kp at high altitudes skyrocket
Kp Index
Electron Flux
Proton Flux
31.
Block-Adaptive-Tree-Solar wind-Roe-Upwind-Scheme (BATS-R-US)
Y-CutSWMF Magnetosphere
• Dr. Tamas Gombosi et al. At University of Michigan
• Models near-earth space environment (magnetosphere)
• 3D MHD Roe's Approximate Riemann Solver
• Input is solar wind plasma magnetic field measurement propagated from monitoring satellite's position
• Output is magnetospheric plasma parameters (density, pressure, velocity, magnetic field, electric currents) and ionospheric
parameters
• Backbone of Space Weather Modeling Framework
32.
Aurora
From Karen C.Fox at NASA Goddard Space Flight Center
Taken from international space station crossing over
southern Indian Ocean Sept 17th 12:22 to 12:45 ET
Auroral light Atmospheric Optics
What Causes an Aurora? Rachelle Oblack
33.
Summary
• Comes froma variety of large scale, earth directed events
• Radiation, particles, and magnetic fields from plasma, and
solar activity, affect earth’s atmosphere, space environment,
and technologies
• Ever increasing modeling, research, and instrumentation for
monitoring solar activity, have improved our ability to predict
and track solar phenomena’s propagation and effects on
earth
Citations and References
"CCMCHosted Models at a Glance." Community Coordinated Modeling Center. NASA Goddard Space Flight Center (GSFC), n.d.
Web. 31 July 2013. <http://ccmc.gsfc.nasa.gov/models/models_at_glance.php>.
"Details and graphs for CME0070." CACTUS A software package for 'Computer Aided CME Tracking'. Ed. Astronomy and
Astrophysics 425 (2004) and Astrophysical Journal 691 (2009). European Space Agency, 14 Sept. 2011. Web. 31
July 2013. <http://sidc.oma.be/cactus/catalog/LASCO/2_5_0/qkl/2011/09/CME0070/CME.html>.
Eddy, John A. The Sun, the Earth, and Near-earth Space: A Guide to the Sun-earth System. [Washington, D.C.]: National Aeronautics
and Space Administration, 2009. Print.
Solar Physics Group, Trinity College Dublin, and E-INIS, the Irish National e-Infrastructure. "14 September 2011."
SolarMonitor.org. N.p., 14 Sept. 2013. Web. 31 July 2013.
"MODELS AND COUPLING." CISM: Center for Integrated Space Weather Monitoring. National Science Foundation, n.d. Web. 31
July 2013. <http://www.bu.edu/cism/CISM_Thrusts/modelsandcoupling.html>.
NASA Goddard Space Weather Research Center, National Aeronautics and Space Administration Goddard Space Flight Center,
and SPENVIS - Space Environment, Effects, and Education System. "iNTEGRATED SPACE WEATHER ANALYSIS
SYSTEM." iNTEGRATED SPACE WEATHER ANALYSIS SYSTEM. Marlo Maddox, n.d. Web. 31 July 2013.
Richardson, Ian, and Hilary Cane. "Near-Earth Interplanetary Coronal Mass Ejections Since January 1996." THE ACE SCIENCE
CENTER. N.p., 16 July 2013. Web. 31 July 2013.
<http://www.srl.caltech.edu/ACE/ASC/DATA/level3/icmetable2.htm>.
<http://www.solarmonitor.org/index.php?date=20110914>.
Solar Physics Group, Trinity College Dublin, and E-INIS, the Irish National e-Infrastructure. ”17 September 2011."
SolarMonitor.org. N.p., 17 Sept. 2013. Web. 31 July 2013. http://www.solarmonitor.org/index.php?date=20110917.
Space Weather Prediction Center, comp. Space Weather Highlights 12 September - 18 September 2011. Rept. no. 1881. Boulder:
Space Weather Prediction Center, 2011. Print.
36.
Other Images
Radiation EffectsChildren of the Atomic Bomb: UCLA School of Medicine
Failed Russian Mars Probe Crashes into Pacific Ocean Michael Carroll
Sandy’s Blackouts Pressure Utilities to Bury Power Lines Tina Fineberg/AP Photo
Saints of the Apocalypse Matt Stewart
Sci Fi – Post Apocalyptic Wallpaper Alpha Coders
BLT 3/2 TRAP exercise vr033
Space and Space Travel News harsi
Day space on surface effects: Photo of the damaged transformer windings John Kappennman, Meta Tech.
4g phones disrupting gps webby
Prevalent Pipeline Repair Methods and Their Drawbacks Underground Solutions (UGSI)
Re: Is it time to start prepping Twinkies? majorhavoc
Stock Photo - empty wallet - woman with no money in purse shopping. Female shopper in clothes store upset crying as she is out of
money. Funny image of mixed race Caucasian / Asian woman. ariwasabi
Distress Signal Jajasoon