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The EISCAT_3D Science Case: Current Status

This document outlines the current status and strategic plans for EISCAT 3D, a sophisticated research radar system. It covers the ongoing engagement with new and existing users, targeted user workshops, and the collection of scientific requirements. The science case is being revised to accommodate new findings in atmospheric science, space weather, and more. Key capabilities include advanced volumetric imaging, flexibility, and sensitivity, with a strong emphasis on real-time data processing and intelligent scheduling for enhanced scientific outcomes.

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The EISCAT_3D Science Case: Current Status

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  1. The EISCAT_3D Science Case:Current Status Ian McCrea STFC RAL

  2. Preparatory Phase WP3: Science Case Work Package • Engaging with potential new users • Holding targeted workshops • Gathering requirements for new science • Revising/developing the science case • Feeding science demands back to radar design • Issuing periodic versions of science case, consistent with the PSD

  3. The Science Working Group • Convenors: Anita Aikio, Ian McCrea • 5-10 members at any time • Mix of existing and new EISCAT users • Membership rotates annually • Cover a wide range of science topics • Atmospheric science, space weather, modelling... • Two meetings with each committee, email exchanges in between

  4. Timetable of Activities • Current WG members: Mark Clilverd, Markus Rapp, Yasonobu Ogawa, KjellmarOksavik, AstaPellinen-Wannberg. • First Meeting: FMI Helsinki 14/1/2011 (also KirstiKauristie and PekkaVerronen) • Second Meeting: Uppsala 17/5/2011 (also Stephan Buchert and Thomas Leyser) • First version of the science case due in Month 9 (July) • Next roll of WG: Space Weather and Modelling • Annual reports each year • Final version of case in month 48

  5. Key Capabilities • The most sophisticated research radar ever! • Five key capabilities: • Volumetric imaging and tracking • Aperture Synthesis imaging • Multistatic, multi-beam configuration • Greatly improved sensitivity • Transmitter flexibility • These abilities never before combined in a single radar

  6. Volumetric Imaging • Image a broad three-dimensional field-of-view • Quasi-simultaneous horizontal structure (as well as vertical) • Rapid scanning or post beam-forming

  7. Aperture Synthesis Imaging • Imaging concept already developed by UiT on the ESR system • Extended to a modular array for EISCAT_3D type array and demonstrated at Jicamarca

  8. Multi-static, Multi-beam... ”Adjusted Double Mercedes” • N-S drift in E-region • E-W drift in F-region

  9. Improved Flexibility and Sensitivity • Large, fully digital aperture • Very flexible transmitter • State-of-the-art digital processing

  10. Flexible Experiments • Continuous, unattended operations • Multiple, interleaved experiments • Intelligent scheduling • www.eiscat3d.se/drupal/content/vision-eiscat3d

  11. Structure of the Science Case • Executive Summary • Introduction to EISCAT_3D • The Science Case: • Atmospheric physics and global change • Space and plasma physics • Solar system science • Space weather and service applications • Radar techniques, coding and analysis

  12. Atmospheric Section • Background • Dynamical coupling in the atmosphere • Solar-terrestrial effects on atmospheric chemistry • Dynamical and chemical coupling in the mesosphere • Atmospheric turbulence in the stratosphere and troposphere • Short and long-term change in the upper atmosphere

  13. Space Weather and Service Applications:Topics Covered • Space debris monitoring • Effects of thermospheric density changes • Ionospheric monitoring for communications, GPS TEC, scintillations • Data assimilation for improvements in modelling • Support for geospace science missions (e.g. SWARM)

  14. Space Weather and Service Applications:Key Issues • Validation of space debris models • Data assimilation into propagation and TEC models • Potential for improvements in forecast capabilities • Real-time predictions and status reports, community needs? • Using flexible observation philosophy forspace weather products

  15. Radar techniques, coding and analysis:Topics covered • Multi-purpose codes • Optimise duty cycle, number of beams • Aperiodic codes • Arbitrary phase transmission • Amplitude control • Lag profile inversion • Optimise DSP and computing

  16. Radar techniques, coding and analysis:Planned Activities • “Handbook” to develop full theory of measurement principles for phased arrays • Use of LOFAR as an open technology platform • Development of intelligent scheduling, decision-making • Data handling techniques for very large data sets • Contribute to e-infrastructure development for the space weather community

  17. Hand over to Anita......

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