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Journal articleYver CE, Graven HD, Lucas DD, et al., 2013,
Evaluating transport in the WRF model along the California coast
, ATMOSPHERIC CHEMISTRY AND PHYSICS, Vol: 13, Pages: 1837-1852, ISSN: 1680-7316- Author Web Link
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- Citations: 26
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Journal articleArcher MO, Horbury TS, Eastwood JP, et al., 2013,
Magnetospheric response to magnetosheath pressure pulses: A low pass filter effect
, Journal of Geophysical Research, Vol: 118, Pages: 5454-5466Abstract. We present observations from the magnetopause to the ground during periods of large amplitude, transient dynamic pressure pulses in the magnetosheath. While individual magnetosheath pulses are sharp and impulsive, the magnetospheric response is much smoother with frequencies in the Pc5-6 range being excited in the compressional and poloidal components of the magnetic field. We show that the magnetopause acts like a low pass filter, suppressing timescales shorter than a few minutes. Further filtering appears to occur locally within the magnetosphere, which may be due to the unusual field line resonance frequency profile on this day. Ground magnetometer and radar data along with equivalent ionospheric currents show signatures of travelling convection vortices, similar to the response from pressure variations of solar wind origin. However, the signatures are associated with groups of magnetosheath pulses rather than individual ones due to the impulsive nature of the pressure variations. Thus the scale-dependent magnetospheric response to these transient pressure variations, results in coherent signatures on longer timescales than any individual pulse.
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Journal articleTurnbull J, Graven H, Miller J, et al., 2013,
ATMOSPHERIC RADIOCARBON WORKSHOP REPORT
, RADIOCARBON, Vol: 55, Pages: 1470-1474, ISSN: 0033-8222- Author Web Link
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- Citations: 2
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Journal articleShindell DT, Pechony O, Voulgarakis A, et al., 2013,
Interactive ozone and methane chemistry in GISS-E2 historical and future climate simulations
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 2653-2689 -
Journal articleStevenson DS, Young PJ, Naik V, et al., 2013,
Tropospheric ozone changes, radiative forcing and attribution to emissions in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP)
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 3063-3085 -
Journal articleYoung PJ, Archibald AT, Bowman KW, et al., 2013,
Pre-industrial to end 21st century projections of tropospheric ozone from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP)
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 2063-2090 -
Journal articleShindell DT, Lamarque JF, Schulz M, et al., 2013,
Radiative forcing in the ACCMIP historical and future climate simulations
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 2939-2974 -
Journal articleLamarque JF, Shindell DT, Josse B, et al., 2013,
The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): overview and description of models, simulations and climate diagnostics
, Geosci. Model Dev., Vol: 6, Pages: 179-206 -
Journal articleVoulgarakis A, Naik V, Lamarque JF, et al., 2013,
Analysis of present day and future OH and methane lifetime in the ACCMIP simulations
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 2563-2587 -
Journal articleMarlier ME, DeFries RS, Voulgarakis A, et al., 2013,
El Nino and health risks from landscape fireemissions in southeast Asia
, Nature Climate Change, Vol: 3, Pages: 131-136 -
Conference paperFranci L, De Pietri R, Dionysopoulou K, et al., 2013,
Bar-mode instability suppression in magnetized relativistic stars
, 4th Young Researcher Meeting, Publisher: IOP PUBLISHING LTD, ISSN: 1742-6588 -
Conference paperWicks RT, Matteini L, Horbury TS, et al., 2013,
Temperature anisotropy instabilities; combining plasma and magnetic field data at different distances from the Sun.
