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Title  |
The summer 2012 Greenland heat wave: In situ and remote sensing observations of water vapor isotopic composition during an atmospheric river event
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Journal Article |
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Year |
2015 |
Publication |
Journal of Geophysical Research: Atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
120 |
Issue |
7 |
Pages |
2970-2989 |
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Abstract |
During July 7-12, 2012, extreme moist and warm conditions occurred over Greenland, leading to widespread surface melt. To investigate the physical processes during the atmospheric moisture transport of this event, we study the water vapour isotopic composition using surface in situ observations in Bermuda Island, South Greenland coast (Ivittuut) and Northwest Greenland ice sheet (NEEM), as well as remote sensing observations (IASI instrument on-board MetOp-A), depicting propagation of similar surface and mid-tropospheric humidity and δD signals. Simulations using Lagrangian moisture source diagnostic and water tagging in a regional model showed that Greenland was affected by an atmospheric river transporting moisture from the western subtropical North Atlantic Ocean, which is coherent with observations of snow pit impurities deposited at NEEM. At Ivittuut, surface air temperature, humidity and δD increases are observed. At NEEM, similar temperature increase is associated with a large and long-lasting ~100 δD enrichment and ~15 deuterium excess decrease, thereby reaching Ivittuut level. We assess the simulation of this event in two isotope-enabled atmospheric general circulation models (LMDz-iso and ECHAM5-wiso). LMDz-iso correctly captures the timing of propagation for this event identified in IASI data but depict too gradual variations when compared to surface data. Both models reproduce the surface meteorological and isotopic values during the event but underestimate the background deuterium excess at NEEM. Cloud liquid water content parametrization in LMDz-iso poorly impacts the vapour isotopic composition. Our data demonstrate that during this atmospheric river event the deuterium excess signal is conserved from the moisture source to Northwest Greenland. |
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1134 |
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0148-0227 |
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yes |
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6071 |
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Author |
Cosme, E.; Genthon, C.; Martinerie, P.; Boucher, O.; Pham, M. |
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Title |
The sulfur cycle at high-southern latitudes in the LMD-ZT General Circulation Model |
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Journal Article |
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Year |
2002 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
107 |
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414;903 |
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American Geophysical Union |
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0148-0227 |
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yes |
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IPEV @ Thierry.Lemaire @ |
Serial |
5543 |
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Author |
O. Alemany, P. Talalay, P. Boissonneau, J. Chappellaz, J. F. Chemin, R. Duphil, E. Lefebvre, L. Piard, P. Possenti, J. Triest |
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Title |
The SUBGLACIOR drilling probe: hydraulic considerations |
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Journal |
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Year |
2021 |
Publication |
Annals of Glaciology |
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Volume |
62 |
Issue |
84 |
Pages |
131-142 |
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Keywords |
Glaciological instruments and methods ice coring ice engineering paleoclimate |
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Using significant technological breakthroughs and unconventional approaches, the goal of the in situ probing of glacier ice for a better understanding of the orbital response of climate (SUBGLACIOR) project is to advance ice core research by inventing, constructing and testing an in situ probe to evaluate if a target site is suitable for recovering ice as old as 1.5 million years. Embedding a laser spectrometer, the probe is intended to make its own way down into the ice and to measure, in real time and down to the bedrock, the depth profiles of the ice ?D water isotopes as well as the trapped CH4 gas concentration and dust concentration. The probe descent is achieved through electromechanical drilling combined with continuous meltwater sample production using a central melting finger in the drill head. A key aspect of the project lies in the design and implementation of an efficient method to continuously transfer to the surface the ice chips being produced by the drill head and from the refreezed water expulsed downstream from the melting finger, into the borehole. This paper presents a detailed calculation and analysis of the flow rates and pressure conditions required to overcome friction losses of the drilling fluid and to effectively transport ice chips to the surface. |
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119 |
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0260-3055, 1727-5644 |
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yes |
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Serial |
8234 |
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Author |
Alemany O, Chappellaz J, Triest J, Calzas M, Cattani O, Chemin JF, Desbois Q, Desbois T, Duphil R, Falourd S, Grilli R, Guillerme C, Kerstel E, Laurent B, Lefebvre E, Marrocco N, Pascual O, Piard L, Possenti P, Romanini D, Thiebaut V, Yamani R, |
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Title |
The SUBGLACIOR drilling probe: concept and design
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Journal Article |
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Year |
2014 |
Publication |
Annals of Glaciology |
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Volume |
55 |
Issue |
68 |
Pages |
233-242 |
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1119 |
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International Glaciological Society |
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0260-3055 |
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yes |
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Call Number |
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Serial |
5931 |
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Author |
Van De Vijver B. & Beyens L. |
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Title |
The Subfossil Chrysophyte Cyst Flora of Some Peat Samples from Kerguelen Islands. |
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Journal Article |
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Year |
1997 |
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Volume |
148 |
Issue |
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Pages |
491-503 |
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136 |
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yes |
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955 |
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Title |
The subantarctic lithospheric mantle |
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Journal |
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2023 |
Publication |
Geological Society, London, Memoirs |
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56 |
Issue |
1 |
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115-132 |
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1077 |
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yes |
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8612 |
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Author |
Charrier I., Mathevon N., Hassnaoui M., Carraro L. & Jouventin P. |
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Title |
The subantarctic fur seal pup switches its begging behaviour during maternal absence. |
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Journal Article |
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Year |
2002 |
Publication |
Canadian journal of zoology-revue canadienne de zoologie |
Abbreviated Journal |
Can. J. Zool. |
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80 |
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Pages |
1250-1255 |
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354 |
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0008-4301 |
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yes |
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3091 |
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The study of the mercury cycle in polar regions: An international study in Ny-Alesund, Svalbard |
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Journal Article |
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2006 |
Publication |
Mem. national inst. polar res. spec. issue |
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59 |
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168-184 |
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399 |
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yes |
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3242 |
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Journal Article |
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2007 |
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Reviews of geophysics |
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45 |
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history; geomagnetism; paleomagnetism; 1599 Geomagnetism and Paleomagnetism: General or miscellaneous; 1714 History of Geophysics: Geomagnetism and paleomagnetism; 5440 Planetary Sciences: Solid Surface Planets: Magnetic fields and magnetism; 7999 Space Weather: General or miscellaneous; 9820 General or Miscellaneous: Techniques applicable in three or more fields |
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139 |
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American Geophysical Union |
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ISSN |
8755-1209 |
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yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5486 |
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Author |
Geoffroy L. |
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Title |
The structure of Volcanic margins : some problematics from the North-Atlantic/ Labrador-Baffin system. |
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Journal Article |
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Year |
2001 |
Publication |
Marine and petroleum geology |
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Volume |
18 |
Issue |
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Pages |
463-469 |
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290 |
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0264-8172 |
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yes |
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Call Number |
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2401 |
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