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Author Dumont, B.; Leemans, V.; Ferrandis Vallterra, S.; Vancutsem, F.; Seutin, B.; Bodson, B.; Destain, J.-P.; Destain, M.-F. url  openurl
  Title A first step towards a real-time predictive yield support system Type Conference Article
  Year 2012 Publication Abbreviated Journal  
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  Keywords (down) CropM  
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  Area Expedition Conference CIGR-AgEng 2012, International Conference on Agricultural Engineering, Valencia (Spain)., 2012-07-07 to 2012-07-12  
  Notes Approved no  
  Call Number MA @ admin @ Serial 2403  
Permanent link to this record
 

 
Author Deligios, P.; Ledda, L.; Farci, R.; Doro, L.; Roggero, P.P. openurl 
  Title Impatto dei cambiamenti climatici sulla produzione di colza da bioenergia in un ambiente mediterraneo Type Conference Article
  Year 2012 Publication Abbreviated Journal  
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  Area Expedition Conference XLI Convegno annuale Società Italiana di Agronomia, Bari, Italy, 2012-09-19 to 2012-09-21  
  Notes Approved no  
  Call Number MA @ admin @ Serial 2387  
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Author Smoron, S. url  openurl
  Title The risk of surface waters eutrophication in loessial uplands of Malopolska Type Report
  Year 2012 Publication Woda Srodowisko Obszary Wiejskie Abbreviated Journal  
  Volume 121 Issue Pages 167-179  
  Keywords (down) CropM  
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  Language Summary Language Original Title  
  Series Editor ITP Falenty Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number MA @ admin @ Serial 2069  
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Author Kowalczyk, A.; Twardy, S. url  openurl
  Title Comparison of the water erosion magnitude estimated by the modified USLE methods Type Report
  Year 2012 Publication Woda Srodowisko Obszary Wiejskie Abbreviated Journal  
  Volume 121 Issue Pages 83-92  
  Keywords (down) CropM  
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  Language Summary Language Original Title  
  Series Editor ITP Falenty Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number MA @ admin @ Serial 2068  
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Author Francone, C.; Katul, G.G.; Cassardo, C.; Richiardone, R. url  doi
openurl 
  Title Turbulent transport efficiency and the ejection-sweep motion for momentum and heat on sloping terrain covered with vineyards Type Journal Article
  Year 2012 Publication Agricultural and Forest Meteorology Abbreviated Journal Agricultural and Forest Meteorology  
  Volume 162-163 Issue Pages 98-107  
  Keywords (down) coherent motion; cumulant expansions; heat and momentum transfer; sloping terrain; vineyards; planar fit method; boundary-layers; reynolds stress; dense canopies; plant canopies; flow; fluxes; forest; fields; hills  
  Abstract In boundary layer flows, it is now recognized that the net momentum and mass exchange rates are dominated by the statistical properties of ejecting and sweeping motion often linked to the presence of coherent turbulent structures. Over vineyards, three main factors impact the transport properties of such coherent motion: presence of sloping terrain, variations in leaf area index (LAI) during the growing season, and thermal stratification. The effect of these factors on momentum and heat transport is explored for three vineyard sites situated on different slopes. All three sites experience similar seasonal variation in LAI and mean wind conditions. The analysis is carried out using a conventional quadrant analysis technique and is tested against two models approximating the joint probability density function (JPDF) of the flow variables. It is demonstrated that a Gaussian JPDF explains much of the updraft and downdraft statistical contributions to heat and momentum transport efficiencies for all three sites. An incomplete or truncated third-order cumulant expansion method (ICEM) of the JPDF that retains only the mixed moments and ignores the skewness contributions describes well all the key properties of ejections and sweeps for all slopes, LAI, and stability classes. The implication of these findings for diagnosing potential failures of gradient-diffusion theory over complex terrain is discussed. Because only lower order moments are needed to describe the main characteristics of the JPDF, the use of the Moving Equilibrium Hypothesis (MEH) to predict these moments from the locally measured sensible heat flux and friction velocity is explored. Provided the planar fit coordinate transformation is applied to the data, the MEH can describe these statistical moments at all three sites regardless of terrain slopes and LAI values. (C) 2012 Elsevier B.V. All rights reserved.  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0168-1923 ISBN Medium Article  
  Area Expedition Conference  
  Notes CropM Approved no  
  Call Number MA @ admin @ Serial 4471  
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