cops_nebt_imk1etg_flux_d: Eddy-covariance turbulence data of the energy balance network (NEBT) operating during COPS 2007: station IMK1ETG (Hornisgrinde)

hdl:21.14106/02e9e29411acd9de786661816b4b9bda5df481ff

Kalthoff, Norbert; Eigenmann, Rafael; Foken, Thomas

Dataset
Summary
The energy balance station IMK1ETG (Hornisgrinde) measured high-frequency (20 Hz) eddy-covariance raw data with a Solent R1012 (Gill Instruments Ltd.) sonic anemometer and a LI-7500 (LI-COR Biosciences) hygrometer above the target land use type heath. The measuring set-up was continuously running during the entire COPS measurement period in order to provide a complete time series of the turbulent fluxes of momentum, sensible and latent heat as well as carbon dioxide. Post-processing was performed using the software package TK2 (developed by the Department of Micrometeorology, University of Bayreuth) which produces quality assured turbulent flux data with an averaging interval of 30 min. The documentation and instruction manual of TK2 (see entry cops_nebt_ubt_info_1) and additional references about the applied flux corrections and post-field data quality control (see entry cops_nebt_ubt_info_2) as well as a document about the general handling of the flux data can be found in supplementary pdf-files within the energy balance and turbulence network (NEBT) experiment of the data base. The turbulent flux data in this data set are flagged according to their quality and checked for an impact of possible internal boundary layers. Additionally, the flux contribution from the target land use type intended to be observed to the total flux measured was calculated applying footprint modeling. Information and references about the internal boundary layer evaluation procedure and the footprint analysis are also given in the additional pdf-files. Pictures of the footprint climatology of the station as related to the land use and to the spatial distribution of the quality flags are included in the corresponding additional info pdf-file (see cops_nebt_imk1etg_info_1).
Project
COPS (Convective and Orographically-induced Precipitation Study)
Location(s)
Energy balance site location (imk1etg) at COPS-Supersite Hornisgrinde, Germany
Additional Information
cops_nebt_imk7t_info_1: pdf-file with foot print climatology at station IMK7T (Igelsberg)
cops_nebt_imk4t_info_1: pdf-file with foot print climatology at station IMK4T (Sasbach)
cops_nebt_mf1etg_info_1: pdf-file with foot print climatology at station MF1ETG (Niederrott)
cops_nebt__ubt3etg_info_1: pdf-file with foot print climatology at station UBT3ETG (Fischerbach)
cops_nebt_imk6t_info_1: pdf-file with foot print climatology at station IMK6T (Bad Rotenfels)
cops_nebt_imk8t_info_1: pdf-file with foot print climatology at station IMK8T (Burnhaupt le Bas)
cops_nebt_ubt1etg_info_1: pdf-file with foot print climatology at station UBT1ETG (Fussbach I)
cops_nebt_imk1etg_info_1: pdf-file with foot print climatology at station IMK1ETG (Hornisgrinde)
cops_nebt_ubt2t_info_1: pdf-file with foot print climatology at station UBT2T (Fussbach II)
uni_hohenheim_data_policy.txt
cops_nebt_imk3etg_info_1: pdf-file with foot print climatology at station IMK3ETG (Linkenheim)
cops_nebt_imk2etg_info_1: pdf-file with foot print climatology at station IMK2ETG (Baden Airpark)
cops_nebt_ubt4etg_info_1: pdf-file with foot print climatology at station UBT4ETG (Hagenbuch)
cops_nebt_ubt_info_2: pdf-file with information on quality control performed by Uni Bayreuth
cops_nebt_ubt_info_1: pdf-file with manual of software package TK2 provided by Uni Bayreuth
cops_nebt_mf2etg_info_1: pdf-file with foot print climatology at station MF2ETG (Nordfeld)
cops_nebt_imk5t_info_1: pdf-file with foot print climatology at station IMK5T (Oberkirch)
cops_nebt_ubn1etg_info_1: pdf-file with foot print climatology at station UBN1ETG (Deckenpfronn)
Spatial Coverage
Longitude 8.2 Latitude 48.6 Altitude: 1158 m relativ to NN
Temporal Coverage
2007-05-30 to 2007-08-31 (calendrical)
Use constraints
For scientific use only
Data Catalog
World Data Center for Climate
Access constraints
registered users
Size
2.04 MiB (2133862 Byte)
Format
NetCDF
Status
completely archived
Creation Date
Download Permission
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Cite as
[ Derived from parent entry - See data hierarchy tab ]
Kalthoff, Norbert; Eigenmann, Rafael; Foken, Thomas (2011). cops_nebt_imk_flux: Eddy-covariance turbulence data from COPS energy balance and turbulence network stations run by FZK/IMK-TRO during COPS 2007. World Data Center for Climate (WDCC) at DKRZ. https://doi.org/10.1594/WDCC/cops_nebt_imk_flux

