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Molecular indices calculated from the FT-ICR-MS data and environmental data, including dissolved organic carbon and dissolved organic nitrogen in the sea surface microlayer during a Mesocosm study in Wilhelmshaven, Germany, spring 2023

We studied dissolved organic matter (DOM) dynamics in the sea surface microlayer (SML) during a mesocosm study at the Sea sURface Facility (SURF) of the Institute for Chemistry and Biology of the Marine Environment (ICBM) in Wilhelmshaven, Germany (53.5148 °N, 8.1463°E). The study was conducted from 18 May to 16 June 2023 as part of the multidisciplinary BASS research unit (Biogeochemical processes and Air-sea exchange in the Sea-Surface microlayer). SURF was filled with pretreated natural seawater from the nearby Jade Bay (53° 28' 42'' N, 8° 12' 15'' E) to replicate natural conditions. We selected this approach to examine the regrowth of surviving phytoplankton cells after the initial water treatments, simulating a native microbial community starting with almost no bioproduction or pre-existing bioproduction products. To induce and maintain the phytoplankton bloom, inorganic nitrogen, phosphorus, and silicate were added on May 26, May 31, and June 01, 2023. By that we induced an algal bloom of Emiliania huxleyi and Cylindrotheca closterium. By combining molecular analyses with nutrient and trace metal data, we highlight the in situ production of carbohydrate-like and laminarin-derived DOM as a significant contributor to the SML composition. This dataset contains DOM molecular data from ultrahigh-resolution mass spectrometry (Fourier-transform ion cyclotron resonance mass spectrometer, FT-ICR-MS), molecular indices calculated from the FT-ICR-MS data (Ibio, Iphoto, IDEG) and environmental data, including dissolved organic carbon (DOC), dissolved organic nitrogen (DON) data. Water samples were collected via glass plate for the SML and at 40 cm depth via tube. Furthermore, it contains attenuated total reflectance Fourier Transform Infrared (ATR-FTIR) data from representative samples for each bloom phase.

Dissolved organic matter molecular data in the sea surface microlayer during a Mesocosm study in Wilhelmshaven, Germany, spring 2023

We studied dissolved organic matter (DOM) dynamics in the sea surface microlayer (SML) during a mesocosm study at the Sea sURface Facility (SURF) of the Institute for Chemistry and Biology of the Marine Environment (ICBM) in Wilhelmshaven, Germany (53.5148 °N, 8.1463°E). The study was conducted from 18 May to 16 June 2023 as part of the multidisciplinary BASS research unit (Biogeochemical processes and Air-sea exchange in the Sea-Surface microlayer). SURF was filled with pretreated natural seawater from the nearby Jade Bay (53° 28' 42'' N, 8° 12' 15'' E) to replicate natural conditions. We selected this approach to examine the regrowth of surviving phytoplankton cells after the initial water treatments, simulating a native microbial community starting with almost no bioproduction or pre-existing bioproduction products. To induce and maintain the phytoplankton bloom, inorganic nitrogen, phosphorus, and silicate were added on May 26, May 31, and June 01, 2023. By that we induced an algal bloom of Emiliania huxleyi and Cylindrotheca closterium. By combining molecular analyses with nutrient and trace metal data, we highlight the in situ production of carbohydrate-like and laminarin-derived DOM as a significant contributor to the SML composition. This dataset contains DOM molecular data from ultrahigh-resolution mass spectrometry (Fourier-transform ion cyclotron resonance mass spectrometer, FT-ICR-MS), molecular indices calculated from the FT-ICR-MS data (Ibio, Iphoto, IDEG) and environmental data, including dissolved organic carbon (DOC), dissolved organic nitrogen (DON) data. Water samples were collected via glass plate for the SML and at 40 cm depth via tube. Furthermore, it contains attenuated total reflectance Fourier Transform Infrared (ATR-FTIR) data from representative samples for each bloom phase.

Dissolved organic matter composition in the sea surface microlayer during a Mesocosm study in Wilhelmshaven, Germany (FT-ICR-MS and ATR-FTIR), spring 2023

We studied dissolved organic matter (DOM) dynamics in the sea surface microlayer (SML) during a mesocosm study at the Sea sURface Facility (SURF) of the Institute for Chemistry and Biology of the Marine Environment (ICBM) in Wilhelmshaven, Germany (53.5148 °N, 8.1463°E). The study was conducted from 18 May to 16 June 2023 as part of the multidisciplinary BASS research unit (Biogeochemical processes and Air-sea exchange in the Sea-Surface microlayer). SURF was filled with pretreated natural seawater from the nearby Jade Bay (53° 28' 42'' N, 8° 12' 15'' E) to replicate natural conditions. We selected this approach to examine the regrowth of surviving phytoplankton cells after the initial water treatments, simulating a native microbial community starting with almost no bioproduction or pre-existing bioproduction products. To induce and maintain the phytoplankton bloom, inorganic nitrogen, phosphorus, and silicate were added on May 26, May 31, and June 01, 2023. By that we induced an algal bloom of Emiliania huxleyi and Cylindrotheca closterium. By combining molecular analyses with nutrient and trace metal data, we highlight the in situ production of carbohydrate-like and laminarin-derived DOM as a significant contributor to the SML composition. This dataset contains DOM molecular data from ultrahigh-resolution mass spectrometry (Fourier-transform ion cyclotron resonance mass spectrometer, FT-ICR-MS), molecular indices calculated from the FT-ICR-MS data (Ibio, Iphoto, IDEG) and environmental data, including dissolved organic carbon (DOC), dissolved organic nitrogen (DON) data. Water samples were collected via glass plate for the SML and at 40 cm depth via tube. Furthermore, it contains attenuated total reflectance Fourier Transform Infrared (ATR-FTIR) data from representative samples for each bloom phase.

