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- [Source: ESA CryoSat home page, http://www.esa.int/esaLP/ESAOMH1VMOC_LPcryosat_0.html ] ESA’s Earth Explorer CryoSat mission, launched on 8 April 2010, is dedicated to precise monitoring of the changes in the thickness of marine ice floating in the polar oceans and variations in the thickness of the vast ice sheets that overlie Greenland and Antarctica. With the effects of a changing climate fast becoming apparent, particularly in the polar regions, it is increasingly important to understand exactly how Earth’s ice fields are responding. Diminishing ice cover is frequently cited as an early casualty of global warming and since ice, in turn, plays an important role regulating climate and sea level, the consequences of change are far reaching. For some years now, satellites such as ESA’s Envisat have been mapping the extent of ice cover. As stated in the Climate Change 2007 Synthesis Report by the Intergovernmental Panel on Climate Change, “Satellite data since 1978 show that annual average Arctic sea-ice extent has shrunk by 2.7% per decade.” However, this is only part of the picture.
In order to understand fully how climate change is affecting these remote but sensitive regions, there remains an urgent need to determine exactly how the thickness of the ice, both on land and floating in the sea, is changing. By addressing this challenge, the data delivered by the CryoSat mission will complete the picture and lead to a better understanding of the role ice plays in the Earth system. The CryoSat-2 satellite replaces the original CryoSat, which was lost owing to a launch failure in October 2005. Following the loss, the mission was judged to be even more important than when it was first selected for development, and the decision to rebuild was taken. Almost exactly four years to the day after that decision, the new CryoSat-2, with a number of improvements, was ready for launch. Group: Platform_Details Entry_ID: CRYOSAT-2 Group: Platform_Identification Platform_Category: Earth Observation Satellites Platform_Series_or_Entity: Earth Explorers Short_Name: CRYOSAT-2 End_Group Group: Platform_Associated_Instruments Short_Name: LRR Short_Name: DORIS End_Group Group: Orbit Orbit_Altitude: 717 km Orbit_Inclination: 92 deg Repeat_Cycle: 369 days with 30 day sub-cycle Orbit_Type: LEO > Low Earth Orbit > Polar Non-Sun-Synchronous End_Group Creation_Date: 2010-05-07 Online_Resource: http://www.esa.int/esaLP/LPcryosat.html Sample_Image: http://esamultimedia.esa.int/images/EarthObservation/cryosat/4_sar_hz31_H.jpg Group: Platform_Logistics Launch_Date: 2010-04-08 Launch_Site: Plesetsk Cosmodrome, Russia Design_Life: 3 Years Primary_Sponsor: ESA End_Group End_Group
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