Index

Name: Index
Creator: Major TOM

Global metadata catalog for the MajorTOM 10 km grid. Over 5 million tiles enriched with terrain, climate, soil, socioeconomic, and administrative attributes. GeoParquet format.

Contents

root

Details

Visibility: Public
Owner: Major TOM
Created: 10 Apr 2026
Last Updated: 11 Apr 2026

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28 days

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1,860

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13.2 GB

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28-day downloads

23 Aug 2026

19 Sep 2026

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README

Major TOM Index

Global metadata catalog for the Major TOM 10 km grid. One row per tile, 5,055,204 tiles between 80°S and 84°N.

https://data.source.coop/major-tom/index/global.parquet

GeoParquet 1.1.0 · 174 MB · ZSTD · sorted by majortom:code_1000km → majortom:code_100km → id

Schema

Column	Type	Description
`id`	`string`	Major TOM 10 km grid cell identifier, format MT{dist}km_{row:04d}{U\|D}_{col:04d}{R\|L}
`majortom:code_100km`	`string`	Parent 100 km grid cell identifier
`majortom:code_1000km`	`string`	Parent 1000 km grid cell identifier
`majortom:crs`	`string`	Native UTM CRS of the assigned MGRS tile
`majortom:mgrs_tile`	`string`	Assigned Sentinel-2 MGRS tile identifier
`majortom:geotransform`	`list<int32>`	MGRS-snapped affine geotransform [x0, 10, 0, y0, 0, -10]
`majortom:geotransform_raw`	`list<double>`	Nominal affine geotransform from the centroid, before the MGRS snap
`geoenrich:elevation`

Every geoenrich: value is sampled at the tile centroid at 5120 m scale, not averaged over the tile. null means the source has no data at that point, not zero. The exception is geoenrich:population, which is 0 over water and Antarctica because nobody lives there.

Quick start

Other files

Per-sensor subsets and the ELLIOT sample live in extra/.

Citation

License

CC-BY-4.0

Acknowledgements

The Major TOM Index has been made possible thanks to Asterisk Labs, the ELLIOT project (European Commission, Horizon Europe, Grant 101214398), and the Image and Signal Processing Group (ISP) at Universitat de València.

1import duckdb
2
3duckdb.sql("""
4INSTALL httpfs; LOAD httpfs;
5SELECT "geoenrich:admin_countries" AS country, COUNT(*) AS tiles
6FROM 'https://data.source.coop/major-tom/index/global.parquet'
7GROUP BY 1 ORDER BY 2 DESC LIMIT 10
8""").show()

1import duckdb
2
3duckdb.sql("""
4INSTALL httpfs; LOAD httpfs;
5SELECT "geoenrich:admin_countries" AS country, COUNT(*) AS tiles
6FROM 'https://data.source.coop/major-tom/index/global.parquet'
7GROUP BY 1 ORDER BY 2 DESC LIMIT 10
8""").show()

1@inproceedings{Francis2024MajorTOM,
2    author    = {Francis, Alistair and Czerkawski, Mikolaj},
3    title     = {Major TOM: Expandable Datasets for Earth Observation},
4    booktitle = {IGARSS 2024 - IEEE International Geoscience and Remote Sensing Symposium},
5    year      = {2024}, pages = {2935--2940},
6    doi       = {10.1109/IGARSS53475.2024.10640760}
7}

1@inproceedings{Francis2024MajorTOM,
2    author    = {Francis, Alistair and Czerkawski, Mikolaj},
3    title     = {Major TOM: Expandable Datasets for Earth Observation},
4    booktitle = {IGARSS 2024 - IEEE International Geoscience and Remote Sensing Symposium},
5    year      = {2024}, pages = {2935--2940},
6    doi       = {10.1109/IGARSS53475.2024.10640760}
7}