FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4322007029> ?p ?o ?g. }

• W4322007029 abstract "There is an urgent need to provide data for greenhouse gases (GHG) monitoring. Flux towers currently represent the most direct approach to provide continuous datasets of surface exchange of these gases. Typically, the flux is derived from the EC method over 30 minutes averaging periods. However, technical and meteorological conditions create gaps with missing or non-reliable data which can represent from 20 % to 60 % of the total period. To compute annual GHG balances, one needs to fill these gaps. Studies on benchmark forest datasets show that gap-filling methods, such as the marginal distribution sampling (MDS), have a good performance on hourly and daily data as well as on annual budgets. This overall setup (EC and MDS gap-filling) is the standard for consolidated datasets over FLUXNET and most flux networks (e.g. Warm Winter 2020 available at www.icos-cp.eu/).Direct observations are the base of the gap-filling itself and should be praised over gap-filling techniques. More so, the flux community nowadays faces new challenges by moving towards less ideal sites (e.g. European PAUL-ICOS-Cities project to monitor city GHG fluxes), and facing increasing extremes conditions (e.g. Drought-2018, available at www.icos-cp.eu/). In these less conventional frameworks, gap-filling techniques need to be evaluated. Among flux processing techniques, wavelets (WV) can reliably measure non-stationary periods and thus retain more data than standard EC. It does that by resolving flux calculation at sampling rate. For flux measurements it has been most notably used for airborne measurement as it allows computing a flux over short enough periods to attribute the measured flux to a limiter land area.Here we analyse the CO2 flux over the three consecutive years (2019, 2020 and 2021) in two ICOS sites: FR-Gri, a crop site and FR-Fon a mixed deciduous forest site, both near Paris, France. Results show that from 52 606 data points in FR-Fon, around 50% needed to be gap filled, this includes 11% of missing data and 22% of periods with developed turbulence but non-stationary. Preliminary results for 2019 in FR-Gri show similar ranges. By not requiring stationarity, WV method avoid close to half of the gap filling compared to EC. Comparing 30-minutes-averaged fluxes derived from EC and WV shows good correlation (R&#178;=0.99 for observed data and 0.94 for gap filled data), low root mean square error (RMSE=1.12 &#160;for observed data and 1.95 for gap filling). The extra data also decreased continuous gaps, which is expected to improve the performance of gap filling methods. More so, during summer 2019 heatwaves stroke Europe and in particularly French ecosystems. On the flux data, daytime observations during elevated temperatures in 2019 show a WV derived CO2 fluxes closer to zero, suggesting the expected response of stomatal closure during these events. The gap-filled EC data, however, showed relatively unchanged photosynthesis. This study shows the usefulness of using WV computed CO2 fluxes, a result expected to remain valid for longer time series and for other ecosystems and meteorological conditions." @default.
• W4322007029 created "2023-02-26" @default.
• W4322007029 creator A5011882784 @default.
• W4322007029 creator A5020178407 @default.
• W4322007029 creator A5022557344 @default.
• W4322007029 creator A5049719496 @default.
• W4322007029 creator A5050625435 @default.
• W4322007029 creator A5051826289 @default.
• W4322007029 creator A5052581007 @default.
• W4322007029 creator A5089362585 @default.
• W4322007029 date "2023-05-15" @default.
• W4322007029 modified "2023-09-30" @default.
• W4322007029 title "Contribution of wavelets to decrease gap filling in turbulent surface fluxes measurements" @default.
• W4322007029 doi "https://doi.org/10.5194/egusphere-egu23-7640" @default.
• W4322007029 hasPublicationYear "2023" @default.
• W4322007029 type Work @default.
• W4322007029 citedByCount "0" @default.
• W4322007029 crossrefType "posted-content" @default.
• W4322007029 hasAuthorship W4322007029A5011882784 @default.
• W4322007029 hasAuthorship W4322007029A5020178407 @default.
• W4322007029 hasAuthorship W4322007029A5022557344 @default.
• W4322007029 hasAuthorship W4322007029A5049719496 @default.
• W4322007029 hasAuthorship W4322007029A5050625435 @default.
