---
title: "Meteorological method"
pagetitle: "Meteorological method — MeteoAndes"
description: "Integration of local stations, ERA5-Land, ERA5 and CHIRPS."
image: ../../assets/img/og/investigacion.jpg
lang: en
header-includes: |
<link rel="alternate" hreflang="es" href="https://meteoandes.com/metodos/meteorologia.html">
<link rel="alternate" hreflang="en" href="https://meteoandes.com/en/methods/meteorology.html">
<link rel="alternate" hreflang="x-default" href="https://meteoandes.com/metodos/meteorologia.html">
format:
html:
code-tools: true
code-fold: true
---
## Spatial extraction
Grid cells are weighted by their intersection area with the glacier AOI. Each year exports weights, coverage, a daily table, monthly summary and visual panel.
```python
weighted_mean = (cell_value * intersection_area).sum() / intersection_area.sum()
```