Uncertainty of eddy covariance flux measurements over an urban area based on two towers

Järvi, Leena; Rannik, Üllar; Kokkonen, Tom V.; Kurppa, Mona; Karppinen, Ari; Kouznetsov, Rostislav D.; Rantala, Pekka; Vesala, Timo; Wood, Curtis R.

doi:https://doi.org/10.5194/amt-11-5421-2018

Articles | Volume 11, issue 10

https://doi.org/10.5194/amt-11-5421-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-11-5421-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 10

Research article

|

02 Oct 2018

Research article |

| 02 Oct 2018

Uncertainty of eddy covariance flux measurements over an urban area based on two towers

Leena Järvi, Üllar Rannik, Tom V. Kokkonen, Mona Kurppa, Ari Karppinen, Rostislav D. Kouznetsov, Pekka Rantala, Timo Vesala, and Curtis R. Wood

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Final revised paper (published on 02 Oct 2018)
Preprint (discussion started on 22 May 2018)

Interactive discussion

Status: closed

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

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RC1: 'Review of amt-2018-89', Anonymous Referee #1, 07 Jun 2018
- AC1: 'Response for RC1', Leena Järvi, 14 Aug 2018
RC2: 'Interactive comment on “Uncertainty of eddy covariance flux measurements over an urban area based on two towers” by Leena Järvi et al.', Olaf Menzer, 14 Jul 2018
- AC2: 'Comments for RC2', Leena Järvi, 14 Aug 2018

Peer-review completion

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

AR by Lorena Grabowski on behalf of the Authors (20 Aug 2018) Author's response

ED: Publish as is (06 Sep 2018) by Christian Brümmer

Short summary

Identical EC systems on two sides of a building in central Helsinki were used to assess the uncertainty of the vertical fluxes on the single measurement point from July 2013 to September 2015. Sampling at only one point yielded up to 12% underestimation in the cumulative carbon fluxes; for sensible and latent heat the respective values were up to 5 and 8%. The commonly used statistics, kurtosis and skewness, are not necessarily suitable for filtering out data in a densely built urban area.