Field Data from Expeditions of the Meteorological Institute UHH

Topics

• Access
• Description
• Parameters
• Coverage, spatial and temporal resolution
• Data quality
• Contact person
• References
• Data citation

Access

UNRESTRICTED:

• Get MI field experiment data via FTP

RESTRICTED:This link to the data set is only available for a restricted user group.  The data set is only accessible in CEN/MPI net or accessible from external nets with a customer account.  Please contact ICDC if you would like to access this data from outside the network.

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

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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, not barrier-free. FR = Downloadlink for Field Report in pdf-Format, not barrier-free. CERA = link to released data sets in WDCC's CERA DB. FTP = link to ftp download from ICDC

Exp.No.	Data set name	Data set information	DSD/ FR	CERA	ICDC
23	FRAMZY2009_calib_buoy	position, temperature and pressure data of 6 autonomous drifting ice buoys, 02/10/2009-18/02/2010, Fram Strait	-	CERA	FTP
22	FRAMZY2008_calib_buoy	position, temperature and pressure data of 6 autonomous drifting ice buoys, 20/01-28/02/2008, Fram Strait	FR	CERA	FTP
21	DAMOCLES2008_paws_buoy	position, temperature, pressure and wind data of 9 autonomous drifting ice buoys, 14/04/2008-22/02/2011, Arctic Ocean	-	CERA	FTP
20	DAMOCLES2007_calib_buoy	position, temperature and pressure data of 16 autonomous drifting ice buoys, 23/04/2007-31/01/2008, Arctic Ocean	DSD	CERA	FTP
19	FRAMZY2007_falcon	measurements of the research aircraft Falcon, 8 missions, 01-15/03/2007, Fram Strait	FR	CERA	FTP
	FRAMZY2007_calib_buoy	position, temperature and pressure data of 16 autonomous drifting ice buoys, 01/03-09/06/2007, Fram Strait	-	CERA	FTP
	FRAMZY2007_xan_buoy	position, air temperature, water temperature and pressure data of 13 autonomous drifting water buoys, 01/03-26/06/2007, Fram Strait	-	CERA	FTP
18	LOFZY2005_falcon	measurements of the research aircraft Falcon, 8 missions, 04-21/03/2005, Norwegian Sea	-	CERA	FTP
	LOFZY2005_celtic_rs	3-hourly radiosoundings, launched onboard RV Celtic Explorer, 158 soundings, 26/02-19/03/2005, Norwegian Sea	DSD	CERA	FTP
	LOFZY2005_xan_buoy	position, temperature and pressure data of 23 autonomous drifting water buoys, 26/02-19/03/2005, Norwegian Sea	-	CERA	FTP
17	ACSYS2003_falcon	measurements of the research aircraft Falcon, 8 missions, 04-15/04/2003, Fram Strait	FR	CERA	FTP
	ACSYS2003_polarstern_rs	3-hourly radiosoundings, launched onboard RV Polarstern, 138 soundings, 30/03-21/04/2003, Fram Strait	DSD	CERA	FTP
	ACSYS2003_aranda_rs	3-hourly radiosoundings, launched onboard RV Aranda, 159 soundings, 30/03-21/04/2003, Fram Strait	DSD	CERA	FTP
	ACSYS2003_calib_buoy	position, temperature and pressure data of 10 autonomous drifting ice buoys, 27/03-19/07/2003, Fram Strait	-	CERA	FTP
	ACSYS2003_ibeacon_buoy	position, temperature and pressure data of one autonomous drifting ice buoy, 04/04-31/07/2003, Fram Strait	-	CERA	FTP
16	FRAMZY2002_falcon	measurements of the research aircraft Falcon, 8 missions, 05-21/03/2002, Fram Strait	FR	CERA	FTP
	FRAMZY2002_aranda_rs	3-hourly radiosoundings, launched onboard RV Aranda, 136 soundings, 136 Profile, 04-23/03/2002, Fram Strait	DSD	CERA	FTP
	FRAMZY2002_calib_buoy	position, temperature and pressure data of 14 autonomous drifting ice buoys, 27/02-22/05/2002, Fram Strait	-	CERA	FTP
	FRAMZY2002_ibeacon_buoy	position, temperature and pressure data of one autonomous drifting ice buoy, 08-15/03/2002, Fram Strait	-	CERA	FTP
15	BASIS2001_do128	measurements of the research aircraft DO 128, 10 missions, 14-22/02/2001, Baltic Sea	FR	-	-
	BASIS2001_aranda_rs	3-hourly radiosoundings, launched onboard RV Aranda, 37 soundings, 13-23/02/2001, Baltic Sea	DSD	CERA	FTP
	BASIS2001_ibeacon_buoy	position, temperature, pressure and wind data of 2 autonomous buoys, 14-22/02/2001, Baltic Sea	-	CERA	FTP
14	ALKOR2001_alkor_rs	3-hourly radiosoundings, launched onboard RV Alkor, 109 soundings, 03/04-05/11/2001, Baltic Sea	DSD , FR	CERA	FTP
13	ALKOR2000_alkor_rs	3-hourly radiosoundings, launched onboard RV Alkor, 58 soundings, 05/04- 29/10/2000, Baltic Sea	DSD , FR	CERA	FTP