Grundwassermessstelle APP_GWMN_397

Dieser Datensatz beschreibt die Grundwassermessstelle APP_GWMN_397 in Schleswig-Holstein. Die Messstelle liegt im Grundwasserkörper EL05 : NOK - Marschen. Es liegen insgesamt 32677 Messwerte vor. Es liegen außerdem 24 Probenentnahmen vor (siehe Resourcen).

Hydrochemistry, carbon dynamics, and calculated pCO2 and CO2 fluxes, and soil-derived natural organic matter characteristics from the White Main, a granitic headwater stream in Germany, 2023-2024 – Y1-Y3 carbon chemistry

This dataset comprises hydrochemical and soil data collected along the first 1.3 km downstream of the White Main spring in northern Bavaria, Germany, from March 2023 to April 2024. Stream water samples were analyzed for in-situ parameters (discharge, water temperature [°C], pH [-], redox potential [mV], electrical conductivity [µS/cm], Table Y1), and laboratory-measured parameters, including major ions and trace metals [mmol/L] (Table Y3), alkalinity [mmol/L], , dissolved inorganic and organic carbon (DIC, DOC [mmol/L]) and their stable isotope ratios (δ13CDIC/DOC ‰-VPDB). In addition, calculated partial pressure of CO2 (pCO2, [µatm]) and carbon dioxide fluxes (FCO2, [mmol/m2 d]), are provided for the stream water samples (Table Y2). The dataset also contains laboratory measurements related to soil-derived natural organic matter from acid and base soil extracts, including zeta potential ([mV], Table X1), particle size distribution ([%], Table X2), ultraviolet-visible absorbance (UV-VIS, Table X3), and fluorescence measurements (Table X4). UV-VIS (Table X5) and fluorescence measurements (Table X6) were additionally done for stream water samples. The datasets were collected to characterize hydrochemistry, carbon concentrations, carbon dioxide dynamics, and soil-derived organic matter properties in a granitic headwater stream and to provide a basis for reuse in studies of headwater biogeochemistry, carbon cycling, and soil-water interactions.

Grundwassermessstelle APP_GWMN_277

Dieser Datensatz beschreibt die Grundwassermessstelle APP_GWMN_277 in Schleswig-Holstein. Die Messstelle liegt im Grundwasserkörper EI18 : Nördliche Dithmarscher Geest. Es liegen insgesamt 41961 Messwerte vor. Es liegen außerdem 21 Probenentnahmen vor (siehe Resourcen).

