Abstract: This data set contains time series of air pressure, precipitation sum, wind speed, wind direction, air temperature, and relative humidiy, measured at the synoptic Lindenberg weather station (10393) during the Field Experiment on Sub-mesoscale Spatio-Temporal Variability in Lindenberg (FESSTVaL) from May to August 2021. The Lindenberg Meteorological Observatory – Richard-Aßmann-Observatory supersite is operated by the German national meteorological service (Deutscher Wetterdienst, DWD). Data are level-1 data as 10-minute averages (sums) based on 1 Hz sampling organized in daily files. This data set further contains time series of the downward surface radiation flux densities (short-/longwave irradiance) measured at the radiation platform in Lindenberg during FESSTVaL from May to August 2021. Data are level-1 data as 1-minute averages based on 1 Hz sampling organized in daily files.

TableOfContents:

Basic Meteorological Data: rainfall amount; rainfall amount quality flag; air pressure; air pressure quality flag; air temperature; air temperature quality flag; relative humidity; relative humidity quality flag; wind speed; wind speed quality flag; wind from direction; wind from direction quality flag
Radiation Data: global irradiance at the surface; global irradiance at the surface standard deviation; global irradiance at the surface quality flag; diffuse irradiance at the surface; diffuse irradiance at the surface standard deviation; diffuse irradiance at the surface quality flag; direct irradiance at the surface; direct irradiance at the surface standard deviation; direct irradiance at the surface quality flag; long-wave irradiance at the surface; long-wave irradiance at the surface standard deviation; long-wave irradiance at the surface quality flag; solar zenith angle

Technical Info:

Basic Meteorological Data: dimension: 144 x 1; temporalExtent_startDate: 2021-05-01 00:00:00; temporalExtent_endDate: 2021-08-31 23:59:59; temporalResolution: 10; temporalResolutionUnit: minutes; spatialResolution: none; spatialResolutionUnit: none; horizontalResolutionXdirection: none; horizontalResolutionXdirectionUnit: none; horizontalResolutionYdirection: none; horizontalResolutionYdirectionUnit: none; verticalResolution: none; verticalResolutionUnit: meters; horizontalStart: 0; horizontalStartUnit: meters; horizontalEnd: 0; horizontalEndUnit: meters; instrumentNames: rain[e] H3, PTB220, LTS2000,  EE33 DWD, 2D-ultrasonic anemometer, LAM630; instrumentType: weighing tipping bucket, capacitive digital barometer, platinum resistance thermometer, heated capacitive hygrometer, 2D-ultrasonic anemometer, sensor shield; instrumentLocation: all Lindenberg synoptic weather station; instrumentProvider: Lambrecht GmbH, Vaisala Oy, Vaisala Oy, e+e Elektronik GmbH, Thies GmbH, Eigenbrodt GmbH
Radiation Data: dimension: 1440 x 1; temporalExtent_startDate: 2021-05-01 00:00:00; temporalExtent_endDate: 2021-08-31 23:59:59; temporalResolution: 1; temporalResolutionUnit: minutes; spatialResolution: none; spatialResolutionUnit: none; horizontalResolutionXdirection: none; horizontalResolutionXdirectionUnit: none; horizontalResolutionYdirection: none; horizontalResolutionYdirectionUnit: none; verticalResolution: none; verticalResolutionUnit: meters; horizontalStart: 0; horizontalStartUnit: meters; horizontalEnd: 0; horizontalEndUnit: meters; instrumentNames: CMP22, CMP22, CH1, CGR4; instrumentType: ventilated and heated pyranometer, shaded ventilated and heated pyranometer on solar tracker, ventilated pyrheliometer on solar tracker, shaded ventilated and heated pyrgeometer on solar tracker; instrumentLocation: all Lindenberg radiation platform; instrumentProvider: all Kipp&Zonen B.V.

Methods:

Basic Meteorological Data: Data undergo standard quality checks implemented in the DWD synoptic station network. This includes range tests, plausibility tests with respect to neighbouring stations and to temporal changes. For temperature, a second sensor is operated for comparison. Each measured value is accompanied by a quality flag where 0 = data value missing, 1 = good quality, 2 = interpolated or gap-filled by data from an alternative sensor, 3 = dubious quality, 4 = bad quality, 9 = no quality information available. The wind measurements are performed at the top of a hill at the observatory site, the measurement place is surrounded by forest edges at distances of a few decametres to about 100 metres except for winds from SSW to NW, they cannot be considered as representative.
Radiation Data: Radiation flux sensors are operated in ventilated shields. The uncertainty in the observational period (given as 95 % confidence intervals) is estimated from internal comparisons at ± 4.5 W/m2 (or 2.5 %), ± 5 W/m2 (or 1.5 %), and ± 6.5 W/m2 (or 2 %) for the diffuse, global and direct component, respectively. The longwave uncertainty is less than ± 5 W/m2. In situ calibrations were frequently conducted during the observational period using reference sensors directly traceable to the World Radiometric Reference (WRR) and the World Infrared Standard Group (WISG) for shortwave and longwave radiation, respectively. Quality control follows the recommendations of the WMO baseline surface radiation network (BSRN). It includes absolute value range tests and inter-comparison versus a second independent radiation flux measurement at the same site. The temperature of the emitting sensor surface of the pyrgeometer is checked for plausibility vs. ambient air temperature. Standard deviations are given for all variables listed below. Each measured value is accompanied by a quality flag where 0 = valid, 2 = invalid, 5 = value between extremely rare limits and physically possible limits, 6 = value out of physically possible limits, 9 = value missing.

Units: (see TableOfContents)

Basic Meteorological Data: kg m-2;1;pa;1;K;1;1;1;m s-1;1;degrees;1
Radiation Data: W m-2;W m-2;1;W m-2;W m-2;1;W m-2;W m-2;1;W m-2;W m-2;1;degrees

geoLocations:

BoundingBox:  westBoundLongitude: 14.118 degrees East; eastBoundLongitude: 14.1220 degrees East; southBoundLatidude: 52.208 degrees North; northBoundLatitude: 52.209 degrees North; geoLocationPlace: Germany, UTM zone 33U
Locations:

    Basic meteorological data: 52.118 °N, 14.120 °E, 98 m to 125 m above mean sea level, 1 m to 10.4 m above ground
    Radiation data: 52.208 °N, 14.122 °E, 125 m above mean sea level, 1.7 m to 1.9 m above ground

Size: Data (level 1 only) are packed into two compressed tar-archives. Their sizes are 0.9 Mbyte for the basic meteorological data and 3.9Mbyte for the radiation data.

Format: netCDF

DataSources: Single site ground-based instrument measurements, see "Technical Info" for instruments

Contact: claudia.becker (at) dwd.de; stefan.wacker (at) dwd.de

Web page: https://www.cen.uni-hamburg.de/en/icdc/data/atmosphere/samd-st-datasets/samd-st-fesstval.html

see also: https://www.cen.uni-hamburg.de/en/icdc/research/samd/observational-data/short-term-observations/fesstval.html

FESSTVaL is funded by the Deutscher Wetterdienst within the Hans-Ertel Centre for Weather Research.