Elemental mercury in the atmospheric boundary layer of the Atlantic Ocean during Polarstern cruise ANT-XXV/5

• Main Authors: Kuss, Joachim, Schneider, Bernd
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: ALTITUDE; ANT-XXV/5; Atlantic Ocean; atmospheric boundary layer; Atmospheric measurements; BARO; Barometer; Calculated; DATE/TIME; Elemental mercury; Humidity; relative; HYGRO; Hygrometer; LATITUDE; LONGITUDE; Mercury; Mercury vapour analyzer; Tekran; 2537A; Polarstern; Pressure; atmospheric; PS73; PS73/5_0_Underway-2; PS73/5_0_Underway-4; Ship Weather Station; SWEAS; Temperature; air; Thermometer; UAS; Underway air sampling; Berichte zur Polar- und Meeresforschung; Reports on Polar and Marine Research
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.961667; https://doi.org/10.1594/PANGAEA.961667

During Polarstern cruise ANT-XXV/5 in April/May 2009, the marine atmosphere was sampled via PTFE (Polytetrafluorethylen) tubing extending from the front of the upper deck to labs on the main deck of r/v Polarstern and then analyzed for elemental mercury in air (Hg0-air) using the same Tekran 2537A as for Hg0-water measurements. The time interval of Hg0-air measurements was 5-min with gaps of about 20 min each hour because of intermittent Hg0-water measurements. The data were checked for potential contamination during tailwind situations (relative wind speed and direction) and doubtful values were removed. The detection limit was 0.1 ng L-1 (on ANT-XXV/5: 5 times the Hg0-air values were below the detection limit).