, 13th International Solar Wind Conference (Solar Wind), Publisher: AMER INST PHYSICS, Pages: 303-306, ISSN: 0094-243X- Author Web Link
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- Citations: 13
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Conference paperForman MA, Wicks RT, Horbury TS, et al., 2013,
Scaling Anisotropy of the Power in Parallel and Perpendicular Components of the Solar Wind Magnetic Field
, 13th International Solar Wind Conference (Solar Wind), Publisher: AMER INST PHYSICS, Pages: 167-170, ISSN: 0094-243X- Author Web Link
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- Citations: 1
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Conference paperGarrick-Bethell I, Lin RP, Sanchez H, et al., 2013,
Lunar magnetic field measurements with a cubesat
, Conference on Sensors and Systems for Space Applications VI, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X- Author Web Link
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- Citations: 9
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Conference paperCoburn JT, Smith CW, Vasquez BJ, et al., 2013,
The Turbulent Cascade and Proton Heating in the Solar Wind During Solar Minimum
, 13th International Solar Wind Conference (Solar Wind), Publisher: AMER INST PHYSICS, Pages: 147-150, ISSN: 0094-243X- Author Web Link
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- Citations: 2
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Journal articleVolwerk M, Andre N, Arridge CS, et al., 2013,
Comparative magnetotail flapping: an overview of selected events at Earth, Jupiter and Saturn
, ANNALES GEOPHYSICAE, Vol: 31, Pages: 817-833, ISSN: 0992-7689- Author Web Link
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- Citations: 32
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Journal articleAndreeova K, Kilpua EKJ, Hietala H, et al., 2013,
Analysis of the substructure within a complex magnetic cloud on 3-4 September 2008
, ANNALES GEOPHYSICAE, Vol: 31, Pages: 555-562, ISSN: 0992-7689- Author Web Link
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- Citations: 2
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Journal articleKilpua EKJ, Hietala H, Koskinen HEJ, et al., 2013,
Magnetic field and dynamic pressure ULF fluctuations in coronal-mass-ejection-driven sheath regions
, ANNALES GEOPHYSICAE, Vol: 31, Pages: 1559-1567, ISSN: 0992-7689- Author Web Link
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- Citations: 37
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Journal articlePlaschke F, Hietala H, Angelopoulos V, 2013,
Anti-sunward high-speed jets in the subsolar magnetosheath
, ANNALES GEOPHYSICAE, Vol: 31, Pages: 1877-1889, ISSN: 0992-7689- Author Web Link
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- Citations: 95
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Journal articleTurc L, Fontaine D, Savoini P, et al., 2013,
A comparison of bow shock models with Cluster observations during low Alfven Mach number magnetic clouds
, ANNALES GEOPHYSICAE, Vol: 31, Pages: 1011-1019, ISSN: 0992-7689- Author Web Link
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- Citations: 9
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Journal articleOwens MJ, Forsyth RJ, 2013,
The Heliospheric Magnetic Field
, LIVING REVIEWS IN SOLAR PHYSICS, Vol: 10, ISSN: 2367-3648- Author Web Link
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- Citations: 160
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Journal articleArcher MO, Hartinger MD, Horbury TS, 2013,
Magnetospheric “magic” frequencies as magnetopause surface eigenmodes
, Geophysical Research Letters, Vol: 40, Pages: 5003-5008Abstract. The persistent so-called “magic” magnetospheric frequencies are thought to be either directly driven by monochromatic solar wind pressure fluctuations or resonantly excited global (cavity/waveguide) or magnetopause surface eigenmodes. We distinguish between these cases by statistically investigating, using simultaneous observations, the magnetospheric response to jets in the subsolar magnetosheath. The broadband jets do not exhibit discrete frequencies, but do drive waves at the discrete “magic” frequencies, with both direct and resonant driving. We show that the expected fundamental frequencies of magnetopause surface eigenmodes have two preferential values over a wide range of upstream conditions, corresponding to fast and slow solar wind, and that their harmonics are in good agreement with the “magic” frequencies. We also show that the waves are largely inconsistent with global modes outside the plasmasphere. Thus we conclude that these “magic” frequencies are most likely due to magnetopause surface eigenmodes.
