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Dataset

 

Arctic Cloud Summer Expedition (ACSE): surface meteorology and radiation measurements from the Stockholm University's automatic weather station on board Icebreaker Oden

Update Frequency: Not Planned
Status: Final
Online Status: ONLINE
Publication State: Citable
Publication Date: 2018-04-14
Download Stats: last 12 months

Abstract

This dataset contains surface meteorological measurements including air temperature, relative humidity, surface irradiation and wind measurements from the Meteorologiska Institutionen Stockholms Universitet (MISU) weather station on board the Swedish Icebreaker Oden durning Arctic Cloud Summer Expedition (ACSE). ACSE took place in the Arctic during summer 2014. These measurements were used to complement a suite of other observations taken during the cruise. Those of the UK contribution, as well as selected other data, are available within the associated data collection in the Centre for Environmental Data Analysis (CEDA) archives. Other cruise data may be available in the NOAA ACSE and The Bolin Centre for Climate Research SWERUS (SWEdish-Russian-US) holdings - see online resources linked to this record.

These data came from an automatic weather station installed on the 7th deck of the Icebreaker Oden, approximately 25m above the surface, measuring at 1 Hz frequency. The system was operated by Joe Sedlar who also undertook data quality control and there are several flag variables for T/RH and radiation measurements documenting known data issues - notably when primary measurements have been replaced with those from other sensors, or corrections applied. This version of the dataset was then prepared for archiving with the Centre for Environmental Data Analysis by Ian Brooks, University of Leeds.

The Arctic Cloud Summer Expedition (ACSE) was a collaboration between the University of Leeds, the University of Stockholm, and NOAA-CIRES. ACSE aimed to study the response of Arctic boundary layer cloud to changes in surface conditions in the Arctic Ocean as a working package of the larger Swedish-Russian-US Investigation of Climate, Cryosphere and Carbon interaction (SWERUS-C3) Expedition in Summer 2014. This expedition was a core component to the overall SWERUS-C3 programme and was supported by the Swedish Polar Research Secretariat.

ACSE took place during a 3-month cruise of the Swedish Icebreaker Oden from Tromso, Norway to Barrow, Alaska and back over the summer of 2014. During this cruise ACSE scientists measured surface turbulent exchange, boundary layer structure, and cloud properties. Many of the measurements used remote sensing approaches - radar, lidar, and microwave radiometers - to retrieve vertical profiles of the dynamic and microphysical properties of the lower atmosphere and cloud.

The UK participation of ACSE was funded by the Natural Environment Research Council (NERC, grant: NE/K011820/1) and involved instrumentation from the Atmospheric Measurement Facility of the UK's National Centre for Atmospheric Science (NCAS AMF). This dataset collection contains data mainy from the UK contribution with some additional data from other institutes also archived to complement the suite of meteorological measurements.

Citable as:  Sedlar, J.A.; Tjernström, M. (2018): Arctic Cloud Summer Expedition (ACSE): surface meteorology and radiation measurements from the Stockholm University's automatic weather station on board Icebreaker Oden. Centre for Environmental Data Analysis, date of citation. doi:10.5285/0af02f899ac14c218706295d3c6d1c4d. http://dx.doi.org/10.5285/0af02f899ac14c218706295d3c6d1c4d
Abbreviation: Not defined
Keywords: temperature, relative humidity, winds, radiation

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data were collected, quality controlled and prepared for archiving by the instrument scientists before upload to the Centre for Environmental Data Analysis (CEDA) for long term archiving.

Data Quality:
Data quality were checked by the ACSE project data author before supplying to CEDA. Further information on quality may be available in related documentation.
File Format:
Data are CF-compliant netCDF formatted.

Related Documents

No documents related to this record were found.

