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Distribution and concentration of nutrients, carbon compounds and methane in water samples in the southern German Bight (North Sea) in September 2024 during the MOSES Sternfahrt 12

The 12th Sternfahrt of the ElbeXtreme and MOSES projects took place in 2024 from September 02 to 13, within the area of the German Bight (North Sea). Its objective was to get a more systematic grid of sampling data by spatially integrated onboard sensors. Therefore, the MOSES-laboratory container was installed again. Water samples were taken from the surface with a rosette or via Niskin bottles. The first part of the cruise was conducted by the research vessel (RV) Ludwig Prandtl, starting on the 2nd of September on Heligoland. From there, the crew navigated towards Cuxhaven covering some stations from previous MOSES cruises. For the next days, the ship followed a rectangular track, shifting northward each day, heading towards Heligoland again. Due to strong winds, the sampling stations were reduced to three on the last day. On Heligoland the RV Mya II took over the laboratory container and other sampling equipment for the second part of the cruise. Persistent strong winds delayed the start of the cruise until September 11. Since most of the planned stations were already covered from the RV Ludwig Prandtl, the crew decided to expand the sampling area using a more systematic zig-zag line. With the return of Mya II in the afternoon of the 13th September 2024, the campaign was successfully finished.

Klimaanalysekarten 2022 (Umweltatlas)

Die Klimaanalysekarten sind Ergebnis einer durchgeführten gesamtstätischen Klimamodellierung im Land Berlin. Sie bilden den stadtklimatischen Ist-Zustand an einem durchschnittlichen autochthonen Sommertag ab. Die Klimaanalysekarten umfassen neben verschiedenen klimatischen Parametern, bestehend aus (1) dem bodennahen Windfeld und Kaltluftvolumenstromdichte, (2) die Luft- und (3) Oberflächentemperatur, (4) die nächtliche Abkühlung, sondern auch zwei thermische Bewertungsindizes, bestehend aus (5) dem PET und (6) dem UTCI. Die Zusammenfassung der Erkenntnisse aus der Klimaanalyse erfolgt in der (7) Klimaanalysekarte. Die Klimaanalysekarte ermöglicht es, die einzelnen Bereiche der Stadt nach ihren unterschiedlichen klimatischen Funktionen, d.h. ihrer Wirkung auf andere Räume, abzugrenzen. Die Karten der Klimaanalyse werden teilweise in einer Rasterdarstellung mit einer hohen räumlichen Auflösung von 10 m x 10 m sowie aggregiert auf etwa 25.000 Block- und Blockteilflächen angeboten.

Analytical data from stepped thermal analysis of agricultural soils in Saxony

The continuous agricultural soil monitoring program (BDF) by the Saxon State Office for Environment, Agriculture, and Geology (LfULG) is operational since 1995, collecting and analysing samples periodically from 60 monitoring sites across Saxony, Germany. Stepped thermal analysis allows for the fast and cost-effective determination of different carbon fractions of ground soil samples. This dataset reports the analysis of 902 archive samples from the Soil Monitoring Program of the State Office for Environment, Agriculture, and Geology (LfULG) collected between 1995 and 2023, and 462 samples collected during a sampling campaign in September 2023. We report the thermal soil carbon fractions TOC400, ROC (ROC600), and TIC900 measured in air-dried and ground samples according to DIN19539 / DIN EN 17505 using an Elementar soliTOC cube. This dataset is part of a mid-infrared soil spectral library for agricultural soils in Saxony, Germany.

Wadden Sea carbon stock dynamics during thirty years of summer polder restoration

Salt marshes along the Wadden Sea coast are often shaped by anthropogenic alterations to their hydrology and sedimentation. To investigate the effects of hydrological restoration through summer dike openings on soil carbon storage capacities, soil samples were collected from four study sites along the Lower Saxony Wadden Sea coast, Germany. Each site featured restored areas, i.e., former summer polders reconnected to tidal exchange, and reference salt marshes adjacent to the polders. The polders varied in restoration age, i.e., 0 (control, not restored), 8, 14, and 28 years, forming a chronosequence for temporal analysis, while the reference salt marshes remained unchanged. Soil samples were taken along transects that represented different marsh zones, including pioneer, lower salt marsh, and upper salt marsh. The soil samples covered soil layers down to a depth of 100 cm and were collected in five sections of 20 cm using an Edelman corer. Total carbon, organic carbon, and inorganic carbon were analyzed using CN-elementary analysis and calcimeter methods. This dataset provides valuable insights into the potential of hydrological restoration measures to enhance soil carbon sequestration in salt marshes.

Soil physicochemical properties of the PhytOakmeter plot DGRL_14 (Greifenhagen, Germany) in 2016, 2020 and 2022

As part of PhytOakmeter platform (www.phytoakmeter.de), soil chemical parameters were determined in 2016, 2020 and 2022. Soil pH was measured using a glass electrode in a 1:2.5 soil-to-0.01 M CaCl2 suspension after one hour of equilibration. Gravimetric soil moisture was assessed with a fully automated moisture analyzer (DBS60-3, KERN & SOHN GmbH, Balingen, Germany), here defined as soil moisture (MOI). Total nitrogen (TN) and total carbon (TC) contents in the soil were analyzed in triplicate through dry combustion using a Vario elemental analyzer (EL III, Elementar, Hanau, Germany), and the carbon-to-nitrogen ratio (TC/TN) was subsequently calculated from these values. To evaluate the potentially bioavailable soil organic carbon and nitrogen for microbial activity, hot water-extractable carbon and nitrogen (HWC and HWN, respectively) were determined following the methods of Ghani et al. (2003) and Schulz et al. (2011). Additionally, the labile organic carbon and nitrogen easily decomposable by soil microorganisms were measured as cold water-extractable carbon (CWC) and nitrogen (CWN) based on procedures described by Zsolnay (1996), Zakharova et al. (2015), and Schmidt et al. (2017). Ammonium and nitrate (NH4±N and NO3—N, respectively) were quantified, with their sum representing the total mineral nitrogen content (Nmin).

Grundwassermessstelle DEGM_DEMV_25360014: Möderitz

Stammdaten und Analysedaten zu den Grundwassermessstellen im EUA-Messnetz: Messtelle DEGM_DEMV_25360014 (Möderitz)

Grundwassermessstelle DEGM_41390197: Dessau-Waldersee

Stammdaten und Analysedaten zu den Grundwassermessstellen im EUA-Messnetz: Messtelle DEGM_41390197 (Dessau-Waldersee)

Water chemistry of Lagrangian samplings of Inland Elbe 2024 (MOSES Hydrological Extremes)

Within the framework of MOSES (Modular Observation Solutions for Earth Systems) and ElbeXtreme, we performed three longitudinal sampling campaigns in the Elbe catchment in 2024. The campaigns covered the German freshwater part, the tidal Elbe river, and the German Bight. Here we present the results of the freshwater river where the sampling was conducted in a Langrangian way according to flow velocity. Physico-chemical and biological parameters were measured along the Elbe from bridges between Bad Schandau (km 12, Czech-German border) and Lauenburg (km 570, close to Hamburg). A particular scientific focus was on (1) nutrients and eutrophication, (2) composition of dissolved organic matter measured by high-resolution mass spectrometry, (3) greenhouse gas measurements, and (4) micropollutants. This was done during a winter flood event in January, a summer drought in July, and a second smaller flood in September 2024.

Grundwassermessstelle DEGM_SH_1290: SÜDERLÜGUMFELD

Stammdaten und Analysedaten zu den Grundwassermessstellen im EUA-Messnetz: Messtelle DEGM_SH_1290 (SÜDERLÜGUMFELD)

Flussmessstelle Nr. 2101 in Main, Bischofsheim, Messstation linkes Ufer

Dieser Datensatz enthält Informationen zur Flussmessstelle Nr. 2101 in Main, Bischofsheim, Messstation linkes Ufer. Auf der Webseite zur Messstelle ist ein Link zum Herunterladen der Rohdaten vorhanden.

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