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Dissertations / Theses on the topic 'Eddy Covariance Methods'

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Published: 2 June 2025
Last updated: 31 July 2025

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1

Göckede, Mathias. "Adoption of footprint methods for the quality control of Eddy-covariance measurements." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975128248.

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2

Stauch, Vanessa Juliane. "Data-led methods for the analysis and interpretation of eddy covariance observations." [S.l.] : [s.n.], 2007. http://opus.kobv.de/ubp/volltexte/2007/1238.

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3

Stauch, Vanessa Juliane. "Data-led methods for the analysis and interpretation of eddy covariance observations." Phd thesis, kostenfrei, 2006. http://opus.kobv.de/ubp/volltexte/2007/1238/.

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4

Papa, Rita. "Micrometeorological approaches to measure and model surface energy fluxes of irrigated citrus orchards in a semi-arid environment." Doctoral thesis, Università di Catania, 2013. http://hdl.handle.net/10761/1336.

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The object of the research project was to propose and develop innovative theoretical methods for evaluating mass and energy exchange processes within one of the most relevant crop of the agricultural Sicilian context. The study was conceived as a long monitoring program of micrometeorological features of the study orange orchard at different spatial scales (plant, orchard, farm). Different micrometeorological methods, mainly based on Surface Renewal theory, were studied and tested, in order to provide reliable and low cost estimates of sensible heat fluxes within the plant-atmosphere system. M
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5

Norman, Maria. "Air-Sea Fluxes of CO2 : Analysis Methods and Impact on Carbon Budget." Doctoral thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-194960.

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Carbon dioxide (CO2) is an important greenhouse gas, and the atmospheric concentration of CO2 has increased by more than 100 ppm since prior to the industrial revolution.  The global oceans are considered an important sink of atmospheric CO2, since approximately one third of the anthropogenic emissions are absorbed by the oceans. To be able to model the global carbon cycle and the future climate, it is important to have knowledge of the processes controlling the air-sea exchange of CO2. In this thesis, measurements as well as a model is used in order to increase the knowledge of the exchange p
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6

Nilsson, Charlotta. "Beräkning av turbulenta flödenenligt inertial dissipationsmetodenmed mätdata från enspecialkonstrueradlättviktsanemometer samtjämförelsemed turbulenta utbytesmetoden." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-303161.

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För att ta reda på användbarheten av en specialkonstruerad lättviktsanemometer när det gälleratt beräkna turbulenta flöden, har mätdata från instrumentet använts i den så kallade inertialdissipationsmetoden. Resultatet har jämförts med direkta flödesberäkningar från enljudanemometer enligt turbulenta utbytesmetoden, vilka antas vara korrekta. Resultatanalyshar utförts från mätningar på höjderna 8, 16 och 20 m. Lättviktssanemometern (inertialdissipationsmetoden) visade sig stämma bra överens med ljudanemometern (turbulentautbytesmetoden) under nära neutrala förhållanden och vid höga vindhastigh
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7

Carneiro, Janaína Viário. "Fluxos turbulentos de CO2 em uma área de arroz irrigado no RS." Universidade Federal de Santa Maria, 2007. http://repositorio.ufsm.br/handle/1/9185.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This thesis quantifies the net change of CO2 (NEE) in an irrigated rice crop cultivation in RS (Brazil). The research is part of the project CT-HIDRO, which presents as main purpose the description of surface conditions for different ecosystems in the country. Data were gathered during the cultivation period, from October 2003 to March 2004. During this time, the average air temperature and the incident radiation were suitable for the development of the culture in such an area. The turbulent flows, calculated by the eddy covariance
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8

Caire, François. "Les équations de Maxwell covariantes pour le calcul rapide des champs diffractés par des conducteurs complexes. Application au Contrôle Non Destructif par courants de Foucault." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112284/document.

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Ce travail de thèse a pour objectif de fournir un outil de modélisation rapide de l'interaction d'une source électromagnétique 3D avec une pièce de géométrie ou de propriétés physiques complexes dans le domaine des basses fréquences (régime quasi-statique). La principale application est la simulation d'un procédé de Contrôle Non Destructif (CND) d'une pièce conductrice présentant une surface ou des propriétés physiques perturbées. La plateforme logicielle CIVA, comportant un module dédié à la simulation des procédés de CND par courants de Foucault intègre à l’heure actuelle des modèles semi-an
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9

Mårtensson, Monica. "Submicrometre aerosol emissions from sea spray and road traffic." Doctoral thesis, Stockholm University, Department of Meteorology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7006.

