CIROH-UA/NGIAB_data_preprocess

Reformatting AORC and NWM retrospective

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#217 opened on Jun 8, 2026

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enhancementgood first issue

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Description

It would greatly speed up processing time to reformat the AORC and NWM rasters (zarrs) to per-catchment Parquet files.

Contributor guide

Research direction
Investigate the current AORC and NWM raster format (likely Zarr) and implement conversion to per catchment Parquet files using Python libraries such as pandas and xarray.
Tech stack
pythonpandas
Domain
data
Issue type
Performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Python
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65