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Estimate water quality parameters from multispectral satellite imagery using red and green bands, optionally NIR/SWIR, for analysis and report generation.
## Prerequisites / 先准备 X 文件 > ⚠️ **必读** — 本 skill 不属于即用型,需要先准备特定文件才能跑。 本 skill 需要 **红光 + 绿光**两个波段栅格(GeoTIFF)。NIR/SWIR 可选。 👉 完整教程见仓库根目录 `PREREQUISITES.md` 1.8 节。 **先准备 X 文件**:从 Sentinel-2 提取 2-4 个波段,或 `--bbox` 让 skill 自动下载。 快速试跑命令: ```bash python water_quality_remote_sensing.py --bbox 116,39,117,40 --date-range 2024-06-01,2024-06-30 --output-dir ./wq ``` --- name: water-quality-remote-sensing description: > Estimate water quality parameters from multispectral satellite imagery. Use when the user wants to analyze changes, compare multi-temporal rasters, compute indices, or generate assessment reports. --- # Water Quality Remote Sensing Estimate water quality parameters from multispectral satellite imagery. ## CLI Usage ```bash python scripts/water_quality_remote_sensing.py --red red.tif --green green.tif python scripts/water_quality_remote_sensing.py --red red.tif --green green.tif --nir nir.tif --swir swir.tif python scripts/water_quality_remote_sensing.py --red red.tif --green green.tif --output-dir my_output ``` ## Parameters | Argument | Required | Default | Description | |---|---|---|---| | `--red` | Yes | — | Path to red band raster (≈ 0.6–0.7 μm) | | `--green` | Yes | — | Path to green band raster (≈ 0.5–0.6 μm) | | `--nir` | No | — | Optional NIR band raster (≈ 0.8–0.9 μm, enables NDWI / NDVI-based products) | | `--swir` | No | — | Optional SWIR band raster (≈ 1.6–2.2 μm, enables turbidity proxies) | | `--output-dir`, `-o` | No | `water-quality-output` | Directory to write outputs | ## Output | File | Description | |---|---| | `water-quality-report.json` | Machine-readable water quality indices | | `report.html` | Human-readable HTML report | | `output-manifest.json` | Run metadata + result summary | ## Exit Codes | Code | Meaning | |---|---| | 0 | Success | | 2 | Argument error (e.g. missing input file) | | 7 | Processing failure | ## 数据下载 本 skill 可自动从 Microsoft Planetary Computer 下载数据 (无需 API key): ```bash python water_quality_remote_sensing.py --bbox 116,39,117,40 --date-range 2024-06-01,2024-06-30 --output-dir <tmp> ``` - `--bbox W,S,E,N`: WGS-84 边界框 (西, 南, 东, 北) - `--date-range START,END`: 日期范围 (YYYY-MM-DD,YYYY-MM-DD) - `--aoi-file <path.geojson>`: 替代 --bbox 的 GeoJSON 多边形 - `--cache-dir <path>`: 缓存目录 (默认 ~/.geoskill_cache) 当用户只给 `--bbox + --date-range` (没有 `--red`) 时,skill 自动下载数据。 当用户给 `--red` 时,走原文件路径 (向后兼容)。
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