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Steuerrandmessungen Elbe und Jade/Weser 2012

Die BAW (Bundesanstalt für Wasserbau) führt im Auftrag der WSV (Wasserstraßen- und Schifffahrtsverwaltung des Bundes) umfangreiche F&E-Untersuchungen (Forschung- und Entwicklung) zur Klimafolgenforschung sowie zur Auswirkung geplanter Ausbaumaßnahmen an Seeschifffahrtsstraßen durch. Hierfür werden hochauflösende dreidimensionale numerische Simulationsmodelle eingesetzt. Die Aussagefähigkeit und Qualität der Simulationsergebnisse ist hierbei entscheidend von der Güte der Steuerung an den Modellrändern abhängig. Die Modelltopographie (= "Rechengitter") und die verwendeten hydrologischen Bedingungen auf den Modellrändern sollten möglichst einen identischen Zeitraum repräsentieren. Da die Modelltopographien für die Modellgebiete des "Jade-Weser" und des "Elbe" - Modells der BAW im Jahr 2012 neu aufgebaut worden sind, ist im Sommer 2012 ein Messprogramm zur Erfassung der hydrologischen Randbedingungen durchgeführt worden. Zu diesem Zweck hat die BAW - Dienstort Hamburg ein Messnetz aus insgesamt 13 Beobachtungsstationen entlang der Steueränder der numerischen Modellsysteme eingerichtet. Mindestens über den Zeitraum eines "Nipp-Spring-Zyklus" (~ 14 Tage) wurden in verschiedenen Gerätekonfigurationen folgende Parameter gemessen: CTD-Messungen (Conductivity, Temperature, Depth): - Wasserspiegelauslenkung (Tidekurve) - Salinität - Temperatur - Trübung (teilweise) Für Zwecke der Modellvalidierung sind auf einem ca. 10 km parallel in das Modellgebiet verschobenen Rand ADCP-Messungen (Acoustic Doppler Current Profiler): - Strömungs- und - Seegangsmessungen (teilweise) durchgeführt worden. Soweit verfügbar sind Daten der von der WSV betriebenen Pegelstationen einbezogen worden. Für meterologische Informationen stehen Daten des DWD zur Verfügung (Quelle: Deutscher Wetterdienst).

Etude de l'etat general du littoral et du rivage des lacs suisses (FRA)

Mise au point et application d'une methode de qualification phyto-ecologique des rives lacustres. Proposition de mesures de conservation et de protection des rives. Seize lacs sont impliques dans le projet. (FRA)

Biological Decontamination of Heavy Metal Polluted Soils Using Hyperaccumulator Plants: Influencing the Uptake of Heavy Metals in the Root Zone

Remediation of heavy-metal polluted agricultural soils requires gentle methods, i.e. methods by which the fertility of the soil is fully restored. This means that harsh methods such as the extraction of metals by strong acids or soil washing are not applicable as they do not only remove the pollutants, but also destroy the physical and chemical basis of soil fertility, e.g. soil structure and cation exchange sites. As soil cleaning by metal harvesting through accumulator plants had shown to be a promising, but not yet sufficiently effective technique for the gentle remediation of heavy metal contaminated soils, we investigated possibilities to increase the efficiency of phytoextraction by enhancing the phytoavailability of the metals cadmium, zinc and copper for various metal-polluted agricultural soils of Switzerland. We focussed on two innovative approaches. In the first approach we evaluated the possibility to enhance metal phytoavailability by the addition of elemental sulphur to the soil. The other approach started out from the completely innovative idea to exploit natural siderophores as agents to enhance metal availability. Elemental sulphur application was very effective in solubilizing Zn and Cd in calcareous soil and even more in acidic soil. Unfortunately, however, the effect on plant uptake was much weaker than on the solubility of the metals in the soil. Still, metal uptake in plants grown on calcareous soil under field conditions was increased up a factor of 8. Additional field trials performed at other locations in Switzerland showed that the conditions at Dornach were particularly difficult for phytoremediation. At the current state-of-the-art, clean-up of metal-polluted soils by phytoextraction would require still several decades also the other investigated sites, however. The siderophore studies were performed with model systems consisting of soil mineral suspensions, addressing the lack of a fundamental study of the interactions between siderophore, metals and soil constituents. Desferrioxamine B (DFOB) was used as a model siderophore. For comparison, analogous experiments were performed with citrate and NTA. The results show that the effect of such ligands can be mobilizing as well as immobilizing, depending on soil conditions. While the effects in the model system could be under-stood in terms of chemical speciation modelling, it was found that they did not fully explain the effects observed with field soil samples, suggesting that the model system did not fully represent the dominant features of the real soil. However, the experiments opened up new perspectives for the use of siderophores worth to be further investigated.

