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• Journal article
  Jackman CM, Slavin JA, Kivelson MG, Southwood DJ, Achilleos N, Thomsen MF, DiBraccio GA, Eastwood JP, Freeman MP, Dougherty MK, Vogt MFet al., 2014,

  Saturn's dynamic magnetotail: A comprehensive magnetic field and plasma survey of plasmoids and traveling compression regions and their role in global magnetospheric dynamics

  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 5465-5494, ISSN: 2169-9380
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  • Citations: 61
• Journal article
  Selzer LA, Hnat B, Osman KT, Nakariakov VM, Eastwood JP, Burgess Det al., 2014,

  TEMPERATURE ANISOTROPY IN THE PRESENCE OF ULTRA LOW FREQUENCY WAVES IN THE TERRESTRIAL FORESHOCK

  , ASTROPHYSICAL JOURNAL LETTERS, Vol: 788, ISSN: 2041-8205
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  • Citations: 4
• Journal article
  Miller RL, Schmidt GA, Nazarenko LS, Tausnev N, Bauer SE, DelGenio AD, Kelley M, Lo KK, Ruedy R, Shindell DT, Aleinov I, Bauer M, Bleck R, Canuto V, Chen Y, Cheng Y, Clune TL, Faluvegi G, Hansen JE, Healy RJ, Kiang NY, Koch D, Lacis AA, LeGrande AN, Lerner J, Menon S, Oinas V, Garcia-Pando CP, Perlwitz JP, Puma MJ, Rind D, Romanou A, Russell GL, Sato M, Sun S, Tsigaridis K, Unger N, Voulgarakis A, Yao M-S, Zhang Jet al., 2014,

  CMIP5 historical simulations (1850-2012) with GISS ModelE2

  , JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS, Vol: 6, Pages: 441-477
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  • Citations: 119
• Journal article
  Marlier ME, Voulgarakis A, Shindell DT, Faluvegi G, Henry CL, Randerson JTet al., 2014,

  The role of temporal evolution in modeling atmospheric emissions from tropical fires

  , ATMOSPHERIC ENVIRONMENT, Vol: 89, Pages: 158-168, ISSN: 1352-2310
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  • Citations: 10
• Journal article
  Hietala H, Eastwood JP, Isavnin A, 2014,

  Sequentially released tilted flux ropes in the Earth's magnetotail

  , PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 56, ISSN: 0741-3335
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  • Citations: 16
• Journal article
  Nichols JD, Badman SV, Baines KH, Brown RH, Bunce EJ, Clarke JT, Cowley SWH, Crary FJ, Dougherty MK, Gerard J-C, Grocott A, Grodent D, Kurth WS, Melin H, Mitchell DG, Pryor WR, Stallard TSet al., 2014,

  Dynamic auroral storms on Saturn as observed by the Hubble Space Telescope

  , Geophysical Research Letters, Vol: 41, Pages: 3323-3330, ISSN: 1944-8007

  We present observations of significant dynamics within two UV auroral storms observedon Saturn using the Hubble Space Telescope in April/May 2013. Specifically, we discuss bursts of auroralemission observed at the poleward boundary of a solar wind-induced auroral storm, propagating at ∼330%rigid corotation from near ∼01 h LT toward ∼08 h LT. We suggest that these are indicative of ongoing, burstyreconnection of lobe flux in the magnetotail, providing strong evidence that Saturn’s auroral storms arecaused by large-scale flux closure. We also discuss the later evolution of a similar storm and show that theemission maps to the trailing region of an energetic neutral atom enhancement. We thus identify the auroralform with the upward field-aligned continuity currents flowing into the associated partial ring current.