Heiße Tage mit steigenden Ozonkonzentrationen

<p> <p>Nach Wochen eher wechselhaften Sommerwetters sind mit der Hitzewelle auch die Ozonkonzentrationen angestiegen.</p> </p><p>Nach Wochen eher wechselhaften Sommerwetters sind mit der Hitzewelle auch die Ozonkonzentrationen angestiegen.</p><p> <p>Das ist nicht ungewöhnlich, denn in ruhigem Sommerwetter mit intensiver Sonneneinstrahlung und hohen Lufttemperaturen steigt die Ozonproduktion. Ozon wird bei intensiver Sonneneinstrahlung durch komplexe photochemische Prozesse aus Vorläuferschadstoffen - überwiegend Stickstoffoxiden und flüchtigen organischen Verbindungen gebildet. Hält das Sommerwetter für mehrere Tage an, steigt die Ozonkonzentration Tag für Tag an und kann es auch zur Überschreitung der Informationsschwelle von 180 µg/m³, lokal gegebenenfalls auch der Warnschwelle von 240 µg/m³ kommen. Bei Ozonwerten über der Informationsschwelle besteht für besonders empfindliche Bevölkerungsgruppen ein Risiko für die menschliche Gesundheit. Bei Ozonwerten über dem Alarmschwellenwert von 240 µg/m³ besteht bei der gesamten Bevölkerung ein Risiko für die menschliche Gesundheit und es wird über die Medien gewarnt. In den letzten Tagen kam es vor allem in Nordrhein-Westfalen, Niedersachsen, Hessen und Rheinland-Pfalz zur Überschreitung der Informationsschwelle. Heute kann es nochmals zu einzelnen Überschreitungen dieser Schwelle kommen. Mit einem Luftmassenwechsel, der heute bereits von Nordwesten her beginnt, werden auch die Ozonkonzentrationen am Wochenende wieder sinken.</p> <p>Grundsätzlich sind die <a href="https://www.umweltbundesamt.de/themen/luft/luftschadstoffe-im-ueberblick/ozon">Ozonwerte</a> bei sommerlichem <a href="https://www.umweltbundesamt.de/service/glossar/wetter">Wetter</a>⁠ in den Nachmittagsstunden am höchsten. Wer empfindlich auf Ozon reagiert, sollte Sport und andere körperlich anstrengende Tätigkeiten möglichst in den Abend, besser noch in die frühen Morgenstunden legen. Dann ist die Belastung deutlich geringer. Die Wohnung sollte am besten morgens gelüftet werden und dann die Fenster bis zum Abend geschlossen bleiben. Leider bringt es nichts, den Sport vom Stadtpark in den Wald zu verlegen, denn die Ozonwerte sind außerhalb der Innenstädte oft deutlich höher. Die höchsten Ozonwerte werden regelmäßig am Stadtrand und in den angrenzenden ländlichen Gebieten gemessen. Denn die Vorläuferstoffe des Ozons (Stickoxide aus dem Verkehr und flüchtige organische Verbindungen aus Lösemitteln von Farben, Lacken, Klebstoffen oder Reinigungsmitteln) werden durch Wind aus der Stadt transportiert, wo sie zu Ozon reagieren. Dagegen wird Ozon in Innenstädten durch die Reaktion von Stickstoffmonoxid (NO) aus Autoabgasen mit Ozon abgebaut. Deshalb ist die Ozonbelastung in Innenstädten, wo viele Autos fahren, deutlich niedriger.</p> <p>Aktuelle Werte und Prognosen für die nächsten zwei Tage gibt es <a href="https://www.umweltbundesamt.de/daten/luftbelastung/aktuelle-luftdaten#/start?_k=qb2zq1">hier</a> und in der <a href="https://www.umweltbundesamt.de/themen/luft/luftqualitaet/app-luftqualitaet">UBA-App "Luftqualität"</a>. Mit unsere App können Sie sich jederzeit über die zu erwartende Ozonbelastung informieren und bei erhöhten Werten automatisch warnen lassen. Je nach Höhe der Belastung gibt die App Gesundheitstipps für Aktivitäten im Freien. Die App ist kostenlos und werbefrei und für die Betriebssysteme iOS und Android erhältlich.</p> </p><p>Informationen für...</p>

Grundwassermessstelle DEGM_DENW_059620109: Friedrichstal Br.II

Stammdaten und Analysedaten zu den Grundwassermessstellen im EUA-Messnetz: Messtelle DEGM_DENW_059620109 (Friedrichstal Br.II)

SWIM Water Extent - Sentinel-1/2 - Daily

SWIM Water Extent is a global surface water product at 10 m pixel spacing based on Sentinel-1/2 data. The collection contains binary layers indicating open surface water for each Sentinel-1/2 scene. Clouds and cloud shadows are removed using ukis-csmask (see: https://github.com/dlr-eoc/ukis-csmask ) and are represented as NoData. The water extent extraction is based on convolutional neural networks (CNN). For further information, please see the following publications: https://doi.org/10.1016/j.rse.2019.05.022 and https://doi.org/10.3390/rs11192330

Sentinel-5P TROPOMI – Ultraviolet Index (UVI), Level 3 – Global

UV Index (UVI) as derived from TROPOMI observations. The UVI describes the intensity of the solar ultraviolet radiation. Values around zero indicate low, values greater than 10 indicate very high UV exposure on the ground. The TROPOMI instrument onboard the Copernicus SENTINEL-5 Precursor satellite is a nadir-viewing, imaging spectrometer that provides global measurements of atmospheric properties and constituents on a daily basis. It is contributing to monitoring air quality and climate, providing critical information to services and decision makers. The instrument uses passive remote sensing techniques by measuring the top of atmosphere solar radiation reflected by and radiated from the earth and its atmosphere. The four spectrometers of TROPOMI cover the ultraviolet (UV), visible (VIS), Near Infra-Red (NIR) and Short Wavelength Infra-Red (SWIR) domains of the electromagnetic spectrum. The operational trace gas products generated at DLR on behave ESA are: Ozone (O3), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2), Formaldehyde (HCHO), Carbon Monoxide (CO) and Methane (CH4), together with clouds and aerosol properties. This product is created in the scope of the project INPULS. It develops (a) innovative retrieval algorithms and processors for the generation of value-added products from the atmospheric Copernicus missions Sentinel-5 Precursor, Sentinel-4, and Sentinel-5, (b) cloud-based (re)processing systems, (c) improved data discovery and access technologies as well as server-side analytics for the users, and (d) data visualization services.

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