Eric Donovan, Pontus Brandt, David Sibeck, Jim Spann, and Mark Lester

GGO

Eric Donovan September 1, 2011

Eric Donovan, Pontus Brandt, David Sibeck, Jim Spann, and Mark Lester

The Great Geospace Observatory andSimultaneous Missions of Opportunity

2011 ILWS Science Workshop – Beijing China

“The overarching objective is to explore how solar variability affects the Earth environment in the short and long term. ILWS will explore physical processes in the sun-Earth system, focusing on those with planetary-scale effects and will quantify the geoefficiency of coupling processes.”

Hermann Opgenoorth, 2003.

GGO


The Great Geospace Observatory andSimultaneous Missions of Opportunity

ILWS should look for things that

1. would have a significant science and public impact.2. would ideally be achieved though true international cooperation.3. ILWS is ideally positioned to take the lead on.

We are coming up on the 10th anniversary of the founding of ILWS: what will be the legacy of ILWS?

GGO


System-level?●GeotailClusterTHEMISePOPRBSP & ERGMMSGOESLANL

Solar OrbiterStereoSOHO

SentinelPicard

Hinode●

Solar Probe

GGO


Clearly increasing desire to understand Geospace “at the system level” – expressed in decadal surveys, evolution of GEM/CEDAR, etc.

GGO


Clearly increasing desire to understand Geospace “at the system level” – expressed in decadal surveys, evolution of GEM/CEDAR, etc.

We have never imaged a storm.

GGO


GGO


From NASA 2009 Roadmap

GGO


GGO


System-level?●GeotailClusterTHEMISePOPRBSP & ERGMMSGOESLANL

GGO


The oceanographic community has their equivalent to Cluster, THEMIS, etc. Their system level view is achieved via imaging from space, weather monitoring, and programs like ARGO… The philosophy that drives ARGO is measure a few simple things at many locations.

GGO


GGO


GGO: global, simultaneous, long-term, 24/7, multi-scale.

precipitation, outflowconvection, windcurrents

Ionosphere-Thermosphere

magnetic fieldpressurereconnectionwaves

Magnetosphere

reconnection, plasma transport

Magnetosheath, Cusp

GGO: combined GB, in situ, space-based imaging.

GGO


Soft X-Rays

UV Aurora and ENA

GGO: Strawman Baseline Space Imaging Elements.

By itself, the view from GGO Space Imaging would rival that of the Sun provided by the fleet of solar imaging satellites, giving us a vision of planet Earth that would move geospace science to new heights and excite the public about our field.

GGO


monolithic multi-sat mission… $800M or more: difficult. it does not matter where the satellite is, but rather what it can see. UV aurora, soft X-rays, ENA best viewed from different

locations. each component could be accomplished for ~$50M as missions of

opportunity. could several agencies get together and sponsor simultaneous

missions of opportunity to accomplish GGO? requires an interagency sponsor: ILWS? spread $150-$200M cost among 3-4 national agencies. interestingly, this cheaper approach might yield a better outcome.

How could we accomplish GGO space imaging?….

GGO


be fundamentally new – revitalize geospace studies allow us to address a wide range of new problems provide a view comparable to our view of the Sun address geospace at the system level deliver what was envisioned for Ravens, KuaFu B, Ravens

Europe, Arctica, and other large proposed imaging missions. address e.g., NASA’s ONEP, DGC, CISR allow us to quantify system level effects of the processes we

study with missions like THEMIS, MMS, RBSP, ERG, etc.

The Great Geospace Observatory (GGO) would….

To do GGO… we need a new approach…. decide to do this (an international sponsor organization) use multiple simultaneous missions of opportunity

Eric Donovan, Pontus Brandt, David Sibeck, Jim Spann, and Mark Lester

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