Source apportionment of methane and nitrous oxide in California's San Joaquin Valley at CalNex 2010 via positive matrix factorization

Guha, A.; Gentner, D. R.; Weber, R. J.; Provencal, R.; Goldstein, A. H.

doi:https://doi.org/10.5194/acp-15-12043-2015

Articles | Volume 15, issue 20

Atmos. Chem. Phys., 15, 12043–12063, 2015

https://doi.org/10.5194/acp-15-12043-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Atmos. Chem. Phys., 15, 12043–12063, 2015

https://doi.org/10.5194/acp-15-12043-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 20

Research article 29 Oct 2015

Research article | 29 Oct 2015

Source apportionment of methane and nitrous oxide in California's San Joaquin Valley at CalNex 2010 via positive matrix factorization

A. Guha et al.

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Final revised paper (published on 29 Oct 2015)
Supplement to the final revised paper
Preprint (discussion started on 04 Mar 2015)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC C874: 'Review of "Source apportionment of methane and nitrous oxide in California’s San Joaquin Valley at CalNex 2010 via positive matrix factorization", cpd-15-6077-2015', Anonymous Referee #1, 18 Mar 2015
- AC C6453: 'Response to comments from Referee 1', Abhinav Guha, 31 Aug 2015
RC C4101: 'review of acp-2014-856', Anonymous Referee #2, 27 Jun 2015
- AC C6460: 'Response to comments from Referee 2', Abhinav Guha, 31 Aug 2015

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Abhinav Guha on behalf of the Authors (23 Sep 2015) Author's response Manuscript

ED: Publish as is (09 Oct 2015) by Robert McLaren

Short summary

We perform a positive matrix factorization (PMF)-based source apportionment by combining GHG measurements with coincident VOC measurements in the San Joaquin Valley of California. Using VOCs as source tracers, we identify dairies and livestock as major sources of CH4 and N2O in the region. Agriculture is a significant source of N2O enhancements too, while vehicle emissions are found to be a negligible source of N2O. The findings are relevant to the state’s GHG inventory verification process.