API src

Found 3394 results.

Related terms

Continuous thermosalinograph oceanography along RV HEINCKE cruise track HE651

Raw data acquired by a thermosalinograph (SBE21, SeaBird GmbH) on board RV HEINCKE were processed to receive a calibrated and validated data set of seawater temperature and salinity. Data were downloaded from DAVIS SHIP data base (https://dship.awi.de) with a resolution of 1 sec. The SBE21 was equipped with an additional external temperature sensor (SBE38, Sea-Bird GmbH). Raw data are converted to temperature and conductivity values using the calibration coefficients from the calibration before deployment. However, data can only be finally processed after replacement and renewed calibration because correction values for the sensor drift can only be obtained by the post cruise calibration. The thermosalinograph on board RV HEINCKE is exchanged about once a year and calibration procedures are conducted after every exchange. Salinity was calculated according to the instructions from the Practical Salinity Scale PSS-78 using the obtained internal temperature and conductivity data. Processed data are provided as 1min means of salinity and seawater temperature aligned with position data taken from master track of the respective cruise. Quality flags are appended according to the SeaDataNet Data Quality Control Procedures (version from May 2010).

Continuous thermosalinograph oceanography along RV HEINCKE cruise track HE634

Raw data acquired by a thermosalinograph (SBE21, SeaBird GmbH) on board RV HEINCKE were processed to receive a calibrated and validated data set of seawater temperature and salinity. Data were downloaded from DAVIS SHIP data base (https://dship.awi.de) with a resolution of 1 sec. The SBE21 was equipped with an additional external temperature sensor (SBE38, Sea-Bird GmbH). Raw data are converted to temperature and conductivity values using the calibration coefficients from the calibration before deployment. However, data can only be finally processed after replacement and renewed calibration because correction values for the sensor drift can only be obtained by the post cruise calibration. The thermosalinograph on board RV HEINCKE is exchanged about once a year and calibration procedures are conducted after every exchange. Salinity was calculated according to the instructions from the Practical Salinity Scale PSS-78 using the obtained internal temperature and conductivity data. Processed data are provided as 1min means of salinity and seawater temperature aligned with position data taken from master track of the respective cruise. Quality flags are appended according to the SeaDataNet Data Quality Control Procedures (version from May 2010).

Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM129/1

Underway optical chlorophyll-a and turbidity data were collected along the cruise track with Sea-Bird Scientific ECO FLNTU sensors installed within two autonomous measurement containers, as part of the "Reinseewassersystem" (RSWS). The containers measure alternatingly. While one container is measuring, the other one is being cleaned. The boxes switched generally every 12 hours. The water inlet for the RSWS is at about 6.5 m below sea surface. Observed chlorophyll-a and turbidity data were both quality controlled. Analysis of the chlorophyll-a and turbidity data during parallel operation of the sensors in the two boxes showed significant differences between the sensors. The sensors were aligned resulting in consistent chlorophyll-a and turbidity time series. The corrected chlorophyll-a data were calibrated based on chlorophyll-a values from discrete water samples taken from a RSWS water outlet in the hangar. Samples were frozen and measured fluorometrically in the lab. The time series was separated into two sections, coastal and open ocean, which were calibrated independently. The turbidity time series was also compared to suspended particulate matter from water samples, however, correlation was low and therefore the comparison not used for calibrating turbidity. The calibrated chlorophyll-a time series and corrected turbidity time series were compared against Globcolour CHL1 and TSM products, respectively. Details on all quality control steps, the calibration, and the comparison with satellite data can be found in the data processing report. The data set user should keep in mind that some parts of the time series are likely affected by non-photochemical quenching, see data processing report. It was out of the scope of the quality control to flag or correct non-photochemical quenching. The resulting data set contains the original data and corresponding quality flags achieved by the quality control algorithm as well as the calibrated chlorophyll-a and corrected turbidity data with corresponding quality flags. The data source is given through the name of the active container. The data set contains data during transit time and station work. We recommend to use ship's speed to filter for only transit data.

Hydrochemistry at time series station Helgoland Roads, North Sea, in 2022

In 2022, the hydrochemistry of surface water was monitored at Helgoland Roads station on every workday, typically before 9 a.m. Temperature was measured on board immediately after sampling. Visibility was measured immediately on board using a Secchi Disk. Salinity, dissolved inorganic nutrients, pH and oxygen were measured from a bucket sample in the laboratory. Further information regarding the methodology and the devices used can be found in the metadata description.

