2,139 research outputs found
Expendable Conductive-Temperature-Depth (xCTD) data from MOSAiC leg 5 north of Greenland
No full textXctd (Expendable Conductive-Temperature-Depth) data were collected north of Greenland during MOSAiC leg5, when R/V Polarstern was relocated north between leg4 and leg5. The data were collected mid-August 2020. The data contained temperature, salinity and pressure from the surface to 500 m depth. The data are despiked and corrected from a salinity offest of 0.03. The data were collected by team OCEAN during leg 5 ( Zoe Koenig, Mario Hoppmann, Salar Karan and Jacob Allerholt) at the aft of the ship
Thickness and properties of sea ice and snow of land-fast sea ice in Atka Bay in 2012
No full textManual measurements of sea ice thickness, sub-ice platelet layer thickness, freeboard, and snow thickness are distributed evenly and repeated along a 25km-long transect across Atka Bay every 2 to 4 weeks. At each measurement location, 5 holes were drilled through the ice in order to determine the aforementioned parameters, one in the center and one in a distance of five meters in each direction, to cover their small-scale spatial variabilities.
Version 2, 2018-04-26.
The measurements have been mainly conducted by the meteorologist (Thomas Schmidt) and Meine Kühnel during the overwintering. During a subsequent summer campaign, the measurements have been conducted by Mario Hoppmann, Priska A. Hunkeler and Stephan Paul
Moeglichkeiten und Grenzen der Wirtschaftsdemokratie – Der Fall Hoppmann (Prospects and Limitations of Economic Democracy – The Case of the Hoppmann Company)
No full textKonzepte der Wirtschaftsdemokratie wurden in Deutschland in den 1920er Jahren intensiv, vor allem von Gewerkschaftern und einigen Sozialwissenschaftlern diskutiert. Diese Konzepte gingen auch in Rekonstruktionsperiode in Westdeutschland nach dem 2. Weltkrieg ein. Dieser Artikel betrachtet eine Firma, die Hoppmann GmbH, Autohaendler und Reparatur in Siegen, die in den 1960er Jahren ein weitreichendes Partizipationsmodell einfuehrte, das weit ueber die gesetzlich vorgeschriebene Mitbestimmung hinausgeht. Interviews wurden 2008 gefuehrt, um die Entwicklung und die UEberlebensfaehigkeit des Modells zu evaluieren. Der oekonomische und soziale Erfolg der Firma gibt Anlass zu UEberlegungen zu einer Ausweitung wirtschaftsdemokratischer Prinzipien wie auch deren Begrenzungen in einer „sozialen Marktwirtschaft“. (Concepts of economic democracy were widely discussed in Germany in the 1920s, particularly by trade unionists and some social scientists. These concepts influenced the reconstruction period in West Germany after WW II. In this article the author looks at a company which introduced a far-reaching model of worker participation in the 1960s – one which went far beyond the legal framework of co-determination. Interviews were conducted in 2008 in order to evaluate the development and viability of the model. The economic and social success of the company prompts reflections on a further extension, as well as on the limitations of democratic principles in a “social-market economy”.)economic democracy, codetermination, social market economy, management of SMEs
Physical oceanography during RV HEINCKE cruise HE651
No full textConductivity-temperature-depth profiles were measured using a Seabird SBE 911plus CTD during RV HEINCKE cruise HE651. The CTD was equipped with duplicate sensors for temperature (SBE3plus), conductivity (SBE4) and oxygen (SBE43). Additional sensors such as a WET Labs C-Star transmissometer, a WET Labs ECO-AFL fluorometer and an altimeter (PSA-916 Teledyne (Benthos)) were mounted to the CTD. Temperature, conductivity and oxygen sensors are calibrated by the manufacturer once a year before being mounted in January. They are used throughout the year and no post-cruise or in-situ calibration is applied. All other sensors are calibrated irregularly. Data were connected to the station book of the specific cruise as available in the DSHIP database. Processing of the data including removal of obvious outliers followed the procedures described in CTD Processing Logbook of RV HEINCKE (hdl:10013/epic.47427). The processing report for this dataset is linked below
Temperature and heating-induced temperature difference measurements from SIMBA-type sea ice mass balance buoy 2012T4
No full textTemperature and heating-induced temperature difference profiles were measured through the atmosphere, sea ice, and ocean using a SIMBA-type sea ice mass balance buoy equipped with a several meter long thermistor chain. The present dataset was recorded by SIMBA 2012T4 (original name Awi_31) installed on landfast sea ice in Atka Bay, Antarctica, during the expedition Neumayer AFIN in 2012. Data is available between 2012-11-22 17:01:00 and 2014-02-09 22:06:00. The thermistor chain was Variable 5 m long and included 240 sensors with a regular spacing of 2 cm. The resulting time series includes the evolution of temperature and temperature differences at 30 s and 120 s during a heating cycle of 120 s as a function of location, depth and time. The sampling intervals were usually between hourly and daily, but were most frequently configured to 6 hours for temperature, and 24 hours for temperature differences. In addition to temperatures and geographic location were measured. The present dataset was processed as follows: obvious inconsistencies (missing values) and unrealistic values of GPS position have been removed. This instrument was deployed as part of the project Antarctic Fast Ice Network (AFIN)
Sea Ice Physics @ AWI (AWI_SeaIce)
Spectral radiation fluxes, albedo and transmittance from autonomous measurement from Radiation Station 2020R15, deployed during MOSAiC 2019/20
No full textSolar radiation over and under sea ice was measured by radiation station 2020R15, an autonomous platform, installed on drifting First-Year-Ice (FYI) in the Arctic Ocean during MOSAiC (Leg 4) 2019/20. The resulting time series describes radiation measurements as a function of place and time between 13 July 2020 and 19 July 2020 in sample intervals of 3 hours. The radiation measurements have been performed with spectral radiometers. All data are given in full spectral resolution interpolated to 1.0 nm, and integrated over the entire wavelength range (broadband, total: 320 to 950 nm). Two sensors, solar irradiance and upward reflected solar irradiance, were mounted on a on a platform about 1 m above the sea ice surface. The third sensor was mounted 0.5 m underneath the sea ice measuring the downward transmitted irradiance.
