Water Balance App

The Water Balance App is a web based mapping application that is used to explore and visualize the worldwide climate data that have been collected since January 2000 to present, this climate record is maintained by NASA through it's Global Land Data Assimilation System (GLDAS), and is updated each month as new data becomes available.. Learn more here.

View it live

Features

Click anywhere on the map to see how a chosen variable has changed over time, and click anywhere on the main graph (on the center) to switch the map to that month of interest.
The water balance panel (on the left) shows how much recharge or depletion occurred during your chosen month, and how this compares to what’s normal.
The trend analyzer panel (on the right) shows how your chosen variable was different in the same month during other years. This panel also allows you to see the seasonal variation during a normal year (by graphing the average for each month) or aggregate the time series into annual time steps to see the long term trend more clearly.

Instructions

To begin, clone this repository to your computer, from the project's root directory, install the required packages (dependencies):

npm install

Running the app

Now you can start the webpack dev server to test the app on your local machine:

# it will start a server instance and begin listening for connections from localhost on port 8080
npm run start

Deployment

To build/deploye the app, you can simply run:

# it will place all files needed for deployment into the /build directory 
npm run build

Requirements

Resources

Five variables from GLDAS are available as image services through ArcGIS Living Atlas of the World: precipitation, runoff, evapotranspiration, soil moisture, and snowpack.
NASA's Global Land Data Assimilation System
Noah land surface model
Water Balance App Blog Post

Issues

Find a bug or want to request a new feature? Please let us know by submitting an issue.

Contributing

Esri welcomes contributions from anyone and everyone. Please see our guidelines for contributing.

Licensing

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

A copy of the license is available in the repository's license.txt file.

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