Physical oceanography during RV HEINCKE cruise HE601

Conductivity-temperature-depth profiles were measured using a Seabird SBE 911plus CTD during RV Heincke cruise HE601. 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.

METOP GOME-2 - Cloud Top Pressure (CTP) - Global

Gridded Level 3 cloud top pressure derived from Metop/GOME observations. Cloud physical properties (cloud fraction, cloud top height, cloud optical thickness) are derived from GOME/GOME-2 observations using the OCRA (Optical Cloud Recognition Algorithm) and ROCINN (Retrieval of Cloud Information using Neural Networks). For more details please refer to relevant peer-review papers listed on the GOME and GOME-2 documentation pages: https://atmos.eoc.dlr.de/app/docs/ The Global Ozone Monitoring Experiment-2 (GOME-2) instrument continues the long-term monitoring of atmospheric trace gas constituents started with GOME / ERS-2 and SCIAMACHY / Envisat. Three instruments operate on board EUMETSAT's Meteorological Operational satellites MetOp-A, -B, and -C, launched in 2006, 2012, and 2018, respectively. GOME-2 measures a range of atmospheric trace constituents, with the emphasis on global ozone distribution. Furthermore, cloud properties and intensities of ultraviolet radiation are retrieved. These data are crucial for monitoring the atmospheric composition and the detection of pollutants. DLR generates operational GOME-2 / MetOp products in the framework of EUMETSAT's Satellite Application Facility on Atmospheric Composition Monitoring (AC-SAF).

Grundwassermessstelle DEGM_DERP_2573231500: Weisel, Quelle 1 Wiesen Quelle

Stammdaten und Analysedaten zu den Grundwassermessstellen im EUA-Messnetz: Messtelle DEGM_DERP_2573231500 (Weisel, Quelle 1 Wiesen Quelle)

Grundwassermessstelle DEGM_DERP_2587260000: 6505 Rennerod, Hahneck

Stammdaten und Analysedaten zu den Grundwassermessstellen im EUA-Messnetz: Messtelle DEGM_DERP_2587260000 (6505 Rennerod, Hahneck)

Physical oceanography during RV MARIA S. MERIAN cruise MSM123

Physical oceanography data was acquired by a ship-based Seabird SBE911plus CTD-Rosette system onboard RV MARIA S. MERIAN during research cruise MSM123. The CTD system is comprised of a Seabird SBE911plus including dual respectively redundant sensor and pump packages. The SBE11plus Deck Unit remains on board in a laboratory and supplies on one hand power to the SBE9plus underwater unit, on the other hand data telemetry between the SBE9plus and a measurement PC. The SBE9plus underwater unit itself holds a pressure sensor and is interfacing with dual SEB3 temperature, SBE4 conductivity and SBE43 oxygen sensors, as well as two SBE5 pumps to provide a pumped water supply past each sensor. The system also carries an optical FLNTU sensor to measure a combination of back-scattering, turbidity, and chlorophyll-a. To quantify the photo-synthetically active radiation a PAR sensor is installed as well.

Physical oceanography during RV HEINCKE cruise HE607

Conductivity-temperature-depth profiles were measured using a Seabird SBE 911plus CTD during RV Heincke cruise HE607. 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 HE651

Conductivity-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.

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