Process overview

This dataset was generated by instruments deployed on platforms as listed below.
Output Description None
  • units: C
  • var_id: t
  • long_name: Air temperature (degC)
  • names: Air temperature (degC)
  • units: %
  • var_id: rh
  • long_name: Relative humidity (%)
  • names: Relative humidity (%)
  • units: W/m2
  • long_name: downwelling longwave (infra red) radiation (W/m2)
  • var_id: pir
  • names: downwelling longwave (infra red) radiation (W/m2)
  • units: W/m2
  • long_name: downwelling longwave clear sky (RRTM simulation)(W/m2)
  • var_id: lwdclr
  • names: downwelling longwave clear sky (RRTM simulation)(W/m2)
  • units: W/m2
  • long_name: downwelling shortwave (solar) radiation (W/m2)
  • var_id: psp
  • names: downwelling shortwave (solar) radiation (W/m2)
  • units: W/m2
  • long_name: downwelling shortwave clear sky (RRTM simulation)(W/m2)
  • var_id: swdclr
  • names: downwelling shortwave clear sky (RRTM simulation)(W/m2)
  • long_name: flag =1 indicates flow distortion correction applied to true wind speed
  • var_id: true_wspd_distort_corr_applied
  • names: flag =1 indicates flow distortion correction applied to true wind speed
  • long_name: flag indicating corrections to pir
  • var_id: pir_corflag
  • names: flag indicating corrections to pir
  • long_name: flag indicating corrections to psp
  • var_id: psp_corflag
  • names: flag indicating corrections to psp
  • long_name: flag indicating corrections to rh
  • var_id: rh_corflag
  • names: flag indicating corrections to rh
  • long_name: flag indicating corrections to t
  • var_id: t_corflag
  • names: flag indicating corrections to t
  • units: degrees
  • var_id: lat
  • long_name: latitude (deg)
  • names: latitude (deg)
  • units: degrees
  • var_id: lon
  • long_name: longitude (deg)
  • names: longitude (deg)
  • units: W/m2
  • long_name: net longwave (infra red) radiation (W/m2)(calculated)
  • var_id: pirn
  • names: net longwave (infra red) radiation (W/m2)(calculated)
  • units: hPa
  • var_id: p
  • long_name: pressure (hPa)
  • names: pressure (hPa)
  • units: degrees
  • long_name: ship coarse over ground (deg)
  • var_id: cog
  • names: ship coarse over ground (deg)
  • units: degrees
  • var_id: heading
  • long_name: ship heading (deg)
  • names: ship heading (deg)
  • units: m/s
  • long_name: ship speed over ground (m/s)
  • var_id: sog
  • names: ship speed over ground (m/s)
  • units: degrees
  • long_name: solar azimuth angle (deg)
  • var_id: solar_azimuth
  • names: solar azimuth angle (deg)
  • units: degrees
  • long_name: solar zenith angle (deg)
  • var_id: solar_zenith
  • names: solar zenith angle (deg)
  • units: degrees
  • long_name: solar zenith angle (from RRTM simulation)(deg)
  • var_id: sza_rrtm
  • names: solar zenith angle (from RRTM simulation)(deg)
  • var_id: time
  • units: days
  • long_name: time as decimal day of year
  • var_id: doy
  • names: time as decimal day of year
  • units: degrees
  • long_name: true wind direction (deg)
  • var_id: wd_tru
  • names: true wind direction (deg)
  • units: m/s
  • long_name: true wind speed (m/s)
  • var_id: ws_tru
  • names: true wind speed (m/s)
  • units: m/s
  • long_name: u (east) component of wind vector (m/s)
  • var_id: u_ws
  • names: u (east) component of wind vector (m/s)
  • units: m/s
  • long_name: v (north) component of wind vection (m/s)
  • var_id: v_ws
  • names: v (north) component of wind vection (m/s)
  • units: degrees
  • long_name: wind direction relative to ship (deg)(bow on = 0)
  • var_id: wd_rel
  • names: wind direction relative to ship (deg)(bow on = 0)
  • units: m/s
  • long_name: wind speed relative to ship (m/s)
  • var_id: ws_rel
  • names: wind speed relative to ship (m/s)

Co-ordinate Variables

Coverage
Temporal Range
Start time:
2014-07-04T09:47:35
End time:
2014-10-01T11:59:58
Geographic Extent

 
85.2300°
 
-180.0000°
 
180.0000°
 
69.6600°