{"id":"https://openalex.org/A5111543896","orcid":"https://orcid.org/0000-0001-5010-8018","observed_orcids":["https://orcid.org/0000-0001-5010-8018"],"display_name":"Christopher H. Hay","raw_author_names":["C. H. Hay","Christopher H Hay","Christopher H. Hay","Christopher Hay","Hay, Christopher"],"full_name":"Christopher H. Hay","works_count":49,"cited_by_count":780,"summary_stats":{"2yr_mean_citedness":1.6666666666666667,"h_index":15,"i10_index":17},"ids":{"openalex":"https://openalex.org/A5111543896","orcid":"https://orcid.org/0000-0001-5010-8018","observed_orcids":["https://orcid.org/0000-0001-5010-8018"]},"affiliations":[{"institution":{"id":"https://openalex.org/I114395901","ror":"https://ror.org/043mer456","display_name":"University of Nebraska\u2013Lincoln","country_code":"US","type":"education","lineage":["https://openalex.org/I114395901"]},"years":[2009,2008,2007]},{"institution":{"id":"https://openalex.org/I130238516","ror":"https://ror.org/017zqws13","display_name":"University of Minnesota","country_code":"US","type":"education","lineage":["https://openalex.org/I130238516"]},"years":[2020,2018]},{"institution":{"id":"https://openalex.org/I1312222531","ror":"https://ror.org/02d2m2044","display_name":"Agricultural Research Service","country_code":"US","type":"government","lineage":["https://openalex.org/I1312222531","https://openalex.org/I1336096307"]},"years":[2020]},{"institution":{"id":"https://openalex.org/I1336096307","ror":"https://ror.org/01na82s61","display_name":"United States Department of Agriculture","country_code":"US","type":"government","lineage":["https://openalex.org/I1336096307"]},"years":[2020]},{"institution":{"id":"https://openalex.org/I157725225","ror":"https://ror.org/047426m28","display_name":"University of Illinois Urbana-Champaign","country_code":"US","type":"education","lineage":["https://openalex.org/I157725225"]},"years":[2020]},{"institution":{"id":"https://openalex.org/I173911158","ror":"https://ror.org/04rswrd78","display_name":"Iowa State University","country_code":"US","type":"education","lineage":["https://openalex.org/I173911158"]},"years":[2026,2020,2017]},{"institution":{"id":"https://openalex.org/I177156846","ror":"https://ror.org/015jmes13","display_name":"South Dakota State University","country_code":"US","type":"education","lineage":["https://openalex.org/I177156846"]},"years":[2016,2015,2014,2012]},{"institution":{"id":"https://openalex.org/I2801919071","ror":"https://ror.org/05e94g991","display_name":"University of Illinois System","country_code":"US","type":"education","lineage":["https://openalex.org/I2801919071"]},"years":[2020]},{"institution":{"id":"https://openalex.org/I4210107373","ror":"https://ror.org/01wvxvm13","display_name":"University of Iowa Foundation","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I4210107373"]},"years":[2026]},{"institution":{"id":"https://openalex.org/I4210165468","ror":"https://ror.org/05yk4yy03","display_name":"Iowa Soybean Association","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I4210165468"]},"years":[2024,2022,2021,2020,2019,2018,2017,2016]},{"institution":{"id":"https://openalex.org/I4405270946","ror":"https://ror.org/01kc9x630","display_name":"South Dakota Water Resources Institute","country_code":"US","type":"facility","lineage":["https://openalex.org/I4405270946"]},"years":[2014]},{"institution":{"id":"https://openalex.org/I57328836","ror":"https://ror.org/05h1bnb22","display_name":"North Dakota State University","country_code":"US","type":"education","lineage":["https://openalex.org/I57328836"]},"years":[2014]}],"last_known_institutions":[{"id":"https://openalex.org/I173911158","ror":"https://ror.org/04rswrd78","display_name":"Iowa State University","country_code":"US","type":"education","lineage":["https://openalex.org/I173911158"]},{"id":"https://openalex.org/I4210107373","ror":"https://ror.org/01wvxvm13","display_name":"University of Iowa Foundation","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I4210107373"]}],"topics":[{"id":"https://openalex.org/T11311","display_name":"Soil and Water Nutrient Dynamics","count":21,"subfield":{"id":"https://openalex.org/subfields/2304","display_name":"Environmental Chemistry"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11404","display_name":"Irrigation Practices and Water Management","count":18,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11186","display_name":"Hydrology and Drought Analysis","count":15,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11119","display_name":"Urban Stormwater Management Solutions","count":13,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","count":10,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11311","display_name":"Soil and Water Nutrient Dynamics","value":0.0001057,"subfield":{"id":"https://openalex.org/subfields/2304","display_name":"Environmental Chemistry"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11624","display_name":"Constructed Wetlands for Wastewater Treatment","value":9.58e-05,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Waste Management and Disposal"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11186","display_name":"Hydrology and Drought Analysis","value":7.93e-05,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11404","display_name":"Irrigation Practices and Water Management","value":6.02e-05,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11119","display_name":"Urban Stormwater Management Solutions","value":5.89e-05,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.7958999872207642},{"id":"76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","score":0.7513900995254517},{"id":"18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","score":0.5552793145179749},{"id":"86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","score":0.32382848858833313},{"id":"187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","score":0.06214970350265503}],"counts_by_year":[{"year":2006,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2009,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":3,"oa_works_count":1,"cited_by_count":4},{"year":2013,"works_count":3,"oa_works_count":0,"cited_by_count":7},{"year":2014,"works_count":5,"oa_works_count":1,"cited_by_count":8},{"year":2015,"works_count":3,"oa_works_count":0,"cited_by_count":3},{"year":2016,"works_count":5,"oa_works_count":1,"cited_by_count":15},{"year":2017,"works_count":5,"oa_works_count":2,"cited_by_count":28},{"year":2018,"works_count":2,"oa_works_count":2,"cited_by_count":46},{"year":2019,"works_count":1,"oa_works_count":1,"cited_by_count":62},{"year":2020,"works_count":3,"oa_works_count":3,"cited_by_count":74},{"year":2021,"works_count":2,"oa_works_count":2,"cited_by_count":97},{"year":2022,"works_count":2,"oa_works_count":2,"cited_by_count":91},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":101},{"year":2024,"works_count":2,"oa_works_count":2,"cited_by_count":91},{"year":2025,"works_count":1,"oa_works_count":1,"cited_by_count":77},{"year":2026,"works_count":3,"oa_works_count":3,"cited_by_count":61}],"display_name_alternatives":["C. H. Hay","Christopher H Hay","Christopher H. Hay","Christopher Hay","Hay, Christopher"],"block_key":"c hay","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111543896","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5111543896","updated_date":"2026-11-10T14:30:39","created_date":"2016-06-24T00:00:00"}