Quick Start
Here is a recipe for getting MODIS NDVI.
Access
ndvi.modis denotes NDVI at 250m resolution generated from the MODIS constellation. MODIS has a daily revisit cycle. Access it by setting variable to a list that includes ndvi.modis. For example:
ndvi_request = {
'variable': ['ndvi.modis'],
'space': [[-90.72529, 40.67410]], # Single US corn farm
'time': {
'start':'2019',
'end':'2022',
}
}
Output
Sample Output
| time | point | lat | lon | ndvi.sentinel2 | qa.sentinel2 |
|---|---|---|---|---|---|
| 2019-01-01 | 0 | -90.72529 | 40.67410 | 0.622241 | 1.0 |
| 2019-01-02 | 0 | -90.72529 | 40.67410 | 0.654261 | 1.0 |
Field Definitions
| Column | Description |
|---|---|
| time | The date of the NDVI measurement. (UTC) |
| point | an integer identifier unique to each location in the request |
| lat, lon | the latitude and longitude |
| ndvi.modis | NDVI |
| qa.modis | a floating point number where 1.0 indicates the NDVI value is valid; 0.0 indicates it is invalid (because no good image was available that day.) |