Application of open-path Fourier transform infrared spectroscopy (OP-FTIR) to measure greenhouse gas concentrations from agricultural fields

Lin, Cheng-Hsien; Grant, Richard H.; Heber, Albert J.; Johnston, Cliff T.

doi:https://doi.org/10.5194/amt-12-3403-2019

Articles | Volume 12, issue 6

https://doi.org/10.5194/amt-12-3403-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-12-3403-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 6

Research article

|

27 Jun 2019

Research article |

| 27 Jun 2019

Application of open-path Fourier transform infrared spectroscopy (OP-FTIR) to measure greenhouse gas concentrations from agricultural fields

Cheng-Hsien Lin, Richard H. Grant, Albert J. Heber, and Cliff T. Johnston

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Final revised paper (published on 27 Jun 2019)
Supplement to the final revised paper
Preprint (discussion started on 07 Dec 2018)

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

AC1: 'Modified CO2 concentrations in Figure-7', CHENG-HSIEN LIN, 13 Dec 2018
RC1: 'Several issues should be addressed', Anonymous Referee #2, 27 Dec 2018
- AC2: 'Responses for the anonymous referee #2: Several issues should be addressed', CHENG-HSIEN LIN, 15 Jan 2019
RC2: 'Comment to AMT-2018-373', Anonymous Referee #3, 25 Mar 2019
- AC3: 'Responses for the anonymous referee #3', CHENG-HSIEN LIN, 22 Apr 2019

Peer-review completion

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

AR by CHENG-HSIEN LIN on behalf of the Authors (25 May 2019) Author's response Manuscript

ED: Publish as is (29 May 2019) by Frank Hase

AR by CHENG-HSIEN LIN on behalf of the Authors (08 Jun 2019) Manuscript

Short summary

The open-path FTIR (OP-FTIR) is often used to measure the atmospheric gas composition and concentrations. The OP-FTIR, however, is sensitive to the changed ambient factors, which likely led to quantitative biases. This study developed methods to minimize the effect of the ambient temperature and humidity on N2O/CO2 quantification. These methods can help the users who implement the OP-FTIR to estimate gas fluxes in the agroecosystem achieve more precise and accurate estimations.