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STAR Snowflake Microphotography


The snowflake microphotography was taken to: (1) provide detailed precipitation characteristics that occurred in Iqaluit; (2) to be used in conjunction with radar data and laser precipitation data to identify local precipitation characteristics and evolution during precipitation events; and (3) provide valdation/comparison of Cloudsat and other satellite data.

Photos of precipitation particles were taken using a Nikon D1x camera during six precipitation events over the 2007 fall field campaign. Temporal resolution of the photographs varied from five-minutes to one-hour. Photos were taken in the Upper Air Shed at the Iqaluit weather office.

Files were stored in a *.jpg format with average individual file sizes of >2 MB per photo. During the observation periods, coincident photos were taken of sizing scale before a photo of precipitation. If the zoom was ever adjusted, a new photo of the sizing scale was taken. 

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Additional information

Data Quality final
  • 1.0 (2020-11-20)
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Related projects
Frequency continuous
Language English
GCMD Science Keywords Expand keywords
Related links

Temporal coverage

Begin datetime 2007-10-17 00:00:00
End datetime 2008-12-01 00:00:00

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 63.75, Minimum (South) Latitude: 63.75
Minimum (West) Longitude: -68.55, Maximum (East) Longitude: -68.55

Primary point of contact information

EOL Data Support <>

Additional contact information


Hanesiak, J., et al. 2020. STAR Snowflake Microphotography. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 27 May 2024.

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