Continuous thermosalinograph oceanography along RV ALKOR cruise track AL644

Underway temperature and salinity data was collected along the cruise track with a SBE21 thermosalinograph (TSG) together with a SBE38 Thermometer. Both systems worked throughout the cruise. While temperature is taken at the water inlet in about 4 m depth, salinity is calculated within the interior TSG from conductivity and interior temperature. No temperature validation was performed. Salinity was validated with independent water samples taken at the water inlet. For details to all processing steps see Data Processing Report.

Continuous thermosalinograph oceanography along RV POLARSTERN cruise track PS143/1

Raw data acquired by two SBE21 thermosalinograph and two auxiliary SBE38 temperature sensor (Sea-Bird Scientific, USA) installed in an underway seawater flow-through system on board RV Polarstern were processed to yield a calibrated and validated data set of temperature and salinity along the cruise track. Data were downloaded from DAVIS SHIP data base (https://dship.awi.de) at a resolution of 1 sec, and converted to temperature and conductivity using the pre-deployment factory calibration coefficients. The converted data were averaged to 1 min values, outliers were removed, and sensor drift was corrected using coefficients obtained from a post-season calibration performed at Sea-Bird at the end of the measurement season. Salinity was calculated from internal temperature, conductivity and pressure according to the PSS-78 Practical Salinity Scale. Processed data are provided as 1 min means of seawater temperature, conductivity and salinity, aligned with position data taken from the master track. Quality flags are appended according to the SeaDataNet Data Quality Control Procedures (version from May 2010). More details are described in the attached processing report.

Nährstoffsensible Gebiete von Agrarumwelt- und Klimamaßnahmen (AUKM)

In der Kulisse werden AUKM zur Anwendung nachhaltiger Produktionsverfahren zur Verbesserung der natürlichen und wirtschaftlichen Produktionsbedingungen durch die extensive Bewirtschaftung von Ackerflächen an Gewässern, in Auen und in wassersensiblen Gebieten gefördert. Die extensiv bewirtschafteten Ackerflächen, die in unmittelbarer Nähe von Seen, Flüssen, Bächen, Gräben sowie in Auen- und Flussniederungsgebieten liegen, dienen insbesondere dem Schutz der Wasserqualität, der Verbesserung des Zustands der Oberflächengewässer und darüber hinaus dem Schutz der Böden vor Wassererosion. In der Kulisse werden AUKM zur Anwendung nachhaltiger Produktionsverfahren zur Verbesserung der natürlichen und wirtschaftlichen Produktionsbedingungen durch die extensive Bewirtschaftung von Ackerflächen an Gewässern, in Auen und in wassersensiblen Gebieten gefördert. Die extensiv bewirtschafteten Ackerflächen, die in unmittelbarer Nähe von Seen, Flüssen, Bächen, Gräben sowie in Auen- und Flussniederungsgebieten liegen, dienen insbesondere dem Schutz der Wasserqualität, der Verbesserung des Zustands der Oberflächengewässer und darüber hinaus dem Schutz der Böden vor Wassererosion.

Wasserretentionsflächen von Agrarumwelt- und Klimamaßnahmen (AUKM)

Förderkulisse für die Agrarumweltmaßnahme für den Wasserrückhalt in der Landschaft, Teil II C der Richtlinie zur Förderung von Agrarumwelt- und Klimamaßnahmen zur Verbesserung des Klimaschutzes und der Wasserqualität auf landwirtschaftlich genutzten Flächen vom 24. Januar 2023. Zweck der Förderung ist die Wiederherstellung, Schaffung und Bereitstellung von Wasserretentionsflächen entlang von Gewässern bzw. innerhalb ausgewiesener Gewässereinzugsgebiete (z. B. auf landwirtschaftlich genutzten Flächen in Einzugsgebieten von Entwässerungsgräben). Auf den Wasserretentionsflächen kann sich Hochwasser ausbreiten und ansammeln, Niederschlagswasser im Boden zwischengespeichert und die Grundwasserneubildung durch langsamere Gebietsabflüsse unterstützt werden. Durch den Wasserrückhalt soll möglichst viel Wasser möglichst lange in der Fläche gehalten werden, um die Entstehung von Niedrig- und Hochwasserereignissen zu vermeiden und deren Auswirkungen zu vermindern. Die Wasserretentionsflächen leisten somit einen wichtigen Beitrag zur Anpassung der Landwirtschaft an den Klimawandel, insbesondere im Hinblick auf verändernden Niederschlagsereignisse und zunehmenden Trockenperioden (Niedrigwasservorsorge). Förderkulisse für die Agrarumweltmaßnahme für den Wasserrückhalt in der Landschaft, Teil II C der Richtlinie zur Förderung von Agrarumwelt- und Klimamaßnahmen zur Verbesserung des Klimaschutzes und der Wasserqualität auf landwirtschaftlich genutzten Flächen vom 24. Januar 2023. Zweck der Förderung ist die Wiederherstellung, Schaffung und Bereitstellung von Wasserretentionsflächen entlang von Gewässern bzw. innerhalb ausgewiesener Gewässereinzugsgebiete (z. B. auf landwirtschaftlich genutzten Flächen in Einzugsgebieten von Entwässerungsgräben). Auf den Wasserretentionsflächen kann sich Hochwasser ausbreiten und ansammeln, Niederschlagswasser im Boden zwischengespeichert und die Grundwasserneubildung durch langsamere Gebietsabflüsse unterstützt werden. Durch den Wasserrückhalt soll möglichst viel Wasser möglichst lange in der Fläche gehalten werden, um die Entstehung von Niedrig- und Hochwasserereignissen zu vermeiden und deren Auswirkungen zu vermindern. Die Wasserretentionsflächen leisten somit einen wichtigen Beitrag zur Anpassung der Landwirtschaft an den Klimawandel, insbesondere im Hinblick auf verändernden Niederschlagsereignisse und zunehmenden Trockenperioden (Niedrigwasservorsorge).

