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Journal articleBrindley HE, Harries JE, 2003,
Observations of the infrared outgoing spectrum of the Earth from space: The effects of temporal and spatial sampling
, JOURNAL OF CLIMATE, Vol: 16, Pages: 3820-3833, ISSN: 0894-8755- Author Web Link
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- Citations: 8
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Journal articleKivelson MG, Southwood DJ, 2003,
First evidence of IMF control of Jovian magnetospheric boundary locations: Cassini and Galileo magnetic field measurements compared
, PLANETARY AND SPACE SCIENCE, Vol: 51, Pages: 891-898, ISSN: 0032-0633- Author Web Link
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- Citations: 15
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Journal articleCheung ASC, Wong AL, Lo DHY, et al., 2003,
Application of a VUV Fourier transform spectrometer and synchrotron radiation source to measurements of.: VI.: The ε(0,0) band of NO
, JOURNAL OF CHEMICAL PHYSICS, Vol: 119, Pages: 8373-8378, ISSN: 0021-9606- Author Web Link
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- Citations: 9
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Journal articleBrindley HE, Allan RP, 2003,
Simulations of the effects of interannual and decadal variability on the clear-sky outgoing long-wave radiation spectrum
, Quarterly Journal of the Royal Meteorological Society, Vol: 129, Pages: 2971-2988, ISSN: 0035-9009Using atmospheric profiles derived from the Hadley Centre atmosphere climate model version 3 (HadAM3) as input to a radiative transfer code, the sensitivity of the resolved spectrum of clear-sky outgoing long-wave radiation to both interannual and longer-term atmospheric variability has been analysed. A comparison of the simulated spectra with available observations from two satellite-based instruments indicates a reasonable match, although consistent differences are present. These may be explained by a combination of uncertainties in the atmospheric state, and in the relative calibration of the two instruments. Focusing on the simulations: if HadAM3 is forced by the observed sea surface temperature (SST) record alone, and long-term alterations in the well-mixed greenhouse gases are imposed in the radiance simulations, the changes seen within the major absorption bands are robust. Under a second scenario, where the effects of solar variability, volcanic aerosol, ozone changes and increases in the well-mixed greenhouse gases are also included in the forcing of HadAM3, the long-term profile changes tend to show an enhanced upper-tropospheric warming and low/mid-stratospheric cooling, with increased near-surface humidities compared to the SST-only case. However, the tropospheric response of the system, manifested in the spectral change pattern over the atmospheric window and water vapour bands, falls within the range of year-to-year variability.
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Journal articleCzaja A, 2003,
On the time variability of the net ocean-to-atmosphere heat flux in midlatitudes with application to the North Atlantic basin
, Quarterly Journal of the Royal Meteorological Society, Vol: 129, Pages: 2867-2878, ISSN: 0035-9009A new diagnostic to investigate the role of ocean dynamics in midlatitude air-sea interactions is presented and tested against observations. It is based on the analysis of the time variability of the net ocean-to-atmosphere heat flux (FS). A hierarchy of air-sea interaction models indicate that, in the absence of ocean dynamics, the power spectrum of FS should be blue at time-scales longer than a threshold set by the late-winter mean mixed-layer thickness and the sensitivity of FS to sea surface temperature anomalies. Comparison of the predicted FS spectrum with observations over the North Atlantic shows a good agreement over the subpolar gyre where the deep ocean mixed layer combined with strong stochastic forcing allows large fluctuations in FS at decadal and longer time-scales. Discrepancies, however, arise over the Gulf Stream extension region. Here it is suggested that the observed variability of FS at time-scales longer than a decade is controlled by geostrophic ocean dynamics rather than local atmospheric forcing. The diagnostic appears to be a useful and simple tool to investigate the role of ocean dynamics in the upper-ocean heat budget. It is particularly well suited to the analysis of long simulations of coupled ocean-atmosphere models. One implication of the study for ocean-only numerical simulations is that one cannot specify externally the low-frequency variability of FS. The latter should only arise as a consequence of ocean dynamics.
