English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Book Chapter

Baltic sea mass variations from GRACE: comparison with In Situ and modelled sea level heights

Authors

Virtanen,  J.
External Organizations;

Mäkinen,  J.
External Organizations;

Bilker-Koivula,  M.
External Organizations;

Virtanen,  H.
External Organizations;

Nordman,  M.
External Organizations;

Kangas,  A.
External Organizations;

Johansson,  M.
External Organizations;

Shum,  C. K.
External Organizations;

Lee,  H.
External Organizations;

/persons/resource/wanglf

Wang,  Li-Feng
Deutsches GeoForschungsZentrum;

/persons/resource/mthomas

Thomas,  Maik
1.3 Earth System Modelling, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in GFZpublic
Supplementary Material (public)
There is no public supplementary material available
Citation

Virtanen, J., Mäkinen, J., Bilker-Koivula, M., Virtanen, H., Nordman, M., Kangas, A., Johansson, M., Shum, C. K., Lee, H., Wang, L.-F., Thomas, M. (2010): Baltic sea mass variations from GRACE: comparison with In Situ and modelled sea level heights. - In: Mertikas, S. P. (Ed.), Gravity, Geoid and Earth Observation: IAG Commission 2: Gravity Field, Chania, Crete, Greece, 23-27 June 2008, (International Association of Geodesy Symposia; 135), Springer, 571-577.
https://doi.org/10.1007/978-3-642-10634-7_76


https://gfzpublic.gfz-potsdam.de/pubman/item/item_245417
Abstract
The monthly variation in the water mass of the semi-enclosed Baltic Sea is about 60 Gt RMS over an area of 390000km2 . The Baltic has a dense network of tide gauges (TGs), and several high-resolution regional hydrodynamic models, making it one of the best-monitored seas for mass variations of this size in the world. We investigate the performance of different GRACE gravity field solutions to recover this oceanic mass variation using in situ measurements of sea-level heights. For GRACE, we use both the standard monthly solutions as well as regional solutions to estimate the total water storage in the Baltic Sea. For the “ground truth”, we use sea-level measurements in the network of tide gauges around the Baltic Sea. For comparison, we have access to data from two hydrodynamic models. The water mass estimated from the constructed sea surfaces is then compared with different GRACE estimates. At present, we ignore the steric anomalies, as they are small in the Baltic Sea. We also discuss the “leakage” between land hydrology and the Baltic Sea in the GRACE estimates of water storage.