Citation:

PANGAEA.938215

Name: Long-term CCNC measurements at the central European ACTRIS research station Melpitz, Germany, 2012-2016
Published: 2021-11-15
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Aerosol chemistry; Cloud Concensation Nuclei; Particle Number Size Distribution (PNSD)

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Published: 2021-11-15 • DOI registered: 2021-12-15

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Abstract:

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).

Keyword(s):

Aerosol chemistry; Cloud Concensation Nuclei; Particle Number Size Distribution (PNSD)

Further details:

Jurányi, Zsófia; Tritscher, T; Gysel, Martin; Laborde, M; Gomes, Luciene; Roberts, Gareth; Baltensperger, Urs; Weingartner, Ernest (2013): Hygroscopic mixing state of urban aerosol derived from size-resolved cloud condensation nuclei measurements during the MEGAPOLI campaign in Paris. Atmospheric Chemistry and Physics, 13(13), 6431-6446, https://doi.org/10.5194/acp-13-6431-2013

Coverage:

Latitude: 51.530000 * Longitude: 12.930000

Date/Time Start: 2012-08-17T10:50:00 * Date/Time End: 2016-10-20T08:48:00

Event(s):

Melpitz_obs * Latitude: 51.530000 * Longitude: 12.930000 * Method/Device: Research station (RS)

Comment:

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.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DATE/TIME	Date/Time		Wang, Yuan		Geocode – UTC start time
2	Supersaturation	SS	%	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	supersaturation setting in CCNC
3	Cloud condensation nuclei	CCN conc	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	calculated from activation fraction (AF) curve
4	Cloud condensation nuclei	CCN conc	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	calculated from critical diameter (dc)
5	Condensation nuclei	CN conc	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	total aerosol number concentration
6	Condensation nuclei	CN conc	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	aerosol number concentration with diameter > 80 nm
7	Condensation nuclei	CN conc	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	aerosol number concentration with diameter > 110 nm
8	Hygroscopicity	kappa		Wang, Yuan		kappa_ccn, aerosol hygroscopicity parameter calculated from monodisperse CCN measurements
9	Critical diameter	Dcrit	nm	Wang, Yuan		sigmoid_param_x_adjust(Dcrit), the critical diameter 'D_c' calculated from the AF sigmoid fitting, unit: nm
10	Parameter	Parameter	arbitrary units	Wang, Yuan		sigmoid_param_tresh_bottom, the parameter 'a' in the AF sigmoid fitting, unit: dimensionless
11	Parameter	Parameter	arbitrary units	Wang, Yuan		sigmoid_param_tresh_top, the parameter 'b' in the AF sigmoid fitting, unit: dimensionless
12	Parameter	Parameter	arbitrary units	Wang, Yuan		sigmoid_param_slope_ind, the parameter 'sigma_s' in the AF sigmoid fitting, unit: nm
13	Number	No		Wang, Yuan		scan number
14	Quotient	Quotient		Wang, Yuan		sigma_s/D_c, ratio of 'sigma_s' in the AF sigmoid fitting to critical diameter 'D_c'
15	Quotient	Quotient		Wang, Yuan		(D75-D25)/D50
16	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	5.096 nm
17	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	5.702 nm
18	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	6.38 nm
19	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	7.139 nm
20	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	7.987 nm
21	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	8.937 nm
22	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	10 nm
23	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	11.189 nm
24	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	12.52 nm
25	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	14.009 nm
26	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	15.674 nm
27	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	17.538 nm
28	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	19.624 nm
29	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	21.958 nm
30	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	24.569 nm
31	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	27.49 nm
32	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	30.759 nm
33	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	34.417 nm
34	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	38.51 nm
35	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	43.089 nm
36	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	48.213 nm
37	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	53.946 nm
38	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	60.361 nm
39	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	67.539 nm
40	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	75.57 nm
41	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	84.557 nm
42	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	94.612 nm
43	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	105.863 nm
44	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	118.451 nm
45	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	132.537 nm
46	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	148.297 nm
47	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	165.932 nm
48	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	185.664 nm
49	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	207.742 nm
50	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	232.446 nm
51	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	260.087 nm
52	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	291.016 nm
53	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	325.622 nm
54	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	364.343 nm
55	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	407.669 nm
56	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	456.147 nm
57	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	510.389 nm
58	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	571.082 nm
59	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	638.993 nm
60	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	714.978 nm
61	Aerosol number concentration	CP	#/cm³	Wang, Yuan	Cloud Condensation Nuclei Counter (CCNC)	800 nm

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

2732511 data points

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