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The swath of airborne or spaceborne sensors increases going from nadir to grazing observations. Especially radar altimeters relying on nadir observed backscatter signals are limited in swath. The forward scattered signals used in GNSS reflectometry (GNSS-R) allow to broaden the view for altimetry to grazing reflections. The anticipated GNSS Reflectometry, Radio Occultation and Scatterometry (GEROS-ISS)...
To study the sub-seasonal distribution and generation of ocean mass anomalies, Gravity Recovery and Climate Experiment (GRACE) observations of daily and monthly resolution are assimilated into a global ocean circulation model with an ensemble-based Kalman-Filter technique. The satellite gravimetry observations are processed to become time-variable fields of ocean mass distribution. Error budgets for...
We study the changes in ocean angular momentum which lead to changes in the Earth's rotation. The focus lies on the consistency of model, model-forcing and observations. To check this consistency an ensemble-based Kalman-Filter approach was applied to ocean angular momentum time series which we derived from Earth rotation observations. The filter propagates a reduced rank error-covariance matrix with...
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