DEOS Mass Transport model release 1 (DMT-1)
X. Liu, C. Siemes, H. Hashemi, R. Klees, E. Revtova, Q. Zhao (research team)
P. Ditmar (coordinator)
The DEOS Mass Transport model release 1 (DMT-1) is now available. The model is computed on the basis of the Gravity And Climate Experiment (GRACE) data. In total 72 monthly solutions covering the time interval from Feb. 2003 to Feb. 2009 (exculding Jun. 2003) are computed. The solutions represent a mean deviation of the gravity field in a given month from a reference field, namly EIGEN-GL04C. More details about DMT-1 can be found in the description document. Each solution is presented in three different ways:
- Spherical harmonic coefficients (Stokes coefficients, 4-pi-normalized) up to degree and order 120
- Grids of equivalent water layer thickness (in meter)
- JPG pictures of equivalent water layer thickness (for convenience)
This animation demonstrates the high spatial resolution of the DMT-1 model. There are also two videos available for download. The first (11 MB) shows the DMT-1 model using the same map projection as in the image above, while the second (13 MB) uses a perspective projection in combination with light effects which makes the video look more spectacular.
Downloads:
Spherical harmonic coefficients (2003)
Spherical harmonic coefficients (2004)
Spherical harmonic coefficients (2005)
Spherical harmonic coefficients (2006)
Spherical harmonic coefficients (2007)
Spherical harmonic coefficients (2008)
Spherical harmonic coefficients (2009)
JPG pictures of water thickness (2003)
JPG pictures of water thickness (2004)
JPG pictures of water thickness (2005)
JPG pictures of water thickness (2006)
JPG pictures of water thickness (2007)
JPG pictures of water thickness (2008)
JPG pictures of water thickness (2009)
References:
- R. Klees, E. A. Revtova, B. C. Gunter, P. Ditmar, E. Oudman, H. C. Winsemius, and H. H. G. Savenije(2008) The design of an optimal filter for monthly GRACE gravity models. Geophysical Journal International, 175, Issue 2, pages 417-432.
- X. Liu (2008) Global gravity field recovery from satellite-to-satellite tracking data with the acceleration approach. PhD Thesis, Netherlands Geodectic Commision, Publication on Geodesy 68, Delft, The Netherlands. (download page)
