Published August 22, 2023 | Version v1
Dataset Open

Data and code for "Long-term aerosol particle depolarization ratio measurements with Halo Doppler lidar" by Viet Le et al. (2023)

Creators

  • 1. Finnish Meteorological Institute

Description

Processing code and datasets used for creating the figures in "Long-term aerosol particle depolarization ratio measurements with Halo Doppler lidar".

Table of contents

DopplerLidarData_location.tar.gz: 4 archive files (in tar.gzipped format) containing Halo Doppler lidar, one for each location, with each archive file containing daily files which are in the self-describing netCDF format. Note that the archive for Hyytiälä contains Doppler lidar data from 2 instruments operated at different times. The instrument serial number (id) is present in the netCDF file name and in the global attributes within in each netCDF file. WeatherStationData.tar.gz: archive file (in tar.gzipped format) containing weather station data for each location in 6-monthly CSV files with the following columns (in Finnish) Vuosi,Kk,Pv,Klo,Aikavyöhyke,Pilvien määrä (1/8),Suhteellinen kosteus (%),Sateen intensiteetti (mm/h),Ilman lämpötila (degC) which translate in English as Year, Month, Day, Time, Timezone, Cloud cover (oktas), Relative humidity (%), Precipitation intensity (mm hr-1), Air temperature (degrees Celsius) HaloDopplerLidar-AerosolIdentification-main.zip: archive file (in zip format) containing the version of the "Halo Doppler lidar Aerosol Identification Algorithm" processing code used to generate the products in the manuscript. The latest version of this code is also available in Github (https://github.com/vietle94/HaloDopplerLidar-AerosolIdentification).

Files

HaloDopplerLidar-AerosolIdentification-main.zip

Files (5.0 MB)

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Checksum: md5:39c1664d8f67953aa338b03af278cd8f

PID: http://hdl.handle.net/11304/a77cb52b-ba67-4bfc-b063-24593d76f5e1
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Additional details

Identifiers

URL
https://etsin.fairdata.fi/dataset/45ae3cb7-3f23-408c-9a00-30497fd9074f
b2rec
f82603e69cea49b888f94d0e8a85e787

Instruments

Halo Doppler lidar (Streamline, Streamline XR and Streamline Pro versions)
Halo Photonics (Other)

FMI metadata

Link to external data location (URL)
https://manuscript-data.lake.fmi.fi/Le_etal_2024/DopplerLidarData_Hyytiala.tar.gz, https://manuscript-data.lake.fmi.fi/Le_etal_2024/DopplerLidarData_Uto.tar.gz, https://manuscript-data.lake.fmi.fi/Le_etal_2024/DopplerLidarData_Sodankyla.tar.gz, https://manuscript-data.lake.fmi.fi/Le_etal_2024/DopplerLidarData_Vehmasmaki.tar.gz
Process step
Weather station data. No additional quality control or processing applied , Doppler lidar data. Background correction applied (Vakkari et al., 2019)
Parameter
  • Parameter name: Vuosi
  • Parameter unit: Year
  • Parameter description: Year
  • Parameter name: kk
  • Parameter unit: Month
  • Parameter description: Month
  • Parameter name: Pv
  • Parameter unit: Day
  • Parameter description: Day
  • Parameter name: Klo
  • Parameter unit: hours:minutes
  • Parameter description: Time
  • Parameter name: Aikavyöhyke,
  • Parameter description: Timezone
  • Parameter name: Pilvien määrä
  • Parameter unit: okta
  • Parameter description: Cloud cover
  • Parameter name: Suhteellinen kosteus
  • Parameter unit: percent
  • Parameter description: Relative humidity
  • Parameter name: Sateen intensiteetti
  • Parameter unit: mm hr-1
  • Parameter description: Precipitation intensity
  • Parameter name: Ilman lämpötila
  • Parameter unit: degrees Celsius
  • Parameter description: Air temperature
  • Parameter name: time
  • Parameter unit: hours since 2017-10-09 00:00:00 +0:00
  • Parameter description: Decimal hours UTC
  • Parameter name: time_averaged
  • Parameter unit: hours since 2017-10-09 00:00:00 +0:00
  • Parameter description: Decimal hours UTC
  • Parameter name: range
  • Parameter unit: m
  • Parameter description: Height above ground
  • Parameter name: beta_raw
  • Parameter unit: m-1 sr-1
  • Parameter description: Attenuated backscatter (raw)
  • Parameter name: v_raw
  • Parameter unit: m s-1
  • Parameter description: Radial velocity (positive away from lidar)
  • Parameter name: v_error
  • Parameter unit: m s-1
  • Parameter description: Uncertainty in velocity estimate
  • Parameter name: co_signal
  • Parameter description: Co-channel signal (raw)
  • Parameter name: cross_signal
  • Parameter description: Cross-channel signal (raw)
  • Parameter name: depo_raw
  • Parameter description: Depolarization ratio (raw)
  • Parameter name: co_signal_averaged
  • Parameter description: Co-channel signal (raw), averaged
  • Parameter name: cross_signal_averaged
  • Parameter description: Cross-channel signal (raw), averaged
  • Parameter name: depo_averaged_raw
  • Parameter description: Depolarization ratio (raw), averaged
Topic category
climatologyMeteorologyAtmosphere

Temporal Coverage

Ranges:

Start date: 2015-12-31
End date: 2019-12-31

Locations

Utö, Finland Point:
(Lon: 59.77, Lat: 21.37 )

Vehmasmäki, Finland Point:
(Lon: 62.89, Lat: 27.63 )

Hyytiälä, Finland Point:
(Lon: 61.84, Lat: 24.29 )

Sodankylä, Finland Point:
(Lon: 67.37, Lat: 26.62 )