Puijo SMEAR IV Kuopio Particle size distribution (DMPS), total inlet (SmartSMEAR)
Date
2017-06-29Author(s)
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URN:NBN:fi-fe201704065972Metadata
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Finnish Meteorological Institute (FMI), Atmospheric Research Centre of Eastern Finland. University of Eastern Finland (UEF), Department of Applied Physics, Aerosol Physics group. Jorma Joutsensaari, University of Eastern Finland (UEF), Department of Applied Physics. Mika Komppula, Finnish Meteorological Institute (FMI), Atmospheric Research Centre of Eastern Finland. , Puijo SMEAR IV Kuopio Particle size distribution (DMPS), total inlet (SmartSMEAR), 2017, URN:NBN:fi-fe201704065972.Licensed under
Abstract
Particle size distribution data measured with a differential mobility particle sizer (DMPS) through a total (tot) inlet at Puijo SMEAR IV station in Kuopio, Finland. Data stored in CSC “smear” database, “PUI_dmps_tot” table. It includes the following variables (valiable_name: description; [unit]):
* samptime: Sample time (UTC +2); [yyyy-mm-dd HH:MM:SS]
* mtime: Time in Matlab time number (UTC+2); []
* quality: Quality parameter; []
* sizerange_id: Size range ID (diamaters in PUI_dmps_sizeranges); []
* ntot: Total particle concentration ; [#/cm3]
* ch01: Particle concentration dN/dlogDp Ch01; [#/cm3]
* ch02: Particle concentration dN/dlogDp Ch02; [#/cm3]
* ch03: Particle concentration dN/dlogDp Ch03; [#/cm3]
* ch04: Particle concentration dN/dlogDp Ch04; [#/cm3]
* ch05: Particle concentration dN/dlogDp Ch05; [#/cm3]
* ch06: Particle concentration dN/dlogDp Ch06; [#/cm3]
* ch07: Particle concentration dN/dlogDp Ch07; [#/cm3]
* ch08: Particle concentration dN/dlogDp Ch08; [#/cm3]
* ch09: Particle concentration dN/dlogDp Ch09; [#/cm3]
* ch10: Particle concentration dN/dlogDp Ch10; [#/cm3]
* ch11: Particle concentration dN/dlogDp Ch11; [#/cm3]
* ch12: Particle concentration dN/dlogDp Ch12; [#/cm3]
* ch13: Particle concentration dN/dlogDp Ch13; [#/cm3]
* ch14: Particle concentration dN/dlogDp Ch14; [#/cm3]
* ch15: Particle concentration dN/dlogDp Ch15; [#/cm3]
* ch16: Particle concentration dN/dlogDp Ch16; [#/cm3]
* ch17: Particle concentration dN/dlogDp Ch17; [#/cm3]
* ch18: Particle concentration dN/dlogDp Ch18; [#/cm3]
* ch19: Particle concentration dN/dlogDp Ch19; [#/cm3]
* ch20: Particle concentration dN/dlogDp Ch20; [#/cm3]
* ch21: Particle concentration dN/dlogDp Ch21; [#/cm3]
* ch22: Particle concentration dN/dlogDp Ch22; [#/cm3]
* ch23: Particle concentration dN/dlogDp Ch23; [#/cm3]
* ch24: Particle concentration dN/dlogDp Ch24; [#/cm3]
* ch25: Particle concentration dN/dlogDp Ch25; [#/cm3]
* ch26: Particle concentration dN/dlogDp Ch26; [#/cm3]
* ch27: Particle concentration dN/dlogDp Ch27; [#/cm3]
* ch28: Particle concentration dN/dlogDp Ch28; [#/cm3]
* ch29: Particle concentration dN/dlogDp Ch29; [#/cm3]
* ch30: Particle concentration dN/dlogDp Ch30; [#/cm3]
* ch31: Particle concentration dN/dlogDp Ch31; [#/cm3]
* ch32: Particle concentration dN/dlogDp Ch32; [#/cm3]
* ch33: Particle concentration dN/dlogDp Ch33; [#/cm3]
* ch34: Particle concentration dN/dlogDp Ch34; [#/cm3]
* ch35: Particle concentration dN/dlogDp Ch35; [#/cm3]
* ch36: Particle concentration dN/dlogDp Ch36; [#/cm3]
* ch37: Particle concentration dN/dlogDp Ch37; [#/cm3]
* ch38: Particle concentration dN/dlogDp Ch38; [#/cm3]
* ch39: Particle concentration dN/dlogDp Ch39; [#/cm3]
* ch40: Particle concentration dN/dlogDp Ch40; [#/cm3]
Webpage for the data: https://avaa.tdata.fi/web/smart/smear.
Open API query for the data (e.g. year 2006): https://avaa.tdata.fi/smear-services/smeardata.jsp?table=PUI_dmps_tot&from=2006-01-01+00:00:00.000&to=2006-12-31+23:59:59.999&quality=ANY&averaging=NONE&type=NONE&variables=mtime,quality,sizerange_id,ntot,ch01,ch02,ch03,ch04,ch05,ch06,ch07,ch08,ch09,ch10,ch11,ch12,ch13,ch14,ch15,ch16,ch17,ch18,ch19,ch20,ch21,ch22,ch23,ch24,ch25,ch26,ch27,ch28,ch29,ch30,ch31,ch32,ch33,ch34,ch35,ch36,ch37,ch38,ch39,ch40
Size distributions have been measured using different diameter ranges at different periods:
1. from 10 to 500 nm, 30 channels, 2.6.2006 - 31.3.2007
2. from 7 to 800 nm, 40 channels, 1.4.2007 - 31.1.2012
3. from 3 to 800 nm, 40 channels, from 1.2.2012
Particle diameters for different size bins were stored in “PUI_dmps_sizeranges” table. Variable “sizerange_id” in PUI_dmps_int/tot tables tells which size range should be used. Particle diameters can be fetched by API query (id=n, n is number of the size range period): https://avaa.tdata.fi/smart-smear-portlet/PUI_dmps_sizeranges.jsp?id=3
Interstitial (int) and total (tot) inlets:
Sample air for the instruments is drawn through two parallel sampling lines: interstitial (int) and total (tot) inlets:
* interstitial inlet (int) is equipped with an impactor with a 10-µm cut-off size followed by a cyclone with a 1.0-µm cut-off size (2.5 µm before 20 November 2009)
* total air inlet (total) with heated sampling lines and snow-hood to dry the cloud droplets (cut-off size 40 µm when the wind speed is below 20 m/s)
This two-inlet setup enables simultaneous interstitial and total air (interstitial + cloud drop residual) measurements when the tower is covered by clouds.
The size of data: ca. 12 MB/year, totally ca. 120 MB.