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Global sea-level rise and its relation to the terrestrial reference frame / Xavier Collilieux in Journal of geodesy, vol 85 n° 1 (January 2011)
[article]
Titre : Global sea-level rise and its relation to the terrestrial reference frame Type de document : Article/Communication Auteurs : Xavier Collilieux , Auteur ; Guy Wöppelmann , Auteur Année de publication : 2011 Article en page(s) : pp 9 - 22 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] niveau moyen des mers
[Termes IGN] propagation d'erreur
[Termes IGN] station GPSRésumé : (Auteur) We examined the sensitivity of estimates of global sea-level rise obtained from GPS-corrected long term tide gauge records to uncertainties in the International Terrestrial Reference Frame (ITRF) realization. A useful transfer function was established, linking potential errors in the reference frame datum (origin and scale) to resulting errors in the estimate of global sea level rise. Contrary to scale errors that are propagated by a factor of 100%, the impact of errors in the origin depends on the network geometry. The geometry of the network analyzed here resulted in an error propagation factor of 50% for the Z component of the origin, mainly due to the asymmetry in the distribution of the stations between hemispheres. This factor decreased from 50% to less than 10% as the geometry of the network improved using realistic potential stations that did not yet meet the selection criteria (e.g., record length, data availability). Conversely, we explored new constraints on the reference frame by considering forward calculations involving tide gauge records. A reference frame could be found in which the scatter of the regional sea-level rates was limited. The resulting reference frame drifted by 1.36 + 0.22 mm/year from the ITRF2000 origin in the Z component and by -0.44 + 0.22 mm/year from the ITRF2005 origin. A bound on the rate of global sea level rise of 1.2 to 1.6 mm/year was derived for the past century, depending on the origin of the adopted reference frame. The upper bound is slightly lower than previous estimates of 1.8 mm/year discussed in the IPCC fourth report. Numéro de notice : A2011-056 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-010-0412-4 Date de publication en ligne : 05/10/2010 En ligne : https://doi.org/10.1007/s00190-010-0412-4 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30837
in Journal of geodesy > vol 85 n° 1 (January 2011) . - pp 9 - 22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 266-2011011 RAB Revue Centre de documentation En réserve L003 Disponible Mesoscale water cycle within the West African Monsoon / Christophe Peugeot in Atmospheric Science Letters, vol 12 n° 1 (January - March 2011)
[article]
Titre : Mesoscale water cycle within the West African Monsoon Type de document : Article/Communication Auteurs : Christophe Peugeot, Auteur ; Françoise Guichard, Auteur ; Olivier Bock , Auteur ; Dominique Bouniol, Auteur ; Michel Chong, Auteur ; Aaron Boone, Auteur ; Bernard Cappelaere, Auteur ; Marielle Gosset, Auteur ; Lucas Besson, Auteur ; Yvon Lemaître, Auteur ; Luc Séguis, Auteur ; Abderrahim Zannou, Auteur ; Sylvie Galle, Auteur ; Jean-Luc Redelsperger, Auteur Année de publication : 2011 Projets : AMMA & AMMA-2 / Janicot, Serge Article en page(s) : pp 45 - 50 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] Afrique occidentale
[Termes IGN] Bénin
[Termes IGN] bilan hydrique
[Termes IGN] données météorologiques
[Termes IGN] évapotranspiration
[Termes IGN] modèle météorologique
[Termes IGN] mousson
[Termes IGN] Niger
[Termes IGN] précipitation
[Termes IGN] station GPSRésumé : (Auteur) We review the main studies on mesoscale water cycle from the African Monsoon Multidisciplinary Analysis (AMMA) project. The estimations of precipitation and evapotranspiration, which are the coupling terms between the atmosphere and the surface water cycles, are addressed. Advances in the evaluation of the various components of atmospheric and surface water budgets are reported, and the yearly surface budgets for the Benin and Niger AMMA mesoscale sites are given as examples. The major outcomes and limitations of atmosphere‐surface model coupling exercises are also reported. The paper concludes with suggestions on the research directions on which the community should make future efforts. Numéro de notice : A2011-595 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : doi.org/10.1002/asl.309 Date de publication en ligne : 22/02/2011 En ligne : https://doi.org/10.1002/asl.309 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91527