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• Journal article
  Simon S, Saur J, van Treeck SC, Kriegel H, Dougherty MKet al., 2014,

  Discontinuities in the magnetic field near Enceladus

  , GEOPHYSICAL RESEARCH LETTERS, Vol: 41, Pages: 3359-3366, ISSN: 0094-8276
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  • Citations: 12
• Journal article
  Bunce EJ, Grodent DC, Jinks SL, Andrews DJ, Badman SV, Coates AJ, Cowley SWH, Dougherty MK, Kurth WS, Mitchell DG, Provan Get al., 2014,

  Cassini nightside observations of the oscillatory motion of Saturn's northern auroral oval

  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 3528-3543, ISSN: 2169-9380
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  • Citations: 16
• Journal article
  Ansell C, Brindley HE, Pradhan Y, Saunders Ret al., 2014,

  Mineral dust aerosol net direct radiative effect during GERBILS field campaign period derived from SEVIRI and GERB

  , JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, Vol: 119, Pages: 4070-4086, ISSN: 2169-897X
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  • Citations: 14
• Journal article
  Goldman MV, Newman DL, Lapenta G, Andersson L, Gosling JT, Eriksson S, Markidis S, Eastwood JP, Ergun Ret al., 2014,

  Cerenkov Emission of Quasiparallel Whistlers by Fast Electron Phase-Space Holes during Magnetic Reconnection

  , PHYSICAL REVIEW LETTERS, Vol: 112, ISSN: 0031-9007
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  • Citations: 45
• Journal article
  Pilkington NM, Achilleos N, Arridge CS, Masters A, Sergis N, Coates AJ, Dougherty MKet al., 2014,

  Polar confinement of Saturn's magnetosphere revealed by in situ Cassini observations

  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 2858-2875, ISSN: 2169-9380
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  • Citations: 20
• Journal article
  Kriegel H, Simon S, Meier P, Motschmann U, Saur J, Wennmacher A, Strobel DF, Dougherty MKet al., 2014,

  Ion densities and magnetic signatures of dust pickup at Enceladus

  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 2740-2774, ISSN: 2169-9380
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  • Citations: 36
• Journal article
  Shen C, Yang YY, Rong ZJ, Li X, Dunlop M, Carr CM, Liu ZX, Baker DN, Chen ZQ, Ji Y, Zeng Get al., 2014,

  Direct calculation of the ring current distribution and magnetic structure seen by Cluster during geomagnetic storms

  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 2458-2465, ISSN: 2169-9380
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  • Citations: 24
• Journal article
  Messori G, Czaja A, 2014,

  Some considerations on the spectral features of meridional heat transport by transient eddies

  , QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 140, Pages: 1377-1386, ISSN: 0035-9009
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  • Citations: 5
• Journal article
  Masters A, Fujimoto M, Hasegawa H, Russell CT, Coates AJ, Dougherty MKet al., 2014,

  Can magnetopause reconnection drive Saturn's magnetosphere?

  , GEOPHYSICAL RESEARCH LETTERS, Vol: 41, Pages: 1862-1868, ISSN: 0094-8276
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  • Citations: 22
• Journal article
  Meredith CJ, Alexeev II, Badman SV, Belenkaya ES, Cowley SWH, Dougherty MK, Kalegaev VV, Lewis GR, Nichols JDet al., 2014,

  Saturn's dayside ultraviolet auroras: Evidence for morphological dependence on the direction of the upstream interplanetary magnetic field

  , Journal of Geophysical Research: Space Physics, Vol: 119, Pages: 1994-2008, ISSN: 2169-9402

  We examine a unique data set from seven Hubble Space Telescope (HST) “visits” that imagedSaturn’s northern dayside ultraviolet emissions exhibiting usual circumpolar “auroral oval” morphologies,during which Cassini measured the interplanetary magnetic field (IMF) upstream of Saturn’s bow shock overintervals of several hours. The auroras generally consist of a dawn arc extending toward noon centered near~15° colatitude, together with intermittent patchy forms at ~10° colatitude and poleward thereof, locatedbetween noon and dusk. The dawn arc is a persistent feature, but exhibits variations in position, width, andintensity, which have no clear relationship with the concurrent IMF. However, the patchy postnoon aurorasare found to relate to the (suitably lagged and averaged) IMF Bz, being present during all four visits withpositive Bz and absent during all three visits with negative Bz. The most continuous such forms occur in thecase of strongest positive Bz. These results suggest that the postnoon forms are associated with reconnectionand open flux production at Saturn’s magnetopause, related to the similarly interpreted bifurcated auroral arcstructures previously observed in this local time sector in Cassini Ultraviolet Imaging Spectrograph data,whose details remain unresolved in these HST images. One of the intervals with negative IMF Bz howeverexhibits a prenoon patch of very high latitude emission extending poleward of the dawn arc to the magnetic/spin pole, suggestive of the occurrence of lobe reconnection. Overall, these data provide evidence ofsignificant IMF dependence in the morphology of Saturn’s dayside auroras.

