Volcanic Loading: The Dust Veil Index, CDIAC NDP-013

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Volcanic Loading: The Dust Veil Index, CDIAC NDP-013
Description:
Abstract:
Lamb (1970) formulated the Dust Veil Index (DVI) in an attempt to quantify the impact on the Earth's energy balance of changes in atmospheric composition due to explosive volcanic eruptions. The DVI is a numerical index that quantifies the impact of a particular volcanic eruption's release of dust and aerosols over the years following the event. This package provides DVI's for the period 1500 - 1983 (DVI = 1,000 for Krakatoa in 1883), along with DVI estimates for the eruptions of Santorin in 1470 B.C., Vesuvius in 79 A.D., and Oraefajokull in 1362 A.D. Dust ejected into the high atmosphere during explosive volcanic eruptions has been considered a possible cause for climatic change. Dust veils created by volcanic eruptions can reduce the amount of light reaching the Earth's surface and can cause reductions in surface temperatures. These climatic effects can be seen for several years following some eruptions and the magnitude and duration of the effects depend largely on the density of tephra (i.e. dust) ejected, the latitude of injection, and atmospheric circulation patterns. Lamb has used five different methods to determine the DVI for any particular eruption. Final DVI values are averages, sometimes corrected subjectively, of the estimates produced by as many of the five methods as data availability permits. One method used was to make subjective estimates based on previous compilations of secondary historical sources. Three methods that were developed incorporate formulas devised to systematize the estimation of the DVI after the initial subjective or 'free' estimates had been made. These three formulas estimate the DVI based on (1) the depletion of radiation following the eruption, (2) temperature variations following the eruption, and (3) the amount of solid material dispersed as dust after an eruption. All CDIAC numerical data packages include copies of pertinent literature discussing the data, summaries discussing the background, source and scope of the data, as well as applications limitations and restrictions of the data. This data set also resides on the CDIAC CD-ROM which contains many other CDIAC data sets. CDIAC has provided an anonymous FTP area to all data files, retrieval codes, and descriptive files for the NDP's that are presently available. The FTP address is 'ftp://cdiac.esd.ornl.gov' or 128.219.24.36 and input your email address as the password. The NDP-013 data set is located in CDIAC's anonymous FTP in pub/ndp013. All files are compressed (UNIX) ASCII text files. All the data bases provided in this area are fully documented and are also available on 9-track magnetic tape, CD-ROM, or IBM-formatted, high or low-density floppy diskettes.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Lamb, H. H., 1970: 'Volcanic Dust in the Atmosphere; With a Chronology and Assessment of its Meteorological Significance.' Philosophical Transactions of the Royal Society of London, Series A, 266:425-533.
Supplemental_Information:
REFERENCE: Lamb, H. H., 1977: 'Supplementary Volcanic Dust Veil Assessments.' Climate Monitor, 6:57-67.
Supplemental_Information:
REFERENCE: Lamb, H. H., 1983: 'Update of the Chronology of Assessment of the Volcanic Dust Veil Index.' Climate Monitor, 12:79-90.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 15000101
Ending_Date: 19831231
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: 90.0
South_Bounding_Coordinate: -90.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > DUST/ASH/SMOKE > DUST VEIL INDEX
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > LAND RECORDS > VOLCANIC DEPOSITS
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > ASH/DUST COMPOSITION > DUST VEIL INDEX
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > VOLCANIC GASES
Theme_Keyword: Cd-rom
Theme_Keyword: Climatology
Theme_Keyword: Dust Veil Index
Theme_Keyword: Ftp
Theme_Keyword: Idn_node Gsfc/cdiac
Theme_Keyword: Ndp-013
Theme_Keyword: Volcanic Dust
Theme_Keyword: Volcanic Eruptions
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Place_Keyword: VERTICAL LOCATION > STRATOSPHERE
Place_Keyword: VERTICAL LOCATION > TROPOSPHERE
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: H. H. LAMB
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Climatic Research Unit
Address: University of East Anglia
State_or_Province: NORWICH
Country: UNITED KINGDOM
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
Back to Top
Spatial_Reference_Information:
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: DOE/ORNL/ESD/CDIAC > Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge National Laboratory, U. S. Department of Energy
Contact_Person: CARBON DIOXIDE INFORMATION ANALYSIS CENTER
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Carbon Dioxide Information Analysis Center (CDIAC)
Address: Oak Ridge National Laboratory
Address: P.O.. Box 2008
City: OAK RIDGE
State_or_Province: TENNESSEE
Postal_Code: 37831-6335
Country: USA
Contact_Facsimile_Telephone: (865) 574-2232
Resource_Description: NDP-013
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://cdiac.ornl.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
Back to Top
Metadata_Reference_Information:
Metadata_Date:
Metadata_Review_Date: 20060807
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Back to Top
[ Update this Record ]


Link to Web Site