in Atmospheric Science Letters > vol 12 n° 1 (January - March 2011) . - pp 45 - 50[article]An inter-comparison of zenith tropospheric delays derived from DORIS and GPS data / Olivier Bock in Advances in space research, vol 46 n° 12 (15/12/2010)
[article]
Titre : An inter-comparison of zenith tropospheric delays derived from DORIS and GPS data Type de document : Article/Communication Auteurs : Olivier Bock , Auteur ; Pascal Willis , Auteur ; Maïté Lacarra, Auteur ; Pierre Bosser , Auteur Année de publication : 2010 Article en page(s) : pp 1648 - 1660 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] analyse comparative
[Termes IGN] analyse diachronique
[Termes IGN] antenne GPS
[Termes IGN] données DORIS
[Termes IGN] données GPS
[Termes IGN] erreur systématique
[Termes IGN] propagation troposphérique
[Termes IGN] station DORIS
[Termes IGN] station GPS
[Termes IGN] traitement du signal
[Termes IGN] variabilitéRésumé : (Auteur) Doppler Orbitography Radiopositioning Integrated by Satellite (DORIS) and Global Positioning System (GPS) techniques are similarly affected by propagation delays in the neutral atmosphere (troposphere) and hence make use of similar data processing strategies for reducing this effect. We compare Zenith Tropospheric Delays (ZTDs) estimated from 52 DORIS and GPS station pairs co-located at 35 sites over the 2005–2008 period. We find an overall systematic negative mean bias of -4 mm and a median bias of -2 mm, with a large site-to-site scatter and especially stronger biases over South America, potentially linked to remaining problems related to the South Atlantic Anomaly (SAA) in the current DORIS data processing. The standard deviation of ZTD differences is in the range 4–12 mm over the globe (8 mm on average), with larger values located in the southern hemisphere. The spatial variability of differences is consistent with previous work but remains largely unexplained. DORIS is shown to be much less sensitive to instrumental changes than GPS (only the switch from Alcatel to Starec antenna at Toulouse is detected as an offset of -4 mm in the ZTD time series). On the opposite, discontinuities and spurious annual signals are found in the GPS ZTD solutions. A discontinuity of +5 mm is found on 5 November 2006, linked to the switch from relative to absolute GPS antenna models used in the data processing. The use of modified GPS antennas (e.g. at GODE) or improved antenna models is shown to reduce the spurious annual signal (e.g. from 5 mm to 2 mm at METS). Overall, the agreement between both techniques is good, though DORIS shows a significantly larger random scatter. The high stability and good spatial and temporal coverage make DORIS a potential candidate technique for meteorology and climate studies as long as reasonable time averaging can be applied (e.g. differences are reduced from 8.6 to 2.4 mm with 5-day averages) and no real-time application is considered. This technique could be considered as a potential contributor to Global Geodetic Observing System (GGOS) for climatology. Numéro de notice : A2010-568 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asr.2010.05.018 Date de publication en ligne : 21/05/2010 En ligne : https://doi.org/10.1016/j.asr.2010.05.018 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30760
in Advances in space research > vol 46 n° 12 (15/12/2010) . - pp 1648 - 1660[article]Final results of the Italian "Rete Dinamica Nazionale" (RDN) of Istituto Geografico Militare Italiano (IGMI) and its alignment to ETRF2000 / L. Baroni in Bulletin of geodesy and geomatics BGG, vol 68 n° 3 (October 2009)
[article]
Titre : Final results of the Italian "Rete Dinamica Nazionale" (RDN) of Istituto Geografico Militare Italiano (IGMI) and its alignment to ETRF2000 Type de document : Article/Communication Auteurs : L. Baroni, Auteur ; F. Cauli, Auteur ; G. Faroli, Auteur ; R. Maseroli, Auteur Année de publication : 2009 Article en page(s) : pp 289 - 315 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] European Terrestrial Reference System 1989
[Termes IGN] IGM95
[Termes IGN] Italie
[Termes IGN] réseau géodésique local
[Termes IGN] réseau géodésique permanent
[Termes IGN] Rete Dinamica Nazionale
