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Electrodynamic Levitation Diffusion Chamber Measurements of the Mass Growth of Heterogeneously-Nucleated Ice Crystals Grown from the Vapor.
Identification_Information:
Citation:
Citation_Information:
Originator:The Pennsylvania State University
Publication_Date:2016
Title:
Electrodynamic Levitation Diffusion Chamber Measurements of the Mass Growth of Heterogeneously-Nucleated Ice Crystals Grown from the Vapor.
Other_Citation_Details:
Harrison, A., A. Moyle, M. Hanson, and J. Harrington, 2016: Levitation diffusion chamber measurements of the mass growth of small ice crystals from the vapor. Journal of the Atmospheric Sciences, 73, 2743-2758.
Online_Linkage: http://www.datacommons.psu.edu/
Description:
Abstract: 
This data set comprises individual time-series for ice crystals grown in an electrodynamic levitation diffusion chamber. Descriptions of the chamber and experiments can be found in Harrison et al. (2016). Experiments were conducted by freezing small (approximately 10 micrometer radius) droplets heterogeneously using the bionucleant Snomax. Frozen droplets were levitated in the diffusion chamber and grown in a constant temperature, pressure, and supersaturation environment. The voltage ratio needed to levitate the particle was recorded as a function of time and stored in the files archived here. The voltage ratio is identical to the mass ratio of the levitated particles, hence each time-series provides a measure of the mass of the growing particle. The initial size of the injected droplet was measured, and therefore the mass time-series can be calculated from the mass ratio time-series.
Supplemental_Information: 
DATA FOR: Electrodynamic levitation diffusion chamber experiments on the growth of small ice crystals. The crystals were nucleated heterogeneously using the bionucleant Snomax, and the crystals were grown at temperatures ranging between -30 and -37C. Data includes a file (Conditions.txt) that provide the conditions for each experiment. 

AUTHORS: Alexander Harrison, Jerry Harrington, Alfred Moyle

CORRESPONDING AUTHOR: Jerry Harrington. Email: jyh10@psu.edu

DESCRIPTION OF DATA FILES:

Conditions.txt: File containing the growth conditions for each experiment: Atmospheric pressure, temperature at the particle location, ice supersaturation at the particle location and uncertainty, initial radius of the frozen water droplet and uncertainty.

.dat files: Contain the raw data from each experiment. File naming convention is heticegrowth_date, where date is the date of the experiment (monthday, i.e. 712 is July 12). Appended to each date is a letter indicating a specific growth experiment done on that date. File columns are: absolute tracking program voltage modification number (0-4.096), Levitation Voltage , time (s), position (pixel), normalized mass or mass ratio (mass divided by the initial mass), mass (*10^9)
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2016
Currentness_Reference: 
publication date
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:Electrodynamic Moyle electrodynamic et al bionucleant Snomax
Theme_Keyword:environment
Access_Constraints:None.
Use_Constraints: 
The University excludes any and all implied warranties, including warranties or merchantability and fitness for a particular purpose.
The University makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance.
The University will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
The USER is granted permission to translate and add value to the FILES for the use of the FILES on its computer hardware; provided, however, that the USER annually notify the University of any customizing or value-adding work done.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Penn State
Contact_Person:Jerry Y. Harrington
Contact_Position:Professor of Meteorology
Contact_Address:
Address_Type:mailing address
Address: 
517 Walker Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:USA
Contact_Voice_Telephone:(814) 863-1584
Contact_Electronic_Mail_Address:jyh10@psu.edu
Native_Data_Set_Environment:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Organization:Penn State Data Commons
Contact_Address:
Address_Type:mailing and physical address
Address: 
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 - 8792
Contact_Electronic_Mail_Address:datacommons@psu.edu
Distribution_Liability: 
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
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Metadata_Reference_Information:
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Penn State Data Commons
Contact_Position:Metadata Coordinator
Contact_Address:
Address_Type:mailing address
Address: 
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:814-865-8792
Contact_Electronic_Mail_Address:datacommons@psu.edu
Metadata_Standard_Name:FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Time_Convention:local time
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