cops_nebt_ubt1etg_flux_d: Eddy-covariance turbulence data of the energy balance network (NEBT) operating during COPS 2007: station UBT1ETG (Fussbach I)

Eigenmann, Rafael; Foken, Thomas

cops_nebt_ubt1etg_flux_d: Eddy-covariance turbulence data of the energy balance network (NEBT) operating during COPS 2007: station UBT1ETG (Fussbach I)

hdl:21.14106/2e77b2d48876e0efe7792d14a1b57712df0988b4

Eigenmann, Rafael; Foken, Thomas

Dataset

Summary: The energy balance station UBT1ETG near Fussbach measured high-frequency (20 Hz) eddy-covariance raw data with a CSAT3 (Campbell Scientific, Inc.) sonic anemometer and a LI-7500 (LI-COR Biosciences) hygrometer above the target land use type corn. 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 (see entry cops_nebt_ubt1etg_info_1). 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 supplementary pdf-file (see cops_nebt_ubt1etg_info_1).
Project: COPS (Convective and Orographically-induced Precipitation Study)
Location(s): Black Forest, Kinzig Valley, Fussbach (ubt1etg_flux), Germany
Additional Information: cops_nebt_ubt_info_2: pdf-file with information on quality control performed by Uni Bayreuth
uni_hohenheim_data_policy.txt
cops_nebt_ubt_info_1: pdf-file with manual of software package TK2 provided by Uni Bayreuth
cops_nebt_ubt4etg_info_1: pdf-file with foot print climatology at station UBT4ETG (Hagenbuch)
cops_nebt_ubt1etg_info_1: pdf-file with foot print climatology at station UBT1ETG (Fussbach I)
cops_nebt_imk3etg_info_1: pdf-file with foot print climatology at station IMK3ETG (Linkenheim)
cops_nebt__ubt3etg_info_1: pdf-file with foot print climatology at station UBT3ETG (Fischerbach)
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_imk8t_info_1: pdf-file with foot print climatology at station IMK8T (Burnhaupt le Bas)
cops_nebt_imk2etg_info_1: pdf-file with foot print climatology at station IMK2ETG (Baden Airpark)
cops_nebt_mf1etg_info_1: pdf-file with foot print climatology at station MF1ETG (Niederrott)
cops_nebt_imk1etg_info_1: pdf-file with foot print climatology at station IMK1ETG (Hornisgrinde)
cops_nebt_imk5t_info_1: pdf-file with foot print climatology at station IMK5T (Oberkirch)
cops_nebt_mf2etg_info_1: pdf-file with foot print climatology at station MF2ETG (Nordfeld)
cops_nebt_imk6t_info_1: pdf-file with foot print climatology at station IMK6T (Bad Rotenfels)
cops_nebt_ubt2t_info_1: pdf-file with foot print climatology at station UBT2T (Fussbach II)
cops_nebt_ubn1etg_info_1: pdf-file with foot print climatology at station UBN1ETG (Deckenpfronn)
Spatial Coverage: Longitude 8.02 Latitude 48.37 Altitude: 178 m relativ to NN
Temporal Coverage: 2007-06-01 to 2007-08-31 (calendrical)
Use constraints: For scientific use only. No commercial use allowed. Please be aware of the common COPS/GOP/D-PHASE data policy (http://cops.wdc-climate.de/)
Data Catalog: World Data Center for Climate
Access constraints: Authorized Persons
Size: 2.11 MiB (2213888 Byte)
Format: NetCDF
Status: completely archived
Creation Date: 2008-11-07
Download Permission: Please login to check permission and download options

Cite as: [ Derived from parent entry - See data hierarchy tab ]
Eigenmann, Rafael; Foken, Thomas (2012). cops_nebt_ubt_flux: Eddy-covariance turbulence data from COPS energy balance and turbulence network stations run by University of Bayreuth during COPS 2007. World Data Center for Climate (WDCC) at DKRZ. https://doi.org/10.1594/WDCC/cops_nebt_ubt_flux

BibTeX RIS

Accuracy report

To determine the accuracy of flux measurements, the sonic anemometer sensor type, as well as the classification of the turbulent flux data according t...

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 CSAT3 sonic anemometer was classified as type A for the best data quality. 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 A (CSAT3):
For quality flags ranging from 1 to 3:
Accuracy of sensible heat flux: 5 % or 10 Wm-2
Accuracy of latent heat flux: 10 % or 20 Wm-2

For quality flags ranging from 4 to 6:
Accuracy of sensible heat flux: 10 % or 20 Wm-2
Accuracy of latent heat flux: 15 % or 30 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., Gockede, 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.

Completeness report

The data availability of the turbulent flux data of the continuously running eddy-covariance measuring set-up at Fussbach (UBT1ETG) amounts to 90.1% o...

Description: The data availability of the turbulent flux data of the continuously running eddy-covariance measuring set-up at Fussbach (UBT1ETG) amounts to 90.1% of the total 4416 processed half-hourly measurements of the 92 days of the COPS period. Data failure (9.9%) occurred due to measuring device failures or problems with the transmission system. A gap-filling procedure was not applied.

Variable	Aggregation	Unit
absolute_humidity	30min mean	g m-3
atmospheric_stability_parameter_in_surface_layer	30min mean	1
canopy_heightCF	30min mean	m
fetch_length	30min mean	m
friction_velocity	30min mean	m s-1
internal_boundary_layer_thickness	30min mean	m
latitudeCF	not filled	degree_north
longitudeCF	not filled	degree_east
mole_concentration_of_carbon_dioxide_in_airCF	30min mean	mmol m-3
mole_concentration_of_carbon_dioxide_in_air (variance)CF	30min mean	mmol2 m-6
sensor_height_above_ground	30min mean	m
sonic_temperature	30min mean	degC
status_flag_of_friction_velocity	30min mean	none
status_flag_of_internal_boundary_layer_thickness	30min mean	none
status_flag_of_surface_carbon_dioxide_mole_flux	30min mean	none
status_flag_of_surface_upward_latent_heat_flux	30min mean	none
status_flag_of_surface_upward_sensible_heat_flux	30min mean	none
surface_altitudeCF	not filled	m
surface_carbon_dioxide_mole_fluxCF	30min mean	mmol m-2 s-1
surface_upward_latent_heat_fluxCF	30min mean	W m-2
surface_upward_sensible_heat_fluxCF	30min mean	W m-2
target_land_use_contribution	30min mean	0.01
upward_air_velocity (variance)CF	30min mean	m2 s-2
variance_of_absolute_humidity	30min mean	g2 m-6
variance_of_sonic_temperature	30min mean	degC2
wind_from_directionCF	30min mean	degree
wind_speedCF	30min mean	m s-1
x_wind (variance)CF	30min mean	m2 s-2
y_wind (variance)CF	30min mean	m2 s-2

Contact type	Person	ORCID	Organization
Investigator	Rafael Eigenmann	-	University of Bayreuth
Originator	Thomas Foken	-	University of Bayreuth

Parent

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

Details

Parent project(s)

Convective and Orographically-induced Precipitation Study

[Entry acronym: cops_nebt_ubt1etg_flux_d] [Entry id: 2188379]