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• Journal article
  Jasinski JM, Arridge CS, Lamy L, Leisner JS, Thomsen MF, Mitchell DG, Coates AJ, Radioti A, Jones GH, Roussos E, Krupp N, Grodent D, Dougherty MK, Waite JHet al., 2014,

  Cusp observation at Saturn's high-latitude magnetosphere by the Cassini spacecraft

  , Geophysical Research Letters, Vol: 41, Pages: 1382-1388, ISSN: 1944-8007

  We report on the first analysis of magnetospheric cusp observations at Saturn by multiple insitu instruments onboard the Cassini spacecraft. Using this we infer the process of reconnection wasoccurring at Saturn’s magnetopause. This agrees with remote observations that showed the associatedauroral signatures of reconnection. Cassini crossed the northern cusp around noon local time along apoleward trajectory. The spacecraft observed ion energy-latitude dispersions—a characteristic signature ofthe terrestrial cusp. This ion dispersion is “stepped,” which shows that the reconnection is pulsed. The ionenergy-pitch angle dispersions suggest that the field-aligned distance from the cusp to the reconnectionsite varies between ∼27 and 51 RS. An intensification of lower frequencies of the Saturn kilometricradiation emissions suggests the prior arrival of a solar wind shock front, compressing the magnetosphereand providing more favorable conditions for magnetopause reconnection.

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• Journal article
  Mistry R, Dougherty MK, Masters A, Sulaiman AH, Allen EJet al., 2014,

  Separating drivers of Saturnian magnetopause motion

  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 1514-1522, ISSN: 2169-9380
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  • Citations: 5
• Journal article
  Simon S, Neubauer FM, Wennmacher A, Dougherty MKet al., 2014,

  Variability of Titan's induced magnetotail: Cassini magnetometer observations

  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 2024-2037, ISSN: 2169-9380
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  • Citations: 7
• Journal article
  Schmidt GA, Kelley M, Nazarenko L, Ruedy R, Russell GL, Aleinov I, Bauer M, Bauer SE, Bhat MK, Bleck R, Canuto V, Chen Y-H, Cheng Y, Clune TL, Del Genio A, de Fainchtein R, Faluvegi G, Hansen JE, Healy RJ, Kiang NY, Koch D, Lacis AA, LeGrande AN, Lerner J, Lo KK, Matthews EE, Menon S, Miller RL, Oinas V, Oloso AO, Perlwitz JP, Puma MJ, Putman WM, Rind D, Romanou A, Sato M, Shindell DT, Sun S, Syed RA, Tausnev N, Tsigaridis K, Unger N, Voulgarakis A, Yao M-S, Zhang Jet al., 2014,

  Configuration and assessment of the GISS ModelE2 contributions to the CMIP5 archive

  , JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS, Vol: 6, Pages: 141-184
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  • Citations: 461
• Journal article
  Andriopoulou M, Roussos E, Krupp N, Paranicas C, Thomsen M, Krimigis S, Dougherty MK, Glassmeier K-Het al., 2014,

  Spatial and temporal dependence of the convective electric field in Saturn's inner magnetosphere

  , ICARUS, Vol: 229, Pages: 57-70, ISSN: 0019-1035
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  • Citations: 33
• Journal article
  Alconcel LNS, Fox P, Brown P, Oddy TM, Lucek EL, Carr CMet al., 2014,

  An initial investigation of the long-term trends in the fluxgate magnetometer (FGM) calibration parameters on the four Cluster spacecraft

  , GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS, Vol: 4, Pages: 43-84, ISSN: 2193-0856
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• Journal article
  Sheldon L, Czaja A, 2014,

  Seasonal and interannual variability of an index of deep atmospheric convection over western boundary currents

  , QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 140, Pages: 22-30, ISSN: 0035-9009
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  • Citations: 16
• Journal article
  Masters A, Phan TD, Badman SV, Hasegawa H, Fujimoto M, Russell CT, Coates AJ, Dougherty MKet al., 2014,

  The plasma depletion layer in Saturn's magnetosheath

  , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 121-130, ISSN: 2169-9380
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  • Citations: 13
• Journal article
  O'Connor FM, Johnson CE, Morgenstern O, Abraham NL, Braesicke P, Dalvi M, Folberth GA, Sanderson MG, Telford PJ, Voulgarakis A, Young PJ, Zeng G, Collins WJ, Pyle JAet al., 2014,

  Evaluation of the new UKCA climate-composition model - Part 2: The Troposphere

  , GEOSCIENTIFIC MODEL DEVELOPMENT, Vol: 7, Pages: 41-91, ISSN: 1991-959X
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  • Citations: 134
• Journal article
  Nakamura R, Plaschke F, Teubenbacher R, Giner L, Baumjohann W, Magnes W, Steller M, Torbert RB, Vaith H, Chutter M, Fornacon K-H, Glassmeier K-H, Carr Cet al., 2014,

  Interinstrument calibration using magnetic field data from the flux-gate magnetometer (FGM) and electron drift instrument (EDI) onboard Cluster

  , GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS, Vol: 3, Pages: 1-11, ISSN: 2193-0856
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  • Citations: 12
• Journal article
  Eastwood JP, Phan TD, Oieroset M, Shay MA, Malakit K, Swisdak M, Drake JF, Masters Aet al., 2013,

  Influence of asymmetries and guide fields on the magnetic reconnection diffusion region in collisionless space plasmas

  , PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 55, ISSN: 0741-3335
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  • Citations: 39
• Journal article
  Masters A, Stawarz L, Fujimoto M, Schwartz SJ, Sergis N, Thomsen MF, Retino A, Hasegawa H, Zieger B, Lewis GR, Coates AJ, Canu P, Dougherty MKet al., 2013,

  In situ observations of high-Mach number collisionless shocks in space plasmas

  , PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 55, ISSN: 0741-3335
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  • Citations: 7
• Journal article
  Pudney MA, Carr CM, Schwartz SJ, Howarth SIet al., 2013,

  Near-magnetic-field scaling for verification of spacecraft equipment

  , Geoscientific Instrumentation, Methods and Data Systems, Vol: 2, Pages: 249-255, ISSN: 2193-0864

  Magnetic-field measurements are essential tothe success of many scientific space missions. Outside ofthe earth’s magnetic field the biggest potential source ofmagnetic-field contamination of these measurements is emittedby the spacecraft. Spacecraft magnetic cleanliness is enforcedthrough the application of strict ground verificationrequirements for spacecraft equipment and instruments. Dueto increasingly strict AC magnetic-field requirements, manyspacecraft units cannot be verified on the ground using existingtechniques. These measurements must instead be takenclose to the equipment under test (EUT) and then extrapolated.A traditional dipole power law of −3 (with a fieldfall-off proportional to r−3) cannot be applied at these closedistances without risk of underestimating the field emitted bythe EUT, but we demonstrate that a power law of −2 is tooconservative. We propose a compromise that uses a powerlaw of −2 up to a distance equal to 3 times the unit size, beyondwhich a dipole power law can be applied. When extrapolatingfrom a distance of 0.20 m to 1.00 m from the centre ofa 0.20 m wide EUT, we demonstrate that this method avoidsan under prediction of the field, and is at least twice as accurateas performing the extrapolation with a fixed power lawof −2.

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• Journal article
  Heaviside C, Czaja A, 2013,

  Deconstructing the Hadley cell heat transport

  , QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 139, Pages: 2181-2189, ISSN: 0035-9009
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  • Citations: 21

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