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Field Data from Expeditions of the Meteorological Institute, University of Hamburg

B. Brümmer, G. Müller, C. Wetzel

Access

UNRESTRICTED

Get data from ICDC's ftp server:

ftp://ftp-icdc.cen.uni-hamburg.de/mi_feldexperimente/

Free for scientific use via WDCC's CERA database:

Get data of project UNI_HH_MI_fielddata from CERA

RESTRICTED only accessable in ZMAW network or via CliSAP login What does that mean?

Data access via file system: /data/icdc/atmosphere/mi_feldexperimente

 

Description

The Physical Meteorology Division of the Meteorological Institute is regularly conducting or taking part in field experiments with strong focus on high latitudes. Measurements are performed by aircraft, buoys or radiosondes, and at land, ship and ice stations.

Published data sets incorporate aircraft measurements of turbulent fluxes and standard meteorological parameters of high temporal and spatial resolution. These measurements are supported by frequent radiosonde ascents and station and ship data in the according region. Another group of data sets consists of measurements by autonomous buoys of different complexity on sea ice and ocean.

The datasets are independent (except some radiosonde data), that means the data were not used for operational weather predictions or reanalyses.

 

The field phases of the experiment had durations of one to four weeks. Radiosondes were launched 3- to 6-hourly during these periods. Aircraft data contain up to ten missions per experiment. The lifespan of the autonomous buoys differ from few days to more than one year, depending on ice conditions and battery duration. Details are listed by platform:

Radiosonde:

Radiosondes were launched at stations or along the routes of research vessels. Soundings were mostly made 3-hourly with higher frequencies during interesting synoptic conditions. Gaps are caused by severe weather or port calls of the vessels. The sampling frequency and the vertical resolutions of the soundings depend on the radiosonde models and the applied data processing.

Aircraft:

Single flight missions cover areas of 200 x 200 km and had durations of about two hours. The flight patterns consist of horizontal and vertical (profile) sections. The aircraft speed was 100 ms-1 and the sampling frequency was 100 Hz. The provided data has a temporal resolution of 1 Hz.

Buoys:

Buoy data is provided 1-hourly (CALIB, XAN) and 3-hourly (PAWS). Buoys were deployed in regular arrays with distances up to 100 km. Trajectories of single buoys depend on ice drift and surface ocean currents respectively.

 

Experiments

The following experiments are included:  ACSYS (1998, 2003), ALKOR (2000, 2001), ARKTIS (1988, 1991, 1993),  ASTEX (1992), BASIS (1998, 2001), DAMOCLES (2007, 2008), FGGE (1979),  FRAMZY (1999, 2002, 2007, 2008, 2009), FRONTEX (1989), KONTROL (1984,1985), KONTUR (1981), LOFZY (2005).

