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Hamburg Boundary Layer Measurement Tower

Access

UNRESTRICTED

This data set is only available for a restricted user group, please contact us if you want to access these data.

RESTRICTED only accessable in CEN/MPI net or via CliSAP login  What does that mean?

Datenzugriff via Filesystem: /data/icdc/atmosphere/weathermast_hamburg

Note that we only offer a subset of the data (see Parameters further down). A more complete list of measured and calculated parameters from the Hamburg weather mast can be found here.

 

Description

Since 1967 the Meteorological Institute of the University of Hamburg operates a scientific, meteorological measuring site in Billwerder, a suburb of Hamburg, Germany. It is located on an area of the NDR (the North German Broadcasting Company, 53° 31′ 09.0″ N, 10° 06′ 10.3″ E) and consists of devices mounted at a 300 m tall broadcasting mast and a smaller 10 m tall mast owned by the MI nearby on a meadow. Additionally, several ground-based devices are installed outside the operator's hut beneath the tall mast. In 1994 completely new equipment was installed, and since 1995 measurements run almost continuously until today (data availability table (pdf, German)).

At the 300 m mast wind speed and direction, air temperature and humidity have been measured by several devices at altitudes of 10, 50, (70) 110, 175 and 250 m (since 2010 also 280 m) allowing atmospheric boundary layer studies. A list of measured and calculated values is given here (pdf, German). You get a detailed description about the data here (pdf, German).

Most of the sensors sample data every minute. We do not offer these original data. Available via ICDC are hourly and daily mean values. If you require data at finer temporal resolution please contact Ingo Lange or Felix Ament. You can learn more about the Hamburg weather mast and take a glimpse at the actually measured values if you click here.

Since 2015 you can get even more information via Wetternetz Hamburg(Facebook). Here you are informed about the Hamburg boundary layer measurement tower, the PATTERN rain radar and a measurement network for city climatology HUSCO.

Last update of data set at ICDC: May 30, 2019.

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Parameters

Abbrev. Name Unit since Year
P002 air pressure [2m] hPa 1995
TT... air temperature [2m, 10m, 50m, 70m, 110m, 175m, 250m,280m] °C 1995
RH... relative humidity [2m, 10m, 50m, 110m, 175m, 250m (280m)] % 2004
DT... dew point (calculated) [2m, 10m, 50m, 110m, 175m, 250m, 280m] °C 2004
TS surface temperature °C 1997
L incident longwave radiation [10m] W/m² 1995
G global solar radiation (incident short-wave radiation) [10m] W/m² 1995
GSM sunshine duration min 1996
GTM duration of no sunshine min 1996
GXM theoretical sunshine duration min 1995
RR precipitation amount per time unit mm 1997
RDM duration of precipitation min 2006
RTM duration of no precipitation min 2006
FF wind speed [10m, 50m, 110m, 175m, 250m (280m)] m/s 2000
FB maximum gust [10m, 50m, 110m, 175m, 250m (280m)] m/s 2004
FU U-component of wind vector m/s 2000
FV V-component of wind vector m/s 2000
DD wind direction [10m, 50m, 110m, 175m, 250m (280m)] ° 2000
local albedo: 0,210  
local emissitivity: 0,984

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Coverage, spatial and temporal resolution

Period and temporal resolution:

  • Since year in table above to 12/2018
  • Hourly, daily

Coverage and soatial resolution:

  • Local, Hamburg-Billwerder
  • Spatial resolution: none, vertical profiles
  • Geographic longitude: 10° 06′ 10.3″ E
  • Geographic latitude: 53° 31′ 09.0″ N
  • Dimension: 1 column x 1 row x number of measurements vertically
  • Altitudes (location itself is 0.3 m a.s.l.) 2 m, 10 m, 50 m, 70 m, 110 m, 175 m, 250 m, and 280 m

Format:

  • ASCII

You can find detailed information about which parameter is available at which altitude here. This document also informs about sensors used and when major changes in sensor equipment have taken place.

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Data quality

The data set does not contain uncertainty estimates. The majority of the data are direct measurements anyways so that the accuracy of the sensors is more important in this context. The following list gives some information about the sensor accuracies:

  • Temperature: Pt100-Platinum wire resistance thermometer, 0.1 K
  • Relative humidity: Capacitive humidity sensor Vaisala HMP-45, 2-3 %
  • Wind/Turbulence: 3D-Ultrasonic anemometer/-thermometer METEK USA-1, 0.1 m/s
  • Air pressure: Pressure sensor Vaisala PTB-200A, 0.1 hPa
  • Precipitation amount: Tipping bucket principle, 0.1 mm
  • Precipitation duration: IR-light barrier drop counter IRSS-88, 5 drops / minute
  • Incident short-wave radiation: Pyranometer Kipp+Zonen CMP21, 3 W/m²
  • Incident long-wave radiation(bis Sep. 2013 Eppley, danach K+Z CGR4),3 W/m²
  • Surface temperature: IR-Radiometer Heitronics KT-19, about 1 K

Please contact Ingo Lange for more details.

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Contact

Felix Ament
Meteorological Institute, University of Hamburg
email: felix.ament (at) uni-hamburg.de
phone: +49-40-41173 277

Ingo Lange
Meteorological Institute, University of Hamburg
email: ingo.lange (at) uni-hamburg.de
phone: +49-40-42838 7810

Stefan Kern
ICDC / CEN / University of Hamburg
email: stefan.kern (at) uni-hamburg.de
phone: +49-40-42838-2415

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References

  • Homepage Hamburg Weather Mast
  • Brümmer, B., I. Lange, and H. Konow, 2012: Atmospheric boundary layer measurements at the 280 m high Hamburg weather mast 1995-2011: mean annual and diurnal cycles. Meteorologische Zeitschrift, 21, 319-335, doi: 10.1127/0941-2948/2012/0338.

Data citation

In case you use this data for a presentation, a study, a thesis or a scientific article please contact Ingo Lange or Felix Ament for correct citation.

Lange, I., 2014, updated May 16, 2019: Wind- und Temperaturdaten vom Wettermast Hamburg des Meteorologischen Instituts der Universität Hamburg für den Zeitraum 2010 bis 2018, data obtained from ICDC, University of Hamburg, http://icdc.cen.uni-hamburg.de/weathermast_hamburg/

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