Arctic Cloud Summer Expedition (ACSE): surface temperature measurements from the University of Leeds Heitronics KT15.85 infra red radiative temperature sensor on board Icebreaker Oden
This dataset contains surface temperature measurements from the University of Leeds' two Heitronics KT15.85 infra red radiative temperature sensors mounted 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.
Both instruments were mounted to point to starboard, but instrument 1 pointing 45 degrees forward and instrument 2 pointing 45 degrees aft, taking raw measurements at 1Hz. The data contain both the raw measured temperature (t_meas) and a corrected value, adjusted for reflection of thermal radiation from surface. The correction follows that developed by Phil Hignett for a similar sensor on the UK Met Office C130 aircraft : MRF Tech note 28, 1988.
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.
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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 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 were checked by the ACSE project data author before supplying to CEDA. Further information on quality may be available in related documentation.
Data are CF-compliant netCDF formatted.
|University of Leeds: Heitronics KT15 IR temperature sensor 1||Deployed on: Swedish Maritime Administration Icebreaker Oden|
|University of Leeds: Heitronics KT15 IR temperature sensor 2||Deployed on: Swedish Maritime Administration Icebreaker Oden|
- units: C
- long_name: instrument ambient temperature (deg C)
- var_id: t_amb
- names: instrument ambient temperature (deg C)
- units: W/m2
- long_name: longwave radiation (downwelling)(W/m2)
- var_id: LWdown
- names: longwave radiation (downwelling)(W/m2)
- units: C
- long_name: surface temperature (corrected)(deg C))
- var_id: t_surf
- names: surface temperature (corrected)(deg C))
- units: C
- long_name: surface temperature (raw measured) (deg c)
- var_id: t_meas
- names: surface temperature (raw measured) (deg c)
- var_id: time
- units: days
- long_name: time as decimal day of year
- var_id: doy
- names: time as decimal day of year