Helicopter borne probe HELiPOD measurements during MOSAiC - Flight 4 ...

• Main Authors: Pätzold, Falk, Bärfuss, Konrad, Bretschneider, Lutz, Schlerf, Andreas, Bollmann, Sven, Asmussen, Magnus Ole, Schwarting, Tom, Rausch, Thomas, Harm-Altstädter, Barbara, Käthner, Ralf, Pilz, Christian, Wehner, Birgit, Sperzel, Tim R, Jäkel, Evelyn, Düsing, Sebastian, Herber, Andreas, Wiekenkamp, Inge, Sachs, Torsten, Wendisch, Manfred, Lampert, Astrid
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: absorption; aerosol particle number concentration; Arctic; atmospheric boundary layer; helicopter borne probe; HELiPOD; meteorological parameters; MOSAiC expedition; surface properties; trace gas concentrations; DATE/TIME; LATITUDE; LONGITUDE; ALTITUDE; Altitude, barometric; HEIGHT above ground; Roll angle; Pitch angle; Heading; Velocity, north; Velocity, east; Velocity, down; Air speed; True air speed; Density, air; Wind velocity, west-east; Wind velocity, south-north; Wind velocity, vertical; Short-wave radiation; Long-wave radiation; Surface temperature; Temperature, air; Humidity, specific; Ozone; Carbon dioxide, mole fraction; Carbon dioxide; Methane, mole fraction; Methane; Particle light absorption coefficient at 624 nm wavelength; Particle light absorption coefficient at 525 nm wavelength; Particle light absorption coefficient at 450 nm wavelength; Aerosol number concentration; Helicopter towed system; INS/GNSS system, iMAR, iNAT-M200; Pressure sensor, Setra, 270; Radar altimeter, Thomson-CSF, ERT 180; Differential pressure sensor, Setra, 239; Differential pressure sensor, Setra, 239; Pressure sensor, Setra, 270; Temperature, air; Calculated, ideal gas equation; Calculated from the air speed vector and the ground speed vector according to Lenschow 1972
• Online Access: https://dx.doi.org/10.1594/pangaea.966362; https://doi.pangaea.de/10.1594/PANGAEA.966362

The helicopter borne probe HELiPOD was deployed during the MOSAiC expedition on Leg 3 and 4 from the research vessel Polarstern to investigate the ocean-ice-atmosphere exchange. During five flights, a variety of parameters were measured and calculated, concerning atmospheric dynamics (pressure, temperature, humidity, wind vector), aerosol particles (number concentrations in different size classes, absorption coefficients for three different wavelengths), trace gas concentrations (carbon dioxide, methane, ozone), radiation (solar and terrestrial, upward and downward), surface properties (temperature, images) as well as flight state parameters (position, altitude, attitude). All data were re-sampled at 100 Hz to the same time grid, if not indicated differently. The probe enabled the spatial extension of MOSAiC observations in a range of 25 – 60 km distance to Polarstern. After dedicated postprocessing of the complex data set, two out of the five flights, which were performed on 22 July 2020, and with a flight ...