geomagnetic and ionospheric data from the swarm mission ... · swarm mission and will be of highest...
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Geomagnetic and Ionospheric data from the Swarm Mission for the ESA’s SSA SWE Service Network
Guram N. Kervalishvili, Claudia Stolle, Jan Rauberg, Jürgen Matzka, Stefanie Weege, and Mirjam Langhans GFZ German Research Centre For Geosciences, Potsdam, Germany
Nils Olsen and Susanne Vennerstrøm DTU Space, Kongens Lyngby, Denmark
Magnar Gullikstad Johnsen and Chris Hall Tromsø Geophysical Observatory (TGO), Tromsø, Norway
ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium
Swarm Mission
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 2 of 15
• ESA’s first constellation mission for Earth Observation (EO) • operated by ESA's European Space Operations Centre (ESOC in Germany)
via the primary ground station in Kiruna (Sweden)
• consists of the three identical satellites (A, B, and C), which were launched on 22 November 2013 into a near-polar orbit
• final constellation of the mission was achieved on 17 April 2014. Lower pair (Swarm A and C) flying side by side at about 470 km altitude, Swarm B at about 520 km altitude
Copyright: ESA/ATG Medialab
Ø ESA Member States approved (172nd meeting on 15-16 Nov 2017) Swarm extension until the end of 2021 Ø Swarm celebrated its 4th anniversary in space: 22 Now 2017
More information about Swarm mission can be found at https://earth.esa.int/web/guest/missions/esa-operational-eo-missions/swarm
Swarm Payload
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 3 of 15
Ø Absolut Scalar Magnetometer (ASM) Ø Vector Field Magnetometer (VFM) Ø Accelerometer (ACC)
Ø GPS Receiver (GPSR) and Laser Reflector Ø Electric Field Instrument (EFI) Ø Star Tracker (STR)
Flight Direction
Ø Swarm provides key observables of space weather: precise magnetic field variations, ionospheric plasma drift, electron density, thermospheric density, GPS-derived total electron content, and ionospheric currents and irregularities
Ø Recommendations from 4th Swarm Science Meeting (March 2017): “We unanimously recommend that ESA ... supports science topics that are beyond the initial Swarm mission objectives, including space physics and space weather research, ... investigates opportunities for near real-time data provision for space weather applications“
Ø Swarm Utilisation Analysis (SUA) project evaluates the space weather capabilities of the
Swarm mission and will be of highest relevance for other, as well as for the future Low Earth orbiting (LEO) missions with similar instrumentation
Ø SUA Consortium: Nine European institutions
Swarm also a Space Weather Mission
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 4 of 15
Ø SUA is a project of the ESA’s SSA SWE framework: P2-SWE-XVI-SUA Ø Candidate products for SSA SWE • Nine existing Swarm data products • Eleven new Swarm data product ideas
Ø Five existing Swarm and two new products (based on Swarm data) are currently implemented
into the ESA’s SSA SWE portal: • Swarm TEC - Total Electron Content • Swarm Ne - Electron Density • Swarm IBI - Ionospheric Bubble Index • Swarm FAC - Field-Aligned Current • Swarm MAG - Vector Magnetic Field
Ø Within the SUA study two new Swam products ROT and PEJ have been developed
by GFZ and DTU Space, respectively
SSA SWE – SUA
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 5 of 15
• Swarm ROT - Rate Of change of TEC • Swarm PEJ - Polar Electrojet
Ø SSA SWE Expert Service Centres (ESCs) • ESC Solar Weather • ESC Space Radiation • ESC Ionospheric Weather • ESC Geomagnetic Conditions • ESC Heliospheric Weather
Ø Swarm SWE products can be accessed through the following web pages (SSO authentication): • http://swe.ssa.esa.int/ionospheric-weather • http://swe.ssa.esa.int/geomagnetic-conditions • http://swe.gfz-potsdam.de
Ø SUA ESC Geomagnetic Conditions products Ø SUA ESC Ionospheric Weather products
SSA SWE – SUA
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 6 of 15
SUA
SSA SWE – SUA
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 7 of 15
Ø http://swe.ssa.esa.int/web/guest/gfz-sua-federated
SSA SWE – SUA
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 8 of 15
Swarm
Ø SSA SWE SUA Prototype Service • Processing chain
Swarm Orbit Distribution – 1 Day
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 9 of 15
q 24 h
q 45 min
Ø The ESA EO-funded Swarm DISC consortium with a project office at DTU Space: identifies implements, produces and dissimilates new scientific products for enhancing the scientific return of the Swarm mission
Ø The first Swarm DISC round for new products and services in the time frame from 2017 to 2018: relevant for Space Weather applications
• Auroral Electrojet and auroral Boundaries estimated from Swarm observations (Swarm-AEBS) • Climatological model of the polar ionospheric current systems • Ionospheric Plasma IRregularities and fluctuations based on Swarm data (IPIR)
More information about these and other activities can be found at http://www.space.dtu.dk/english/research/projects/project-descriptions/swarm/swarm_disc_itts and https://earth.esa.int/web/guest/missions/esa-eo-missions/swarm/activities/scientific-projects
Space Weather Related Swarm Activities Outside SSA SWE
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 10 of 15
Ø SSA SWE Expert Service Centres (ESCs) • ESC Solar Weather • ESC Space Radiation • ESC Ionospheric Weather • ESC Geomagnetic Conditions • ESC Heliospheric Weather
SSA SWE – Kp Index
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 11 of 15
Geomagnetic disturbances Ø Monitored by ground-based magnetic
observatories recording the three magnetic field components
Local K, Ks indices Ø The maximum value of the disturbance
levels in the horizontal field components Ø Observed at 13 selected, subauroral
stations Ø Standardized Ks index for each station
Global Kp index Ø Kp is the average of a number of Kp-
stations’ Ks values
GlobalKpIndex
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 12 of 15
K è Ks è Kp
Global Kp index Ø Kp is the average of a number of Kp-
stations’ Ks values:
Ø 11 original Kp-stations: BFE+UPS and CNB+EYR are combined
More information about Kp index can be found at https://www.gfz-potsdam.de/en/section/geomagnetism/data-products-services/kp-index/
GlobalKpIndex
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 13 of 15
Kp = 111
Ksii=1
11
∑
NowcastKpIndex
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 14 of 15
Nowcast Kp Index Ø Taking into account all available data:
at 13 selected subauroral stations
Ø Levels of geomagnetic activity: • Green – low • Yellow – intermediate • Red – high
Ø How it could look today: e.g. at about 12:12 pm
EGUGeneralAssembly2018
Guram Kervalishvili ESWW14, 27 Nov – 1 Dec 2017, Ostend, Belgium Page 15 of 15
ST4 – Space Weather and Space Climate Abstract submission: Ø http://meetingorganizer.copernicus.org/EGU2018/session/27200
The abstract submission deadline is 10 January 2018, 13:00 CET
Thank you very much!