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Interactive comment on “ Uncertainty of eddy covariance flux measurements over an urban area based on two towers ” by Leena Järvi
| Content Provider | Semantic Scholar |
|---|---|
| Author | Järvi, L. |
| Copyright Year | 2018 |
| Abstract | L18: I suggest writing: “Combining the data from two EC systems also increases the percentage of usable half-hourly carbon fluxes from 45% to 69% at the annual level.” Abstract, LL17-19: I suggest to also give absolute values for the underestimation in grams of Carbon p.a., next to the 12% and 5-8%. Abstract, L22: Which uncertainties are you referencing here? Random, systematic, or both? Please specify. (If I understood correctly, you are referencing both systematic uncertainties due to excluding flow-distorted wind sectors, and, random uncertainties due to turbulent sampling errors as assessed by the relative random uncertainty (RRE) metric.) LL17-19: I suggest to also give absolute values for the underestimation in grams of Carbon p.a., next to the 12% and 5-8%. Abstract, L22: Which uncertainties are you referencing here? Random, systematic, or both? Please specify. (If I understood correctly, you are referencing both systematic uncertainties due to excluding flow-distorted wind sectors, and, random uncertainties due to turbulent sampling errors as assessed by the relative random uncertainty (RRE) metric.) Abstract, L22: I suggest changing “The same results can be assumed to apply in similar dense city locations [. . .]” to “Comparable results can be expected in similarly dense city locations [. . .]” Pg2, L26: please add a reference. Pg2, L27: “to reject large amount of data”: I suggest writing “to reject a relatively large fraction of the data”. Pg3, L2: I suggest writing “On top of that, any statistical gap-filling technique can be biased [. . .]” instead of “Either way, statistical gap-filling techniques can be biased [. . .]” Pg3, L8: I would add the study of Hollinger & Richardson (2005) to this list of paired tower approaches, since it was the first of its kind. Pg3, L19: Figure reference is missing. (???) Section 2.1: Can the authors please add one sentence in section 2.1 (Site description) on the representativeness of the flux source area as surveyed by the tower with C4 L22: I suggest changing “The same results can be assumed to apply in similar dense city locations [. . .]” to “Comparable results can be expected in similarly dense city locations [. . .]” Pg2, L26: please add a reference. Pg2, L27: “to reject large amount of data”: I suggest writing “to reject a relatively large fraction of the data”. Pg3, L2: I suggest writing “On top of that, any statistical gap-filling technique can be biased [. . .]” instead of “Either way, statistical gap-filling techniques can be biased [. . .]” Pg3, L8: I would add the study of Hollinger & Richardson (2005) to this list of paired tower approaches, since it was the first of its kind. Pg3, L19: Figure reference is missing. (???) Section 2.1: Can the authors please add one sentence in section 2.1 (Site description) on the representativeness of the flux source area as surveyed by the tower with C4 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.atmos-meas-tech-discuss.net/amt-2018-89/amt-2018-89-AC2.pdf |
| Alternate Webpage(s) | https://www.atmos-meas-tech-discuss.net/amt-2018-89/amt-2018-89-RC1-print.pdf |
| Alternate Webpage(s) | https://www.atmos-meas-tech-discuss.net/amt-2018-89/amt-2018-89-AC2-print.pdf |
| Alternate Webpage(s) | https://www.atmos-meas-tech-discuss.net/amt-2018-89/amt-2018-89-RC2-print.pdf |
| Alternate Webpage(s) | https://www.atmos-meas-tech-discuss.net/amt-2018-89/amt-2018-89-RC1.pdf |
| Alternate Webpage(s) | https://www.atmos-meas-tech-discuss.net/amt-2018-89/amt-2018-89-AC1-print.pdf |
| Alternate Webpage(s) | https://www.atmos-meas-tech-discuss.net/amt-2018-89/amt-2018-89-AC1.pdf |
| Alternate Webpage(s) | https://www.atmos-meas-tech-discuss.net/amt-2018-89/amt-2018-89-RC2.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
