Konar Research Group

Civil and Environmental Engineering Department
University of Illinois at Urbana-Champaign
Crop-specific exposure to extreme temperature and moisture for the globe for the last half century

Estimates of crop-specific temperature and moisture shocks during the growing season for the globe from 1961 to 2014. Estimates are provided at the annual time step for a 0.25 degree spatial grid and also aggregated by nations. Data is provided for 17 crops (barley, cassava, groundnuts, maize, millet, oats, potato, rapeseed, rice, rye, sorghum, soybeans, sugarbeet, sunflowers, sweet potato, wheat, and yams) and 4 extreme weather categories (too wet, too dry, too hot, too cold).

Reference: Jackson, N.D., M. Konar, P. Debaere, and J. Sheffield (2021), Crop-specific exposure to extreme temperature and moisture for the globe for the last half century, Environmental Research Letters, Vol 16, Issue 6, pp. 064006, doi: 10.1088/1748-9326/abf8e0.

Groundwater depletion in agricultural supply chains of the United States

A dataset of the groundwater depletion embedded in the domestic transfers and international exports of the United States. This database provides the volume [km3] of nonrenewable groundwater incorporated in agricultural commodities for the years 2002 and 2012. The groundwater depletion of three Standard Classification of Transported Goods (SCTG) commodity classes is provided: (SCTG 02) cereal grains, (SCTG 03) all other agricultural products excluding animal feed and forage products, and (SCTG 04) animal feed and other products of animal origin.

Reference: Gumidyala, S., P.J. Ruess, M. Konar, L. Marston, C. Dalin, and Y. Wada (2020), Groundwater depletion embedded in transfers and exports of the United States, Water Resources Research, Vol 56, Issue 2, pp. e2019WR024986, doi: 10.1029/2019WR024986.

Global maps of specific crops in time

This database provides the likely locations of specific crops for the last half century. Gridded estimates are provided at the annual temporal resolution from 1961 to 2014. Crop-specific area harvested is provided for a global 0.5-degree grid for 17 major crops: barley, cassava, groundnut, maize, millet, oats, potato, rapeseed, rice, rye, sorghum, soybean, sugarbeet, sunflower, sweet potato, wheat, and yams. The mean and standard deviation of grid cell fractions are available for each of the 17 crops.

Reference: Jackson, N., M. Konar, P. Debaere, and L. Estes (2019) Probabilistic global maps of crop-specific areas from 1961 to 2014, Environmental Research Letters, doi: 10.1088/1748- 9326/ab3b93.

Food flows between counties in the United States

A comprehensive database of food flows between all county pairs within the United States. Estimates are provided for all 9,869,022 potential links within the nation by Standard Classification of Transported Goods (SCTG) commodity classes: (SCTG 01) animals and fish (live), (SCTG 02) cereal grains (includes seeds), (SCTG 03) agricultural products (excludes animal feed, cereal grains, and forage products), (SCTG 04) animal feed, eggs, honey, and other products of animal origin, (SCTG 05) meat, poultry, fish, seafood, and their preparations, (SCTG 06) milled grain products and preparations, and bakery products, and (SCTG 07) other prepared foodstuffs, fats and oils. A weighted [kg] and directed matrix of food flows from origin to destination county (by fips code) is provided for the year 2012.

Reference: Lin, X., P.J. Ruess, L. Marston, and M. Konar (2019) Food flows between counties in the United States, Environmental Research Letters, Vol 14, pp. 084011, doi: 10.1088/1748-9326/ab29ae.

Water footprint of production in the United States

A rich dataset for the United States showing the water footprint of production per economic sector at state level and at county level (for some sectors), and distinguishing between surface water footprint and groundwater footprint. The different sectors included are crop production, livestock, aquaculture, mining, thermoelectric power production, and commercial, industrial, and institutional production.

Reference: Marston, L., Y. Ao, M. Konar, M. Mekonnen, and A.Y. Hoekstra (2018), High-resolution water footprints of production of the United States, Water Resources Research, Vol 54, Issue 3, pp. 2288-2316, doi: 10.1002/2017WR021923.