| Records |
| Author |
J.-Ch. Hamilton for the QUBIC Collaboration |
| Title |
QUBIC: The QU Bolometric Interferometer for Cosmology |
Type |
Conference - International - Communication |
| Year |
2013 |
Publication |
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Invited talk at CMB2013, held at Okinawa, Japan, 1-14 June 2013 |
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915 |
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Approved |
yes |
| Call Number |
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Serial |
4476 |
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| Author |
Marie-Anne Bigot-Sazy, for the QUBIC Collaboration |
| Title |
QUBIC: The QU Bolometric Interferometer for Cosmology |
Type |
Conference - International - Communication |
| Year |
2013 |
Publication |
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Invited talk at Cosmology in the Planck Era, held at Quy Nhon, Viet Nam, July 28th-Aug 3 2013 |
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915 |
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Approved |
yes |
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4477 |
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| Author |
Andrea Tartari for the QUBIC Collaboration |
| Title |
QUBIC: The QU Bolometric Interferometer for Cosmology |
Type |
Conference - International - Communication |
| Year |
2013 |
Publication |
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Contributed talk at AP-RASC'13 held in Taiwan, september 3-7 2013 |
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915 |
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yes |
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4478 |
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| Author |
Adnan Ghribi for the QUBIC Collaboration |
| Title |
QUBIC: The QU bolometric Interferometer for Cosmology |
Type |
Conference - International - Communication |
| Year |
2013 |
Publication |
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Abbreviated Journal |
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Contributed talk at LTD15 held in Pasadena, California, USA, June 24th-28th 2013 |
| Programme |
915 |
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Approved |
yes |
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Serial |
4479 |
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| Author |
J.-Ch. Hamilton for the QUBIC Collaboration |
| Title |
QUBIC: The QU Bolometric Interferometer for Cosmology |
Type |
Conference - International - Communication |
| Year |
2013 |
Publication |
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Issue |
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Invited talk at SCAR-AAA workshop (Scientific Committee on Antarctic Research – Astronomy and Astrophysics from Antarctica), held in Siena, Italy, 24-26 july 2013 |
| Programme |
915 |
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Approved |
yes |
| Call Number |
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Serial |
4480 |
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| Author |
T. Dinh, A. Podglajen, A. Hertzog, B. Legras, R. Plougonven |
| Title |
Effect of gravity wave temperature fluctuations on homogeneous ice nucleation in the tropical tropopause layer |
Type |
Journal |
| Year |
2016 |
Publication |
Atmospheric Chemistry and Physics |
Abbreviated Journal |
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| Volume |
16 |
Issue |
1 |
Pages |
35-46 |
| Keywords |
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| Abstract |
The impact of high-frequency fluctuations of temperature on homogeneous nucleation of ice crystals in the vicinity of the tropical tropopause is investigated using a bin microphysics scheme for air parcels. The imposed temperature fluctuations come from measurements during isopycnic balloon flights near the tropical tropopause. The balloons collected data at high frequency, guaranteeing that gravity wave signals are well resolved.
With the observed temperature time series, the numerical simulations with homogeneous freezing show a full range of ice number concentration (INC) as previously observed in the tropical upper troposphere. In particular, a low INC may be obtained if the gravity wave perturbations produce a non-persistent cooling rate (even with large magnitude) such that the absolute change in temperature remains small during nucleation. This result is explained analytically by a dependence of the INC on the absolute drop in temperature (and not on the cooling rate). This work suggests that homogeneous ice nucleation is not necessarily inconsistent with observations of low INCs. |
| Programme |
914 |
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| ISSN |
1680-7316 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8280 |
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| Author |
Nathalie Boullot, Florence Rabier, Rolf Langland, Ron Gelaro, Carla Cardinali, Vincent Guidard, Peter Bauer, Alexis Doerenbecher |
| Title |
Observation impact over the southern polar area during the Concordiasi field campaign |
Type |
Journal |
| Year |
2016 |
Publication |
Quarterly Journal of the Royal Meteorological Society |
Abbreviated Journal |
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| Volume |
142 |
Issue |
695 |
Pages |
597-610 |
| Keywords |
dropsondes forecast score forecast sensitivity to observations observing-system experiment |
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914 |
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Edition |
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| ISSN |
1477-870X |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8281 |
| Permanent link to this record |
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| Author |
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| Title |
Identification of the ionospheric footprint of magnetospheric boundaries using SuperDARN coherent HF radars |
Type |
Journal Article |
| Year |
2003 |
Publication |
Planetary and space science |
Abbreviated Journal |
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| Volume |
51 |
Issue |
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Pages |
813-820 |
| Keywords |
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| Abstract |
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| Programme |
911;312 |
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| ISSN |
0032-0633 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
3658 |
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| Author |
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| Title |
A statistical approach for identifying the ionospheric footprint of magnetospheric boundaries from SuperDARN observations
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Type |
Journal Article |
| Year |
2008 |
Publication |
Annales Geophysicae |
Abbreviated Journal |
0992-7689 |
| Volume |
26 |
Issue |
2 |
Pages |
305-314 |
| Keywords |
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| Abstract |
Identifying and tracking the projection of magnetospheric regions on the high-latitude ionosphere is of primary importance for studying the Solar Wind-Magnetosphere-Ionosphere system and for space weather applications. By its unique spatial coverage and temporal resolution, the Super Dual Auroral Radar Network (SuperDARN) provides key parameters, such as the Doppler spectral width, which allows the monitoring of the ionospheric footprint of some magnetospheric boundaries in near real-time. In this study, we present the first results of a statistical approach for monitoring these magnetospheric boundaries. The singular value decomposition is used as a data reduction tool to describe the backscattered echoes with a small set of parameters. One of these is strongly correlated with the Doppler spectral width, and can thus be used as a proxy for it. Based on this, we propose a Bayesian classifier for identifying the spectral width boundary, which is classically associated with the Polar Cap boundary. The results are in good agreement with previous studies. Two advantages of the method are: the possibility to apply it in near real-time, and its capacity to select the appropriate threshold level for the boundary detection. |
| Programme |
911 |
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0992-7689 |
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Approved |
yes |
| Call Number |
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Serial |
2735 |
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| Author |
Marchaudon A, Cerisier J-C, Dunlop M W, Pitout F, Bosqued J-M, Fazakerley A N, |
| Title |
Shape, size, velocity and field-aligned currents of dayside plasma injections: a multi-altitude study
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Type |
Journal Article |
| Year |
2009 |
Publication |
Ann. Geophys. |
Abbreviated Journal |
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| Volume |
27 |
Issue |
3 |
Pages |
1251-1266 |
| Keywords |
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| Abstract |
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| Programme |
911 |
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| Publisher |
Copernicus Publications |
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| ISSN |
1432-0576 |
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Approved |
yes |
| Call Number |
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Serial |
2894 |
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