Gridded loading
Mass loading can be computed on a regular grid. However, a great care
should be taken when gridded loading is considered for characterizing
displacement at a given station. Loading near the coast line is changing
rapidly and interpolation errors may be significant. As a rule of thumb,
loading at a station that is closer than the distance of three times the
grid resolution should not be used. That means if a station
is closer than 300 km from the shore, a grid loading at the 1°×1°
resolution is not suitable for data reduction. The interpolation errors
can reach 30% at a distance less than 80 km to the coastline when loading
at the 0.25°×0.25° grid is used. See L. Petrov,
"The International Mass Loading Service", submitted 2015
(arxiv.org/abs/1503.00191)
for illustrations of interpolation errors.
What to do if my station of interest is not in the list of station
for which loading was precomputed? Please use the ondemand loading
service.
Then, why the gridded loading is computed? It is computed mainly for
computing integrals of loading over the Earth or a region of interest
and for visualization.
Back to the loading displacement
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This page was prepared by Leonid Petrov
(
)
Last update: 2021.09.10_17:31:41