Long-term CCNC measurements at the central European ACTRIS research station Melpitz, Germany, 2012-2016


Atmospheric aerosol measurements were conducted at the Melpitz observatory, Germany. The data was collected during 2012 to 2016, measured by Droplet Measurement Technologies Cloud Condensation Nucleus Counter (DMT-CCNC).

Columns #9-12 contain the fit parameters "D_c", "a", "b" and "sigma_s" of following sigmoid function, where "AF" means activated fraction of aerosol particles, "a" and "b" are the lower and upper limits of the sigmoid function, "D_c" is the critical diameter of dry particles, and "sigma_s" means the shape of the sigmoid function:AF = a + b / ( 1 + exp(-(D-D_c)/sigma_s) )Column #15: The ratio "(D75-D25)/D50" represents the degree of external mixing of aerosol particles. The definations of D75, D50, D25, DX are the diameter (D) at which 75%, 50%, 25, X% of particles are activated at the given supersaturation condition. See Jurányi et al. (2013, doi:10.5194/acp-13-6431-2013) for details.Columns #16-61 contain the particle size distribution for 46 size bins. The mid-diameter of each bin (i.e. the geometric mean of the bin interval) is given in the Parameter Comment.

DOI https://doi.org/10.1594/PANGAEA.938213
Related Identifier https://doi.org/10.1594/PANGAEA.938215
Related Identifier https://doi.org/10.5194/acp-13-6431-2013
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.938213
Creator Wang, Yuan ORCID logo; Henning, Silvia ORCID logo; Poulain, Laurent ORCID logo; Stratmann, Frank ORCID logo; Herrmann, Hartmut ORCID logo; Wiedensohler, Alfred (ORCID: 0000-0001-8298-491X)
Publisher PANGAEA
Publication Year 2021
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 2732511 data points
Discipline Chemistry; Natural Sciences
Spatial Coverage (12.930 LON, 51.530 LAT)
Temporal Coverage Begin 2012-08-17T10:50:00Z
Temporal Coverage End 2016-10-20T08:48:00Z