Available data sets, sorted by experiment and platform. DSD = Downloadlink for Data Set Description in pdf format. CERA = link to released data sets in WDCC's CERA DB. FTP = link to ftp download from ICDC
Exp.No.Data set nameData set informationDSDCERAICDC
23FRAMZY2009_calib_buoyposition, temperature and pressure data of 6 autonomous drifting ice buoys, 02/10/2009-18/02/2010, Fram StraitDSDCERAFTP
22FRAMZY2008_calib_buoyposition, temperature and pressure data of 6 autonomous drifting ice buoys, 20/01-28/02/2008, Fram StraitDSDCERAFTP
21DAMOCLES2008_paws_buoyposition, temperature, pressure and wind data of 9 autonomous drifting ice buoys, 14/04/2008-22/02/2011, Arctic OceanDSDCERAFTP
20DAMOCLES2007_calib_buoyposition, temperature and pressure data of 16 autonomous drifting ice buoys, 23/04/2007-31/01/2008, Arctic OceanDSDCERAFTP
19FRAMZY2007_falconmeasurements of the research aircraft Falcon, 8 missions, 01-15/03/2007, Fram StraitDSDCERAFTP
 FRAMZY2007_calib_buoyposition, temperature and pressure data of 16 autonomous drifting ice buoys, 01/03-09/06/2007, Fram StraitDSDCERAFTP
 FRAMZY2007_xan_buoyposition, air temperature, water temperature and pressure data of 13 autonomous drifting water buoys, 01/03-26/06/2007, Fram StraitDSDCERAFTP
18LOFZY2005_falconmeasurements of the research aircraft Falcon, 8 missions, 04-21/03/2005, Norwegian SeaDSDCERAFTP
 LOFZY2005_celtic_rs3-hourly radiosoundings, launched onboard RV Celtic Explorer, 158 soundings, 26/02-19/03/2005, Norwegian SeaDSDCERAFTP
 LOFZY2005_xan_buoyposition, temperature and pressure data of 23 autonomous drifting water buoys, 26/02-19/03/2005, Norwegian SeaDSDCERAFTP
17ACSYS2003_falconmeasurements of the research aircraft Falcon, 8 missions, 04-15/04/2003, Fram StraitDSDCERAFTP
 ACSYS2003_polarstern_rs3-hourly radiosoundings, launched onboard RV Polarstern, 138 soundings, 30/03-21/04/2003, Fram StraitDSDCERAFTP
 ACSYS2003_aranda_rs3-hourly radiosoundings, launched onboard RV Aranda, 159 soundings, 30/03-21/04/2003, Fram StraitDSDCERAFTP
 ACSYS2003_calib_buoyposition, temperature and pressure data of 10 autonomous drifting ice buoys, 27/03-19/07/2003, Fram StraitDSDCERAFTP
 ACSYS2003_ibeacon_buoyposition, temperature and pressure data of one autonomous drifting ice buoy, 04/04-31/07/2003, Fram StraitDSDCERAFTP
16FRAMZY2002_falconmeasurements of the research aircraft Falcon, 8 missions, 05-21/03/2002, Fram StraitDSDCERAFTP
 FRAMZY2002_aranda_rs3-hourly radiosoundings, launched onboard RV Aranda, 136 soundings, 136 Profile, 04-23/03/2002, Fram StraitDSDCERAFTP
 FRAMZY2002_calib_buoyposition, temperature and pressure data of 14 autonomous drifting ice buoys, 27/02-22/05/2002, Fram StraitDSDCERAFTP
 FRAMZY2002_ibeacon_buoyposition, temperature and pressure data of one autonomous drifting ice buoy, 08-15/03/2002, Fram StraitDSDCERAFTP
15BASIS2001_do128measurements of the research aircraft DO 128, 10 missions, 14-22/02/2001, Baltic SeaDSDCERAFTP
 BASIS2001_aranda_rs3-hourly radiosoundings, launched onboard RV Aranda, 37 soundings, 13-23/02/2001, Baltic SeaDSDCERAFTP
 BASIS2001_ibeacon_buoyposition, temperature, pressure and wind data of 2 autonomous buoys, 14-22/02/2001, Baltic SeaDSDCERAFTP
14ALKOR2001_alkor_rs3-hourly radiosoundings, launched onboard RV Alkor, 109 soundings, 03/04-05/11/2001, Baltic SeaDSDCERAFTP
13ALKOR2000_alkor_rs3-hourly radiosoundings, launched onboard RV Alkor, 58 soundings, 05/04- 29/10/2000, Baltic SeaDSDCERAFTP
