caa a22 4500 445800305 CHVBK 20180317145138.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00704-011-0446-4 doi (NATIONALLICENCE)springer-10.1007/s00704-011-0446-4 The impact of logging on the surrounding flow in a managed forest [Elektronische Daten] [Gengsheng Zhang, Monique Leclerc, Anandakumar Karipot, Henrique Duarte, Erich Mursch-Radlgruber, Henry Gholz] The influence of a freshly logged area in a managed pine forest on the flow field is investigated by comparing sodar wind profile data over the forest canopy with the synoptic wind field extracted from North American Regional Reanalysis, National Centers for Environmental Prediction. As a consequence of the pressure gradient arising from the sharp temperature difference between the clearcut and the surrounding uncut forests, the local wind direction over the forest measured with the sodar departs dramatically from the prevailing synoptic wind direction when the latter is transverse to the clearcut-sodar direction. Sodar measurements also indicate systematic strong updrafts during daytime followed by nighttime downdrafts with wind coming from the logged area. This suggests the presence of horizontal advection carrying daytime warm air (or nighttime cool air) from the clearcut to the forested area. This paper also examines the influence of wind velocity, clearcut fetch, and solar radiation on locally generated circulations and advection. The presence of local circulations arising from contrasting neighboring surface characteristics well outside the footprint is of particular relevance for atmospheric flux sites where robust surface-atmosphere exchange values are sought. This study highlights the high level of circumspection required at the time of identifying locations for flux sites. It also suggests vigilant monitoring of the surrounding landscape during eddy-flux measurements particularly in actively managed landscapes. Springer-Verlag, 2011 Zhang Gengsheng Laboratory for Environmental Physics, The University of Georgia, 1109 Experiment Street, 30223, Griffin, GA, USA aut Leclerc Monique Laboratory for Environmental Physics, The University of Georgia, 1109 Experiment Street, 30223, Griffin, GA, USA aut Karipot Anandakumar Laboratory for Environmental Physics, The University of Georgia, 1109 Experiment Street, 30223, Griffin, GA, USA aut Duarte Henrique Laboratory for Environmental Physics, The University of Georgia, 1109 Experiment Street, 30223, Griffin, GA, USA aut Mursch-Radlgruber Erich Institute of Meteorology and Physics, University of Agricultural Sciences Vienna, Türkenschanzstr. 18, A-1180, Wien, Austria aut Gholz Henry Division of Environmental Biology, National Science Foundation, 4201 Wilson Blvd., 22230, Arlington, VA, USA aut Theoretical and Applied Climatology Springer Vienna 106/3-4(2011-12-01), 511-521 0177-798X 106:3-4<511 2011 106 704 https://doi.org/10.1007/s00704-011-0446-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00704-011-0446-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Gengsheng Laboratory for Environmental Physics, The University of Georgia, 1109 Experiment Street, 30223, Griffin, GA, USA aut NATIONALLICENCE 700 1- Leclerc Monique Laboratory for Environmental Physics, The University of Georgia, 1109 Experiment Street, 30223, Griffin, GA, USA aut NATIONALLICENCE 700 1- Karipot Anandakumar Laboratory for Environmental Physics, The University of Georgia, 1109 Experiment Street, 30223, Griffin, GA, USA aut NATIONALLICENCE 700 1- Duarte Henrique Laboratory for Environmental Physics, The University of Georgia, 1109 Experiment Street, 30223, Griffin, GA, USA aut NATIONALLICENCE 700 1- Mursch-Radlgruber Erich Institute of Meteorology and Physics, University of Agricultural Sciences Vienna, Türkenschanzstr. 18, A-1180, Wien, Austria aut NATIONALLICENCE 700 1- Gholz Henry Division of Environmental Biology, National Science Foundation, 4201 Wilson Blvd., 22230, Arlington, VA, USA aut NATIONALLICENCE 773 0- Theoretical and Applied Climatology Springer Vienna 106/3-4(2011-12-01), 511-521 0177-798X 106:3-4<511 2011 106 704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer