Application for Extracting and Exploring Analysis Ready Samples (AρρEEARS)

The Application for Extracting and Exploring Analysis Ready Samples (AppEEARS) offers a simple and efficient way to access and transform geospatial data from a variety of federal data archives in an easy-to-use web application interface. AppEEARS enables users to subset geospatial data spatially, temporally, and by band/layer for point and area samples. AppEEARS returns not only the requested data, but also the associated quality values, and offers interactive visualizations with summary statistics in the web interface. This tutorial shows how to use AppEEARS to access ECOSTRESS version 2 data hosted in the cloud.

Step 1. Sign in

Sign in using your Earthdata login credentials. If you do not have an Earthdata account, please see the Workshop Prerequisites for guidance.
Figure caption: AppEEARS Sign In

Step 2. Extract the Sample

Select the Point or Area sample using Extract dropdown. we will be directed to Extract Area or Point Sample page.
1. Enter your sample name.
2. Upload your area of ineterst or draw a polygon on the leaflet map for area sample. for point sample, provide the CSV file including the lattitude and longitude coordinates. You can also use the map to manually select your locations or type them directly.
3. Select your time period of interest.
4. Add datasets you are interested in to your Selected Layers. You can choose from various data collections available in AppEEARS. you can click on the (i) icon for the dataset to see more details. In this example we are interested in the ECOSTRESS LSTE which is managed by the LP DAAC and made available from the NASA Earthdata Cloud archive hosted in AWS cloud. At the time of this workshop, only ECOSTRESS Level 1 and Level 2 swath data products are available in AppEEARS but Gridded and Tiled data will be added to AppEEARS in future.
5. For area sample, you can select your output file format. You also have an option to reproject all your layers to another coordinate reference system.
6. Now you can submit.

Figure caption: Extract area and point sample for ECOSTRESS data available in AWS cloud in AppEEARS

Once your request is complete, you can View and Download your results from the Explore Requets page.

Figure caption: Refine search

Step 3. Explore the outputs

From the Explore Requests page, click the View icon in order to view and interact with your results. This will take you to the View Area Sample page. Figure caption: View Sample Results

Step 4. Download the outputs

Finally navigate to Download Sample page by clicking the Download icon on the Explore Requests page or from View Sample pag to download your results. Besides your actual outputs, you will have access to supporting files including a text file with URLs to source data, JSON file you can use to recreate the same sample, decoded quality information, and CSV file with the layer statistics.

Figure caption: Download Sample Results

Check out AppEEARS help documentation for more details. If you wish to access AppEEARS programatically checkout AppEEARS API documenation.