The Arctic Ice Mapping group (Project AIM) at the NASA Goddard Space Flight Center Wallops Flight Facility has been conducting systematic topographic surveys of the Greenland Ice Sheet (GIs) since 1993, using scanning airborne laser altimeters combined with Global Positioning System (GPS) technology onboard NASA's P-3 aircraft. Flight lines have covered all major ice drainage basins, with repeating surveys after a 5-year interval during the decade of the 90's. Analysis of this data documented significant thinning in many areas near the ice sheet margins and an overall negative mass balance of the GIS (Science, 2000). In 2001, 2002, and 2003 many of these flight lines were re-surveyed, providing evidence of continued or accelerated thinning in all observed areas around the margin of the GIs. Additionally, however, a highly-anomalous snowfall was observed between 2002 and 2003 in SE Greenland - perhaps an indicator of a shift in the regional climate?


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Recent Observations of Increased Thinning of the Greenland Ice Sheet Measured by Aircraft GPS and Laser Altimetry


    Beteiligte:

    Kongress:

    SPIE 4th International Symposium ; 2004 ; Honolulu, HI, United States


    Erscheinungsdatum :

    2004-01-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Recent Ice Sheet and Glacier Elevation Changes in Greenland from Aircraft Laser Altimetry

    Krabill, William B. / Thomas, R. / Sonntag, J. et al. | NTRS | 2008


    Aircraft ocean altimetry : recent results

    Lowe, Stephen T. / Cardellach, Estell / Muellerschoen, Ronald et al. | NTRS | 2003



    Merging of elevations from SAR interferometry, satellite altimetry GPS & laser altimetry in Greenland

    Nielsen, C. S. / European Space Agency | British Library Conference Proceedings | 1997


    Elevation Time Series over Greenland Ice Sheet from Satellite Radar Altimetry

    Khvorostovsky, K. / European Space Agency | British Library Conference Proceedings | 2010