Subsetting of the regions is made possible through SHBAAM (Satellite Hydrology Bits Analysis And Mapping)
Click the "Select a Region" dropdown and select an option
Or simply select the Global Map tab from the navigation pane
You have four options to choose from:
You have two options to choose from:
The Grace application allows the user to generate a time series plot for a specific location. To generate a time series:
Note: You can also click anywhere on the time series graph to change the layer shown on the map to a specific time. The time series can be exported in a number of formats by clicking the menu button on the chart(top-right).
We designed GGST to lower the level of technical knowledge required to interact with groundwater storage anomaly data from the GRACE mission data and provide the user with robust regional analysis capabilities. As part of making these data easier to access, it is important for users to understand the limitations and proper applications of these data. The data themselves are at a relatively coarse resolution, 1o latitude by 1o longitude, which are grid cells approximately 100 x 100 km, depending on the latitude of the study region. Even at this resolution, basing decisions on a single cell would involve large, unknown uncertainties as the GRACE data are collected at a coarser resolution, 3o latitude by 3o longitude, then processed to estimate the higher resolution TWSa data set. These data are best used to evaluate long-term regional trends, rather than evaluating local issues such as well placement. As with any remote sensing data, they should be validated with field data where possible. Even with these caveats, the GWa data set provides managers with important insights into their aquifers, helping them identify and study long-term regional trends and identify regions that are depleting, recharging, or sustainably using groundwater resources. GGST displays the uncertainties in the data calculations, described above, as error bands on the time series plots to provide context on regions or time periods where higher levels of uncertainty may exist.
External Resources and Links:
A Developers API is provided for those who wish to incorporate the GRACE Tethys APP data into their own separate application or script.
All API methods must be called using the following pattern:
See documentation and specific examples for all available methods below.
|Returns||A JSON object with a timeseries for a given point.|
|latitude||Latitude in WGS 84 projection||Any value on land within the GRACE Explorer Domain (-60,90)||Yes|
|longitude||Longitude in the WGS 84 projection||Any value within the GRACE Explorer Domain (-180,180)||Yes|
|storage_type||Storage type you wish to access||Use one of the following: (tws, sw, sm, gw)||Yes|