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• Report
  Orr PR, Twigger-Ross CL, Kashefi E, Rathouse K, Haigh JDet al., 2011,

  Evaluation of ‘Experiment Earth?’ Public Dialogue on Geoengineering. A report to the Natural Environment 91��ɫ Council (NERC)

  , Publisher: Collingwood Environmental Planning Ltd, London
  • Cite
• Book chapter
  Forster PM, DWJ T, Baldwin MP, Chipperfield M, Dameris M, Haigh JD, KAroly DJ, Kushner PJ, Randel WJ, Rosenlof KH, Seidel DJ, Solomon Cet al., 2011,

  Stratospheric Changes and Climate

  , Scientific Assessment of Ozone Depletion: 2010, Geneva, Publisher: World Meteorological Organisation
  • Cite
• Journal article
  Gowen RA, Smith A, Fortes AD, Barber S, Brown P, Church P, Collinson G, Coates AJ, Collins G, Crawford IA, Dehant V, Chela-Flores J, Griffiths AD, Grindrod PM, Gurvitis LI, Hagermann A, Hussmann H, Jaumann R, Jones AP, Joy KH, Karatekin O, Miljkovic K, Palomba E, Pike WT, Prieto-Ballesteros O, Raulin F, Sephton MA, Sheridan S, Sims M, Storrie-Lombardi MC, Ambrosi R, Fielding J, Fraser G, Gao Y, Jones GH, Kargl G, Karl WJ, Macagnano A, Mukherjee A, Muller JP, Phipps A, Pullan D, Richter L, Sohl F, Snape J, Sykes J, Wells Net al., 2011,
  , ADV SPACE RES, Vol: 48, Pages: 725-742, ISSN: 0273-1177

  We present the scientific case for inclusion of penetrators into the Europan surface, and the candidate instruments which could significantly enhance the scientific return of the joint ESA/NASA Europa-Jupiter System Mission (EJSM). Moreover, a surface element would provide an exciting and inspirational mission highlight which would encourage public and political support for the mission.Whilst many of the EJSM science goals can be achieved from the proposed orbital platform, only surface elements can provide key exploration capabilities including direct chemical sampling and associated astrobiological material detection, and sensitive habitability determination. A targeted landing site of upwelled material could provide access to potential biological material originating from deep beneath the ice.Penetrators can also enable more capable geophysical investigations of Europa (and Ganymede) interior body structures, mineralogy, mechanical, magnetic, electrical and thermal properties. They would provide ground truth, not just for the orbital observations of Europa, but could also improve confidence of interpretation of observations of the other Jovian moons. Additionally, penetrators on both Europa and Ganymede, would allow valuable comparison of these worlds, and gather significant information relevant to future landed missions. The advocated low mass penetrators also offer a comparatively low cost method of achieving these important science goals.A payload of two penetrators is proposed to provide redundancy, and improve scientific return, including enhanced networked seismometer performance and diversity of sampled regions.We also describe the associated candidate instruments, penetrator system architecture, and technical challenges for such penetrators, and include their current status and future development plans.

  • Abstract
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• Journal article
  Mushtaq S, Pickering JC, Steers EBM, Horvath P, Whitby JA, Michler Jet al., 2011,
  , JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, Vol: 26, Pages: 1746-1755, ISSN: 0267-9477
  • Cite
  • Citations: 18
• Journal article
  Dunlop MW, Zhang Q-H, Bogdanova YV, Trattner KJ, Pu Z, Hasegawa H, Berchem J, Taylor MGGT, Volwerk M, Eastwood JP, Lavraud B, Shen C, Shi J-K, Wang J, Constantinescu D, Fazakerley AN, Frey H, Sibeck D, Escoubet P, Wild JA, Liu ZX, Carr Cet al., 2011,
  , ANNALES GEOPHYSICAE, Vol: 29, Pages: 1683-1697, ISSN: 0992-7689
  • Cite
  • Citations: 60
• Journal article
  Andrews DJ, Coates AJ, Cowley SWH, Dougherty MK, Lamy L, Provan G, Zarka Pet al., 2010,
  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 115, ISSN: 2169-9380
  • Cite
  • Citations: 89
• Journal article
  Burton ME, Dougherty MK, Russell CT, 2010,
  , GEOPHYSICAL RESEARCH LETTERS, Vol: 37, ISSN: 0094-8276
  • Cite
  • Citations: 86
• Journal article
  Simpson IR, Blackburn M, Haigh JD, Sparrow SNet al., 2010,
  , JOURNAL OF CLIMATE, Vol: 23, Pages: 6166-6185, ISSN: 0894-8755
  • Cite
  • Citations: 21
• Conference paper
  Magner T, Erd C, Pappalardo R, Blanc M, Bunce E, Clark K, Coustenis A, Dougherty M, Gavin T, Grasset O, Greeley R, Van Houten T, Lebreton JP, Prockter LM, Senske D, Sturm E, Titov Det al., 2010,

