Some of my Current Research Projects
Here I provide access to public material related to research projects
that are currently under way. The projects are
intended to improve the models describing the changes in
Earth's shape, gravity field and rotation induced
by surface loads. Currently, the list of projects includes:
- Towards a standard model of present-day signals due to
post-glacial rebound: This is a project carried out in the
frame of the SBL.
A Call for Submission of predictions of the present-day
post-glacial rebound signal (PGS) in geodetic quantities
was issued by the SBL in February 2005. In response, the SBL
received a number of submission which the authors agreed to make freely
available through the SBL web pages. I am currently in the
process of intercomparing these predictions as well as comparing them
to geodetic observations. The model predictions are available at
the PGS Project
page. The intercomparisons are available at my
- A Global Integrated Model of Surface Loads on the Earth (AGILE):
The goal of this project is to set up a comprehensive model of
surface loads, including atmosphere, ocean, terrestrial hydrosphere,
cryosphere as well as man-made loads such reservoirs and de-loading due
to mining and oil and ground water extraction. The project aims at a high
spatial and temporal resolution for the last 20 years, medium resolution
for the last 50 years and even less for the last 100 years. Currently,
this project is in the early phase of defining the data description language
for the load models. More information is available at the AGILE page.
- A proposal for the treatment of atmospheric loading in
space-geodetic analysis: The IERS Conventions currently do not contain
a clear recommendation of how to account for atmospheric
loading in the determination of the ITRF as well as in the
computation of products giving access to the ITRF. A key question
is whether for daily or weekly analyses, the loading should be
included at the observation level or whether the inclusion in
the reference frame alignment of the solution is sufficient. The
answer to this question depends on the statistical properties of the load.
the statistical properties of the atmospheric load are currently
studied on the basis of the ERA40 dataset. The ultimate goal
of the project is to provide a detailed and easily applicable algorithm for the
inclusion of atmospheric loading in the Conventions (see the project page "Atmospheric loading in IERS Conventions)".
- Local sea level changes: Local Sea Level (LSL) changes are expected to be one of the
major impact of climate change. Understanding the forcing of coastal LSL variations and developing the
capability to provide predictions of future LSL changes is therefore of vital interest for mitigation
of climate change impacts and the planning of coastal protection. Presentations related to this issue
are available at the project page.
Contributions from interested scientists to any of these projects are welcome. In order to contribute, please send mail to email@example.com. Comments on any of the projects can be submitted using the form below.