Ice-nucleating particle concentration measurements from Ny-Ålesund during the Arctic spring–summer in 2018

• Published in: Atmospheric Chemistry and Physics
• Main Authors: M. Rinaldi, N. Hiranuma, G. Santachiara, M. Mazzola, K. Mansour, M. Paglione, C. A. Rodriguez, R. Traversi, S. Becagli, D. Cappelletti, F. Belosi
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2021
• Subjects: Physics; QC1-999; Chemistry; QD1-999; Arctic; Svalbard; Ny-Ålesund; Ny Ålesund
• Online Access: https://doi.org/10.5194/acp-21-14725-2021; https://doaj.org/article/60a99ca85b974293bd87518a3f5d78a2

In this study, we present atmospheric ice-nucleating particle (INP) concentrations from the Gruvebadet (GVB) observatory in Ny-Ålesund (Svalbard). All aerosol particle sampling activities were conducted in April–August 2018. Ambient INP concentrations ( n INP) were measured for aerosol particles collected on filter samples by means of two offline instruments: the Dynamic Filter Processing Chamber (DFPC) and the West Texas Cryogenic Refrigerator Applied to Freezing Test system (WT-CRAFT) to assess condensation and immersion freezing, respectively. DFPC measured n INPs for a set of filters collected through two size-segregated inlets: one for transmitting particulate matter of less than 1 µm (PM 1 ), the other for particles with an aerodynamic diameter of less than 10 µm aerodynamic diameter (PM 10 ). Overall, n INP <math xmlns="http://www.w3.org/1998/Math/MathML" id="M8" display="inline" overflow="scroll" dspmath="mathml"><msub><mi/><mrow><msub><mi mathvariant="normal">PM</mi><mn mathvariant="normal">10</mn></msub></mrow></msub></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="21pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="1bed5e190fcfd3954e7ac4cd885e2f62"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-21-14725-2021-ie00001.svg" width="21pt" height="10pt" src="acp-21-14725-2021-ie00001.png"/></svg:svg> measured by DFPC at a water saturation ratio of 1.02 ranged from 3 to 185 m −3 at temperatures ( T s) of −15 to −22 ∘ C. On average, the super-micrometer INP ( n INP <math xmlns="http://www.w3.org/1998/Math/MathML" id="M15" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi/><mrow><msub><mi mathvariant="normal">PM</mi><mn mathvariant="normal">10</mn></msub></mrow></msub><mo>-</mo><mi>n</mi></mrow></math> <svg:svg ...