BibTeX RIS
[Entry acronym: cops_nebt_imk1etg_flux_d] [Entry id: 2216594]
Description
To determine the accuracy of flux measurements, the sonic anemometer sensor type, as well as the classification of the turbulent flux data according to their quality (Foken et al., 2004) can be used (Mauder et al., 2006). Depending on the type of construction of the sonic anemometer, it can be classified as type A or type B (Foken and Oncley, 1995). The Solent R1012 sonic anemometer was classified as type B. In combination with the TK2 quality flags of the turbulent fluxes the accuracy of the flux measurements (sensible and latent heat, for the friction velocity similar percentages can be assumed) can be assessed as follows:

For Type B (Solent R1012):
For quality flags ranging from 1 to 3:
Accuracy of sensible heat flux: 10 % or 20 Wm-2
Accuracy of latent heat flux: 15 % or 30 Wm-2

For quality flags ranging from 4 to 6:
Accuracy of sensible heat flux: 15 % or 30 Wm-2
Accuracy of latent heat flux: 20 % or 40 Wm-2

References:
Foken, T., Goeckede, M., Mauder, M., Mahrt, L., Amiro, B.D., Munger J. W., 2004. Post-field data quality control. In: X. Lee, W. Massman, B. Law (Eds.), Handbook of Micrometeorology, A Guide for Surface Flux Measurement and Analysis, Kluwer, Dordrecht, pp. 181-208.
Foken, T., Oncley, S.P., 1995. Workshop on instrumental and methodical problems of land surface flux measurements. Bulletin of the American Meteorological Society, 76: 1191-1193.
Mauder, M., Liebethal, C., Goeckede, M., Leps, J.P., Beyrich, F., Foken, T., 2006. Processing and quality control of flux data during LITFASS-2003. Boundary-Layer Meteorology, 121: 67-88.
Description
No data are available:
from 09 July 2007 to 12 July 2007
from 18 August 2007 to 19 August 2007
VariableCodeAggregationUnit
absolute_humidity
30min meang m-3
atmospheric_stability_parameter_in_surface_layer
30min mean1
canopy_height
30min meanm
fetch_length
30min meanm
friction_velocity
30min meanm s-1
internal_boundary_layer_thickness
30min meanm
latitude
not filleddegree_north
longitude
not filleddegree_east
mole_concentration_of_carbon_dioxide_in_air
30min meanmmol m-3
mole_concentration_of_carbon_dioxide_in_air (variance)
30min meanmmol2 m-6
sensor_height_above_ground
30min meanm
sonic_temperature
30min meandegC
status_flag_of_friction_velocity
30min meannone
status_flag_of_internal_boundary_layer_thickness
30min meannone
status_flag_of_surface_carbon_dioxide_mole_flux
30min meannone
status_flag_of_surface_upward_latent_heat_flux
30min meannone
status_flag_of_surface_upward_sensible_heat_flux
30min meannone
surface_altitude
not filledm
surface_carbon_dioxide_mole_flux
30min meanmmol m-2 s-1
surface_upward_latent_heat_flux
30min meanW m-2
surface_upward_sensible_heat_flux
30min meanW m-2
target_land_use_contribution
30min mean0.01
upward_air_velocity (variance)
30min meanm2 s-2
variance_of_absolute_humidity
30min meang2 m-6
variance_of_sonic_temperature
30min meandegC2
wind_from_direction
30min meandegree
wind_speed
30min meanm s-1
x_wind (variance)
30min meanm2 s-2
y_wind (variance)
30min meanm2 s-2
Contact typePersonORCIDInstitute
Originator
Rafael Eigenmann
-
University of Bayreuth
Originator
Thomas Foken
-
University of Bayreuth
Originator
Norbert Kalthoff
-
Karlsruher Institut für Technologie

Parent

cops_nebt: contains data from Energy Balance and TurbulenceNetwork during COPS Campaign
Details

Parent project(s)

Convective and Orographically-induced Precipitation Study