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Contact Info:
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Name:
Fan Mei
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Email:
fan.mei@pnnl.gov
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Phone:
(509) 375-3965
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Street:
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City:
Richland
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State:
WA
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Postal:
99352
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Investigator(s):
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Fan Mei
Jason Tomlinson
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| Publication Info: |
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Publication Date:
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Publication Place:
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Publisher:
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| Data Format: |
ascii (ICARTT format: http://www-air.larc.nasa.gov/missions/etc/ESDS-RFC-019-v1.1_0.pdf)
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Data Update Frequency:
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none
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Abstract:
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The dual column cloud condensation nuclei counter uses a vertically orientated temperature gradient within a ceramic cylinder to create a supersaturated environment. By varying temperature profiles within the column different supersaturations are achieved. Aerosol particles passing through the column either activate or remain unactivated. An optical particle counter at the base of the column counts the number of droplets resulting from the activation of the aerosols.
A constant pressure inlet maintained the instrument at a pressure close to 600 mBar. Column A was maintained at a supersaturation around 0.25% and column B was maintained at a supersaturation around 0.50%.
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Purpose:
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Data were collected in order to help understand the micro-physical properties of aerosol and its effect on cloud.
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Site Information:
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| Sites |
North |
West |
South |
East |
| N/A |
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Content Time Range:
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Begin:
2013.07.15
End:
2013.10.22
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Instrument(s):
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CCN (Cloud condensation nuclei counter)
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Scientific Measurements(s):
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| Measurement name |
Variables |
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Cloud condensation nuclei
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| Stratum Keyword(s): |
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| Data Quality: |
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Attribute Accuracy:
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No formal attribute accuracy tests were conducted
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Positional Accuracy:
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No formal positional accuracy tests were conducted
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Consistency and Completeness Report:
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Data set is considered complete for the information presented, as described in the abstract.Users are advised to read the rest of the metadata record carefully for addtional details.
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Access Restriction:
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No access constraints are associated with this data.
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Use Restrictions:
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No use constraints are associated with this data.
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Tools:
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Tool/Model Description:
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Tool/Model Contact:
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Name:
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Organization:
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Phone:
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Email:
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Tool/Model Citation:
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Title:
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Publication Date:
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Originator:
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Distribution Info:
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| Organization Name: |
ARM Archive User Services |
| Email:
armarchive[at]ornl.gov |
Phone:
1-888-ARM-DATA |
| Street:
Oak Ridge National Laboratory |
City:
Oak Ridge |
| State:
Tennessee |
Postal:
37831-6290 |
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