geomagnetic and ionospheric data from the swarm mission ... · swarm mission and will be of highest...

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 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


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


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


•  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


SUA

SSA SWE – SUA


Ø http://swe.ssa.esa.int/web/guest/gfz-sua-federated

SSA SWE – SUA


Swarm

Ø  SSA SWE SUA Prototype Service •  Processing chain

Swarm Orbit Distribution – 1 Day


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


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


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


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


Kp = 111

Ksii=1

11

∑

NowcastKpIndex


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


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!

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