Development and analysis of the Soil Water Infiltration Global database

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 th...

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Published in:	Earth system science data Vol. 10; no. 3; pp. 1237 - 1263
Main Authors:	Rahmati, Mehdi, Weihermuller, Lutz, Vanderborght, Jan, Pachepsky, Yakov A, Sadeghi, Seyed Hamidreza, Moosavi, Niloofar, Kheirfam, Hossein, Montzka, Carsten, Toth, Brigitta, Hazbavi, Zeinab, Albalasmeh, Ammar A, Alghzawi, Ma'in Z, Angulo-Jaramillo, Rafael, Armindo, Robson Andre, Bamutaze, Yazidhi, Batlle-Aguilar, Jordi, Becker, Fabian, Bloschl, Gunter, Bohne, Klaus, Braud, Isabelle, Castellano, Clara, Cerda, Artemi, Chalhoub, Maha, Cichota, Rogerio, Clothier, Brent, Coquet, Yves, Cornelis, Wim, Corradini, Corrado, Coutinho, Artur Paiva, Emami, Hojat, Eskandari, Iraj, Farajnia, Asghar, Flammini, Alessia, Fodor, Nandor, Gharaibeh, Mamoun, Ghavimipanah, Mohamad Hossein, Ghezzehei, Teamrat A, Giertz, Simone, Hatzigiannakis, Evangelos G, Horn, Rainer, Jacques, Diederik, Keesstra, Saskia Deborah, Kelishadi, Hamid, Kiani-Harchegani, Mahboobeh, Kouselou, Mehdi, Kumar Jha, Madan, Lassabatere, Laurent, Li, Xiaoyan, Liebig, Mark A, Lichner, Lubomir, Machiwal, Deepesh, Mallants, Dirk, Mallmann, Micael Stolben, de Oliveira Marques, Jean Dalmo, Marshall, Miles R, Mertens, Jan, Meunier, Felicien, Mohammadi, Mohammad Hossein, Mohanty, Binayak P, Pulido-Moncada, Mansonia, Montenegro, Suzana, Moret-Fernandez, David, Mosaddeghi, Mohammad Reza, Mousavi, Seyed Bahman, Nabiollahi, Kamal, Ottoni, Marta Vasconcelos, Ottoni Filho, Theophilo Benedicto, Pahlavan-Rad, Mohammad Reza, Panagopoulos, Andreas, Peth, Stephan, Peyneau, Pierre-Emmanuel, Pulido, Manuel, Reinert, Dalvan Jose, Reinsch, Sabine, Rezaei, Meisam, Roberts, Francis Parry, Robinson, David, Rodrigo-Comino, Jesus, Saito, Tadaomi, Suganuma, Hideki, Saltalippi, Carla, Schutt, Brigitta, Seeger, Manuel, Sharifi Moghaddam, Ehsan, Shukla, Manoj, Shutaro, Shiraki, Sorando, Ricardo, Stanley, Ajayi Asishana, Su, Zhongbo, Taghizadeh-Mehrjardi, Ruhollah, Taguas, Encarnacion, Teixeira, Wenceslau Geraldes, Vafakhah, Mehdi, Vogel, Tomas, Vogeler, Iris, Werner, Steffen, Winarski, Thierry, Young, Michael H, Zacharias, Steffen, Zhao, Hong
Format:	Journal Article
Language:	English
Published:	Katlenburg-Lindau Copernicus GmbH 10-07-2018 Copernicus Publications
Subjects:	Agricultural land Analysis Clay Clay soils Data Digitization Environmental Sciences Evaluation Hydraulic properties Infiltration Infiltration (Hydrology) Infiltration models Land surface models Land use Life Sciences Measurement Measurement methods Moisture content Pangea Parameterization PE&RC Public domain Quality assessment Quality control Scientists Silt Soil Soil analysis Soil characteristics Soil infiltration Soil moisture Soil properties Soil water Water infiltration
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Summary:	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 database by uploading new data to it.
ISSN:	1866-3516 1866-3508 1866-3516
DOI:	10.5194/essd-10-1237-2018