12	FRAMZY1999_falcon	measurements of the research aircraft Falcon, 5 missions, 10-19/04/1999, Fram Strait	FR	CERA	FTP
	FRAMZY1999_valdivia_rs	3-hourly radiosoundings, launched onboard RV Valdivia, 58 soundings, 08-24/04/1999, Fram Strait	DSD	CERA	FTP
	FRAMZY1999_calib_buoy	position, temperature and pressure data of 15 autonomous drifting ice buoys, 03-30/04/1999, Fram Strait	-	CERA	FTP
11	ACSYS1998_falcon	measurements of the research aircraft Falcon, 6 missions, 11-21/03/1998, Fram Strait	FR	CERA	FTP
10	BASIS1998_falcon	measurements of the research aircraft Falcon, 6 missions, 27/02-06/03/1998, Baltic Sea	FR	CERA	FTP
	BASIS1998_aranda_rs	6-hourly radiosoundings, launched onboard RV Aranda, 70 soundings, 17/02-06/03/1998, Baltic Sea	DSD	CERA	FTP
	BASIS1998_kokkola_rs	6-hourly radiosoundings, launched at the station Kokkola, 75 soundings, 75 Profile, 17/02-06/03/1998, Baltic Sea	DSD	CERA	FTP
	BASIS1998_merikarvia_rs	6-hourly radiosoundings, launched at the station Merikarvia, 68 soundings, 18/02-06/03/1998, Baltic Sea	DSD	CERA	FTP
	BASIS1998_umea_rs	6-hourly radiosoundings, launched at the station Umea, 66 soundings, 17/02-06/03/1998, Baltic Sea	DSD	CERA	FTP
9	ARKTIS1993_bearisland_rs	6-hourly radiosoundings, launched at the meteorological station Bear Island, 97 soundings, 01-25/03/1993	DSD , FR	CERA	FTP
	ARKTIS1993_danmarkshavn_rs	6-hourly radiosoundings, launched at the meteorological station Danmarkshavn (Greenland), 87 soundings, 28/02-24/03/1993	DSD	CERA	FTP
	ARKTIS1993_janmayen_rs	12-hourly radiosoundings, launched at the meteorological station Jan Mayen, 48 soundings, 01-24/03/1993	DSD	CERA	FTP
	ARKTIS1993_multanovsky_rs	6-hourly radiosoundings, launched onboard RV Prof. Multanovsky 82 soundings, 02-22/03/1993, Fram Strait	DSD	CERA	FTP
	ARKTIS1993_nyalesund_rs	6-hourly radiosoundings, launched at the meteorological station Ny Alesund (Spitsbergen), 85 soundings, 28/02-25/03/1993	DSD	CERA	FTP
	ARKTIS1993_polarstern_rs	6-hourly radiosoundings, launched onboard RV Polarstern, 86 soundings, 27/02-25/03/1993, Fram Strait	DSD	CERA	FTP
	ARKTIS1993_valdivia_rs	6-hourly radiosoundings, launched onboard RV Valdivia, 120 soundings, 28/02-27/03/1993, Fram Strait	DSD	CERA	FTP
8	ASTEX1992_valdivia_rs	3-hourly radiosoundings, launched onboard RV Valdivia, 156 soundings, 28/05-21/06/1992, Atlantic Ocean	DSD	CERA	FTP
7	ARKTIS1991_bearisland_rs	6-hourly radiosoundings, launched at the meteorological station Bear Island, 106 soundings, 17/02-15/03/1991	DSD , FR	CERA	FTP
	ARKTIS1991_valdivia_rs	6-hourly radiosoundings, launched onboard RV Valdivia, 127 soundings, 21/02-14/03/1991, Norwegian Sea	DSD	CERA	FTP
6	FRONTEX1989_valdivia_rs	3-hourly radiosoundings, launched onboard RV Valdivia, 52 soundings, 16-29/05/1989, North Sea	DSD	CERA	FTP
5	ARKTIS1988_valdivia_rs	6-hourly radiosoundings, launched onboard RV Valdivia, 54 soundings, 06-14/05/1988, Fram Strait	DSD	CERA	FTP
4	KONTROL1985_valdivia_rs	3-hourly radiosoundings, launched onboard RV Valdivia, 123 soundings, 02-18/10/1985, North Sea	DSD	CERA	FTP
3	KONTROL1984_valdivia_rs	3-hourly radiosoundings, launched onboard RV Valdivia, 119 soundings, 06-23/08/1984, North Sea	DSD	CERA	FTP
2	KONTUR1981_meteor_rs	6-hourly radiosoundings, launched onboard RV Meteor, 168 soundings, 16/09-19/10/1981, North Sea	DSD	CERA	FTP
1	FGGE1979_meteor_rs	12-hourly radiosoundings, launched onboard RV Meteor, 291 soundings, 15/01-04/07/1979, Atlantic Ocean	DSD	CERA	FTP

Last update of data set at ICDC:

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Parameters

Parameters of the MI field experiments data sets

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

Gerd Müller
Meteorological Institute / University of Hamburg
E-Mail: gerd.mueller (at) uni-hamburg.de
Tel: +49 40 42838 5086

Annika Jahnke-Bornemann
ICDC / CEN / University of Hamburg
E-Mail: annika.jahnke-bornemann"AT"uni-hamburg.de

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References

• Get data of project UNI_HH_MI_fielddata from CERA

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

Please cite the data as follows:

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

and with the following acknowledgments:

Thanks to ICDC, CEN, University of Hamburg for data support.

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