• W4322007029 hasAuthorship W4322007029A5051826289 @default.
• W4322007029 hasAuthorship W4322007029A5052581007 @default.
• W4322007029 hasAuthorship W4322007029A5089362585 @default.
• W4322007029 hasConcept C110872660 @default.
• W4322007029 hasConcept C111368507 @default.
• W4322007029 hasConcept C121332964 @default.
• W4322007029 hasConcept C127313418 @default.
• W4322007029 hasConcept C140779682 @default.
• W4322007029 hasConcept C153294291 @default.
• W4322007029 hasConcept C154945302 @default.
• W4322007029 hasConcept C185798385 @default.
• W4322007029 hasConcept C18903297 @default.
• W4322007029 hasConcept C191897082 @default.
• W4322007029 hasConcept C192562407 @default.
• W4322007029 hasConcept C205649164 @default.
• W4322007029 hasConcept C2780797852 @default.
• W4322007029 hasConcept C35187779 @default.
• W4322007029 hasConcept C39432304 @default.
• W4322007029 hasConcept C41008148 @default.
• W4322007029 hasConcept C47432892 @default.
• W4322007029 hasConcept C47737302 @default.
• W4322007029 hasConcept C58640448 @default.
• W4322007029 hasConcept C68709404 @default.
• W4322007029 hasConcept C76155785 @default.
• W4322007029 hasConcept C86803240 @default.
• W4322007029 hasConcept C91586092 @default.
• W4322007029 hasConcept C94915269 @default.
• W4322007029 hasConceptScore W4322007029C110872660 @default.
• W4322007029 hasConceptScore W4322007029C111368507 @default.
• W4322007029 hasConceptScore W4322007029C121332964 @default.
• W4322007029 hasConceptScore W4322007029C127313418 @default.
• W4322007029 hasConceptScore W4322007029C140779682 @default.
• W4322007029 hasConceptScore W4322007029C153294291 @default.
• W4322007029 hasConceptScore W4322007029C154945302 @default.
• W4322007029 hasConceptScore W4322007029C185798385 @default.
• W4322007029 hasConceptScore W4322007029C18903297 @default.
• W4322007029 hasConceptScore W4322007029C191897082 @default.
• W4322007029 hasConceptScore W4322007029C192562407 @default.
• W4322007029 hasConceptScore W4322007029C205649164 @default.
• W4322007029 hasConceptScore W4322007029C2780797852 @default.
• W4322007029 hasConceptScore W4322007029C35187779 @default.
• W4322007029 hasConceptScore W4322007029C39432304 @default.
• W4322007029 hasConceptScore W4322007029C41008148 @default.
• W4322007029 hasConceptScore W4322007029C47432892 @default.
• W4322007029 hasConceptScore W4322007029C47737302 @default.
• W4322007029 hasConceptScore W4322007029C58640448 @default.
• W4322007029 hasConceptScore W4322007029C68709404 @default.
• W4322007029 hasConceptScore W4322007029C76155785 @default.
• W4322007029 hasConceptScore W4322007029C86803240 @default.
• W4322007029 hasConceptScore W4322007029C91586092 @default.
• W4322007029 hasConceptScore W4322007029C94915269 @default.
• W4322007029 hasLocation W43220070291 @default.
• W4322007029 hasOpenAccess W4322007029 @default.
• W4322007029 hasPrimaryLocation W43220070291 @default.
• W4322007029 hasRelatedWork W1998592276 @default.
• W4322007029 hasRelatedWork W2046321599 @default.
• W4322007029 hasRelatedWork W2088228212 @default.
• W4322007029 hasRelatedWork W2370522681 @default.
• W4322007029 hasRelatedWork W2393623528 @default.
• W4322007029 hasRelatedWork W2764235904 @default.
• W4322007029 hasRelatedWork W3022018141 @default.
• W4322007029 hasRelatedWork W4226214988 @default.
• W4322007029 hasRelatedWork W4280572929 @default.
• W4322007029 hasRelatedWork W4309243336 @default.
• W4322007029 isParatext "false" @default.
• W4322007029 isRetracted "false" @default.
• W4322007029 workType "article" @default.