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hw1_patrick_seidel_sentinel5p_no2 #1

@PaSeidel

Description

@PaSeidel

hw1_patrick_seidel_sentinel5p_no2

Task Summary

For Homework 1, I will work with Sentinel-5P TROPOMI tropospheric NO₂ data accessed through the Copernicus Data Space Ecosystem (CDSE) using the Sentinel Hub Process API. The goal is to develop a clear and reproducible workflow that downloads a scientifically reusable subset of NO₂ data and demonstrates a small example analysis.

Dataset Choice

Sentinel-5P provides global daily measurements of atmospheric pollutants. Tropospheric NO₂ is well-studied in relation to anthropogenic activity, which makes it suitable for a simple but meaningful demonstration such as examining changes during the COVID-19 lockdown period. I will not work with raw L1/L2 data (too large and complex for this assignment) but instead download daily gridded NO₂ mosaics via the Process API. This represents a reasonable trade-off: the data are not overly processed like weekly summaries from the Statistical API, but still usable for later scientific experiments.

Planned Work

  • Document search and evaluation of available Sentinel-5P NO₂ data sources within the CDSE.
  • Implement a Jupyter notebook that:
    • Sets up API access via Sentinel Hub.
    • Downloads a test dataset (e.g., several daily mosaics for a European metropolitan region).
    • Saves data in GeoTIFF or NetCDF format for later reuse.
    • Performs a simple inspection/dummy analysis (e.g., daily averages or a small COVID-19 comparison plot).
  • Create a README documenting data access, dataset description, API usage, and scalability considerations.

This issue will later be linked in the pull request when submitting the homework.

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