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Turbulent transport of energy across a forest and a semiarid shrubland

Banerjee, Tirtha 1,2; Brugger, Peter 1,2; De Roo, Frederik 1,2; Kröniger, Konstantin 1,2; Yakir, Dan; Rotenberg, Eyal; Mauder, Matthias 1,2
1 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)
2 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)

The role of secondary circulations has recently been studied in the context of well-defined surface heterogeneity in a semiarid ecosystem where it was found that energy balance closure over a desert–forest system and the structure of the boundary layer was impacted by advection and flux divergence. As a part of the CliFF (“Climate feedbacks and benefits of semi-arid forests”, a collaboration between KIT, Germany, and the Weizmann Institute, Israel) campaign, we studied the boundary layer dynamics and turbulent transport of energy corresponding to this effect in Yatir Forest situated in the Negev Desert in Israel. The forest surrounded by small shrubs presents a distinct feature of surface heterogeneity, allowing us to study the differences between their interactions with the atmosphere above by conducting measurements with two eddy covariance (EC) stations and two Doppler lidars. As expected, the turbulence intensity and vertical fluxes of momentum and sensible heat are found to be higher above the forest compared to the shrubland. Turbulent statistics indicative of nonlocal motions are also found to differ over the forest and shrubland and also display a strong diurnal cycle. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000084984
Veröffentlicht am 01.08.2018
DOI: 10.5194/acp-18-10025-2018
Zitationen: 6
Web of Science
Zitationen: 6
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2018
Sprache Englisch
Identifikator ISSN: 1680-7324
KITopen-ID: 1000084984
HGF-Programm 12.02.05 (POF III, LK 01) Atmospheric Exchange Processes
Erschienen in Atmospheric chemistry and physics
Verlag European Geosciences Union (EGU)
Band 18
Heft 13
Seiten 10025–10038
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 16.07.2018
Nachgewiesen in Dimensions
Web of Science
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