Visibility and present weather observations from the high-Arctic ASCOS expedition 2008
Jussi Paatero
Visibility data was collected using a Vaisala visibility sensor based on forward scattered laser light deployed on the aft starboard side on the 7th deck of the Icebreaker Oden. The visibility sensor is combined with a sensor that measures precipitation intensity and accumulated presentation, and generates the WMO present-weather synop code. The location of this sensor likely leads to an underestimation of precipitation.
AtmosphereWeather observationsASCOSMeteorologyHigh ArcticArctic boundary layerArctic cloudsVisibilityPrecipitationWeather
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Citation
References
Tjernström, M. et al. 2014. The Arctic Summer Cloud Ocean Study (ASCOS): overview and experimental design. Atmospheric Chemistry and Physics, 14, 2823–2869. https://doi.org/10.5194/acp-14-2823-2014
Data description
Finnish Meteorological Institute, present weather and visibility data.<br /> Measurement method: Vaisala FD12P onboard Oden, 7th deck
Comments
Two visibility sensor based on forward scattered laser light was deployed; one that comes with the Oden weather station and one that was deployed only during the ice drift. Both were deployed on the 7th deck; the weather station sensor on the roof of the starboard container and the FMI sensor on the aft starboard side. The Vaisala visibility sensor is combined with a sensor that also measures precipitation intensity and accumulated presentation, and generates the WMO present-weather synop code; hence the name. Note that the location of this sensor likely leeds to an unmderestimation of precipitation, since very light precipitation (droplets or ice crystals) are probly lofted by the flow distortion around the superstructure, often causing upwinds at this location The visibility data from the Oden weather station is an intgral part of the weather station data file.Original address: http://www.ascos.se/index.php?q=node/274
Files:
ASCOS_Present_weather_data_FMI.xls (2.9 MB)
[FD12P_Present weather_codes_0.pdf](/data/ascos/files/FD12P_Present weather_codes_0.pdf) (654.11 KB)
Project
Arctic Summer Cloud-Ocean Study 2008 (Ascos)
Publisher
Bolin Centre Database
First name
Michael
Last name or organisation
Tjernström
Email address
Address
Department of Meteorology; Stockholm University
Postal code
SE-106 91
City
Stockholm
Country
Sweden
GCMD science keyword
Earth science > Atmosphere
GCMD location
Ocean > Arctic Ocean
Dataset language
English
Begin date
2008-08-01
End date
2008-09-08