ALBERT

Description: This dataset provides 37 CTD profiles measured on board of the German R/V Sonne (cruise SO269) in the northern South China Sea, under the project SOCLIS – South China Sea Natural Laboratory under Climatic and Anthropogenic Stress, in August and September 2019. The 37 profiles of temperature, salinity, dissolved oxygen, fluorescence, turbidity, surface irradiance (SPAR) and Photosynthetically active radiation (PAR), and sound velocity were measured using a CTD Sea-Bird SBE 911 plus, together with oxygen sensor (SBE 43), PAR sensor (Biospherical, QCP-2350 + QSR-2200), and a fluorometer (WET Labs ECO-FLNTU(RT)D). Additionally, dissolved oxygen, potential temperature and sigma-theta (with reference to the surface) were calculated. The 37 additional CTD files complement the physical oceanography dataset (Waniek et al., 2021).

Description: Ice rich Yedoma-dominated landscapes store considerable amounts of organic carbon (C) and nitrogen (N) and are vulnerable to degradation under climate warming. We investigate the C and N pools in two thermokarst-affected Yedoma landscapes - on Sobo-Sise Island and on Bykovsky Peninsula in the North of East Siberia. Soil cores up to three meters depth were collected along geomorphic gradients and analysed for organic C and N contents. A high vertical sampling density in the profiles allowed the calculation of C and N stocks for short soil column intervals and enhanced understanding of within-core parameter variability. Profile-level C and N stocks were scaled to the landscape level based on landform classifications from five-meter resolution, multispectral RapidEye satellite imagery. Mean landscape C and N storage in the first meter of soil for Sobo-Sise Island is estimated to be 20.2 kg C/m**-2 and 1.8 kg N/m**-2 and for Bykovsky Peninsula 25.9 kg C/m**-2 and 2.2 kg N/m**-2. Radiocarbon dating demonstrates the Holocene age of thermokarst basin deposits but also suggests the presence of thick Holocene aged cover layers which can reach up to two meters on top of intact Yedoma landforms. Reconstructed sedimentation rates of 0.10 mm/yr - 0.57 mm/yr suggest sustained mineral soil accumulation across all investigated landforms. Both Yedoma and thermokarst landforms are characterized by limited accumulation of organic soil layers (peat). We further estimate that an active layer deepening by about 100 cm will increase organic C availability in a seasonally thawed state in the two study areas by ~5.8 Tg (13.2 kg C/m**-2). Our study demonstrates the importance of increasing the number of C and N storage inventories in ice-rich Yedoma and thermokarst environments in order to account for high variability of permafrost and thermokarst environments in pan-permafrost soil C and N pool estimates.

Description: This dataset provides 131 CTD profiles measured on board of the German R/V Sonne (cruise SO269) in the northern South China Sea, under the project SOCLIS – South China Sea Natural Laboratory under Climatic and Anthropogenic Stress, in August and September 2019. The 131 profiles of temperature, salinity, dissolved oxygen, fluorescence, turbidity, surface irradiance (SPAR) and Photosynthetically active radiation (PAR), and sound velocity were measured using a CTD Sea-Bird SBE 911 plus, together with oxygen sensor (SBE 43), PAR sensor (Biospherical, QCP-2350 + QSR-2200), and a fluorometer (WET Labs ECO-FLNTU(RT)D). Additionally, oxygen saturation, potential temperature and sigma-theta (with reference to the surface) were calculated. The 131 CTD profiles are distributed by 81 stations and aim to study the impact of a growing anthropogenic pressure around the Pearl River Estuary into the northern shelf of the South China Sea towards the deep sea. The dataset was used to study the presence and spatial distribution of natural and synthetic estrogenic compounds and pharmaceutical and personal care products (PPCPs) in the Pearl River Estuary and northern shelf of the South China Sea.

Description: This set provides 68 CTD profiles of temperature, conductivity, dissolved oxygen, fluorescence, turbidity, Surface Photosynthetically Active Radiation (SPAR) and sound velocity measured on board the Chinese R/V Hai Yang Di Zhi Shi Hao in September 2018, in the northern South China Sea, within the project Megacity's fingerprint in Chinese marginal seas: Investigation of pollutant fingerprints and dispersal. Additionally, oxygen saturation, salinity, potential temperature and potential density are also provided. The dataset was used to study the presence and spatial distribution of natural and synthetic estrogenic compounds and pharmaceutical and personal care products (PPCPs) in the Pearl River Estuary and northern shelf of the South China Sea.

Description: This set provides 19 CTD profiles of temperature, salinity, dissolved oxygen, fluorescence, turbidity and sound velocity measured on board of the German R/V Poseidon in May 2012, in the Madeira basin region, Northeast Atlantic. We aimed to study the physical and biogeochemical conditions of the water column along the 22°W meridian, north and south of the Azores Front. The biogeochemical data associated to this dataset can be found in doi:10.1594/PANGAEA.946626

Description: UK'37 and -derived SST estimates of sediment core SO256_30-1 (GeoB22230-1). Sample preparation and measurements were done at the German Federal Institute for Geosciences and Natural Resources in Hannover. UKʹ37 was converted to temperature using the temperature calibration of Prahl et al. (1988; doi:10.1016/0016-7037(88)90132-9).

Description: During research cruise MSM99/2 (26/03/2021-05/04/2021) eleven hydro-casts (SBE9plus-CTD measurements) were performed in two different working areas located north and south-east of Helgoland, North Sea. The main aim was to characterize the water column above a giant pockmark field north of Helgoland. For each CTD cast the following data were recorded: Time (UTC), latitude (°N), longitude (°W), water depth (m), pressure (db), temperature (°C), salinity, oxygen (µmol L-1), oxygen (sat., %), turbidity (FTU), sound velocity (Chen-Millero, m s-1), light intensity (PAR, µmol photons m-2 s-1), fluorescence (a.u.)

Description: This set provides 68 CTD profiles of temperature, conductivity, dissolved oxygen, fluorescence, turbidity, Surface Photosynthetically Active Radiation (SPAR) and sound velocity measured on board the Chinese R/V Hai Yang Di Zhi Shi Hao in September 2018, in the northern South China Sea, within the project Megacity's fingerprint in Chinese marginal seas: Investigation of pollutant fingerprints and dispersal. Additionally, oxygen saturation, salinity, potential temperature and potential density are also provided. The dataset was used to study the presence and spatial distribution of natural and synthetic estrogenic compounds and pharmaceutical and personal care products (PPCPs) in the Pearl River Estuary and northern shelf of the South China Sea.

Description: This set provides 68 CTD profiles of temperature, conductivity, dissolved oxygen, fluorescence, turbidity, Surface Photosynthetically Active Radiation (SPAR) and sound velocity measured on board the Chinese R/V Hai Yang Di Zhi Shi Hao in September 2018, in the northern South China Sea, within the project Megacity's fingerprint in Chinese marginal seas: Investigation of pollutant fingerprints and dispersal. Additionally, oxygen saturation, salinity, potential temperature and potential density are also provided. The dataset was used to study the presence and spatial distribution of natural and synthetic estrogenic compounds and pharmaceutical and personal care products (PPCPs) in the Pearl River Estuary and northern shelf of the South China Sea.