12FRAMZY1999_falconmeasurements of the research aircraft Falcon, 5 missions, 10-19/04/1999, Fram StraitDSDCERAFTP
 FRAMZY1999_valdivia_rs3-hourly radiosoundings, launched onboard RV Valdivia, 58 soundings, 08-24/04/1999, Fram StraitDSDCERAFTP
 FRAMZY1999_calib_buoyposition, temperature and pressure data of 15 autonomous drifting ice buoys, 03-30/04/1999, Fram StraitDSDCERAFTP
11ACSYS1998_falconmeasurements of the research aircraft Falcon, 6 missions, 11-21/03/1998, Fram StraitDSDCERAFTP
10BASIS1998_falconmeasurements of the research aircraft Falcon, 6 missions, 27/02-06/03/1998, Baltic SeaDSDCERAFTP
 BASIS1998_aranda_rs6-hourly radiosoundings, launched onboard RV Aranda, 70 soundings, 17/02-06/03/1998, Baltic SeaDSDCERAFTP
 BASIS1998_kokkola_rs6-hourly radiosoundings, launched at the station Kokkola, 75 soundings, 75 Profile, 17/02-06/03/1998, Baltic SeaDSDCERAFTP
 BASIS1998_merikarvia_rs6-hourly radiosoundings, launched at the station Merikarvia, 68 soundings, 18/02-06/03/1998, Baltic SeaDSDCERAFTP
 BASIS1998_umea_rs6-hourly radiosoundings, launched at the station Umea, 66 soundings, 17/02-06/03/1998, Baltic SeaDSDCERAFTP
9ARKTIS1993_bearisland_rs6-hourly radiosoundings, launched at the meteorological station Bear Island, 97 soundings, 01-25/03/1993DSDCERAFTP
 ARKTIS1993_danmarkshavn_rs6-hourly radiosoundings, launched at the meteorological station Danmarkshavn (Greenland), 87 soundings, 28/02-24/03/1993DSDCERAFTP
 ARKTIS1993_janmayen_rs12-hourly radiosoundings, launched at the meteorological station Jan Mayen, 48 soundings, 01-24/03/1993DSDCERAFTP
 ARKTIS1993_multanovsky_rs6-hourly radiosoundings, launched onboard RV Prof. Multanovsky 82 soundings, 02-22/03/1993, Fram StraitDSDCERAFTP
 ARKTIS1993_nyalesund_rs6-hourly radiosoundings, launched at the meteorological station Ny Alesund (Spitsbergen), 85 soundings, 28/02-25/03/1993DSDCERAFTP
 ARKTIS1993_polarstern_rs6-hourly radiosoundings, launched onboard RV Polarstern, 86 soundings, 27/02-25/03/1993, Fram StraitDSDCERAFTP
 ARKTIS1993_valdivia_rs6-hourly radiosoundings, launched onboard RV Valdivia, 120 soundings, 28/02-27/03/1993, Fram StraitDSDCERAFTP
8ASTEX1992_valdivia_rs3-hourly radiosoundings, launched onboard RV Valdivia, 156 soundings, 28/05-21/06/1992, Atlantic OceanDSDCERAFTP
7ARKTIS1991_bearisland_rs6-hourly radiosoundings, launched at the meteorological station Bear Island, 106 soundings, 17/02-15/03/1991DSDCERAFTP
 ARKTIS1991_valdivia_rs6-hourly radiosoundings, launched onboard RV Valdivia, 127 soundings, 21/02-14/03/1991, Norwegian SeaDSDCERAFTP
6FRONTEX1989_valdivia_rs3-hourly radiosoundings, launched onboard RV Valdivia, 52 soundings, 16-29/05/1989, North SeaDSDCERAFTP
5ARKTIS1988_valdivia_rs6-hourly radiosoundings, launched onboard RV Valdivia, 54 soundings, 06-14/05/1988, Fram StraitDSDCERAFTP
4KONTROL1985_valdivia_rs3-hourly radiosoundings, launched onboard RV Valdivia, 123 soundings, 02-18/10/1985, North SeaDSDCERAFTP
3KONTROL1984_valdivia_rs3-hourly radiosoundings, launched onboard RV Valdivia, 119 soundings, 06-23/08/1984, North SeaDSDCERAFTP
2KONTUR1981_meteor_rs6-hourly radiosoundings, launched onboard RV Meteor, 168 soundings, 16/09-19/10/1981, North SeaDSDCERAFTP
1FGGE1979_meteor_rs12-hourly radiosoundings, launched onboard RV Meteor, 291 soundings, 15/01-04/07/1979, Atlantic OceanDSDCERAFTP

