عنوان مجله
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Earth System Science Data
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چکیده
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In this paper, we present and analyze a novel global database of soil infiltration measurements, the
Soil Water Infiltration Global (SWIG) database. In total, 5023 infiltration curves were collected across all continents
in the SWIG database. These data were either provided and quality checked by the scientists who performed
the experiments or they were digitized from published articles. Data from 54 different countries were
included in the database with major contributions from Iran, China, and the USA. In addition to its extensive
geographical coverage, the collected infiltration curves cover research from 1976 to late 2017. Basic information
on measurement location and method, soil properties, and land use was gathered along with the infiltration data,
making the database valuable for the development of pedotransfer functions (PTFs) for estimating soil hydraulic
properties, for the evaluation of infiltration measurement methods, and for developing and validating infiltration
models. Soil textural information (clay, silt, and sand content) is available for 3842 out of 5023 infiltration measurements
( 76%) covering nearly all soil USDA textural classes except for the sandy clay and silt classes.
Information on land use is available for 76% of the experimental sites with agricultural land use as the dominant
type (40%). We are convinced that the SWIG database will allow for a better parameterization of the
infiltration process in land surface models and for testing infiltration models. All collected data and related soil
characteristics are provided online in *.xlsx and *.csv formats for reference, and we add a disclaimer that the
database is for public domain use only and can be copied freely by referencing it. Supplementary data are available
at https://doi.org/10.1594/PANGAEA.885492 (Rahmati et al., 2018). Data quality assessment is strongly
advised prior to any use of this database. Finally, we would like to encourage scientists to extend and update the
SWIG d
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