Four open datasets of atmospheric ion and aerosol measurements
Four open datasets of atmospheric ion and aerosol measurements
Hannes.Tammet@ut.ee
with acknowledgements to colleagues
providing the data for open access datasets
The DataCite global consortium
(https://www.datacite.org) supports
archiving of research data and helps to assign to datasets digital object
identifiers (DOI). This opportunity is
used uploading datasets of atmospheric ion and aerosol measurements to
a safe repository and making the data
accessible for everybody.
ATMEL2007A
► http://dx.doi.org/10.15155/repo-1 FinEstIon2003_06
► http://dx.doi.org/10.15155/repo-4 Hyytiala08_10aerosol
► http://dx.doi.org/10.15155/repo-3 Nanoion2010_11
► http://dx.doi.org/10.15155/repo-2
Today only small part of information available in
these datasets is utilized in the aerosol
1. ATMEL2007A
Preliminary version was presented in Pikajärve workshop 2005.
Publication: Tammet, H. (2009). A joint dataset of fair-weather atmospheric electricity. Atmos. Res., 91, 194–200.
The amount of included hourly average values is about 12,000,000.
A focus for aerosol research is the subset of measurements from 1 August 1972 to 31 December 1983 on Wank Peak, a.s.l. 1780 m.
The measurements were arranged by the Director of the Fraunhofer Institute of Atmospheric Environment at Garmisch-Partenkirchen Dr. Reinhold Reiter.
Wank data include hourly averages of CN concentrations routinely recorded using General Electric CNC (designed by T.A. Rich)
equipped with automatically commutable diffusion battery. CN concentration was recorded: 1without diffusion battery, 2with electrically neutral diffusion battery, and 3with charged diffusion battery. Other recorded quantities are concentrations of air ions, concentration of NOx, UV-radiation and total radiation, etc.
2007 July
ATMEL2007A tablemaker
DataCite version of ATMEL2007A includes a new tool: the Tablemaker.
It allows extract Excel tables much easier than the universal tool called the DataDiurna data manager. Additionally, all data are presented simultaneously as a DataDiurna diary and as seven large Excel tables.
EXAMPLE:
1. Prepare description of the table as a text file table_description.txt ---
1: Wank_78_83.xls
2: 19780101 19831231 3: -999
CNR1:cm-3@Wank CNR2:cm-3@Wank NOX:ug/m3@Wank Rad:W/m2@Wank UV:mW/m2@Wank
2. Drag table_description.txt onto the icon of ATMEL2007tablemaker.exe
Hour CNR1 CNR2 NOX Rad UV
6 955 700 1.1 0 0
7 945 695 1.1 0 0
8 960 705 1.1 0 0.12
9 1060 745 1.2 42 0.79
10 1060 755 1.1 151 2.38
11 1310 890 1.1 236 3.85
12 1825 1065 1.2 252 4.18
13 2065 1075 0.9 237 3.54
14 2050 995 0.7 196 2.24
15 1830 855 0.8 113 0.9
16 1425 685 0.9 29 0.16
17 1090 550 0.9 0 0
An excerpt from the result:
Calculate:
CN-coarse = CNR2
CN-fine = CNR1 – CNR2 UV/Rad = 1000 * UV / Rad
600 900 1200 1500 1800
5 6 7 8 9 10 11 12 13 14 15 16 UV/Rad
CN, cm-3
CN-fine CN-coarse
2. FinEstIon2003_06
Contains air ion mobility and fine nanoparticle size distribution measurements in Hyytiälä, Tahkuse. Preliminary version of the dataset was presented in Pühajärve workshop 2007.
For DataCite repository the dataset was converted into a large Excel table Finestion.xls and accompanied witha new tool Finestractor.exe (why?)
