Ammonia and methane dairy emissions in the San Joaquin Valley of California from individual feedlot to regional scale
Abstract
Abstract Agricultural ammonia (NH 3 ) emissions are highly uncertain, with high spatiotemporal variability and a lack of widespread in situ measurements. Regional NH 3 emission estimates using mass balance or emission ratio approaches are uncertain due to variable NH 3 sources and sinks as well as unknown plume correlations with other dairy source tracers. We characterize the spatial distributions of NH 3 and methane (CH 4 ) dairy plumes using in situ surface and airborne measurements in the Tulare dairy feedlot region of the San Joaquin Valley, California, during the NASA Deriving Information on Surface conditions from Column and Vertically Resolved Observations Relevant to Air Quality 2013 field campaign. Surface NH 3 and CH 4 mixing ratios exhibit large variability with maxima localized downwind of individual dairy feedlots. The geometric mean NH 3 :CH 4 enhancement ratio derived from surface measurements is 0.15 ± 0.03 ppmv ppmv −1 . Individual dairy feedlots with spatially distinct NH 3 and CH 4 source pathways led to statistically significant correlations between NH 3 and CH 4 in 68% of the 69 downwind plumes sampled. At longer sampling distances, the NH 3 :CH 4 enhancement ratio decreases 20–30%, suggesting the potential for NH 3 depositionmore »
- Authors:
-
- Princeton Univ., Princeton, NJ (United States); Brown Univ., Providence, RI (United States)
- Princeton Univ., Princeton, NJ (United States); Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
- Princeton Univ., Princeton, NJ (United States)
- Univ. of Colorado, Boulder, CO (United States); Aerodyne Research, Inc., Billerica, MA (United States)
- Sandia National Lab. (SNL-CA), Livermore, CA (United States); Ramboll Environ US Corp., Novato, CA (United States)
- NASA Langley Research Center, Hampton, VA (United States)
- National Institute of Aerospace, Hampton, VA (United States)
- NASA Langley Research Center, Hampton, VA (United States); Science Systems and Applications, Inc., Hampton, VA (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1235313
- Alternate Identifier(s):
- OSTI ID: 1402270
- Report Number(s):
- SAND-2015-5504J
Journal ID: ISSN 2169-897X; 594840
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Geophysical Research: Atmospheres
- Additional Journal Information:
- Journal Volume: 120; Journal Issue: 18; Journal ID: ISSN 2169-897X
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES
Citation Formats
Miller, David J., Sun, Kang, Tao, Lei, Nowak, John B., Liu, Zhen, Diskin, Glenn, Sasche, Glen, Beyersdorf, Andreas, Ferrare, Richard, Scarino, Amy Jo, Zondlo, Mark A., and Pan, Da. Ammonia and methane dairy emissions in the San Joaquin Valley of California from individual feedlot to regional scale. United States: N. p., 2015.
Web. doi:10.1002/2015JD023241.
Miller, David J., Sun, Kang, Tao, Lei, Nowak, John B., Liu, Zhen, Diskin, Glenn, Sasche, Glen, Beyersdorf, Andreas, Ferrare, Richard, Scarino, Amy Jo, Zondlo, Mark A., & Pan, Da. Ammonia and methane dairy emissions in the San Joaquin Valley of California from individual feedlot to regional scale. United States. https://doi.org/10.1002/2015JD023241
Miller, David J., Sun, Kang, Tao, Lei, Nowak, John B., Liu, Zhen, Diskin, Glenn, Sasche, Glen, Beyersdorf, Andreas, Ferrare, Richard, Scarino, Amy Jo, Zondlo, Mark A., and Pan, Da. Sun .
"Ammonia and methane dairy emissions in the San Joaquin Valley of California from individual feedlot to regional scale". United States. https://doi.org/10.1002/2015JD023241. https://www.osti.gov/servlets/purl/1235313.
@article{osti_1235313,
title = {Ammonia and methane dairy emissions in the San Joaquin Valley of California from individual feedlot to regional scale},
author = {Miller, David J. and Sun, Kang and Tao, Lei and Nowak, John B. and Liu, Zhen and Diskin, Glenn and Sasche, Glen and Beyersdorf, Andreas and Ferrare, Richard and Scarino, Amy Jo and Zondlo, Mark A. and Pan, Da},
abstractNote = {Abstract Agricultural ammonia (NH 3 ) emissions are highly uncertain, with high spatiotemporal variability and a lack of widespread in situ measurements. Regional NH 3 emission estimates using mass balance or emission ratio approaches are uncertain due to variable NH 3 sources and sinks as well as unknown plume correlations with other dairy source tracers. We characterize the spatial distributions of NH 3 and methane (CH 4 ) dairy plumes using in situ surface and airborne measurements in the Tulare dairy feedlot region of the San Joaquin Valley, California, during the NASA Deriving Information on Surface conditions from Column and Vertically Resolved Observations Relevant to Air Quality 2013 field campaign. Surface NH 3 and CH 4 mixing ratios exhibit large variability with maxima localized downwind of individual dairy feedlots. The geometric mean NH 3 :CH 4 enhancement ratio derived from surface measurements is 0.15 ± 0.03 ppmv ppmv −1 . Individual dairy feedlots with spatially distinct NH 3 and CH 4 source pathways led to statistically significant correlations between NH 3 and CH 4 in 68% of the 69 downwind plumes sampled. At longer sampling distances, the NH 3 :CH 4 enhancement ratio decreases 20–30%, suggesting the potential for NH 3 deposition as a loss term for plumes within a few kilometers downwind of feedlots. Aircraft boundary layer transect measurements directly above surface mobile measurements in the dairy region show comparable gradients and geometric mean enhancement ratios within measurement uncertainties, even when including NH 3 partitioning to submicron particles. Individual NH 3 and CH 4 plumes sampled at close proximity where losses are minimal are not necessarily correlated due to lack of mixing and distinct source pathways. Our analyses have important implications for constraining NH 3 sink and plume variability influences on regional NH 3 emission estimates and for improving NH 3 emission inventory spatial allocations.},
doi = {10.1002/2015JD023241},
journal = {Journal of Geophysical Research: Atmospheres},
number = 18,
volume = 120,
place = {United States},
year = {Sun Sep 27 00:00:00 EDT 2015},
month = {Sun Sep 27 00:00:00 EDT 2015}
}
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