Erosionskulisse von Agrarumwelt- und Klimamaßnahmen (AUKM)

In der Kulisse sensibler Gebiete (wie Abflussrinnen) werden AUKM zur Umsetzung Klima- und Umweltangepasster sowie nachhaltiger Produktionsverfahren auf Ackerland gefördert. Die dauerhafte Umwandlung von Ackerland in Grünland trägt zur Verbesserung der natürlichen und wirtschaftlichen Produktionsbedingungen bei und soll der Anpassung der Landwirtschaft an den Klimawandel sowie dem Wasser- und Bodenschutz dienen. Die extensiv bewirtschafteten Ackerflächen, die in unmittelbarer Nähe von Seen, Flüssen, Bächen, Gräben sowie in Auen- und Flussniederungsgebieten liegen, dienen insbesondere dem Schutz der Wasserqualität, der Verbesserung des Zustands der Oberflächengewässer und darüber hinaus dem Schutz der Böden vor Wassererosion. In der Kulisse sensibler Gebiete (wie Abflussrinnen) werden AUKM zur Umsetzung Klima- und Umweltangepasster sowie nachhaltiger Produktionsverfahren auf Ackerland gefördert. Die dauerhafte Umwandlung von Ackerland in Grünland trägt zur Verbesserung der natürlichen und wirtschaftlichen Produktionsbedingungen bei und soll der Anpassung der Landwirtschaft an den Klimawandel sowie dem Wasser- und Bodenschutz dienen. Die extensiv bewirtschafteten Ackerflächen, die in unmittelbarer Nähe von Seen, Flüssen, Bächen, Gräben sowie in Auen- und Flussniederungsgebieten liegen, dienen insbesondere dem Schutz der Wasserqualität, der Verbesserung des Zustands der Oberflächengewässer und darüber hinaus dem Schutz der Böden vor Wassererosion.

Oceanographic data of Time Series Station Spiekeroog for 2009

The Time Series Station Spiekeroog (TSS) was setup in 2002, in the tidal inlet between the East Frisian Islands of Langeoog and Spiekeroog in the Southern German Bight, at position 53°45′01.0″ N, 007°40′16.3″ E. The aim was to ensure the continuous measurement of physical, biological, chemical and meteorological parameters, even under extreme weather conditions such as storms, ice, and storm surges. The TSS was financed as part of the Deutsche Forschungsgemeinschaft (DFG) research unit BioGeoChemistry of Tidal Flats and the Ministry for Science and Culture of the Land of Lower Saxony (MWK). Here, water temperature and conductivity were measured in the year 2009. All raw data were revised and corrected for steps as range, outliers and stationarity checks. Water temperature and conductivity were measured in five different depths (4 m, 5.5 m, 7.5 m, 9.5 m, 11.5 m below MSL). Due to marine biofouling at the sensors and accompanying drift of instruments, the measured water temperature and conductivity data were corrected via linear regression by using reference data. As the water column in this region is well mixed and the water depth of the measurements varies with the tide, data from all five depths were averaged and referenced to a water depth of 4 m. Absolute salinity was derived from conductivity, temperature and pressure data according to TEOS 10. Data were smoothed and a quality flag was assigned for water temperature and salinity. The quality flags refer to the standard for data quality control of SeaDataNet https://www.seadatanet.org/ (0 = raw data, 1 = good data, 2 = probably good data, 3 = questionable data). Water level data for 2009 obtained at TSS are published by Holinde et al. (2015). A detailed description of the Time Series Station Spiekeroog, its structure and instrumentation can be found in Zielinski et al. (2022) and in Reuter et al. (2009).

1 2 3 4 5 … 338 339 340