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| Titel |
The International Soil Moisture Network: a data hosting facility for global in situ soil moisture measurements |
| VerfasserIn |
W. A. Dorigo, W. Wagner, R. Hohensinn, S. Hahn, C. Paulik, A. Xaver, Alexander Gruber, M. Drusch, S. Mecklenburg, P. Oevelen, A. Robock, T. Jackson |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 15, no. 5 ; Nr. 15, no. 5 (2011-05-30), S.1675-1698 |
| Datensatznummer |
250012796
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| Publikation (Nr.) |
 copernicus.org/hess-15-1675-2011.pdf |
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| Zusammenfassung |
| In situ measurements of soil moisture are invaluable for calibrating and
validating land surface models and satellite-based soil moisture retrievals.
In addition, long-term time series of in situ soil moisture measurements
themselves can reveal trends in the water cycle related to climate or land
cover change. Nevertheless, on a worldwide basis the number of
meteorological networks and stations measuring soil moisture, in particular
on a continuous basis, is still limited and the data they provide lack
standardization of technique and protocol. To overcome many of these
limitations, the International Soil Moisture Network (ISMN; http://www.ipf.tuwien.ac.at/insitu) was initiated to serve as a
centralized data hosting facility where globally available in situ soil
moisture measurements from operational networks and validation campaigns are
collected, harmonized, and made available to users. Data collecting networks
share their soil moisture datasets with the ISMN on a voluntary and no-cost
basis. Incoming soil moisture data are automatically transformed into common
volumetric soil moisture units and checked for outliers and implausible
values. Apart from soil water measurements from different depths, important
metadata and meteorological variables (e.g., precipitation and soil
temperature) are stored in the database. These will assist the user in
correctly interpreting the soil moisture data. The database is queried
through a graphical user interface while output of data selected for
download is provided according to common standards for data and metadata.
Currently (status May 2011), the ISMN contains data of 19 networks and more
than 500 stations located in North America, Europe, Asia, and Australia.
The time period spanned by the entire database runs from 1952 until the
present, although most datasets have originated during the last decade. The
database is rapidly expanding, which means that both the number of stations
and the time period covered by the existing stations are still growing.
Hence, it will become an increasingly important resource for validating and
improving satellite-derived soil moisture products and studying climate
related trends. As the ISMN is animated by the scientific community itself,
we invite potential networks to enrich the collection by sharing their in
situ soil moisture data. |
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