  The europa jupiter system mission (EJSM): Exploring the emergence of habitable worlds around gas giants

  , Pages: 10338-10350

  The Europa Jupiter System Mission (EJSM) would be an international mission with the overall theme of investigating the emergence of habitable worlds around gas giants. Its goals would be to (1) Explore Europa to investigate its habitability, (2) Characterize Ganymede as a planetary object including its potential habitability and (3) Explore the Jupiter system as an archetype for gas giants. NASA and ESA have concluded a detailed joint study of a mission to Europa, Ganymede, and the Jupiter system. The EJSM architecture consists of two primary elements operating in the Jovian system: the NASA-led Jupiter Europa Orbiter (JEO), and the ESA-led Jupiter Ganymede Orbiter (JGO). JEO and JGO would execute a choreographed exploration of the Jupiter System before settling into orbit around Europa and Ganymede, respectively. EJSM would directly address themes concerning the origin and evolution of icy satellite systems and water-rich environments therein. The potential habitability of the ocean-bearing moons Europa and Ganymede would be investigated, by characterizing the geophysical, compositional, geological, and external processes that affect these icy worlds. EJSM would also investigate Io and Callisto, small satellites and rings, Jupiter's atmosphere, and the Jovian magnetosphere. By better understanding the Jupiter system and unraveling its history, the formation and evolution of gas giant planets and their satellites would be better known. Most important, EJSM would shed new light on the potential for the emergence of life in our celestial neighborhood and beyond. The EJSM notional architecture provides opportunities for coordinated synergistic observations by JEO and JGO of the Jupiter and Ganymede magnetospheres, the volcanoes and torus of Io, the atmosphere of Jupiter, and comparative planetology of icy satellites. Each spacecraft would conduct both such synergistic dual-spacecraft investigations and also stand-alone measurements toward the overall mission theme and

  • Abstract
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• Journal article
  Krasnoselskikh V, Vekstein G, Hudson HS, Bale SD, Abbett WPet al., 2010,
  , ASTROPHYSICAL JOURNAL, Vol: 724, Pages: 1542-1550, ISSN: 0004-637X
  • Cite
  • Citations: 23
• Journal article
  Ruffoni MP, Pickering JC, 2010,
  , ASTROPHYSICAL JOURNAL, Vol: 725, Pages: 424-429, ISSN: 0004-637X
  • Cite
  • Citations: 7
• Journal article
  Sparks N, Toumi R, 2010,
  , ATMOSPHERIC ENVIRONMENT, Vol: 44, Pages: 5287-5294, ISSN: 1352-2310
  • Cite
  • Citations: 16
• Book chapter
  Haigh JD, 2010,

  Solar Variability and the Stratosphere

  , The Stratosphere: Dynamics, Transport and Chemistry, Editors: Polvani, Sobel, Waugh, Washington, DC, Publisher: American Geophysical Union, Pages: 173-187, ISBN: 9780875904795
  • Cite
• Journal article
  Moore L, Mueller-Wodarg I, Galand M, Kliore A, Mendillo Met al., 2010,
  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 115, ISSN: 2169-9380
  • Cite
  • Citations: 23
• Journal article
  Voulgarakis A, Shindell DT, 2010,
  , JOURNAL OF CLIMATE, Vol: 23, Pages: 6068-6073, ISSN: 0894-8755
  • Cite
  • Citations: 7
• Journal article
  Carbary JF, Achilleos N, Arridge CS, Khurana KK, Dougherty MKet al., 2010,
  , GEOPHYSICAL RESEARCH LETTERS, Vol: 37, ISSN: 0094-8276
  • Cite
  • Citations: 12
• Journal article
  Gray LJ, Beer J, Geller M, Haigh JD, Lockwood M, Matthes K, Cubasch U, Fleitmann D, Harrison G, Hood L, Luterbacher J, Meehl GA, Shindell D, van Geel B, White Wet al., 2010,
  , REVIEWS OF GEOPHYSICS, Vol: 48, ISSN: 8755-1209
  • Cite
  • Citations: 1026
• Patent
  Carr CM, 2010,

  91��ɫ College MRMAG Magnetoresistive Magnetometer: License for commercial exploitation by Satellite Services Ltd.

  , N/A

  This license concerns the magnetometer instrument known as ‘MRMAG’ developed by the Space & Atmospheric Physics group (SPAT) of 91��ɫ College. The magnetometer is a sensitive instrument for the measurement of magnetic fields. Under this license, Satellite Services is granted exclusive rights to market the magnetometer for satellite on-board attitude determination.