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Journal articleBogdanov AT, Glassmeier KH, Musmann G, et al., 2003,
Ion cyclotron waves in the Earth's magnetotail during CASSINI's Earth swing-by
, ANNALES GEOPHYSICAE, Vol: 21, Pages: 2043-2057, ISSN: 0992-7689- Author Web Link
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- Citations: 7
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Journal articleBrindley HE, Allan RP, 2003,
Simulations of the effects of interannual and decadal variability on the clear-sky outgoing long-wave radiation spectrum
, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 129, Pages: 2971-2988, ISSN: 0035-9009- Author Web Link
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- Citations: 9
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Journal articleMazelle C, Meziane K, LeQuéau D, et al., 2003,
Production of gyrating ions from nonlinear wave-particle interaction upstream from the Earth's bow shock:: A case study from Cluster-CIS
, PLANETARY AND SPACE SCIENCE, Vol: 51, Pages: 785-795, ISSN: 0032-0633- Author Web Link
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- Citations: 84
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Journal articleZong QG, Fritz TA, Spence H, et al., 2003,
Bursty energetic electrons confined in flux ropes in the cusp region
, PLANETARY AND SPACE SCIENCE, Vol: 51, Pages: 821-830, ISSN: 0032-0633- Author Web Link
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- Citations: 26
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Journal articleCzaja A, 2003,
On the time variability of the net ocean-to-atmosphere heat flux in midlatitudes, with application to the North Atlantic basin
, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 129, Pages: 2867-2878, ISSN: 0035-9009- Author Web Link
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- Citations: 3
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Journal articleSanderson TR, Marsden RG, Tranquille C, et al., 2003,
Propagation of energetic particles in the high-latitude high-speed solar wind
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 15
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Journal articleDalla S, Balogh A, Krucker S, et al., 2003,
Properties of high heliolatitude solar energetic particle events and constraints on models of acceleration and propagation -: art. no. 8035
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 62
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Journal articleLin NG, Kellogg PJ, MacDowall RJ, et al., 2003,
VLF wave activity in the solar wind and the photoelectron effect in electric field measurements: Ulysses observations
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 10
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Journal articleJones GH, Balogh A, Smith EJ, 2003,
Solar magnetic field reversal as seen at Ulysses
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 35
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Journal articleHofer MY, Marsden RG, Sanderson TR, et al., 2003,
Transition to solar minimum at high solar latitudes: Energetic particles from corotating interaction regions
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 4
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Journal articleReisenfeld DB, Gosling JT, Forsyth RJ, et al., 2003,
Properties of high-latitude CME-driven disturbances during Ulysses second northern polar passage
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 41
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Journal articleRees A, Forsyth RJ, 2003,
Magnetic clouds with east/west orientated axes observed by Ulysses during solar cycle
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 10
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Journal articleSahraoui F, Pinçon JL, Belmont G, et al., 2003,
ULF wave identification in the magnetosheath:: The k-filtering technique applied to Cluster II data -: art. no. 1335
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 108, ISSN: 2169-9380- Author Web Link
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- Citations: 90
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Conference paperLin N, Kellogg PJ, MacDowall RJ, et al., 2003,
Comparison of VLF Wave Activity in the Solar Wind during Solar Maximum and Minimum: Ulysses Observations
, Pages: 534-537, ISSN: 0094-243XWe have compared observations of VLF waves (0.2 to 448 Hz) made by Ulysses during its second fast latitude scan (near the solar maximum) with the wave observations during the first fast latitude scan in 1995, when the solar activity was approaching a minimum. The occurrences and properties of the waves are found to be similar during the solar maximum and solar minimum periods for slow and intermediate speed solar wind. The maximum intensity of the electromagnetic waves for the two solar cycle periods is comparable. These similarities suggest that the plasma conditions for the waves' excitation are similar for the slow and intermediate solar wind in both solar maximum and minimum phases. It is also found that the electric field noise detected in the low band channels, which are measuring less than 9 Hz signals, is contaminated by the spin modulation of the electric field due to photoelectrons around the spacecraft, especially when the ambient plasma density is low. This noise increases with increasing solar aspect angle.
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Conference paperQureshi MNS, Pallocchia G, Bruno R, et al., 2003,
Solar Wind Particle Distribution Function Fitted via the Generalized Kappa Distribution Function: Cluster Observations
, Pages: 489-492, ISSN: 0094-243XOne of the major issues in space plasma physics is that in spite of the inhomogeneity of interplanetary plasma and the complicated magnetic field topology we do not find strong deviations from Maxwellian distributions as it would be expected for a quasi-collisionless plasma. However, the presence of high energy tail and shoulders in the profile of distribution function stimulate to look for a better analytic representation of the observed distributions. Therefore, here we adopt a non-Maxwellian distribution function such as the Ellipsian distribution function, which is the generalized form of the Kappa distribution function. In this paper we have analysed the solar wind data recorded by Cluster s/c during early 2001 and 2002 when the s/c were repeatedly immersed in the solar wind, ahead of the Earth's bow shock. Data were modeled with the help of the Ellipsian distribution function and values of the best fit parameters were successively used to characterize the solar wind kinetics at different locations of one of the four Cluster s/c.