This buoy had no own GPS source. It was located at the Central Observertory (CO2) of MOSAiC. The drift track of CO2 is published here:
Nicolaus, Marcel; Riemann-Campe, Kathrin; Bliss, Angela; Hutchings, Jennifer K; Granskog, Mats A; Haas, Christian; Hoppmann, Mario; Kanzow, Torsten; Krishfield, Richard A; Lei, Ruibo; Rex, Markus; Li, Tao; Rabe, Benjamin (2021): Drift trajectory of the Central Observatory 2 (CO2) of the Distributed Network of MOSAiC 2019/2020. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.93718
Physical oceanography during RV HEINCKE cruise HE660
No full textConductivity-temperature-depth profiles were measured using a Seabird SBE 911plus CTD during RV HEINCKE cruise HE660. The CTD was equipped with duplicate sensors for temperature (SBE3plus), conductivity (SBE4) and oxygen (SBE43). Additional sensors such as a WET Labs C-Star transmissometer, a WET Labs ECO-AFL fluorometer and an altimeter (PSA-916 Teledyne (Benthos)) were mounted to the CTD. Temperature, conductivity and oxygen sensors are calibrated by the manufacturer once a year before being mounted in January. They are used throughout the year and no post-cruise or in-situ calibration is applied. All other sensors are calibrated irregularly. Data were connected to the station book of the specific cruise as available in the DSHIP database. Processing of the data including removal of obvious outliers followed the procedures described in CTD Processing Logbook of RV HEINCKE (hdl:10013/epic.47427). The processing report for this dataset is linked below
Field measurements of snow and ice thicknesses and freeboard on the landfast ice of the Atka Bay near the Ekström ice shelf in Antarctica in 2011, Version 1
No full textPhysical oceanography during RV HEINCKE cruise HE671
No full textConductivity-temperature-depth profiles were measured using a Seabird SBE 911plus CTD during RV HEINCKE cruise HE671. The CTD was equipped with duplicate sensors for temperature (SBE3plus), conductivity (SBE4) and oxygen (SBE43). Additional sensors such as a WET Labs C-Star transmissometer, a WET Labs ECO-AFL fluorometer and an altimeter (PSA-916 Teledyne (Benthos)) were mounted to the CTD. Temperature, conductivity and oxygen sensors are calibrated by the manufacturer once a year before being mounted in January. They are used throughout the year and no post-cruise or in-situ calibration is applied. All other sensors are calibrated irregularly. Data were connected to the station book of the specific cruise as available in the DSHIP database. Processing of the data including removal of obvious outliers followed the procedures described in CTD Processing Logbook of RV HEINCKE (hdl:10013/epic.47427). The processing report for this dataset is linked below
Physical oceanography during RV HEINCKE cruise HE655/2
No full textConductivity-temperature-depth profiles were measured using a Seabird SBE 911plus CTD during RV HEINCKE cruise HE655/2. The CTD was equipped with duplicate sensors for temperature (SBE3plus), conductivity (SBE4) and oxygen (SBE43). Additional sensors such as a WET Labs C-Star transmissometer, a WET Labs ECO-AFL fluorometer and an altimeter (PSA-916 Teledyne (Benthos)) were mounted to the CTD. Temperature, conductivity and oxygen sensors are calibrated by the manufacturer once a year before being mounted in January. They are used throughout the year and no post-cruise or in-situ calibration is applied. All other sensors are calibrated irregularly. Data were connected to the station book of the specific cruise as available in the DSHIP database. Processing of the data including removal of obvious outliers followed the procedures described in CTD Processing Logbook of RV HEINCKE (hdl:10013/epic.47427). The processing report for this dataset is linked below
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