  • Abstract
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• Journal article
  Jackman CM, Arridge CS, Slavin JA, Milan SE, Lamy L, Dougherty MK, Coates AJet al., 2010,
  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 115, ISSN: 2169-9380
  • Cite
  • Citations: 36
• Journal article
  Edberg NJT, Wahlund J-E, Agren K, Morooka MW, Modolo R, Bertucci C, Dougherty MKet al., 2010,
  , GEOPHYSICAL RESEARCH LETTERS, Vol: 37, ISSN: 0094-8276
  • Cite
  • Citations: 44
• Journal article
  Liu Y, Thernisien A, Luhmann JG, Vourlidas A, Davies JA, Lin RP, Bale SDet al., 2010,
  , ASTROPHYSICAL JOURNAL, Vol: 722, Pages: 1762-1777, ISSN: 0004-637X
  • Cite
  • Citations: 131
• Journal article
  Bunce EJ, Cowley SWH, Talboys DL, Dougherty MK, Lamy L, Kurth WS, Schippers P, Cecconi B, Zarka P, Arridge CS, Coates AJet al., 2010,
  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 115, ISSN: 2169-9380
  • Cite
  • Citations: 27
• Journal article
  Wei HY, Russell CT, Dougherty MK, Neubauer FM, Ma YJet al., 2010,
  , JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 115, ISSN: 2169-9097
  • Cite
  • Citations: 20
• Journal article
  Haigh JD, Winning AR, Toumi R, Harder JWet al., 2010,
  , NATURE, Vol: 467, Pages: 696-699, ISSN: 0028-0836
  • Cite
  • Citations: 198
• Journal article
  Matteini L, Landi S, Del Zanna L, Velli M, Hellinger Pet al., 2010,
  , Geophysical 91��ɫ Letters, Vol: 37, ISSN: 0094-8276

  <jats:p>The parametric instability of a monochromatic shear Alfvén wave in oblique propagation with respect the ambient magnetic field is investigated in a kinetic regime, performing one‐dimensional (1‐D) and two‐dimensional (2‐D) hybrid simulations. The parallel component of the mother wave is found to be subject to a parametric decay which excites an ion‐acoustic wave along the magnetic field and a backward propagating daughter shear Alfvén wave, as in the instability for a purely parallel mother wave. At the same time, the acoustic wave generation supports the acceleration of a velocity beam in the ion distribution function, due to the non‐linear trapping of protons. Moreover, the instability leads to the generation of broad band oblique spectra of coupled Alfvénic and compressive modes with variable perpendicular wavevectors, and, as a consequence, the magnetic field after saturation is characterized by a strong transverse modulation.</jats:p>

  • Abstract
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• Journal article
  Petrosyan A, Balogh A, Goldstein ML, Leorat J, Marsch E, Petrovay K, Roberts B, von Steiger R, Vial JCet al., 2010,
  , SPACE SCIENCE REVIEWS, Vol: 156, Pages: 135-238, ISSN: 0038-6308
  • Cite
  • Citations: 59
• Journal article
  Sigsbee K, Kletzing CA, Pickett JS, Gurnett DA, Schwartz SJ, Lefebvre B, Lucek E, Fazakerley AN, Kucharek Het al., 2010,
  , Journal of Geophysical 91��ɫ (Space Physics), Vol: 115, Pages: A10251-A10251
  • Cite
• Journal article
  Simon S, Wennmacher A, Neubauer FM, Bertucci CL, Kriegel H, Russell CT, Dougherty MKet al., 2010,
  , PLANETARY AND SPACE SCIENCE, Vol: 58, Pages: 1625-1635, ISSN: 0032-0633
  • Cite
  • Citations: 23
• Journal article
  Rodriguez-Martinez M, Blanco-Cano X, Russell CT, Leisner JS, Wilson RJ, Dougherty MKet al., 2010,
  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 115, ISSN: 2169-9380
  • Cite
  • Citations: 15
• Journal article
  Wicks RT, Horbury TS, Chen CHK, Schekochihin AAet al., 2010,
  , Monthly Notices of the Royal Astronomical Society, Vol: 407, Pages: L31-L35, ISSN: 0035-8711

  We measure the power and spectral index anisotropy of magnetic field fluctuations in fast solar wind turbulence from scales larger than the outer scale down to the ion gyroscale, thus covering the entire inertial range. We show that the power and spectral indices above the outer scale of turbulence are approximately isotropic. The turbulent cascade causes the power anisotropy at smaller scales manifested by anisotropic scalings of the spectrum: close to k−5/3 across and k−2 along the local magnetic field, consistent with a critically balanced Alfvénic turbulence. By using data at different radial distances from the Sun and calculating the radial dependence of the ratio of the outer scale to the ion gyroscale, we show that the width of the inertial range does not change with heliocentric distance. At the smallest scales of the inertial range, close to the ion gyroscale, we find an enhancement of power parallel to the magnetic field direction coincident with a decrease in the perpendicular power. This is most likely related to energy injection by ion kinetic modes such as the firehose instability and also marks the beginning of the kinetic range, sometimes called the dissipation range, of solar wind turbulence.

  • Abstract
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