[Termes IGN] station GPSRésumé : (Auteur) We present the general aspects, the main features and the final results of the Rete Dinamica Nazionale (RDN), the new geodetic reference frame system for Italy adopted from January 1th 2009. RDN which means National Dynamic Network is aligned to the most recent official realization of ETRS89, ETRF2000 at the epoch 2008.0. It will update the previous Italian realisation of ETRS89, materialized with the IGM95 frame. RDN consists of a network of 99 GPS permanent stations aligned to 13 IGS fiducial stations included in the ITRF2005 solution. The other stations were selected taking into account the homogeneous spatial distribution and the quality of location and equipment. The observation campaign lasts 28 days, from 23th December 2007 to 19th January 2008 and the data are daily files in RINEX format with 30 seconds sample rate. The computation was performed by the Data Processing Centre of the Geodetic Service of Istituto Geografico Militare Italiano (IGMI) and the processing strategy followed the standard procedures adopted by EUREF guidelines. The same computation also was performed independently by University of Padova (prof. Caporali) and by the G3 group in Milano (prof. Sanso) in order to test the results. In this article, we show all the processing steps until the final results and then all the comparisons with other data centers. Numéro de notice : A2009-569 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77996
in Bulletin of geodesy and geomatics BGG > vol 68 n° 3 (October 2009) . - pp 289 - 315[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013-09031 RAB Revue Centre de documentation En réserve L003 Disponible Monumentation of geodetic permanent GPS stations: processing of data download in the first year of observation / A. Cavinato in Geoinformatics, vol 12 n° 7 (01/10/2009)
[article]
Titre : Monumentation of geodetic permanent GPS stations: processing of data download in the first year of observation Type de document : Article/Communication Auteurs : A. Cavinato, Auteur ; M. Pollet, Auteur ; C. Bellio, Auteur ; R. Piol, Auteur Année de publication : 2009 Article en page(s) : pp 54 - 56 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] Alpes
[Termes IGN] déformation de la croute terrestre
[Termes IGN] réseau géodésique spécifique
[Termes IGN] risque naturel
[Termes IGN] station GPS
[Termes IGN] station permanente
[Termes IGN] surveillance géologiqueRésumé : (Editeur) The study of deformations and crustal dynamics has found in GPS technology a very valuable and flexible tool that can support and, in many cases, replace the traditional and complex geodetic measurements processed in long and expensive survey campaigns. The European Project Interreg III B ALPS GPS QuakeNet - Alpine Integrated GPS Network has aimed to be at the forefront in using this technology, distributing a network of permanent GPS stations on the Alps targeted at monitoring this highly-active seismic area. The study and processing of the data will permit crustal deformation models of the Alpine area to be confirmed or modified, with particular attention to seismogenetic areas for the prevention of seismic hazards. Copyright GEOinformatics Numéro de notice : A2009-435 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30066
in Geoinformatics > vol 12 n° 7 (01/10/2009) . - pp 54 - 56[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-09071 SL Revue Centre de documentation Revues en salle Disponible Le marégraphe de Marseille : patrimoine et modernité / Alain Coulomb in XYZ, n° 118 (mars - mai 2009)PermalinkMouvements verticaux des marégraphes par GPS / Emmanuel Bardiere (2009)PermalinkAlgerian permanent GPS network: first results / M. Haddad in Bulletin des sciences géographiques, n° 22 (octobre 2008)PermalinkChoix optimal du modèle troposphérique pour la détermination précise des coordonnées des stations GPS / Salem Kahlouche in Bulletin des sciences géographiques, n° 22 (octobre 2008)PermalinkComparaison du positionnement temps réel classique RTK et du positionnement GPS temps réel réseau : mise en oeuvre dans le réseau Orphéon / Laurent Morel in XYZ, n° 115 (juin - août 2008)PermalinkTeria, le Gers fête son récepteur fixe / Anne Fantuzzi in Géomètre, n° 2037 (mai 2007)PermalinkLyon entre topographie et GPS / Anonyme in Géomatique expert, n° 55 (01/03/2007)PermalinkRéseaux GPS temps réel centimétrique en concertation / Anne Fantuzzi in Géomètre, n° 2035 (mars 2007)PermalinkOS net: positioning accuracy at the heart of Great Britain / P. Cruddace in Geomatics World, vol 15 n° 1 (01/11/2006)PermalinkTeria capte l'attention / Anne Fantuzzi in Géomètre, n° 2031 (novembre 2006)Permalink