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Cao, Peiyu; Lu, Chaoqun; Yu, Zhen (2017): Agricultural nitrogen fertilizer uses in the continental U.S. during 1850-2015: a set of gridded time-series data [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.883585, Supplement to: Cao, P et al. (2018): Historical nitrogen fertilizer use in agricultural ecosystems of the contiguous United States during 1850–2015: application rate, timing, and fertilizer types. Earth System Science Data, 10(2), 969-984, https://doi.org/10.5194/essd-10-969-2018

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Abstract:
To facilitate earth system modeling and inventory-based studies, we developed a spatially explicit time-series data set of nitrogen (N) fertilizer use in agricultural land of the continental U.S. during 1850 to 2015. The spatial resolution of this data set is 5km × 5km, and the time step is annually. Through gap-filling, we reconstructed the state-level crop-specific N fertilizer use history by harmonizing national and state-level N fertilizer use data from multiple data sources. We then spatialized and resampled N fertilizer use data to 5km × 5km gridded maps based on historical land cover data of the continental U.S. developed by Yu and Lu (2017). This data indicated that N fertilizer use rates of the U.S. increased by 34 times from 1940 to 2015. Geospatial analysis revealed that the hotspots of N fertilizer use have shifted from the southeastern and eastern US to the Midwest and the Great Plains during the past century.
Other version:
Nitrogen fertilizer uses 1850-2015 (Download all)
Coverage:
Median Latitude: 37.000000 * Median Longitude: -103.500000 * South-bound Latitude: 25.000000 * West-bound Longitude: -126.000000 * North-bound Latitude: 49.000000 * East-bound Longitude: -81.000000
Date/Time Start: 1850-01-01T00:00:00 * Date/Time End: 2015-12-31T00:00:00
Event(s):
US_America * Latitude Start: 49.000000 * Longitude Start: -126.000000 * Latitude End: 25.000000 * Longitude End: -81.000000 * Date/Time Start: 1850-01-01T00:00:00 * Date/Time End: 2015-12-31T00:00:00
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 File contentContentCao, Peiyu
2 File nameFile nameCao, Peiyu
3 File formatFile formatCao, Peiyu
4 File sizeFile sizekByteCao, Peiyu
5 Uniform resource locator/link to fileURL fileCao, Peiyu
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
835 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Content		2 
File name		3 
File format		4 
File size [kByte]		5 
URL file
Data CommentsData_Comments.docxDOCX11.800Data_Comments.docx
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1952N_fer_use_rate_1952.tifTIF2562.148rate5km_1952.tif
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1965N_fer_use_rate_1965.tifTIF2562.148rate5km_1965.tif
1966N_fer_use_rate_1966.tifTIF2562.148rate5km_1966.tif
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1982N_fer_use_rate_1982.tifTIF2562.148rate5km_1982.tif
1983N_fer_use_rate_1983.tifTIF2562.148rate5km_1983.tif
1984N_fer_use_rate_1984.tifTIF2562.148rate5km_1984.tif
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