Geoskill: VIIRS Nightlights Download
Download VIIRS nighttime light composite data (annual or monthly) with optional regional bounding box from EOG/NOAA VNL and NASA LAADS sources.
ruiduobao
@ruiduobao
What This Skill Does
Downloads VIIRS nighttime light composite data (annual and monthly) from public sources like EOG/NOAA VNL and NASA LAADS, with support for bounding-box regional subsetting.
Replaces manual downloading and subsetting of large satellite imagery datasets from multiple government portals by providing a single CLI tool with search and bbox filtering.
When to Use It
- Download annual VIIRS nightlight composites for a specific year
- Fetch monthly nightlight data for a given month and year
- Subset a regional area of nightlight data using bounding box coordinates
- Search available VIIRS products by year and product type before downloading
- Batch download multiple years of nightlight data for time-series analysis
Install
$ openclaw skills install @ruiduobao/viirs-nightlights-downloadVIIRS Nightlights Downloader
Download VIIRS nighttime light composite data from public sources (EOG/NOAA VNL, NASA LAADS).
Credentials
EOG (Earth Observation Group, Colorado School of Mines) requires a free account for VNL v2.2 direct download since 2025. The skill does not authenticate on your behalf; use --list-urls to get the JSON of URLs, then download manually with wget --user EOG_USER --password '…'.
Optional EOG credentials (for future auto-download):
- EOG_USERNAME / EOG_PASSWORD env vars
- ~/.netrc entry for machine eogdata.mines.edu
- Default (geoskill-core credentials.py): empty — register first
Register at https://eogdata.mines.edu/register/ (free, 1-2 days approval).
Usage
# Search available data
python viirs-nightlights-download.py search --year 2023 --product annual
# Download global annual composite
python viirs-nightlights-download.py download --year 2023 --product annual -o output/
# Download monthly composite
python viirs-nightlights-download.py download --year 2023 --product monthly --month 6 -o output/
# Download regional subset by bbox
python viirs-nightlights-download.py download --year 2023 --product annual --bbox 100,20,120,40 -o output/
Products
annual: Annual cloud-free composite (VNL v2)monthly: Monthly composite
Year Range
2012 - 2024
Requirements
- Python 3.8+
- requests
- tqdm
中文说明
下载 VIIRS 夜间灯光合成数据，支持 EOG/NOAA VNL 和 NASA LAADS 数据源。
产品类型
annual：年度云量过滤合成产品（VNL v2）monthly：月度合成产品
年份范围
2012 - 2024
使用方法
# 搜索可用数据
python viirs-nightlights-download.py search --year 2023 --product annual
# 下载全球年度合成
python viirs-nightlights-download.py download --year 2023 --product annual -o output/
# 下载月度合成
python viirs-nightlights-download.py download --year 2023 --product monthly --month 6 -o output/
# 按边界框下载区域子集
python viirs-nightlights-download.py download --year 2023 --product annual --bbox 100,20,120,40 -o output/
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