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<p>The uncertainty of the climate and health effects of aerosols is still large, one important reason being lack of knowledge of the primary emissions. This thesis combines laboratory and field experiments, and process modelling in an effort to better quantify the submicrometre aerosol emissions and to understand some of the processes in the atmosphere.</p><p>A parameterisation was derived for the source flux of sea salt particles (particles m<sup>-2 </sup>s<sup>-1</sup>) in the size range 0.02-2.8 µm dry diameter (D<sub>p</sub>), it is the first parameterisation to almost cover two full decad
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10

Good, Brian J. "The contribution of low frequency fluctuations to surface fluxes estimated by eddy covariance methods." 2003. http://catalog.hathitrust.org/api/volumes/oclc/51766833.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2003.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 69-73).
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11

Stauch, Vanessa Juliane [Verfasser]. "Data-led methods for the analysis and interpretation of eddy covariance observations / Vanessa Juliane Stauch." 2007. http://d-nb.info/983488754/34.

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12

Wu, Chih-Chen, and 吳致甄. "Comparative gap-filling methods for eddy covariance carbon dioxide fluxes at Chi-Lan Mountain Site." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/48927543214703219228.

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碩士<br>國立東華大學<br>自然資源管理研究所<br>97<br>The eddy covariance method has been taken as the best available technique to monitor the net exchange rate of scalars and energy between the ecosystem and atmosphere if the underlying surface were homogeneous and flat. However, if the above ideal conditions could not be met, the application of eddy covariance method will face a lot of limitations and adjustments have to be made on the originally estimated eddy fluxes. One the well known adjustment is the nighttime flux correction as the stable air limiting the turbulence development. For the Chi-Lan Mountain
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13

Göckede, Mathias [Verfasser]. "Adoption of footprint methods for the quality control of Eddy-covariance measurements / presented by Mathias Göckede." 2005. http://d-nb.info/975128248/34.

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14

Soloway, Ashley. "A comparison of gap-filling methods for a long-term eddy covariance dataset from a Northern Old-growth Black Spruce forest." 2016. http://hdl.handle.net/1993/31600.

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Boreal old-growth forests are key determinants in the global carbon cycle. It is unknown how the role of persistent old-growth forests will be in the carbon cycle in the face of predicted climatic changes. Eddy-covariance measurements are commonly used to quantify carbon exchange between ecosystems, such as forests, and the atmosphere. Error due to gap-fill method is of particular interest in these datasets. Here we filled a 15-year eddy covariance dataset from the Northern Old-Growth Boreal Black Spruce (Picea mariana) site located near Thompson, in central Manitoba, Canada using four differe
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15

Shi, Hao. "A joint analysis of gross primary production and evapotranspiration of Australia using eddy covariance, remote sensing and land surface modelling approaches." Thesis, 2017. http://hdl.handle.net/10453/90289.

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University of Technology Sydney. Faculty of Science.<br>The aim of this thesis is to analyze the patterns of gross primary production (GPP) and evapotranspiration (ET) across Australian biomes in combination of eddy covariance, remote sensing and land surface model (LSM) methods, taking advantage of their respective applicability on different space and time scales. To do this, I (1) used the wavelet method to decompose eddy covariance observed half-hourly GPP and ET into different frequencies from hourly to annual to investigate the coupling of GPP and ET and their interactions with climate an
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16

Hsu, Shih-Chi, and 許適棋. "Application of Eddy Covariance Method and Relaxed Eddy Accumulation Method on Estimating Surface Fluxes." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/15014692487975512013.

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碩士<br>國立中央大學<br>水文與海洋科學研究所<br>102<br>This study uses high resolution time series (10Hz) of wind components (u, v, w), sonic temperature (Ts), carbon dioxide (CO2), and vapor(H2O) density data to compute surface fluxes with application of Eddy Covariance method (EC) and Relaxed Eddy Accumulation method (REA). Eddy Covariance method is the most accurate method for measuring surface fluxes at the atmospheric boundary layer. However, the cost of fast response equipment required for EC measurement is very expensive for some trace gases. Recently, REA measurement, without the need of fast response e
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17

Li, Yi-Shian, and 李宜憲. "Verify the Bowen Ratio equation by using Eddy Covariance Method." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/51198309593008991636.

