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[[User Guide | [Home]]] - [[Observations| [Observations]]] <br/>

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|style="background-color: orange;" |Layer name
|style="background-color: orange;"| Total Water Storage Anomaly Map (GDO)
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|Tag
|Flood
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|Folder
|Eo Satellite
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|Source
|[https://extwiki.eodc.eu/GFM/PUM/Products/Likelihood-Values Uncertainty values]
|-
|Description
|The Total Water Storage (TWS) Anomaly indicator that is implemented in the Copernicus Global
Drought Observatory (GDO) is used for determining the occurrence of long-term hydrological
drought conditions, which arise when the TWS reaches values lower than usual. This quantity is
often used as a proxy of groundwater drought. The TWS Anomaly indicator in GDO is computed as
anomalies of GRACE-derived TWS data - which are produced by the Center for Space Research (CSR)
at the University of Texas at Austin, as scaled by the NASA Jet Propulsion Laboratory (JPL) (available
at: [https://podaac-tools.jpl.nasa.gov/drive/files/allData/tellus/L3/gracefo/land_mass/RL06/ JPL Nasa]).
Details on the comparison between this dataset and multiple timescale SPI can be find in
Cammalleri et al. (2019)
The Total Water Storage (TWS) is the sum of all above and below surface water storages, including
canopy water, rivers and lakes, soil moisture and groundwater, and it represents a synthetic proxy
of the dynamic of slow-responding hydrological quantities. The TWS remote estimates from the
GRACE-FO pair of satellites are used to compute the anomaly from the climatological reference
period (2002-2018), and it is updated monthly, with a latency of about 45 days. The TWS Anomaly
indicator is used to detect and monitor long-term hydrological drought, which complements more
fast-responding indicators, such as soil moisture and streamflow droughts.
For further information see the [https://edo.jrc.ec.europa.eu/documents/factsheets/factsheet_grace_tws_anomaly.pdf GRACE Factsheet]
|-
|Screenshot
|[[File: GRACE.png |1000px|thumb|centre|]]
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|style="background-color: grey;"| Properties
|style="background-color: grey;"|
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|Available variables
| Water Storage Anomaly
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|Available accumulations
|
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|Available interpolation algorithms
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|Available filters
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|Spatial aggregations
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[[User Guide | [Home]]] - [[Observations| [Observations]]]

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 |Source
-|[https://extwiki.eodc.eu/GFM/PUM/Products/Likelihood-Values Uncertainty values]
+|[https://edo.jrc.ec.europa.eu/documents/factsheets/factsheet_grace_tws_anomaly.pdf GRACE]
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 |Description

GRACE(eng) - Revision history

Admin at 10:28, 4 August 2022

Admin: Created page with " [Home] - [Observations] {| class="wikitable" |- |style="background-color: orange;" |Layer name |style="background-color: orange;"| T..."

Admin: Created page with " [Home] - [Observations]
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