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Conference paperReisenfeld DB, Gosling JT, Steinberg JT, et al., 2003,
CMEs at High Northern Latitudes during Solar Maximum: Ulysses and SOHO Correlated Observations
, Pages: 210-213, ISSN: 0094-243XFrom September through November 2001, Ulysses was almost continuously immersed in polar coronal hole (CH) flow during its northern polar pass of the Sun. For much of this time, the flow was fast (> 700 km/s) and steady, quite similar to the steady unstructured flow observed during Ulysses' first polar orbit near solar minimum. During the three months Ulysses transited the northern polar CH it observed 5 coronal mass ejections (CMEs). Of these, two were clearly over-expanding and two were at least partially driven by overexpansion. The phenomenon of over-expansion was frequently observed at high latitudes during Ulysses' first orbit. The recurrence of over-expanding CMEs during the second orbit at high latitudes indicates that this is a phenomenon apparently unique to and typical of CMEs embedded in polar CH flow. Ulysses was nearly above the solar limb during this three-month interval, providing an opportunity to use LASCO/SOHO observations to study the initial velocity profiles of the CMEs observed further out by Ulysses. These initial conditions were used as inputs into a hydrodynamic code, the results of which are reported here.
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Journal articleVörös Z, Baumjohann W, Nakamura R, et al., 2003,
Multi-scale magnetic field intermittence in the plasma sheet
, ANNALES GEOPHYSICAE, Vol: 21, Pages: 1955-1964, ISSN: 0992-7689- Author Web Link
- Open Access Link
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- Citations: 57
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Journal articleMessnarz D, Jaritz N, Arcimowicz B, et al., 2003,
Investigation of the hyperfine structure of TaI lines (VII)
, PHYSICA SCRIPTA, Vol: 68, Pages: 170-191, ISSN: 0031-8949- Author Web Link
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- Citations: 19
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Journal articleSergeev VA, Sauvaud JA, Reme H, et al., 2003,
Sharp boundary between the inner magnetosphere and active outer plasma sheet
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 13
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Journal articleWild JA, Milan SE, Cowley SWH, et al., 2003,
Coordinated interhemispheric SuperDARN radar observations of the ionospheric response to flux transfer events observed by the Cluster spacecraft at the high-latitude magnetopause
, ANNALES GEOPHYSICAE, Vol: 21, Pages: 1807-1826, ISSN: 0992-7689- Author Web Link
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- Citations: 38
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Journal articleLouarn P, Budnik E, Sauvaud JA, et al., 2003,
Observation of energy-time dispersed ion structures in the magnetosheath by CLUSTER:: possible signatures of transient acceleration processes at shock
, ANNALES GEOPHYSICAE, Vol: 21, Pages: 1483-1495, ISSN: 0992-7689- Author Web Link
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- Citations: 9
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Journal articleLanchester BS, Galand M, Robertson SC, et al., 2003,
High resolution measurements and modeling of auroral hydrogen emission line profiles
, ANNALES GEOPHYSICAE, Vol: 21, Pages: 1629-1643, ISSN: 0992-7689- Author Web Link
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- Citations: 10
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Journal articleEastwood JP, Balogh A, Lucek EA, et al., 2003,
On the existence of Alfven waves in the terrestrial foreshock
, ANNALES GEOPHYSICAE, Vol: 21, Pages: 1457-1465, ISSN: 0992-7689- Author Web Link
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- Citations: 47
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Journal articlePetrukovich AA, Baumjohann W, Nakamura R, et al., 2003,
Plasma sheet structure during strongly northward IMF
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 108, ISSN: 2169-9380- Author Web Link
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- Citations: 30
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Journal articleRunov A, Nakamura R, Baumjohann W, et al., 2003,
Current sheet structure near magnetic X-line observed by Cluster -: art. no. 1579
, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276- Author Web Link
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- Citations: 234
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