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Journal articleDhomse SS, Chipperfield MP, Feng W, et al., 2013,
Stratospheric O<sub>3</sub> changes during 2001-2010: the small role of solar flux variations in a chemical transport model
, ATMOSPHERIC CHEMISTRY AND PHYSICS, Vol: 13, Pages: 10113-10123, ISSN: 1680-7316- Author Web Link
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- Citations: 21
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Journal articleMiller J, Lehman S, Wolak C, et al., 2013,
INITIAL RESULTS OF AN INTERCOMPARISON OF AMS-BASED ATMOSPHERIC <SUP>14</SUP>CO<sub>2</sub> MEASUREMENTS
, RADIOCARBON, Vol: 55, Pages: 1475-1483, ISSN: 0033-8222- Author Web Link
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- Citations: 11
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Journal articleGraven HD, Xu X, Guilderson TP, et al., 2013,
COMPARISON OF INDEPENDENT Δ<SUP>14</SUP>CO<sub>2</sub> RECORDS AT POINT BARROW, ALASKA
, RADIOCARBON, Vol: 55, Pages: 1541-1545, ISSN: 0033-8222- Author Web Link
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- Citations: 7
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Book chapterSolanki SK, Krivova NA, Haigh JD, 2013,
Solar Irradiance Variability and Climate
, ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 51, Editors: Faber, VanDishoeck, Publisher: ANNUAL REVIEWS, Pages: 311-351- Author Web Link
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- Citations: 193
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Journal articleStallard TS, Masters A, Miller S, et al., 2012,
Saturn's auroral/polar H<sub>3</sub><SUP>+</SUP> infrared emission: The effect of solar wind compression
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 117, ISSN: 2169-9380- Author Web Link
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- Citations: 19
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Conference paperYoon S, Kim V, Yun J, et al., 2012,
Operations for two spacecraft of triple-cubesat mission trio-cinema with a single rf chain
, Pages: 4240-4245, ISSN: 0074-1795TRiplet Ionospheric Observatory - Cubesat for Ion, Neutral, Electron and MAgnetic fields (TRIO-CINEMA) mission consists of three identical 3U cubesats for scientific observation. The TRIO-CINEMA mission will provide high sensitivity mapping and high cadence measurements of ring current Energetic Neutral Atom (ENA) in the range of 4 - 200 keV with 1 keV FWHM energy resolution in Low Earth Orbit (LEO). Each spacecraft is equipped with a Supra Thermal Electrons, Ions, Neutrals (STEIN) instrument and a MAGnetometer Imperial College (MAGIC) instrument. STEIN instrument is improved from those in SupraThermal Electron (STE) instrument flown on NASA's Solar TERrestrial Relations Observatory (STEREO) spacecraft and is capable of identifying electrons, positive ions and neutrals through the application of an electric field in the entrance aperture. MAGIC is dual 3-axis magnetoresistive sensor for attitude control and scientific measurement. First spacecraft of TRIO-CINEMA is developed and will be operated by Space Science Laboratory of University of California, Berkeley (UCB). Another two spacecraft are developed by Kyung Hee University (KHU) in Republic of Korea. TRIO-CINEMA is expected to provide stereo imaging of ENAs and multi-point measurements of ions, electrons and Earth magnetic fields. It is also expected that the TRIO-CINEMA measurements will complement the measurements with NASA's Radiation Belt Storm Probes (RBSP) mission by stereo imaging of the ring current through ENA measurements at low altitudes. TRIO-CINEMA data will be transmitted at 1 Mbps via S-band, whereas a UHF receiver is used for uplink communication. UCB will operate the mission via Mission Operations Center (MOC) and Berkeley Ground Station (BGS) of Space Science Laboratory (SSL). KHU has constructed a new ground station with one UHF RF system for uplink. The two KHU's spacecraft will be initially contiguous with each other deployed from the same launcher. Because the ground S-band antenna can prov
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Journal articleScherrer SC, Ceppi P, Croci-Maspoli M, et al., 2012,
Snow-albedo feedback and Swiss spring temperature trends
, Theoretical and Applied Climatology, Vol: 110, Pages: 509-516, ISSN: 0177-798XWe quantify the effect of the snow-albedo feedback on Swiss spring temperature trends using daily temperature and snow depth measurements from six station pairs for the period 1961–2011. We show that the daily mean 2-m temperature of a spring day without snow cover is on average 0.4 °C warmer than one with snow cover at the same location. This estimate is comparable with estimates from climate modelling studies. Caused by the decreases in snow pack, the snow-albedo feedback amplifies observed temperature trends in spring. The influence is small and confined to areas around the upward-moving snow line in spring and early summer. For the 1961–2011 period, the related temperature trend increases are in the order of 3–7 % of the total observed trend.
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Journal articleLandi S, Matteini L, Pantellini F, 2012,
ON THE COMPETITION BETWEEN RADIAL EXPANSION AND COULOMB COLLISIONS IN SHAPING THE ELECTRON VELOCITY DISTRIBUTION FUNCTION: KINETIC SIMULATIONS
, ASTROPHYSICAL JOURNAL, Vol: 760, ISSN: 0004-637X- Author Web Link
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- Citations: 48
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