Finestion.xls is a text file, where every data line presents
measurements for a 10-minute period. All possible periods are saved without any omission for all 4 years. The number of hours during four years is (365 + 366 + 355 + 355) × 24 = 35064 and number of 10-minute periods is 210384. Thus the file consist 210385 text lines, where the first line is the header. Every line
contains 273 tab-delimited words. The words of the header are the
brief names of variables and the words of following lines are values
of the variables.
FinEstIon2003_06
In addition to the numerical table, the dataset contains a subset of diagrams for measurements in Tartu. Excerpt from the index:
A diagram:
3. Hyytiala08_10aerosol
Introduced in the paper Tammet, H., Kulmala, M. (2014). Empiric equations of coagulation sink of fine nanoparticles on background aerosol optimized for boreal zone. Boreal Environ. Res., 19, 115–126.
Contains results of routine measurements during 3 years of 2008–2010. The particle size range from 3 nm to 15μm is split into 60 fractions and the records of distribution function are presented for 21682 hours of measurements.
The dataset includes three files:
Data_Hyytiala08_10aerosol.xls – a table, which contains 60 columns of the particle size distribution and 30 columns of complementary variables.
Description_Hyytiala08_10aerosol.pdf – detailed description of origin and
structure the data. Additionally includes sample diagrams, which illustrate the data and may provoke new ideas for studies on atmospheric aerosol.
Package_Hyytiala08_10aerosol.zip – a compressed package, which contains both the data file and the description file. The package is to be downloaded to a personal computer, unzipped and used offline.
Mean size distributions d d dN d
k
lg nm
100
Diurnal variation
Weekly variation
4. Nanoion2010_11
Described in the paper Tammet, H., Komsaare, K., Hõrrak, U. (2014).
Intermediate ions in the atmosphere. Atmos. Res., 135&136, 263–273.
Includes results of a measurement campaign started at 1 April 2010 and finished at 8 November 2011.
The instrument SIGMA is described in the paper Tammet, H. (2011).
Symmetric inclined grid mobility analyzer for the measurement of charged clusters and fine nanoparticles in atmospheric air.
Aerosol Sci. Technol., 45, 468–479.
The author acknowledges Kaupo Komsaare for taking care of the
instrument, Sander Mirme for presenting the meteorological data, and Urmas Hõrrak for general arrangements and discussions.
The high-quality measurements cover 7647 hours, which is about 54%
of the full 587 day measurement period.
Full period average
Full period average
Includes contour plots for 147 days, which satisfy the requirements:
uninterrupted diurnal set of 288 five-minute records,
no considerable disturbances and low instrumental noise.
Noise: excerpt from Hyytiälä SMPS measurements (for comparison)
Hour / nm 2.9 3.4 3.9 4.5 5.2 6.0
11 0 0 0 5 36 11
12 0 0 0 3 18 6
13 0 0 7 26 62 52
14 0 0 8 21 10 8
15 98 40 0 7 44 30
16 0 0 13 35 30 30
17 0 0 8 20 2 53
18 0 21 57 82 25 38
19 49 36 29 39 76 126
20 0 0 7 38 128 185
21 0 0 3 23 96 185
22 0 16 25 23 36 113
23 0 0 0 8 50 142
Noise: excerpt from SIGMA measurements (20110318, + ions)
Hour / nm 0.49 0.65 0.87 1.16 1.54 2.05 2.74 3.65 4.87 6.50
7 493 742 1039 566 145 59 38 39 44 51
8 417 645 946 651 430 323 210 122 60 50
9 439 678 979 680 451 354 296 290 329 232 10 389 605 895 579 310 271 278 326 518 715 11 401 594 816 493 268 216 242 327 554 772 12 430 627 848 470 214 157 154 198 338 553 13 438 670 909 496 188 121 112 149 198 279
14 462 720 960 491 129 66 48 58 87 143
15 482 734 963 443 82 29 29 34 59 110
16 479 738 942 398 52 16 22 30 68 155
17 471 737 952 401 47 18 16 26 60 161
18 452 709 941 427 75 15 12 18 37 87
19 449 726 973 437 68 20 19 18 35 58