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碩士<br>國立臺灣大學<br>環境工程學研究所<br>100<br>The air quality model to simulate pollutants’ diffusion is affected by the diffusion degree that determined by the atmospheric stability, and the calculation of the atmospheric stability can be obtained from sensible heat flux. Bowen ratio, the ratio between sensible heat flux and latent heat flux, and its rational decision will change the value of sensible heat flux as well as subsequently modify the result of contaminants simulation. Therefore, instead of setting Bowen ratio as a constant by recent air quality models, this research applies the theory of the
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18

Yuan, Yi-fu, and 袁一夫. "Applying the flux variance method and the eddy covariance method to estimate surface fluxes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/ebv8mg.

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碩士<br>國立中央大學<br>水文所<br>96<br>This study applied the eddy covariance method (ECM) and the flux variance method (FVM) to estimate water vapor and energy fluxes and discussed the differences of fluxes estimated in dry and wet seasons at the Lien-Hua-Chih (LHC) station, Nantou. The energy closure errors of ECM were acceptable and results of dry season were better than those of wet season. The universal constants for the Monin-Obukhov similarity theory should be determined prior to the application of FVM. In this study, the universal constants determined in dry season were greater than those in wet
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19

Lin, Ji-Yu, and 林繼于. "The Averaging Period for Eddy covariance method－the Chi-Lan Mountain Site." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/51065064976202528529.

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碩士<br>國立東華大學<br>自然資源管理研究所<br>98<br>The eddy covariance method has been used to evaluate the fluxes of scalars and energy between the ecosystem and atmosphere. It bases on the Reynolds decomposition theory to separate the change of scalars and energy into the average and variance components. Through the time average procedure on the instantaneous measured raw data, fluxes carried by atmospheric turbulence can be estimated by the covariance of deviations of mean scalars and wind. However, if the chosen averaging period is too short, fluxes carried by low-frequency eddy might be lost resulting an
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20

Wang, Yi-Chih, and 王奕智. "Comparison of observed air-water CO2 fluxes by the eddy covariance system and the profile method." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/51529065971356246263.

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碩士<br>國立中興大學<br>環境工程學系所<br>100<br>CO2 flux has been estimated by close path CO2 analyzer for decades. Recently, Open path CO2 analyzer has been used in CO2 flux measurements over ocean. However, there still exited significant difference between each other. The purposes of this study are to compare the CO2 flux measured from (1) two open path eddy covariance systems (ECS) at 40 centimeter and 16 meter above the water surface; (2) the profile method sampling at 10, 15 and 20 centimeter above the water surface; (3) the underway-pCO2 system and (4) the dissolved oxygen method. The study site is lo
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21

Chen, Kuan-Yin, and 陳觀印. "Developing Gap Filling Techniques for Latent Heat and Carbon Fluxes Measured by the Eddy Covariance Method." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/r5585d.

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碩士<br>國立中央大學<br>水文與海洋科學研究所<br>107<br>Data gaps in flux measurements are continuous challenges in flux communities. Robust and consistent gap-filling techniques are essential to the integrated synthesis among different sites. In our previous studies (Chen et al., 2012), a gap-filling model for eddy covariance latent heat (LE) fluxes was developed by integrating the principal component analysis (PCA) and a nonlinear interpolation approach for resolving the multi-collinearity relationships between environmental variables measured by low frequencies instruments and LE fluxes estimated with high fr
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22

Havránková, Kateřina. "Fluxes of energy and substances in mountain spruce forest :analysis of CO2 flux measured by Eddy-covariance method /." Doctoral thesis, 2003. http://www.nusl.cz/ntk/nusl-88489.

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23

Bleyl, Matthias. "Experimentelle Bestimmung der Depositionsgeschwindigkeit luftgetragener Partikel mit Hilfe der Eddy-Kovarianzmethode über einem Fichtenaltbestand im Solling." Doctoral thesis, 2001. http://hdl.handle.net/11858/00-1735-0000-0006-B25A-0.

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