GEE python——Standardized precipitation evapotranspiration index(SPEI) (标准化降水蒸散指数(SPEI))

Continuous NDVI collection from AVHRR and MODIS

Import, authenticate and initialize the Earth Engine library.

import ee
ee.Authenticate()
ee.Initialize()

To authorize access needed by Earth Engine, open the following URL in a web browser and follow the instructions. If the web browser does not start automatically, please manually browse the URL below.

https://accounts.google.com/o/oauth2/auth?client_id=517222506229-vsmmajv00ul0bs7p89v5m89qs8eb9359.apps.googleusercontent.com&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fearthengine+https%3A%