Files in this item
Files | Description | Format |
---|---|---|
application/pdf ![]() | Peer-reviewed manuscript published in Journal of Geophysical Research: Atmospheres. Submitted version. (Corrected) | |
application/vnd.ms-excel ![]() | Corrected file | Microsoft Excel |
application/vnd.openxmlformats-officedocument.wordprocessingml.document ![]() | Readme file for NH3_Emissions_both domains.xls. (Corrected) | Microsoft Word 2007 |
application/vnd.openxmlformats-officedocument.wordprocessingml.document ![]() | Corrected file | Microsoft Word 2007 |
application/vnd.ms-excel ![]() | Microsoft Excel |
Description
Title: | Modeling Ammonia Emissions Post Chemical Fertilizer Application |
Author(s): | Balasubramanian, Srinidhi; Koloutsou-Vakakis, Sotiria; McFarland, Donald Michael; Rood, Mark J. |
Subject(s): | ammonia
emission inventory fertilizer DNDC spatial surrogate |
Geographic Coverage: | Midwest United States Illinois |
Abstract: | We present alternative methods for estimating spatial surrogates and temporal factors for ammonia (NH3) emissions from chemical fertilizer usage (CFU), in the USA, at spatial and temporal scales used to simulate regional air quality and deposition of reactive nitrogen to ecosystems. The newly developed Improved Spatial Surrogate (ISS) method incorporates year-specific fertilizer sales data, high resolution and year-specific crop maps, and local crop nitrogen demands to allocate NH3 emissions at 4km× 4 km grid cells. Results are compared with the commonly used gridded emission estimates by the Sparse Matrix Operator Kernel Emissions (SMOKE) preprocessor. NH3 emissions over Central Illinois in the USA, estimated at the 4 km× 4 km grid level in SMOKE and ISS methods, exhibit differences between 10% and 120%, with 58% of the grid cells exhibiting more than ±10% difference. Application of the ISS method for a larger domain over the Midwest USA, at 4km×4km, reflected similar differences. We also employed the Denitrification Decomposition (DNDC) model to develop daily temporal factors of NH3 emissions from CFU using multi-site and multi-year analyses. Ratio of temporal factors estimated by SMOKE and DNDC methods is 0.54 ± 2.35, with DNDC identifying daily emission peaks 2.5–8 times greater than SMOKE. Identified emission peaks will be useful for future air quality modeling efforts to understand particulate matter episodes, as well as trends in regional particulate matter formation and nitrogen deposition for Midwest USA, using the proposed NH3 emissions inventory. |
Issue Date: | 2015-06-27 |
Publisher: | AGU Publications |
Citation Info: | Balasubramanian, S., S. Koloutsou-Vakakis, D. M. McFarland, and M. J. Rood (2015), Reconsidering emissions of ammonia from chemical fertilizer usage in Midwest USA, J. Geophys. Res. Atmos., 120, doi:10.1002/2015JD023219. |
Genre: | Article Data |
Type: | Text dataset / spreadsheet |
Language: | English |
URI: | http://hdl.handle.net/2142/91047 |
DOI: | https://doi.org/10.1002/2015JD023219 |
Sponsor: | NSF Award No. AGS 12-36814 with accompanying research experience for undergraduates (REU) University of Illinois Campus Research Board |
Date Available in IDEALS: | 2016-08-18 2017-01-01 2019-03-01 |