Harmonized Soil Carbon Database

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Harmonized Soil Carbon Database
Main content

"This state-of-the-art database was established by IIASA and FAO in partnership with:

About HWSD

HWSD has two main goals:

  • To increase the quantity and quality of data available by capturing data at a grid cell size of 30 arc seconds of longitude and latitude (approximately, l km);
  • To harmonize and expand soil attribute information (texture, composition) with recently collected soil data."


Please cite data sources, following the data providers' instructions
Suggested Data Citation
  1. FAO/IIASA/ISRIC/ISSCAS/JRC, 2012. Harmonized World Soil Database (version 1.2). FAO, Rome, Italy and IIASA, Laxenburg, Austria.

Dataset DOIs
Hosted Climate Index Files
Usage Restrictions

Cite this page

Acknowledgement of any material taken from or knowledge gained from this page is appreciated:

National Center for Atmospheric Research Staff (Eds). Last modified "The Climate Data Guide: Harmonized Soil Carbon Database.” Retrieved from https://climatedataguide.ucar.edu/climate-data/harmonized-soil-carbon-database on 2024-07-21.

Citation of datasets is separate and should be done according to the data providers' instructions. If known to us, data citation instructions are given in the Data Access section, above.

Acknowledgement of the Climate Data Guide project is also appreciated:

Schneider, D. P., C. Deser, J. Fasullo, and K. E. Trenberth, 2013: Climate Data Guide Spurs Discovery and Understanding. Eos Trans. AGU, 94, 121–122, https://doi.org/10.1002/2013eo130001

Other Information

Earth system components and main variables
Dataset collections

Years of record
Data time period extended
Input Data

Mixture of existing products

Vertical Levels:
Missing Data Flag
Ocean or Land
Land Only
Spatial Resolution

21600x43200 [0.00833333]


0.9 degree x 1.25 degree)

Model Resolution (reanalysis)
Data Assimilation Method
Model Vintage (reanalysis)

Key Publications
Not available...