Uncovered spurious jumps in the GRACE atmospheric de-aliasing data: potential contamination of GRACE observed mass change
Summary In Gravity Recovery and Climate Experiment (GRACE) data processing, the effect
of high-frequency mass variations in the atmosphere and ocean is taken into account during
temporal gravity field modelling to minimize temporal and spatial signal aliasing. We find two
spurious jumps in the atmosphere and ocean de-aliasing level-1b (AOD1B) data product,
which occurred from January to February in both 2006 and 2010. These jumps attain about
7 cm of equivalent water thickness (EWT) change in some regions including the Qinghai …
of high-frequency mass variations in the atmosphere and ocean is taken into account during
temporal gravity field modelling to minimize temporal and spatial signal aliasing. We find two
spurious jumps in the atmosphere and ocean de-aliasing level-1b (AOD1B) data product,
which occurred from January to February in both 2006 and 2010. These jumps attain about
7 cm of equivalent water thickness (EWT) change in some regions including the Qinghai …
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