Статья

Assessment of Gravity Recovery and Climate Experiment (GRACE) temporal signature over the upper Zambezi

Hessel WinsemiusDepartment of Water Management Delft University of Technology Delft NetherlandsH. H. G. SavenijeDepartment of Water Management Delft University of Technology Delft NetherlandsNick van de GiesenDepartment of Water Management Delft University of Technology Delft NetherlandsBart van den HurkRoyal Netherlands Meteorological Institute De Bilt NetherlandsE. A. ZapreevaDepartment of Physical and Space Geodesy Delft University of Technology Delft NetherlandsR. KleesDepartment of Physical and Space Geodesy Delft University of Technology Delft Netherlands

2006en

ABI

Аннотация

The temporal signature of terrestrial storage changes inferred from the Gravity Recovery and Climate Experiment (GRACE) has been assessed by comparison with outputs from a calibrated hydrological model (lumped elementary watershed (LEW)) of the upper Zambezi and surroundings and an inspection of the within‐month ground track coverage of GRACE together with spatial‐temporal rainfall patterns. The comparison of the hydrological model with GRACE reveals temporal inconsistencies between both data sets. Because the LEW model has been calibrated and validated with independent data sources, we believe that this is a GRACE artifact. The within‐month ground track coverage shows an irregular orbit behavior which may well cause aliasing in the GRACE monthly deconvolutions. This aliasing is the most probable cause of observed temporal inconsistencies between GRACE and other data sets.

Перевод пока недоступен

Идентификаторы

DOI: 10.1029/2006wr005192

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar