EGS XXVI General Assembly, Nice, France, March 2001

OA14.01 Surface fluxes over land and ocean: Surface fluxes - local scale over land (co-sponsored by HS) - Oral Programme

Convener(s): Foken, T.
Co-Convener(s): Hasager, C.B.
Co- Sponsorship:

Monday, 26 March 2001
Lecture Room: Calliope

Chairperson: Foken, T.

08:30
 ONCLEY, S.P.; FOKEN, T.; VOIGT, R.; BERNHOFER, C.; KOHSIEK, W.; LIU, H.; PITACCO, A.; GRANTZ, D.; RIBERIO, L.
The Energy Balance Experiment EBEX-2000 (Solicited Paper)

09:00
 BRUCKMEIER, C.; FOKEN, TH.
The Influence of Corrections for the Eddy Covariance Method on the Energy Balance Closure

09:15
 MORGENSTERN, K.; IBROM, A.; LIAKATAS, A.; ALEXANDRIS, S.
Data quality control of Eddy-Covariance measurements: results from the mogostos forest project

09:30
 MORGENSTERN, K.; BLACK, T.A.; BARR, A.; NESIC, Z.
Atmospheric surface layer spectra above rough surfaces derived from two boreal forest stands

09:45
 FALK, U.; IBROM, A.; ANHUF, D.; MOTZER, T.; GRAVENHORST, G.
Eddy correlation measurements of CO2, H2O and heat fluxes above a neotropical rainforest in Southern Venezuela

10:00
 RUMMEL, U.; AMMANN, C.; MEIXNER, F.X.
On turbulent exchange between a primary rain forest and the atmosphere using surface renewal analysis

10:15
 JENSEN, N.O.; HUMMELSHOEJ, P.; COURTNEY, M.S.
Discussion of some technical aspects of the relaxed eddy accumulation (REA) technique for vertical fluxes

10:30
 BREAK
Chairperson: Oncley, S.P.

11:00
 Karl, T.; Guenther, A.; Lindinger, C.; Jordan, A.; Fall, R.; Lindinger, W.
Oxygenated VOC Fluxes from Crop Harvesting using Proton-Transfer-Reaction Mass Spectrometry and Eddy Covariance

11:15
 BURKARD, R.; EUGSTER, W.; THALMANN, E.; KLEMM, O.; WRZESINSKY, T.
Fog Deposition Measurements with the Eddy Covariance Method at three different sites in Central Europe

11:30
 PAHLOW, M.; KOVALEV, V.A.; PARLANGE, M.B.; EICHINGER, W.E.
Combination of multi- and two-angle methods to obtain backscatter and extinction profiles of atmospheric aerosol with LIDAR

11:45
 TANNY, J.; COHEN, S.
The effect of a shade net on the aerodynamic properties of wind over a citrus orchard

12:00
 ANDRETTA, M.; ROTACH, M.; CALANCA, P.
Near-surface boundary-layer in an alpine valley

12:15
 RICHNER, H.; GUBSER, ST.
Heat flux at different altitudes during foehn situations

12:30
 Dellwik, E.; Pilegaard, K.; Jensen, N.O.
Comparison of canopy, trunkspace and soil CO2 flux measurements for a temperate beech forest over an annual cycle

12:45
 SIMON, E.; AMMANN, C.; MEIXNER, F.X.
Inferring nighttime sources/sink distributions of CO_2 and energy within a cereale canopy with Lagrangian Dispersion Analysis and free convection similarity

13:00
 LUNCH
Chairperson: Hasager, C.B.

14:00
 KLJUN, N.; KASTNER-KLEIN, P.; ROTACH, M.W.; FEDOROVICH, E.
Evaluation of a 3D Lagrangian Footprint Model with Wind Tunnel Datasets for the Convective Boundary Layer

14:15
 WAYSON, C.A.; SCHMID, H.P.; RANDOLPH, J.C.
Spatial representativeness and footprint climatology of CO2 flux measurements over a mixed deciduous forest

14:30
 VILLANI, M.G.; SCHMID, H.P.; KLJUN, N.
Application of a footprint model to a forest canopy

14:45
 MARKKANEN, T.; RANNIK, UE.; VESALA, T.
Footprint estimates for flux measurements over a forest

15:00
 LEVY, P.E.; MILNE, R.
Effects of spatial heterogeneity on sampling errors in CO2 flux measurements over uneven-aged forests

15:15
 Dellwik, E.; Jensen, N.O.
Evaluation of the aerodynamic and viscous sub-layer resistances for a beech forest with limited fetch

15:30
 PANFEROV, O.; IBROM, A.; KNYAZIKHIN, Y.; GRAVENHORST, G.
Simulation of forest structure adaptation to light environment for improvement of modeling of SW radiation and CO2 flux

15:45
 ALBERTSON, J.D.; MONTALDO, N.; KIELY, G.
Should Modeled and Observed Land Surface Temperatures be Equal? ? Defining the Ideal Case for Data Assimilation Goals.

16:00
 BREAK
Chairperson: Foken, T.

16:30
 RAASCH, S.; HARBUSCH, G.
An Analysis of Secondary Circulations and their Effects Caused by Small-Scale Surface Inhomogeneities Using Large-Eddy Simulation

16:45
 ARNOLD, K.; RAABE, A.; ZIEMANN, A.
Acoustic tomography in comparison with in-situ temperature measurements

16:48
 ZIEMANN, A.; ARNOLD, K.; RAABE, A.
Near-srface volume-averaged meteorological data provided by acoustic travel time tomography

16:51
 EVANS, J.G.; McNEIL, D.D.; CULF, A.D.
A integrated low-power open-path instrument for the measurement of water vapour and carbon flux from the surface

16:54
 CASTELLVI, F.; PEREZ, P.J.
High frequency temperature measurements to estimate the sensible heat flux eliminating the height dependence

16:57
 SCHIPA, S.; CAVA, D.; GIOSTRA, U.
Topographically Perturbed Turbulence Structure in and above a Plant Canopy

17:00
 DI MARCO, C.; CIESLIK, S.
The relationship between stationarity and the Taylor hypothesis, investigated by sonic anemometry and scintillometry

17:03
 HUPET, F.; VANCLOOSTER, M.
Effect of the sampling frequency of meteorological variables on the estimation of the refence evapotranspiration

17:06
 HARTOG, E.; VILA- GUERAUDE ARELLANO, J.; NIEVEEN, J.P.; JACOBS, A.F.G.; BUILTJES, P.J.H.
Statistical and spectral analysis for wind and scalars in a peat bog grassland

17:09
 KOWALSKI, A.S.; SARTORE, M.; LOUSTAU, D.
Eddy covariance fluxes of carbon dioxide, latent and sensible heat over a clear-cut in the forest Les Landes de Gascogne

17:12
 SOLER, M.R.; BENEITO, J.; AVILA, A.; AlARCON, M.; GRACIA, C.; SABATE, S.
Measurements of CO2 fluxes using micrometerological techniques in the stable boundary layer.

17:15
 MESZAROS, R.; HORVATH, L.; WEIDINGER, T.
Ammonia flux measurement over a Central-European semi-natural grassland

17:18
 PRESSLEY, S.; HUTTON, J.; SCHMID, H.P.; LAMB, B.; WESTBERG, H.; SU, H.-B.
Energy fluxes and transport of trace gases in and over a

17:21
 THALMANN, E.; EUGSTER, W.; BURKARD, R.; KLEMM, O.; WRZESINSKY, T.
Comparison of wet and occult deposition to a forested ecosystem

17:24
 SUNI, T.; VESALA, T.; MARKKANEN, T.; BERNINGER, F.; HARI, P.; MÄKELÄ, A.; ILVESNIEMI, H.; NIKINMAA, E.; LAURILA, T.; AURELA, M.
Spring recovery in a Scots pine forest in Southern Finland

17:27
 CHANZY, A.; FINDELING, A.; DE LOUVIGNY, N.; FIES, J.-C.
Heat and water flows in a soil/mulch system: model presentation and experimental evaluation