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Author |
Cyril Palerme, Chantal Claud, Norman B. Wood, Tristan L’Ecuyer, Christophe Genthon |
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Title |
How Does Ground Clutter Affect CloudSat Snowfall Retrievals Over Ice Sheets? |
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Year  |
2018 |
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IEEE Geoscience and Remote Sensing Letters |
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16 |
Issue |
3 |
Pages |
342-346 |
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Keywords |
Antarctica atmospheric temperature climatology clouds Clouds CloudSat CloudSat products CloudSat retrievals CloudSat snowfall observations CloudSat snowfall retrievals Clutter glaciology ground clutter ground clutter contamination ice Ice ice sheets land/ice surface meteorological radar remote sensing by radar snow Snow snowfall snowfall climatologies snowfall rate spaceborne radar spaceborne snowfall observations Surface contamination Surface topography |
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Abstract |
CloudSat has provided the first spaceborne snowfall observations in polar regions. Nevertheless, CloudSat retrievals may be affected by ground clutter even if the snowfall rate at the surface is estimated from the reflectivity measured at about 1200 m above land/ice surface. In this study, the impact of ground clutter contamination on CloudSat snowfall retrievals over the Antarctic and Greenland ice sheets is investigated. Our results suggest that ground clutter affects CloudSat snowfall observations over some areas, particularly over complex terrain such as mountain ranges and fjords. Over these areas, the snowfall rates deduced from CloudSat observations can be, therefore, significantly overestimated. This has implications when developing snowfall climatologies from CloudSat products. |
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1013 |
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ISSN |
1558-0571 |
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1558-0571 |
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yes |
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7481 |
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