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Parameters

System Name Unit
Radiosonde Height m
Radiosonde Air pressure hPa
Radiosonde Air temperature °C
Radiosonde Relative humidity %
Radiosonde Dew point temperature °C
Radiosonde Specific humidity g kg-1
Radiosonde Wind from direction Grad
Radiosonde Wind speed m s-1
Aircraft Latitude °Nord
Aircraft Longitude °Ost
Aircraft Height m
Aircraft Air temperature °C
Aircraft Surface temperatur °C
Aircraft Humidity mixing ratio g kg-1
Aircraft Eastward wind m s-1
Aircraft Northward wind m s-1
Aircraft Upward air velocity m s-1
Aircraft Wind from direction Grad
Aircraft Wind speed m s-1
Aircraft Air pressure at sea level hPa
Aircraft Air pressure hPa
Aircraft Downwelling shortwave flux in air W m-2
Aircraft Downwelling longwave flux in air W m-2
Aircraft Upwelling shortwave flux in air W m-2
Aircraft Upwelling longwave flux in air W m-2
Aircraft Θ'w' upward sensible heat flux W m-2
Aircraft q'w' upward latent heat flux W m-2
Aircraft u'w' downward eastward momentum flux in air N m-2
Aircraft v'w' downward northward momentum flux in air N m-2
Buoy (all types) Latitude °Nord
Buoy (all types) Longitude °Ost
Buoy (all types) Air temperature °C
Buoy (all types) Air pressure at sea level hPa
Water buoys, Type XAN Water temperature °C
Ice buoys, Type PAWS und IBEACON Relative Humidity %
Ice buoys, Type PAWS und IBEACON Wind from direction Grad
Ice buoys, Type PAWS und IBEACON Wind speed m s-1

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Coverage, spatial and temporal resolution

Period and temporal resolution:

  • 1979 to 2009
  • irregular temporal resolution, depends on measurement campaign and sensor

Coverage and spatial resolution:

  • North Atlantic and Arctic, irregular coverage (see figures above)
  • Spatial resolution: irregular, along buoy, ship and airplane tracks, depends on measurement campaign and sensor
  • Geographic longitude: -10°E to 40°E (rawinsonde); -20°E to 30°E (airplane); -180°E bis 180°E (buoy)
  • Geographic latitude: -5°N to 85°N (rawinsonde); 60°N to 85°N (airplane); 60°N to 90°N (buoy)
  • Dimension: irregular, 1- or 2-dimensional, depends on measurement campaign and sensor
  • Altitude: Vertical profiles (rawinsonde); vertical sections (airplane), 0.0 m (buoy)

Format:

  • ASCII and NetCDF

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Data quality

All datasets contain usable data, as utilized by project participants. The data are checked for out of range values and data gaps. In some cases processing like interpolation or averaging was applied. Details are given in documentation provided with each dataset.

Some datasets additionally provide unprocessed raw data.


 

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Contact

At Meteorological Institute:

 

Name: Gerd Müller

Institute: Meteorological Institute, University of Hamburg

Email: gerd.mueller (at) uni-hamburg.de

Phone: +49 40 42838 5086

 

 

At ICDC:

Name: Annika Jahnke-Bornemann

Institute: ICDC, CEN, Universität Hamburg

E-Mail: annika.jahnke-bornemann (at) uni-hamburg.de

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References

Detailed documentation of each dataset is contained in the “Additional Info” document (pdf format) available on the CERA-DB. These documents also provide extensive references.

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Data citation

Examples how to cite the datasets are presented on the CERA website. For example:

Brümmer, B., G. Müller, C. Wetzel 2011; FRAMZY 2009 - Drift buoys experiment. World Data Center for Climate. CERA-DB "UNI_HH_MI_FRAMZY2009" http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=UNI_HH_MI_FRAMZY2009

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