Description: Das Projekt "Ice Sheet Mass Balance Inter-comparison Exercise (IMBIE)" wird vom Umweltbundesamt gefördert und von Technische Universität München, Institut für Astronomische und Physikalische Geodäsie durchgeführt. IMBIE is a first joint initiative of ESA and NASA aimed at resolving the apparent disagreement between geodetic estimates of ice sheet mass balance determined using the three satellite geodetic techniques of altimetry, interferometry, and gravimetry. There remains poor agreement between estimates of ice sheet mass balance, and the consequent global sea level contribution, as determined using the three satellite geodetic techniques of altimetry, interferometry, and gravimetry. All three methods are technically sound; the disagreement arises due to differences in their spatial and temporal sampling and the impact and accounting of fluctuations in surface mass accumulation. The IPCC have expressed concern that progress will not be made in the run up to the fifth assessment report; in their 2010 report on sea level rise and ice sheet instabilities this disagreement was highlighted as a primary emerging topic and the value of inter-comparison projects was explicitly noted. Both the scientific community and international space agencies have a vested interest in resolving this matter. The Ice Sheet Mass Balance Inter-Comparison Exercise (IMBIE) is a first joint-initiative of the European Space Agency and the US National Aeronautics and Space Administration aimed at resolving the apparent disagreement between geodetic estimates of ice sheet mass balance. The project has two key objectives: 1. To provide an understanding as to why geodetic estimates o ice sheet mass changes differ 2. To provide a reconciled geodetic estimate of ice sheet mass balance. IMBIE will achieve this through a coordinated exercise where estimates of ice sheet mass balance are developed from all three geodetic techniques using a common spatial and temporal reference frame and a common appreciation of the contributions due to external signals. The project brings together the laboratories and space agencies that have been instrumental in developing independent estimates of ice sheet mass balance to date.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: München ? Interferometrie ? Eisschild ? Fernerkundungsdaten ? Gravimetrie ? Meeresspiegelanstieg ? Satellit ? Geoinformation ? Geodaten ? Geodäsie ? Meeresspiegel ? Stoffbilanz ? Trittschall ? Umweltinformation ? Satellitenfernerkundung ? Anreicherung ? Fernerkundung ? Globale Aspekte ?
Region: Bayern
Bounding box: 12.53381° .. 12.53381° x 47.795° .. 47.795°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2011-08-01 - 2012-07-31
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