Thu Apr 10, F. Flechtner
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Bahrami, Ala, Go\"ıta, Kalifa, and Magagi, Ramata, 2020. Analysing the contribution of snow water equivalent to the terrestrial water storage over Canada. Hydrological Processes, 34(2):175–188, doi:10.1002/hyp.13625.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2020HyPr...34..175B,
author = {{Bahrami}, Ala and {Go{\"\i}ta}, Kalifa and {Magagi}, Ramata},
title = "{Analysing the contribution of snow water equivalent to the terrestrial water storage over Canada}",
journal = {Hydrological Processes},
year = 2020,
month = jan,
volume = {34},
number = {2},
pages = {175-188},
abstract = "{In this study, the spatial and temporal variabilities of terrestrial
water storage anomaly (TWSA) and snow water equivalent anomaly
(SWEA) information obtained from the Gravity Recovery and
Climate Experiment (GRACE) twin satellites data were analysed in
conjunction with multisource snow products over several basins
in the Canadian landmass. Snow water equivalent (SWE) data were
extracted from three different sources: Global Snow Monitoring
for Climate Research version 2 (GlobSnow2), Advanced Microwave
Scanning Radiometer-Earth Observing System (AMSR-E), and
Canadian Meteorological Centre (CMC). The objective of the study
was to understand whether SWE variations have a significant
contribution to terrestrial water storage anomalies in the
Canadian landmass. The period was considered from December 2002
to March 2011. Significant relationships were observed between
TWSA and SWEA for most of the 15 basins considered (53\% to 80\%
of the basins, depending on the SWE products considered). The
best results were obtained with the CMC SWE products compared
with satellite-based SWE data. Stronger relationships were found
in snow-dominated basins (Rs > = 0.7), such as the Liard [root
mean square error (RMSE) = 21.4 mm] and Peace Basins (RMSE =
26.76 mm). However, despite high snow accumulation in the north
of Quebec, GRACE showed weak or insignificant correlations with
SWEA, regardless of the data sources. The same behaviour was
observed in the Western Hudson Bay basin. In both regions, it
was found that the contribution of non-SWE compartments
including wetland, surface water, as well as soil water storages
has a significant impact on the variations of total storage.
These components were estimated using the Water-Global
Assessment and Prognosis Global Hydrology Model (WGHM)
simulations and then subtracted from GRACE observations. The
GRACE-derived SWEA correlation results showed improved
relationships with three SWEA products. The improvement is
particularly important in the sub-basins of the Hudson Bay,
where very weak and insignificant results were previously found
with GRACE TWSA data. GRACE-derived SWEA showed a significant
relationship with CMC data in 93\% of the basins (13\% more than
GRACE TWSA). Overall, the results indicated the important role
of SWE on terrestrial water storage variations.}",
doi = {10.1002/hyp.13625},
adsurl = {https://ui.adsabs.harvard.edu/abs/2020HyPr...34..175B},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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